/* =cccc================== THEME ===========cccc======== */
/* Hide page scrollbar but keep scrolling */
html,
body {
    height: 100%;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
    width: 0;
    height: 0;
    display: none;
}

.scroll-hint {
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    mask-image: linear-gradient(to bottom, transparent, black 16px, black calc(100% - 16px), transparent);
    -webkit-mask-image: linear-gradient(to bottom, transparent, black 16px, black calc(100% - 16px), transparent);
}

.scroll-hint::after {
    content: "";
    pointer-events: none;
    position: sticky;
    bottom: 0;
    left: 0;
    right: 0;
    height: 20px;
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.35));
    display: block;
}

/* Prevent layout jump on Windows when scrollbars appear/disappear */
html {
    scrollbar-gutter: stable both-edges;
}

:root {
    /* Normal */
    --bg: #060a13;
    --bg-2: #0a1222;
    --card: #0e162bcc;
    --text: #eaf0ff;
    --muted: #a8b7d8;
    --accent: #6ad1ff;
    --accent-2: #8b5cf6;
    --ok: #20dda3;
    --warn: #ffb36b;
    --danger: #ff6b6b;
    --border: #1b2743;
    --glass: rgba(255, 255, 255, 0.07);
    --shadow: 0 12px 34px rgba(0, 0, 0, 0.55), inset 0 0 0 1px rgba(255, 255, 255, 0.04);

    /* Premium base (Classic Gold) */
    --gold1: #f6d66b;
    --gold2: #caa85a;
    --gold3: #a3843a;
    --gold4: #4e3b1f;
    --goldText: #fff6cf;
}

/* Premium mode root overrides */
body.premium {
    --bg: #0b0a07;
    --bg-2: #12100a;
    --card: #19150bcc;
    --text: #fff6cf;
    --muted: #e5d9ad;
    --accent: var(--gold1);
    --accent-2: var(--gold2);
    --border: #3a2f17;
    --glass: rgba(255, 245, 205, 0.07);
    --shadow: 0 16px 40px rgba(0, 0, 0, 0.7), inset 0 0 0 1px rgba(255, 245, 205, 0.05);
}

/* Premium micro themes */
body.premium.theme-gold {
    --theme-variant: gold;
}

body.premium.theme-rose {
    --gold1: #ffb7b2;
    --gold2: #f09aa0;
    --gold3: #b66a73;
    --gold4: #5d2e36;
    --goldText: #ffe6e6;
}

body.premium.theme-plat {
    --gold1: #d8e1e8;
    --gold2: #b9c6d0;
    --gold3: #8b9aaa;
    --gold4: #3c4752;
    --goldText: #eef3f7;
}

/* ============== RESET / BASE ============== */
* {
    box-sizing: border-box
}

html,
body {
    height: 100%
}

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    color: var(--text);
    background:
        radial-gradient(1000px 500px at 85% -10%, #1a2d52aa, transparent 70%),
        radial-gradient(700px 400px at -10% 85%, #2a1e65aa, transparent 70%),
        linear-gradient(180deg, #05070c, var(--bg));
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.premium {
    background:
        radial-gradient(900px 460px at 80% -10%, color-mix(in srgb, var(--gold4), transparent 45%), transparent 70%),
        radial-gradient(700px 400px at -10% 85%, color-mix(in srgb, var(--gold3), transparent 60%), transparent 70%),
        linear-gradient(180deg, #0a0906, var(--bg));
}

.noscript {
    background: #fff3cd;
    color: #6a5600;
    padding: 10px;
    text-align: center
}

/* Background visuals */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        linear-gradient(transparent 49%, rgba(255, 255, 255, 0.05) 50%, transparent 51%) 0 0/ 26px 26px,
        linear-gradient(90deg, transparent 49%, rgba(255, 255, 255, 0.05) 50%, transparent 51%) 0 0/ 26px 26px;
    mask-image: radial-gradient(circle at 50% 50%, black 35%, transparent 85%);
    pointer-events: none;
}

.bg-blob {
    position: fixed;
    right: -140px;
    bottom: -140px;
    width: 680px;
    height: 680px;
    z-index: -1;
    background: radial-gradient(closest-side, #6ad1ff33, transparent);
    filter: blur(18px);
    animation: float 16s ease-in-out infinite;
}

body.premium .bg-blob {
    background: radial-gradient(closest-side, color-mix(in srgb, var(--gold1), transparent 60%), transparent);
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1)
    }

    50% {
        transform: translate(-22px, -18px) scale(1.045)
    }
}

@media (prefers-reduced-motion: reduce) {
    .bg-blob {
        animation: none
    }
}

.particles {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none
}

/* Layout */
.shell {
    width: min(1080px, 94vw);
    margin: 28px auto 36px
}

.card {
    position: relative;
    border: 1px solid var(--border);
    border-radius: 22px;
    background: linear-gradient(135deg, var(--card), color-mix(in oklab, var(--card) 85%, transparent));
    box-shadow: var(--shadow);
    padding: 18px;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    inset: -2px;
    z-index: -1;
    filter: blur(10px);
    opacity: .36;
    background: conic-gradient(from 180deg, #6ad1ff33, #8b5cf633, transparent 40%, transparent 60%, #6ad1ff33, #8b5cf633);
    animation: spin 18s linear infinite;
}

body.premium .card::before {
    background: conic-gradient(from 180deg, color-mix(in srgb, var(--gold2), transparent 20%), color-mix(in srgb, var(--gold1), transparent 40%), transparent 40%, transparent 60%, color-mix(in srgb, var(--gold2), transparent 20%), color-mix(in srgb, var(--gold1), transparent 40%));
}

@keyframes spin {
    to {
        transform: rotate(360deg)
    }
}

/* 3D tilt */
.tilt {
    transform-style: preserve-3d;
    transition: transform .18s ease
}

@media (prefers-reduced-motion: reduce) {
    .tilt {
        transform: none !important
    }
}

/* Topbar */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px
}

.logo {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: linear-gradient(135deg, #0f1a31, #0c1629);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

body.premium .logo {
    background: linear-gradient(135deg, var(--gold4), #0f0c05);
    border-color: color-mix(in srgb, var(--gold2), transparent 40%);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.6), inset 0 0 0 1px color-mix(in srgb, var(--gold1), transparent 85%);
}

.titles h1 {
    margin: 0;
    font-size: 21px;
    letter-spacing: .2px
}

.titles p {
    margin: 0;
    color: var(--muted);
    font-size: 13px
}

.actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap
}

/* Premium switch */
.premium-toggle {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none
}

.premium-toggle input {
    display: none
}

.premium-toggle .slider {
    width: 54px;
    height: 30px;
    border-radius: 30px;
    border: 1px solid var(--border);
    background: linear-gradient(135deg, #121c36, #0d162b);
    position: relative;
    box-shadow: var(--shadow);
    transition: background .25s, border-color .25s;
}

.premium-toggle .slider::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #ffffff 0%, #d9e6ff 60%, #93baff 100%);
    transition: left .25s;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.premium-toggle input:checked+.slider {
    background: linear-gradient(135deg, var(--gold3), var(--gold1));
    border-color: color-mix(in srgb, var(--gold2), transparent 20%);
}

