style.css

/* ============================================================
   HELIUM x SIMPLEPAGE - style.css (hand-tuned, no framework)
   ------------------------------------------------------------
   Two voices on one stage:
     - Helium: indigo gradient, Instrument Sans, soft fade-ups,
       the pixel-dithered logo. Owns the layout.
     - SimplePage: charcoal greys, monospace, square 2px borders,
       underline-on-hover. Owns the links + settings window.
   The dither pattern from Helium's logo is the bridge between
   them (the seam under the clock, the panel's drop shadow).
   Kept lean on purpose: no backdrop-filters, no blur entrances,
   no will-change spam.
   ============================================================ */

/* ============================================================
   THEME DEFINITIONS
   ------------------------------------------------------------
   Each theme defines:
     --accent, --accent-mid, --accent-light (stage gradient)
     --el (glow / dither seam / selection highlight)
     --ink (deep shadow tint for hard dither window shadow)
     --theme-color (meta tag)
     --sp-background, --sp-dark-accent, --sp-accent,
     --sp-light-accent, --sp-highlight, --sp-text, --danger
   ============================================================ */

:root,
html[data-theme="indigo"] {
    --accent: #152671;
    --accent-mid: #1b2c78;
    --accent-light: #3b4e9b;
    --el: 175, 190, 255;
    --ink: 8, 14, 52;
    --theme-color: #152671;

    --sp-background: #0f121d;
    --sp-panel-bg: #171d30;
    --sp-dark-accent: #171d30;
    --sp-surface: #101422;
    --sp-accent: #2e3a61;
    --sp-light-accent: #9bb1ff;
    --sp-highlight: #adc2ff;
    --sp-text: #ffffff;
    --sp-muted: #c8d6ff;
    --danger: #ff4545;
}

html[data-theme="obsidian"] {
    --accent: #101014;
    --accent-mid: #191920;
    --accent-light: #2c2c36;
    --el: 210, 215, 230;
    --ink: 4, 4, 6;
    --theme-color: #101014;

    --sp-background: #0c0c0f;
    --sp-panel-bg: #18181f;
    --sp-dark-accent: #18181f;
    --sp-surface: #121216;
    --sp-accent: #3a3a48;
    --sp-light-accent: #c4c4d8;
    --sp-highlight: #e2e4f0;
    --sp-text: #ffffff;
    --sp-muted: #dcdce8;
    --danger: #ff4545;
}

html[data-theme="emerald"] {
    --accent: #06211a;
    --accent-mid: #0e382e;
    --accent-light: #165443;
    --el: 120, 240, 200;
    --ink: 3, 15, 12;
    --theme-color: #06211a;

    --sp-background: #061410;
    --sp-panel-bg: #0e261f;
    --sp-dark-accent: #0e261f;
    --sp-surface: #091a15;
    --sp-accent: #1e4a3d;
    --sp-light-accent: #5eead4;
    --sp-highlight: #a7f3d0;
    --sp-text: #ffffff;
    --sp-muted: #a7f3d0;
    --danger: #ff4545;
}

html[data-theme="crimson"] {
    --accent: #290819;
    --accent-mid: #460e2a;
    --accent-light: #6e1643;
    --el: 255, 145, 185;
    --ink: 18, 3, 11;
    --theme-color: #290819;

    --sp-background: #14050e;
    --sp-panel-bg: #290f1e;
    --sp-dark-accent: #290f1e;
    --sp-surface: #1a0813;
    --sp-accent: #541e3d;
    --sp-light-accent: #fda4af;
    --sp-highlight: #fecdd3;
    --sp-text: #ffffff;
    --sp-muted: #fecdd3;
    --danger: #ff4545;
}

html[data-theme="amber"] {
    --accent: #241306;
    --accent-mid: #3d200a;
    --accent-light: #613411;
    --el: 255, 195, 115;
    --ink: 15, 7, 2;
    --theme-color: #241306;