.premium-toggle input:checked+.slider::after {
    left: 27px
}

.premium-toggle .label {
    font-size: 13px;
    color: var(--muted)
}

.premium-theme-wrap {
    display: flex;
    align-items: center;
    gap: 8px
}

.premium-theme-wrap .mini {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--muted);
    font-size: 13px
}

.premium-theme-wrap select {
    appearance: none;
    padding: 8px 28px 8px 10px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--bg-2) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%23caa85a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>") right 6px center / 16px no-repeat;
    color: var(--text)
}

/* Ribbon */
.ribbon {
    display: none;
    position: relative;
    margin-bottom: 10px;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--gold3), transparent 30%);
    box-shadow: var(--shadow)
}

body.premium .ribbon {
    display: block
}

.ribbon svg {
    display: block;
    width: 100%;
    height: 36px;
    opacity: .9;
    filter: saturate(1.15)
}

.ribbon .ribbon-text {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--goldText);
    text-shadow: 0 0 12px color-mix(in srgb, var(--gold1), transparent 50%)
}

/* Hero / Controls */
.hero-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 8px
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    font-size: 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--muted)
}

.pill.ok {
    color: #11d69b;
    border-color: #11d69b66;
    background: #11d69b1a
}

.pill.warn {
    color: #ffb36b;
    border-color: #ffb36b66;
    background: #ffb36b1a
}

.pill.err {
    color: #ff6b6b;
    border-color: #ff6b6b66;
    background: #ff6b6b1a
}

.hint {
    color: var(--muted);
    min-height: 18px
}

.row {
    display: grid;
    gap: 12px;
    grid-template-columns: 1fr;
    margin-top: 10px
}

.controls {
    grid-template-columns: 1fr 240px 64px 240px minmax(260px, 1fr);
    align-items: end
}

@media (max-width: 900px) {
    .controls {
        grid-template-columns: 1fr 1fr
    }
}

@media (max-width: 640px) {
    .controls {
        grid-template-columns: 1fr
    }
}

.field {
    display: flex;
    flex-direction: column;
    gap: 8px
}

label {
    color: var(--muted);
    font-size: 13px
}

input,
select {
    width: 100%;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--bg-2);
    color: var(--text);
    transition: border .18s ease, box-shadow .18s ease, background .18s ease, transform .06s ease;
    outline: none;
}

/* native select arrow */
.native-select {
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%236ad1ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 18px;
    padding-right: 44px;
}

body.premium .native-select {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='22' viewBox='0 0 24 24' fill='none' stroke='%23caa85a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
}

option {
    background-color: #0e1526;
    color: var(--text)
}

body.premium option {
    background-color: #120f07;
    color: var(--text)
}

input:focus,
select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 30%, transparent), 0 10px 24px rgba(0, 0, 0, 0.25);
    background: #0d1831;
}

body.premium input:focus,
body.premium select:focus {
    background: #181308
}

/* Gold Select (premium custom searchable) */
.gold-select {
    position: relative
}

.gold-select[hidden] {
    display: none !important
}

.gold-select__btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: linear-gradient(135deg, #1a150a, #0f0c05);
    color: var(--text);
    cursor: pointer;
    box-shadow: var(--shadow);
}

.gold-select__icon {
    font-weight: 700
}

.gold-select__label {
    flex: 1;
    text-align: left;
    opacity: .95
}

.gold-select__chev {
    opacity: .8
}

.gold-select__panel {
    position: absolute;
    inset: auto 0 0 0;
    transform: translateY(calc(100% + 8px));
    border: 1px solid var(--border);
    border-radius: 14px;
    background: linear-gradient(135deg, #1a150a, #0f0c05);
    box-shadow: var(--shadow);
    padding: 8px;
    display: none;
    z-index: 10;
}

.gold-select__panel.open {
    display: block
}

.gold-select__search {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #12100a;
    color: var(--text);
    margin-bottom: 8px;
}

.gold-select__list {
    list-style: none;
    margin: 0;
    padding: 0;
    max-height: 220px;
    overflow: auto
}

.gold-select__list li {
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-radius: 10px;
    cursor: pointer;
}

.gold-select__list li:hover,
.gold-select__list li[aria-selected="true"] {
    background: color-mix(in srgb, var(--gold1), transparent 85%)
}

/* Precision & toggles */
.precision .precision-wrap {
    display: flex;
    align-items: center;
    gap: 10px
}

.precision input[type="range"] {
    flex: 1
}

.precision input[type="number"] {
    width: 80px;
    text-align: center;
    background: var(--bg-2)
}

.toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--muted);
    margin-top: 6px
}

/* Buttons */
.btn {
    border: 1px solid var(--border);
    background: linear-gradient(135deg, #121c36, #0d162b);
    color: var(--text);
    padding: 12px 16px;
    border-radius: 14px;
    cursor: pointer;
    transition: transform .06s ease, box-shadow .2s, border-color .2s, background .2s;
    box-shadow: var(--shadow);
}

.btn:hover {
    border-color: var(--accent);
    box-shadow: 0 10px 28px color-mix(in srgb, var(--accent) 25%, transparent)
}

.btn:active {
    transform: translateY(1px)
}

.btn.ghost {
    --h: 42px;
    /* control height */
    --pad-x: 14px;
    /* side padding */
    --radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;

    height: var(--h);
    padding: 0 var(--pad-x);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: linear-gradient(135deg, #0f1629, #0a0f1c);
    color: var(--text);
    font: 700 14px/1 ui-sans-serif, system-ui, Segoe UI;

    box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    outline: none;
    transition: transform .1s, box-shadow .25s, border-color .25s, background .25s, color .25s;
    white-space: nowrap;
    /* text one line */

    /* Make sibling buttons align perfectly on desktop */
    #copyLinkBtn+#clearAllBtn {
        margin-left: 10px;
    }

    /* Hover/active/focus */
    .btn.ghost:hover {
        box-shadow: 0 10px 22px rgba(0, 0, 0, .25), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
    }

    .btn.ghost:active {
        transform: scale(.96);
    }

    .btn.ghost:focus-visible {
        box-shadow:
            0 0 0 3px color-mix(in srgb, var(--accent) 24%, transparent),
            0 12px 26px rgba(0, 0, 0, .30);
    }

    /* Premium themes */
    body.premium .btn.ghost {
        color: var(--goldText, #fff6cf);
        background: linear-gradient(135deg, #1b150a, #0f0b05);
        border-color: color-mix(in srgb, var(--gold2), transparent 45%);
        box-shadow: 0 10px 20px rgba(0, 0, 0, .28), inset 0 0 0 1px rgba(255, 245, 205, .06);
    }

    body.premium .btn.ghost:focus-visible {
        box-shadow:
            0 0 0 4px color-mix(in srgb, var(--gold1) 24%, transparent),
            0 12px 28px rgba(0, 0, 0, .35);
    }

    /* Rose / Platinum variants */
    body.premium.theme-rose .btn.ghost {
        background: linear-gradient(135deg, #462129, #2a1115);
        border-color: #a26b71;
    }

    body.premium.theme-plat .btn.ghost {
        background: linear-gradient(135deg, #2f3942, #1a2026);
        border-color: #7f8d98;
    }

    /* 📱 Mobile responsivity:
   - Buttons become full width
   - Stack vertically with proper gap
   - Slightly larger height for easier touch  */
    @media (max-width: 560px) {
        .btn.ghost {
            --h: 48px;
            width: 100%;
        }

        /* remove side-by-side gap; add vertical gap */
        #copyLinkBtn+#clearAllBtn {
            margin-left: 0;
            margin-top: 10px;
        }
    }

    /* Optional: if buttons live in a container, make it responsive automatically.
   (No HTML change needed; applies to any parent having data-actions or class .action-bar) */
    .action-bar,
    [data-actions="buttons"] {
        display: grid;
        grid-template-columns: auto auto;
        gap: 10px;
    }

    @media (max-width: 560px) {

        .action-bar,
        [data-actions="buttons"] {
            grid-template-columns: 1fr;
        }
    }

    /* Reduced motion preference */
    @media (prefers-reduced-motion: reduce) {
        .btn.ghost {
            transition: none !important;
        }
    }

}

.btn.small {
    padding: 8px 12px;
    font-size: 12px
}

.swap {
    height: 52px;
    width: 64px;
    border-radius: 14px;
    font-size: 18px
}

body.premium .btn {
    background: linear-gradient(135deg, #1a150a, #0f0c05);
    border-color: color-mix(in srgb, var(--gold2), transparent 40%)
}

body.premium .btn:hover {
    border-color: var(--gold2);
    box-shadow: 0 10px 30px color-mix(in srgb, var(--gold1) 25%, transparent)
}

/* Result */
.result {
    margin-top: 12px;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02))
}

.result-line {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap
}

.caption {
    color: var(--muted);
    font-size: 12px
}

.value {
    font-size: 29px;
    font-weight: 700;
    letter-spacing: .2px;
    text-shadow: 0 0 18px #6ad1ff44, 0 0 32px #8b5cf622;
    will-change: transform, opacity;
    transition: transform .16s ease, opacity .16s ease;
}

body.premium .value {
    text-shadow: 0 0 18px color-mix(in srgb, var(--gold1), transparent 35%), 0 0 36px color-mix(in srgb, var(--gold2), transparent 70%)
}

/* Pro tools, favorites, analytics */
.pro-tools {
    margin-top: 12px;
    border: 1px dashed var(--border);
    border-radius: 14px;
    padding: 10px 12px;
    background: var(--glass)
}

.pro-title {
    font-weight: 600;
    margin-bottom: 6px
}

.pro-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px
}

.favorites {
    margin-top: 12px
}

.fav-head {
    display: flex;
    align-items: center;
    justify-content: space-between
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px
}

.chips .chip {
    border: 1px solid var(--border);
    background: var(--glass);
    color: var(--text);
    padding: 6px 10px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 13px;
    transition: transform .06s ease, border-color .2s;
}

.chips .chip:hover {
    border-color: var(--accent)
}

body.premium .chips .chip {
    border-color: color-mix(in srgb, var(--gold2), transparent 40%)
}

body.premium .chips .chip:hover {
    border-color: var(--gold2)
}

.analytics {
    margin-top: 12px;
    border: 1px dashed var(--border);
    border-radius: 14px;
    padding: 10px 12px;
    background: var(--glass)
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px
}

.stat {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px;
    background: var(--bg-2)
}

.stat .k {
    color: var(--muted);
    font-size: 12px
}

.stat .v {
    font-weight: 700;
    margin-top: 4px
}







/* Matrix */
.matrix-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap
}

.muted {
    color: var(--muted)
}

.table-wrap {
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--glass);
    margin-top: 10px;
    -webkit-overflow-scrolling: touch
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 540px
}

th,
td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    white-space: nowrap
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.04)
}

.meter {
    height: 6px;
    border-radius: 999px;
    margin-top: 6px;
    background: linear-gradient(90deg, var(--accent) 0%, transparent 0%);
    transition: background-size .3s ease;
    background-size: var(--pct, 0%) 100%;
    background-repeat: no-repeat
}

body.premium .meter {
    background-image: linear-gradient(90deg, var(--gold3), var(--gold1), var(--gold3));
    box-shadow: 0 1px 6px color-mix(in srgb, var(--gold1), transparent 70%)
}

/* History */
.history-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px
}

.history-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 8px
}

.history-list li {
    display: flex;
    gap: 10px;
    justify-content: space-between;
    align-items: center;
    background: var(--glass);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 10px 12px
}

.history-list .pill {
    font-size: 12px;
    color: var(--muted);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 2px 8px
}

/* Footer */
.footer {
    margin: 18px 4px 0;
    display: flex;
    justify-content: center
}

/* States */
.input-error {
    border-color: var(--danger) !important;
    box-shadow: 0 0 0 4px #ff6b6b26 !important
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 8px
}

/* Responsive */
@media (max-width: 700px) {
    .shell {
        width: 96vw
    }

    .card {
        padding: 14px;
        border-radius: 20px
    }

    .btn {
        padding: 12px 14px
    }

    .value {
        font-size: 26px
    }

    input,
    select {
        padding: 13px 14px;
        border-radius: 12px
    }

    .swap {
        height: 50px;
        width: 60px
    }

    .topbar .titles h1 {
        font-size: 19px
    }

    .titles p {
        font-size: 12px
    }

    .stats-grid {
        grid-template-columns: 1fr
    }
}

@media (max-width: 420px) {
    .value {
        font-size: 24px
    }

    .controls {
        gap: 10px
    }

    .history-list li {
        padding: 8px 10px
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important
    }
}





/* ===== Neo Toggle (inspired by your favorite style; no Tailwind needed) ===== */
.neo-toggle {
    --t-w: 72px;
    /* width (md) */
    --t-h: 40px;
    /* height (md) */
    --t-pad: 3px;
    /* inner padding for thumb travel */
    --t-dur: .45s;
    /* animation duration */

    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    user-select: none;
}

.neo-toggle.sm {
    --t-w: 60px;
    --t-h: 34px;
    --t-pad: 3px
}

/* compact size */

.neo-toggle__input {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
}

/* Label text */
.neo-toggle__text {
    font-size: 13.5px;
    color: var(--muted);
}

/* Track */
.neo-toggle__track {
    position: relative;
    width: var(--t-w);
    height: var(--t-h);
    border-radius: 999px;
    display: inline-block;
    border: 1px solid var(--border);
    background: linear-gradient(135deg, #121c36, #0d162b);
    box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    transition: background var(--t-dur), border-color var(--t-dur), box-shadow var(--t-dur), background-size .35s ease;
    background-size: 100% 100%;
}

body.premium .neo-toggle__track {
    background: linear-gradient(135deg, var(--gold4), #0f0c05);
    border-color: color-mix(in srgb, var(--gold2), transparent 40%);
}

.neo-toggle:hover .neo-toggle__track,
.neo-toggle:focus-within .neo-toggle__track {
    background-size: 100% 250%;
}

/* Thumb */
.neo-toggle__thumb {
    position: absolute;
    top: var(--t-pad);
    left: var(--t-pad);
    width: calc(var(--t-h) - var(--t-pad)*2);
    height: calc(var(--t-h) - var(--t-pad)*2);
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, #ffffff 0%, #d9e6ff 60%, #93baff 100%);
    box-shadow: 0 10px 18px rgba(0, 0, 0, .35), inset 0 0 0 1px rgba(255, 255, 255, .45);
    transform: rotate(180deg);
    transition: left var(--t-dur) cubic-bezier(.2, .7, .2, 1.05), transform .35s ease, box-shadow .25s ease, background .25s ease;
}

body.premium .neo-toggle__thumb {
    background: radial-gradient(circle at 35% 35%, #fff6cf 0%, #f6d66b 55%, #caa85a 100%);
    box-shadow: 0 10px 20px rgba(0, 0, 0, .45), inset 0 0 0 1px rgba(255, 245, 205, .5);
}