    --sp-background: #120903;
    --sp-panel-bg: #26160b;
    --sp-dark-accent: #26160b;
    --sp-surface: #180d04;
    --sp-accent: #522f18;
    --sp-light-accent: #fcd34d;
    --sp-highlight: #fde68a;
    --sp-text: #ffffff;
    --sp-muted: #fde68a;
    --danger: #ff4545;
}

html[data-theme="violet"] {
    --accent: #1c0933;
    --accent-mid: #301154;
    --accent-light: #521f84;
    --el: 215, 160, 255;
    --ink: 13, 3, 24;
    --theme-color: #1c0933;

    --sp-background: #0f041c;
    --sp-panel-bg: #230f38;
    --sp-dark-accent: #230f38;
    --sp-surface: #160628;
    --sp-accent: #471d6e;
    --sp-light-accent: #d8b4fe;
    --sp-highlight: #f3e8ff;
    --sp-text: #ffffff;
    --sp-muted: #f3e8ff;
    --danger: #ff4545;
}

html[data-theme="cyberpunk"] {
    --accent: #05140b;
    --accent-mid: #0a2415;
    --accent-light: #103b22;
    --el: 57, 255, 20;
    --ink: 2, 10, 5;
    --theme-color: #05140b;

    --sp-background: #040d07;
    --sp-panel-bg: #09160e;
    --sp-dark-accent: #09160e;
    --sp-surface: #07120a;
    --sp-accent: #184628;
    --sp-light-accent: #55ff99;
    --sp-highlight: #39ff14;
    --sp-text: #ffffff;
    --sp-muted: #88ffbb;
    --danger: #ff3366;
}

html[data-theme="dracula"] {
    --accent: #1e1f29;
    --accent-mid: #282a36;
    --accent-light: #383a59;
    --el: 189, 147, 249;
    --ink: 15, 16, 22;
    --theme-color: #1e1f29;

    --sp-background: #191a21;
    --sp-panel-bg: #21222c;
    --sp-dark-accent: #21222c;
    --sp-surface: #1e1f29;
    --sp-accent: #44475a;
    --sp-light-accent: #ff79c6;
    --sp-highlight: #bd93f9;
    --sp-text: #f8f8f2;
    --sp-muted: #bd93f9;
    --danger: #ff5555;
}

html[data-theme="nord"] {
    --accent: #1d212a;
    --accent-mid: #2e3440;
    --accent-light: #3b4252;
    --el: 136, 192, 208;
    --ink: 10, 12, 16;
    --theme-color: #1d212a;

    --sp-background: #1a1e26;
    --sp-panel-bg: #242933;
    --sp-dark-accent: #242933;
    --sp-surface: #1e222a;
    --sp-accent: #434c5e;
    --sp-light-accent: #81a1c1;
    --sp-highlight: #88c0d0;
    --sp-text: #eceff4;
    --sp-muted: #d8dee9;
    --danger: #bf616a;
}

html[data-theme="solarized"] {
    --accent: #001e26;
    --accent-mid: #002b36;
    --accent-light: #073642;
    --el: 42, 161, 152;
    --ink: 0, 15, 20;
    --theme-color: #001e26;

    --sp-background: #00212b;
    --sp-panel-bg: #073642;
    --sp-dark-accent: #073642;
    --sp-surface: #002b36;
    --sp-accent: #586e75;
    --sp-light-accent: #b58900;
    --sp-highlight: #2aa198;
    --sp-text: #fdf6e3;
    --sp-muted: #93a1a1;
    --danger: #dc322f;
}

html[data-theme="tokyo"] {
    --accent: #13141c;
    --accent-mid: #1a1b26;
    --accent-light: #24283b;
    --el: 125, 207, 255;
    --ink: 8, 9, 13;
    --theme-color: #13141c;

    --sp-background: #101017;
    --sp-panel-bg: #16161e;
    --sp-dark-accent: #16161e;
    --sp-surface: #13141c;
    --sp-accent: #292e42;
    --sp-light-accent: #bb9af7;
    --sp-highlight: #7aa2f7;
    --sp-text: #c0caf5;
    --sp-muted: #a9b1d6;
    --danger: #f7768e;
}

html[data-theme="gruvbox"] {
    --accent: #1d2021;
    --accent-mid: #282828;
    --accent-light: #3c3836;
    --el: 254, 128, 25;
    --ink: 12, 14, 15;
    --theme-color: #1d2021;