/* ON state */
.neo-toggle__input:checked+.neo-toggle__track {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-color: var(--accent);
    box-shadow: 0 12px 30px color-mix(in srgb, var(--accent) 28%, transparent);
}

body.premium .neo-toggle__input:checked+.neo-toggle__track {
    background: linear-gradient(135deg, var(--gold3), var(--gold1));
    border-color: var(--gold2);
    box-shadow: 0 12px 32px color-mix(in srgb, var(--gold1) 28%, transparent);
}

.neo-toggle__input:checked+.neo-toggle__track .neo-toggle__thumb {
    left: calc(var(--t-w) - var(--t-h) + var(--t-pad));
    transform: rotate(-6deg);
}

/* Press micro‑feedback */
.neo-toggle__track:active .neo-toggle__thumb {
    transform: scale(.96)
}

/* Theme variants (Rose / Platinum) */
body.premium.theme-rose .neo-toggle__input:checked+.neo-toggle__track {
    background: linear-gradient(135deg, #b66a73, #ffb7b2);
    border-color: #f09aa0;
    box-shadow: 0 12px 32px rgba(240, 154, 160, .28);
}

body.premium.theme-plat .neo-toggle__input:checked+.neo-toggle__track {
    background: linear-gradient(135deg, #8b9aaa, #d8e1e8);
    border-color: #b9c6d0;
    box-shadow: 0 12px 32px rgba(184, 198, 208, .26);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    .neo-toggle__track,
    .neo-toggle__thumb {
        transition: none !important
    }
}




/* ===== Neo Check (premium checkbox, theme-aware) ===== */
.toggles.pro {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 16px;
    margin-top: 8px
}

.neo-check {
    --box: 22px;
    /* size (md: 24–26px ok), sm below tweaks it */
    --pad: 3px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
}

.neo-check.sm {
    --box: 20px;
    --pad: 2px
}

.neo-check__input {
    position: absolute;
    opacity: 0;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
}

.neo-check__text {
    font-size: 13.5px;
    color: var(--muted)
}

/* Box (unchecked) */
.neo-check__box {
    width: var(--box);
    height: var(--box);
    border-radius: 8px;
    display: inline-grid;
    place-items: center;
    border: 1px solid var(--border);
    background: linear-gradient(135deg, #121c36, #0d162b);
    box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    transition: background .22s, border-color .22s, box-shadow .22s, transform .08s;
    position: relative;
}

body.premium .neo-check__box {
    background: linear-gradient(135deg, var(--gold4), #0f0c05);
    border-color: color-mix(in srgb, var(--gold2), transparent 40%);
}

.neo-check:hover .neo-check__box,
.neo-check:focus-within .neo-check__box {
    box-shadow: 0 10px 24px rgba(0, 0, 0, .25), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

/* Check icon (SVG via pseudo) */
.neo-check__box::after {
    content: "";
    width: calc(var(--box) - var(--pad)*2);
    height: calc(var(--box) - var(--pad)*2);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100% 100%;
    opacity: 0;
    transform: scale(.88);
    transition: opacity .16s ease, transform .16s ease;
    /* default (non-premium) white check */
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='64' height='64' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>");
}

body.premium .neo-check__box::after {
    /* Base64 (gold stroke #f6d66b) */
    background-image: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0ibm9uZSIgc3Ryb2tlPSIjZjZkNjZiIiBzdHJva2Utd2lkdGg9IjMiIHN0cm9rZS1saW5lY2FwPSJyb3VuZCIgc3Ryb2tlLWxpbmVqb2luPSJyb3VuZCI+PHBvbHlsaW5lIHBvaW50cz0iMjAgNiA5IDE3IDQgMTIiLz48L3N2Zz4=');
}

/* Checked state */
.neo-check__input:checked+.neo-check__box {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    border-color: var(--accent);
    box-shadow: 0 10px 26px color-mix(in srgb, var(--accent) 26%, transparent);
}

body.premium .neo-check__input:checked+.neo-check__box {
    background: linear-gradient(135deg, var(--gold3), var(--gold1));
    border-color: var(--gold2);
    box-shadow: 0 12px 30px color-mix(in srgb, var(--gold1) 28%, transparent);
}

.neo-check__input:checked+.neo-check__box::after {
    opacity: 1;
    transform: scale(1);
}

/* Active press micro-feedback */
.neo-check__box:active {
    transform: scale(.96)
}

/* Theme variants when checked */
body.premium.theme-rose .neo-check__input:checked+.neo-check__box {
    background: linear-gradient(135deg, #b66a73, #ffb7b2);
    border-color: #f09aa0;
    box-shadow: 0 12px 30px rgba(240, 154, 160, .28);
}

body.premium.theme-plat .neo-check__input:checked+.neo-check__box {
    background: linear-gradient(135deg, #8b9aaa, #d8e1e8);
    border-color: #b9c6d0;
    box-shadow: 0 12px 30px rgba(184, 198, 208, .26);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .neo-check__box {
        transition: none !important
    }

    .neo-check__box::after {
        transition: none !important
    }
}








/* ========= PRECISION: Responsive layout ========= */
.precision {
    display: grid;
    gap: 8px;
}

.precision>label {
    font-weight: 600;
    color: var(--text);
}

/* Slider + Number box row (stacks on small screens) */
.precision-wrap {
    display: grid;
    grid-template-columns: 1fr auto;
    /* slider grows, number stays */
    align-items: center;
    gap: 12px;
}

@media (max-width: 520px) {
    .precision-wrap {
        grid-template-columns: 1fr;
        /* stack */
        gap: 10px;
    }

    .precision-wrap .neo-num {
        justify-self: end;
        /* right align number below slider */
        width: clamp(70px, 28vw, 100px);
    }
}

/* ========= Number box (premium input) ========= */
.neo-num {
    width: clamp(68px, 18vw, 92px);
    height: 36px;
    text-align: center;
    font: 600 14px/1 ui-sans-serif, system-ui, Segoe UI;
    color: var(--text);
    background: linear-gradient(135deg, #0f1629, #0a0f1c);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
    outline: none;
    transition: box-shadow .25s, border-color .25s, background .25s;
}

.neo-num:focus-visible {
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent), var(--shadow);
}

body.premium .neo-num {
    color: var(--goldText, #fff6cf);
    background: linear-gradient(135deg, #1b150a, #0f0b05);
    border-color: color-mix(in srgb, var(--gold2), transparent 50%);
    box-shadow: 0 10px 20px rgba(0, 0, 0, .28), inset 0 0 0 1px rgba(255, 245, 205, .06);
}

body.premium .neo-num:focus-visible {
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--gold1) 24%, transparent), 0 12px 26px rgba(0, 0, 0, .32);
}

/* Remove default number spinners (optional) */
.neo-num::-webkit-outer-spin-button,
.neo-num::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.neo-num[type=number] {
    appearance: textfield;
    /* Standard property */
    -moz-appearance: textfield;
    /* Firefox-specific */
    -webkit-appearance: textfield;
    /* Safari/Chrome-specific */
}

/* ========= Slider: slim, centered, touch‑friendly ========= */

/* Base variables (desktop) */
.neo-slider {
    --track-h: 10px;
    /* visual height (slim) */
    --thumb: 20px;
    /* thumb diameter */
    --ticks: 18px;
    /* subtle tick spacing */
    position: relative;
    width: 100%;
    height: var(--track-h);
    border-radius: 999px;
    border: 1px solid var(--border);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    touch-action: pan-y;
    /* allow horizontal drag on mobile */
    -webkit-tap-highlight-color: transparent;
    pointer-events: auto;
    z-index: 1;
    /* Base track + subtle ticks (non-premium) */
    background:
        repeating-linear-gradient(90deg,
            transparent 0 calc(var(--ticks) - 1px),
            rgba(255, 255, 255, 0.07) calc(var(--ticks) - 1px) var(--ticks)),
        linear-gradient(135deg, #121c36, #0d162b);
    box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    transition: box-shadow .25s, border-color .25s, background .25s;
}

/* Extra invisible hit‑area to keep it slim visually but easy to drag */
.neo-slider::before {
    content: "";
    position: absolute;
    inset: calc(var(--track-h) / -1.5) 0;
    /* top/bottom extra touch area */
    border-radius: 16px;
    pointer-events: none;
    /* do not block touches */
}

/* Focus/hover polish */
.neo-slider:hover {
    box-shadow: 0 10px 22px rgba(0, 0, 0, .25), inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.neo-slider:focus-visible {
    box-shadow:
        0 0 0 4px color-mix(in srgb, var(--accent) 22%, transparent),
        0 12px 26px rgba(0, 0, 0, .30);
}

/* Premium themes: track + ticks color */
body.premium .neo-slider {
    background:
        repeating-linear-gradient(90deg,
            transparent 0 calc(var(--ticks) - 1px),
            rgba(255, 245, 205, .10) calc(var(--ticks) - 1px) var(--ticks)),
        linear-gradient(135deg, var(--gold4), #0f0c05);
    border-color: color-mix(in srgb, var(--gold2), transparent 40%);
    box-shadow: 0 10px 22px rgba(0, 0, 0, .28), inset 0 0 0 1px rgba(255, 245, 205, 0.05);
}

body.premium.theme-rose .neo-slider {
    background:
        repeating-linear-gradient(90deg,
            transparent 0 calc(var(--ticks) - 1px),
            rgba(255, 200, 210, .10) calc(var(--ticks) - 1px) var(--ticks)),
        linear-gradient(135deg, #5d2e36, #33161a);
    border-color: #a26b71;
}

body.premium.theme-plat .neo-slider {
    background:
        repeating-linear-gradient(90deg,
            transparent 0 calc(var(--ticks) - 1px),
            rgba(220, 232, 240, .12) calc(var(--ticks) - 1px) var(--ticks)),
        linear-gradient(135deg, #3c4752, #1f262d);
    border-color: #7f8d98;
}

/* Centered runnable track (WebKit), so the thumb sits dead-center */
.neo-slider::-webkit-slider-runnable-track {
    height: var(--track-h);
    background: transparent;
    border-radius: 999px;
    border: 0;
}

/* SHINY STEEL THUMB (default) */
.neo-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: var(--thumb);
    height: var(--thumb);
    border-radius: 50%;
    margin-top: calc((var(--track-h) - var(--thumb)) / 2);
    /* vertical centering */
    background:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, .85) 0 35%, rgba(200, 210, 220, .65) 36%, rgba(120, 135, 150, .9) 70%, rgba(60, 70, 80, 1) 100%),
        conic-gradient(from 180deg at 50% 50%, rgba(240, 245, 250, .85), rgba(150, 160, 170, .85), rgba(240, 245, 250, .85));
    border: 1px solid rgba(255, 255, 255, .5);
    box-shadow: 0 10px 18px rgba(0, 0, 0, .35), inset 0 0 0 1px rgba(255, 255, 255, .4);
    transition: transform .12s ease, box-shadow .2s ease, background .25s;
}

.neo-slider:active::-webkit-slider-thumb {
    transform: scale(.95);
}

.neo-slider::-moz-range-thumb {
    width: var(--thumb);
    height: var(--thumb);
    border-radius: 50%;
    background:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, .85) 0 35%, rgba(200, 210, 220, .65) 36%, rgba(120, 135, 150, .9) 70%, rgba(60, 70, 80, 1) 100%),
        conic-gradient(from 180deg at 50% 50%, rgba(240, 245, 250, .85), rgba(150, 160, 170, .85), rgba(240, 245, 250, .85));
    border: 1px solid rgba(255, 255, 255, .5);
    box-shadow: 0 10px 18px rgba(0, 0, 0, .35), inset 0 0 0 1px rgba(255, 255, 255, .4);
    transition: transform .12s ease, box-shadow .2s ease, background .25s;
}

.neo-slider:active::-moz-range-thumb {
    transform: scale(.95);
}

/* Firefox track */
.neo-slider::-moz-range-track {
    height: var(--track-h);
    border-radius: 999px;
    background: transparent;
    /* real visuals come from the element background */
}

/* Mobile: slightly bigger touch target, still slim visually */
@media (max-width: 520px) {
    .neo-slider {
        --track-h: 12px;
        --thumb: 24px;
        --ticks: 20px;
    }
}

/* Disabled state */
.neo-slider:disabled {
    opacity: .6;
    cursor: not-allowed;
}

/* ===== OPTIONAL: Gold thumb in premium (uncomment if you prefer gold over steel) ===== */

body.premium .neo-slider::-webkit-slider-thumb,
body.premium .neo-slider::-moz-range-thumb {
    background:
        radial-gradient(circle at 35% 35%, #fff6cf 0%, #f6d66b 55%, #caa85a 100%),
        linear-gradient(180deg, rgba(255, 255, 255, .35), rgba(255, 255, 255, 0) 50%, rgba(0, 0, 0, .3) 100%);
    border-color: rgba(255, 245, 205, .7);
    box-shadow: 0 12px 22px rgba(0, 0, 0, .45), inset 0 0 0 1px rgba(255, 245, 205, .55);
}







/* ===== Premium Theme dropdown (CSS‑only, no JS) ===== */

.premium-theme-wrap {
    max-width: 520px;
    margin: 0 auto;
    padding-inline: 12px;
}

.premium-theme-wrap>label.mini {
    display: grid;
    gap: 8px;
    position: relative;
}

.premium-theme-wrap>label.mini>span {
    font-weight: 700;
    letter-spacing: .2px;
    color: var(--text);
}

/* Base select (premium box, full-width, big touch area) */
#premiumTheme {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 46px;
    padding: 10px 44px 10px 50px;
    /* left space for swatch, right for arrow */
    border-radius: 14px;
    border: 1px solid color-mix(in srgb, var(--gold2, #caa85a), transparent 48%);
    outline: none;
    color: var(--goldText, #fff6cf);
    background: linear-gradient(135deg, #1b150a, #0f0b05);
    box-shadow:
        0 12px 28px rgba(0, 0, 0, .28),
        inset 0 0 0 1px rgba(255, 245, 205, .06);
    transition: border-color .25s, box-shadow .25s, background .35s, filter .25s;
    box-sizing: border-box;
}

/* Non‑premium page fallback (if body.premium off) */
body:not(.premium) #premiumTheme {
    color: var(--text);
    background: linear-gradient(135deg, #0f1629, #0a0f1c);
    border: 1px solid var(--border);
    box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, .05);
}

/* Focus ring */
#premiumTheme:focus-visible {
    box-shadow:
        0 0 0 4px color-mix(in srgb, var(--gold1, #f6d66b) 26%, transparent),
        0 14px 32px rgba(0, 0, 0, .34);
}

/* Custom arrow (right) */
.premium-theme-wrap>label.mini::after {
    content: "";
    position: absolute;
    right: 14px;
    bottom: 16px;
    width: 14px;
    height: 14px;
    pointer-events: none;
    background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24'><path d='M6 9l6 6 6-6' fill='none' stroke='%23f6d66b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat center/100% 100%;
}

body:not(.premium) .premium-theme-wrap>label.mini::after {
    background: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24'><path d='M6 9l6 6 6-6' fill='none' stroke='%23cfd8f3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/></svg>") no-repeat center/100% 100%;
}

/* Left circular swatch (changes with selected option via :has) */
.premium-theme-wrap>label.mini::before {
    content: "";
    position: absolute;
    left: 14px;
    bottom: 12px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, .28) inset,
        0 2px 10px rgba(0, 0, 0, .35);
    background: radial-gradient(circle at 30% 30%, #fff6cf 0%, #f6d66b 55%, #caa85a 100%);
    /* default gold */
    transition: transform .25s, filter .25s, background .35s;
}

.premium-theme-wrap>label.mini:hover::before {
    transform: translateY(-1px)
}

/* Variant swatches (modern browsers) */
.premium-theme-wrap>label.mini:has(#premiumTheme option[value="gold"]:checked)::before {
    background: radial-gradient(circle at 30% 30%, #fff6cf 0%, #f6d66b 55%, #caa85a 100%);
}

.premium-theme-wrap>label.mini:has(#premiumTheme option[value="rose"]:checked)::before {
    background: radial-gradient(circle at 32% 32%, #ffe0e2 0%, #ffb7b2 58%, #b66a73 100%);
}

.premium-theme-wrap>label.mini:has(#premiumTheme option[value="platinum"]:checked)::before {
    background: radial-gradient(circle at 32% 32%, #ffffff 0%, #d8e1e8 60%, #8b9aaa 100%);
}

/* Optional: label color harmonize (subtle) */
.premium-theme-wrap>label.mini:has(#premiumTheme option[value="rose"]:checked)>span {
    color: #ffd1d6;
}

.premium-theme-wrap>label.mini:has(#premiumTheme option[value="platinum"]:checked)>span {
    color: #dfe7ee;
}

/* Mobile sizing tweak */
@media (max-width: 520px) {
    #premiumTheme {
        height: 48px;
        padding: 11px 44px 11px 52px;
    }

    .premium-theme-wrap>label.mini::before {
        left: 14px;
        bottom: 12px;
        width: 22px;
        height: 22px;
    }

    .premium-theme-wrap>label.mini::after {
        right: 14px;
        bottom: 16px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    #premiumTheme,
    .premium-theme-wrap>label.mini::before {
        transition: none !important;
    }
}






/* ===== Brand + Logo (premium-ready) ===== */
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #101623, #0b111d);
    border: 1px solid var(--border);
    box-shadow: var(--shadow), inset 0 0 0 1px rgba(255, 255, 255, 0.04);
    overflow: hidden;
}

@media (max-width:560px) {
    .logo {
        width: 40px;
        height: 40px;
        border-radius: 10px;
    }
}

.logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.logo-fallback {
    font-size: 22px;
    opacity: .95;
}

.logo.has-img .logo-fallback {
    display: none;
}

/* Premium glow/ring */
body.premium .logo {
    background: linear-gradient(135deg, #1b150a, #0f0b05);
    border-color: color-mix(in srgb, var(--gold2), transparent 45%);
    box-shadow: 0 8px 18px rgba(0, 0, 0, .35), inset 0 0 0 1px rgba(255, 245, 205, 0.06);
}

body.premium .logo::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(246, 214, 107, .45), inset 0 0 18px rgba(246, 214, 107, .08);
    pointer-events: none;
}

/* Theme variants */
body.premium.theme-rose .logo {
    background: linear-gradient(135deg, #462129, #2a1115);
    border-color: #a26b71;
}

body.premium.theme-plat .logo {
    background: linear-gradient(135deg, #2f3942, #1a2026);
    border-color: #7f8d98;
}

/* (optional) title spacing */
.titles h1 {
    margin: 0;
    line-height: 1.1
}

.titles p {
    margin: 2px 0 0;
    opacity: .85
}





/* ===== THEME VARIABLES (inherit from body) ========================== */
:root {
    /* fallback (non‑premium / normal) */
    --band-d1: #caa85a;
    /* dark */
    --band-m: #f6d66b;
    /* mid  */
    --band-l: #ffcb3cc9;
    /* light*/
    --band-text: #0b1426;
}

/* GOLD */
body.premium.theme-gold {
    --band-d1: #5d4e2a;
    --band-m: #c1a96e;
    --band-l: #f6e27a;
    --band-text: #1b150a;
}

/* ROSE */
body.premium.theme-rose {
    --band-d1: #91505d;
    --band-m: #f2a1a2;
    --band-l: #ffb7b2;
    --band-text: #2f1014;
}

/* PLATINUM */
body.premium.theme-plat {
    --band-d1: #6f7f8f;
    --band-m: #8b9aaa;
    --band-l: #dce6ef;
    --band-text: #111820;
}

/* ===== RIBBON SECTION (full bar background) ======================== */
.ribbon {
    position: relative;
    height: clamp(48px, 7vw, 72px);
    border-radius: 14px;
    overflow: hidden;
    /* metallic gradient band */
    background:
        /* bevel highlight */
        linear-gradient(180deg, rgba(255, 255, 255, 0.35) 0%, rgba(255, 255, 255, 0.10) 36%, transparent 52%) top/100% 100% no-repeat,
        /* main metallic sweep */
        linear-gradient(90deg, var(--band-d1) 0%, var(--band-m) 25%, var(--band-l) 50%, var(--band-m) 75%, var(--band-d1) 100%);
    box-shadow:
        0 8px 18px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.45),
        inset 0 -1px 0 rgba(0, 0, 0, 0.25);
}

/* We keep your SVG in DOM but hide it (so color locks na ho) */
.ribbon>svg {
    display: none;
}

/* subtle texture overlay */
.ribbon::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 3px),
        radial-gradient(120% 80% at 15% 10%, rgba(255, 255, 255, 0.12), transparent 60%),
        radial-gradient(120% 80% at 85% 90%, rgba(0, 0, 0, 0.10), transparent 60%);
    pointer-events: none;
    mix-blend-mode: overlay;
}

/* gentle inner shadow for depth */
.ribbon::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(100% 60% at 50% -10%, rgba(0, 0, 0, 0.18), transparent 60%),
        radial-gradient(100% 60% at 50% 110%, rgba(0, 0, 0, 0.18), transparent 60%);
    pointer-events: none;
}

/* animated sheen sweep across the band */
.ribbon .sheen {
    position: absolute;
    inset: 0;
    background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.65) 50%, transparent 70%);
    mix-blend-mode: screen;
    transform: translateX(-120%);
    animation: ribBandSheen 3.2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes ribBandSheen {
    0% {
        transform: translateX(-120%);
        opacity: 0;
    }

    12% {
        opacity: .85;
    }

    55% {
        transform: translateX(120%);
        opacity: 0;
    }

    100% {
        transform: translateX(120%);
        opacity: 0;
    }
}

/* center the pill ribbon inside */
.ribbon .ribbon-wrap {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    /* clicks pass-through except pill */
}

.ribbon .neo-ribbon {
    pointer-events: auto;
}

/* ===== Center pill styling (matches earlier premium pill) ========== */
.neo-ribbon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    min-height: 44px;
    border-radius: 999px;
    isolation: isolate;
    color: var(--band-text);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.38) 0%, rgba(255, 255, 255, 0.10) 36%, transparent 52%) top/100% 100% no-repeat,
        linear-gradient(135deg, var(--band-d1), var(--band-l) 52%, var(--band-m));
    border: 1px solid rgba(0, 0, 0, 0.28);
    box-shadow:
        0 8px 18px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.45),
        inset 0 -1px 0 rgba(0, 0, 0, 0.25);
}

.neo-ribbon::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background:
        repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.06) 0 1px, transparent 1px 3px),
        radial-gradient(120% 80% at 15% 10%, rgba(255, 255, 255, 0.12), transparent 60%),
        radial-gradient(120% 80% at 85% 90%, rgba(0, 0, 0, 0.10), transparent 60%);
    mix-blend-mode: overlay;
    pointer-events: none;
}

.neo-ribbon::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, 0.70) 50%, transparent 70%);
    transform: translateX(-120%);
    animation: ribbonSheen 2.8s ease-in-out infinite;
    mix-blend-mode: screen;
    pointer-events: none;
}

@keyframes ribbonSheen {
    0% {
        transform: translateX(-120%);
        opacity: 0;
    }

    10% {
        opacity: .9;
    }

    50% {
        transform: translateX(120%);
        opacity: 0;
    }

    100% {
        transform: translateX(120%);
        opacity: 0;
    }
}

.neo-ribbon .neo-ribbon__text {
    position: relative;
    z-index: 1;
    font: 800 14px/1 ui-sans-serif, system-ui, "Segoe UI", Roboto, Arial, sans-serif;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    white-space: nowrap;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.35), 0 -1px 0 rgba(0, 0, 0, 0.25);
    user-select: none;
}

/* Responsive */
@media (max-width: 560px) {
    .neo-ribbon {
        padding: 8px 16px;
        min-height: 40px;
    }

    .neo-ribbon .neo-ribbon__text {
        font-size: 12px;
        letter-spacing: 0.14em;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {

    .ribbon .sheen,
    .neo-ribbon::after {
        animation: none;
        opacity: .18;
    }
}




















/* =========================
   Neo Temperature Lab
   Professional · Futuristic · Mobile-first
   Applies to: #app-info .premium-section
   ========================= */

:root {
    --bg: #0b0c15;
    --panel-bg: rgba(18, 19, 32, 0.74);
    --glass-edge: rgba(255, 255, 255, 0.04);
    --accent: #f6d66b;
    /* gold */
    --accent-2: #ff9ed1;
    /* rose */
    --muted: #9da0b3;
    --text: #eef0f7;
    --radius: 14px;
    --card-pad: 18px;
    --transition: 280ms cubic-bezier(.22, .9, .35, 1);
    --elev: 0 18px 60px -18px rgba(16, 15, 20, 0.6);
    --thin: 0 6px 30px -16px rgba(6, 6, 8, 0.6);
    --glass-stroke: linear-gradient(90deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
}

/* Container */
.premium-section {
    max-width: 1024px;
    margin: 56px auto;
    padding: calc(var(--card-pad) + 8px) 18px 34px;
    background: linear-gradient(180deg, rgba(24, 25, 40, 0.64), rgba(14, 15, 28, 0.66));
    border-radius: var(--radius);
    border: 1px solid var(--glass-edge);
    box-shadow: var(--elev), 0 0 80px rgba(246, 214, 107, 0.04);
    color: var(--text);
    backdrop-filter: blur(10px) saturate(1.05);
    position: relative;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
    -webkit-font-smoothing: antialiased;
    isolation: isolate;
}

/* thin ambient overlays for subtle depth */
.premium-section::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(400px 160px at 18% 10%, rgba(246, 214, 107, 0.04), transparent 20%),
        radial-gradient(300px 120px at 88% 82%, rgba(255, 158, 209, 0.02), transparent 22%);
    mix-blend-mode: screen;
    border-radius: inherit;
}

/* Section title */
.section-title {
    margin: 0 0 18px;
    text-align: center;
    font-weight: 700;
    font-size: clamp(1.5rem, 2.1vw, 2rem);
    color: var(--accent);
    letter-spacing: 0.6px;
    position: relative;
    padding-bottom: 8px;
}

/* slim accent bar below title */
.section-title::after {
    content: "";
    display: block;
    width: 72px;
    height: 3px;
    margin: 8px auto 0;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    box-shadow: 0 6px 18px rgba(246, 214, 107, 0.08);
}

/* Details / Accordion base */
details {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    will-change: transform;
}

/* subtle lift on hover (mobile ignores due to reduced-motion) */
details:hover {
    transform: translateY(-4px);
    box-shadow: var(--thin);
    border-color: rgba(246, 214, 107, 0.06);
}

/* Summary row */
summary {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 14px 16px;
    list-style: none;
    font-weight: 700;
    font-size: 0.98rem;
    color: var(--accent);
    user-select: none;
}

/* focus visible for keyboard accessibility */
summary:focus-visible {
    outline: 2px solid rgba(255, 158, 209, 0.12);
    outline-offset: 4px;
    border-radius: 8px;
}

/* small icon stroke sizing */
summary .icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    stroke-width: 1.8;
    opacity: 0.96;
}

/* when open, summary becomes brighter */
details[open]>summary {
    color: #ffffff;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), rgba(255, 255, 255, 0.006));
}

/* content area: smooth collapse with max-height trick */
.faq-content {
    padding: 0 16px;
    font-size: 0.98rem;
    line-height: 1.55;
    color: var(--text);
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 360ms cubic-bezier(.2, .9, .28, 1), opacity 220ms ease-in;
    will-change: max-height, opacity;
}

/* reveal */
details[open] .faq-content {
    padding: 14px 16px 18px;
    max-height: 1600px;
    /* generous */
    opacity: 1;
}

/* paragraph/list spacing */
.faq-content p,
.faq-content li {
    margin: 0 0 12px 0;
    color: var(--text);
}

/* list styles: compact & refined */
.faq-content ul {
    padding-left: 1.1em;
    margin: 6px 0;
}

.faq-content ul li {
    position: relative;
    padding-left: 24px;
    margin-bottom: 10px;
    color: var(--muted);
    font-size: 0.95rem;
}

/* subtle bullet */
.faq-content ul li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    box-shadow: 0 6px 18px rgba(246, 214, 107, 0.08);
}

/* ordered list: compact numbered badge */
.faq-content ol {
    padding-left: 0;
    margin: 6px 0;
    counter-reset: step;
}

.faq-content ol li {
    counter-increment: step;
    position: relative;
    padding-left: 38px;
    margin-bottom: 12px;
    color: var(--muted);
    font-size: 0.95rem;
}

.faq-content ol li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 2px;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    color: #0b0c15;
    box-shadow: 0 8px 20px rgba(246, 214, 107, 0.08);
    font-size: 0.85rem;
}

/* code + kbd */
code {
    background: rgba(255, 255, 255, 0.035);
    padding: 4px 8px;
    border-radius: 6px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.92rem;
    color: #f6f6f9;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 8px;
    border-radius: 6px;
    background: #12121b;
    color: #f4f4fa;
    border: 1px solid rgba(255, 255, 255, 0.03);
    font-size: 0.78rem;
    box-shadow: 0 8px 20px rgba(6, 6, 8, 0.5);
}

/* links: thin glowing underline */
.faq-content a {
    color: var(--accent);
    text-decoration: none;
    position: relative;
    transition: color var(--transition);
}

.faq-content a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 220ms ease;
    border-radius: 2px;
    opacity: 0.95;
}

.faq-content a:hover::after {
    transform: scaleX(1);
}

/* small helper: subtle divider between details when many */
.premium-section>details+details {
    margin-top: 8px;
}

/* animate-fade helper for content entry (subtle) */
@keyframes subtleFadeUp {
    from {
        opacity: 0;
        transform: translateY(6px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade {
    animation: subtleFadeUp 360ms ease both;
}

/* focus + keyboard: accessible focus ring for interactive elements inside */
.faq-content :focus {
    outline: 2px solid rgba(255, 158, 209, 0.12);
    outline-offset: 3px;
    border-radius: 6px;
}

/* icon color adapt */
summary .icon,
.faq-content svg {
    stroke: currentColor;
    color: var(--accent);
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
    :root {
        --transition: 1ms;
    }

    .premium-section::before,
    .section-title::before,
    details:hover {
        animation: none;
        transform: none;
        box-shadow: none;
    }

    .faq-content,
    details {
        transition: none;
    }
}

/* Responsive tweaks — keep everything compact on small screens */
@media (max-width: 820px) {
    .premium-section {
        margin: 36px 14px;
        padding: 18px 14px 22px;
        border-radius: 12px;
    }

    .section-title {
        font-size: 1.35rem;
        margin-bottom: 14px;
    }

    summary {
        padding: 12px 12px;
        font-size: 0.98rem;
        gap: 10px;
    }

    .faq-content {
        padding: 12px;
        font-size: 0.95rem;
    }

    .faq-content ol li::before {
        width: 26px;
        height: 26px;
        font-size: 0.78rem;
    }
}

/* Very small screens: slightly denser */
@media (max-width:420px) {
    .premium-section {
        padding: 14px 12px 18px;
    }

    .section-title {
        font-size: 1.15rem;
    }

    .faq-content p,
    .faq-content li {
        margin-bottom: 10px;
        font-size: 0.95rem;
    }
}




#install-wrapper {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

#install-btn {
    background: linear-gradient(135deg, #f6d365, #fda085);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 56px;
    height: 56px;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    opacity: 0;
    pointer-events: none;
    transform: scale(0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

#install-btn svg {
    width: 24px;
    height: 24px;
}

#install-btn.show {
    opacity: 1;
    pointer-events: auto;
    transform: scale(1);
}

/* Hover effect (only on desktop) */
@media (hover: hover) {
    #install-btn:hover {
        background: linear-gradient(135deg, #ffe259, #ffa751);
        transform: scale(1.1);
    }
}



.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* Footer Base */
.footer {
    position: relative;
    background: rgba(15, 15, 15, 0.85);
    color: #e0e0e0;
    font-family: "Inter", sans-serif;
    font-size: 14px;
    border-radius: 16px;
    padding: 20px 28px;
    margin: 24px;
    overflow: visible;
    box-shadow: 0 12px 30px rgba(0, 255, 200, 0.08);
    backdrop-filter: blur(14px);
    z-index: 1;
    transition: all 0.4s ease;
    perspective: 800px;
}

/* Hover depth */
.footer:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 45px rgba(0, 255, 200, 0.3);
}

/* RGB Border */
.footer::before {
    content: "";
    position: absolute;
    inset: -2px;
    border-radius: 18px;
    background: linear-gradient(270deg, #00ffe7, #ff00c8, #00c8ff, #00ffe7);
    background-size: 600% 600%;
    padding: 2px;
    animation: rgb-border 8s ease infinite;
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    z-index: -1;
}

@keyframes rgb-border {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Layout */
.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 1.5rem;
}

/* Branding */
.footer-left {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.branding {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #aaa;
}

.brand-name {
    font-weight: 700;
    color: #00ffe7;
    text-shadow: 0 0 6px #00ffe780;
    position: relative;
    animation: shimmer 6s linear infinite;
}

@keyframes shimmer {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
        text-shadow: 0 0 12px #00ffe7;
    }
}

.version {
    background: rgba(255, 255, 255, 0.08);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
    color: #ccc;
}

.separator {
    color: #666;
}

.updated {
    font-style: italic;
    color: #bbb;
}

/* Keyboard Tips */
.keyboard-tips {
    color: #bbb;
    font-size: 13px;
}

kbd {
    background: rgba(0, 255, 231, 0.12);
    border-radius: 5px;
    padding: 2px 6px;
    font-size: 12px;
    font-family: monospace;
    color: #00ffe7;
    border: 1px solid rgba(0, 255, 231, 0.3);
    box-shadow: 0 0 4px rgba(0, 255, 231, 0.4);
    transition: all 0.3s ease;
}

kbd:hover {
    background: rgba(0, 255, 231, 0.25);
    box-shadow: 0 0 8px rgba(0, 255, 231, 0.8);
}

/* Footer Right */
.footer-right {
    display: flex;
    flex-direction: column;
    text-align: right;
    gap: 6px;
}

.author {
    display: flex;
    align-items: center;
    gap: 8px;
}

.author a {
    color: #00ffe7;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    position: relative;
    transition: all 0.3s ease;
    font-weight: 600;
}

.author a:hover {
    color: #ffd166;
    text-shadow: 0 0 6px #ffd166;
    transform: scale(1.03);
}

/* Tooltip with Neon + Backdrop */
.tooltip-text {
    position: absolute;
    bottom: 160%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: rgba(255, 255, 255, 0.9);
    color: #000;
    padding: 7px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    box-shadow: 0 0 8px #00ffe7aa;
    backdrop-filter: blur(6px);
    z-index: 2;
}

.tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -6px;
    border-width: 6px;
    border-style: solid;
    border-color: rgba(255, 255, 255, 0.9) transparent transparent transparent;
}

.author a:hover .tooltip-text {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Home Link */
.home-link a {
    color: #ffd166;
    text-decoration: none;
    transition: text-shadow 0.3s;
    font-weight: 500;
}

.home-link a:hover {
    text-shadow: 0 0 6px #ffd166;
}



/* Responsive */
@media (max-width: 768px) {
    .keyboard-tips {
        display: none;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }

    .footer-right {
        text-align: center;
    }
}