    --sp-background: #1d2021;
    --sp-panel-bg: #282828;
    --sp-dark-accent: #282828;
    --sp-surface: #202222;
    --sp-accent: #504945;
    --sp-light-accent: #fabd2f;
    --sp-highlight: #fe8019;
    --sp-text: #fbf1c7;
    --sp-muted: #ebdbb2;
    --danger: #fb4934;
}

html[data-theme="monochrome"] {
    --accent: #000000;
    --accent-mid: #0a0a0a;
    --accent-light: #161616;
    --el: 255, 255, 255;
    --ink: 0, 0, 0;
    --theme-color: #000000;

    --sp-background: #050505;
    --sp-panel-bg: #111111;
    --sp-dark-accent: #111111;
    --sp-surface: #0a0a0a;
    --sp-accent: #333333;
    --sp-light-accent: #cccccc;
    --sp-highlight: #ffffff;
    --sp-text: #ffffff;
    --sp-muted: #dddddd;
    --danger: #ff3333;
}

html[data-theme="c64"] {
    --accent: #251c5a;
    --accent-mid: #352879;
    --accent-light: #4f3fa3;
    --el: 168, 192, 255;
    --ink: 12, 8, 38;
    --theme-color: #251c5a;

    --sp-background: #1c1447;
    --sp-panel-bg: #2c206b;
    --sp-dark-accent: #2c206b;
    --sp-surface: #211854;
    --sp-accent: #554899;
    --sp-light-accent: #b8b2ff;
    --sp-highlight: #a8c0ff;
    --sp-text: #ffffff;
    --sp-muted: #c8c2ff;
    --danger: #ff5577;
}

:root {
    /* --- Shared Static Tokens --- */
    --font: "Instrument Sans", sans-serif;
    --white: #fff;
    --mono: "JetBrains Mono", ui-monospace, monospace;
    --type: "JetBrains Mono", ui-monospace, monospace;
    --bg-grad: linear-gradient(180deg, var(--accent) 10%, var(--accent-mid) 30%, var(--accent-light) 100%);

    --edge: 1.5rem;
    --panel-w: 360px;
    --logo-size: 96px;
    /* 2px checkerboard, matching logo's dither cells */
    --dither: repeating-conic-gradient(currentColor 0 25%, transparent 0 50%) 0 0 / 4px 4px;

    /* Underline Customization Variables (defaults) */
    --underline-bg: var(--dither);
    --underline-origin: center;
    --underline-speed: 0.12s;
    --underline-gap: 3px;
    --underline-height: 2px;
}

/* ============================================================
   HOVER UNDERLINE CUSTOMIZATION VARIANTS
   ============================================================ */
/* Underline Styles */
html[data-underline-style="dither"] {
    --underline-bg: var(--dither);
    --underline-height: 2px;
}
html[data-underline-style="solid"] {
    --underline-bg: currentColor;
    --underline-height: 2px;
}
html[data-underline-style="dashed"] {
    --underline-bg: repeating-linear-gradient(90deg, currentColor 0 5px, transparent 5px 9px);
    --underline-height: 2px;
}
html[data-underline-style="dotted"] {
    --underline-bg: repeating-linear-gradient(90deg, currentColor 0 2px, transparent 2px 5px);
    --underline-height: 2px;
}
html[data-underline-style="double"] {
    --underline-bg: linear-gradient(180deg, currentColor 0 1px, transparent 1px 2px, currentColor 2px 3px);
    --underline-height: 3px;
}
html[data-underline-style="none"] {
    --underline-bg: transparent;
}

/* Underline Directions */
html[data-underline-dir="center"] {
    --underline-origin: center;
}
html[data-underline-dir="left"] {
    --underline-origin: left;
}
html[data-underline-dir="right"] {
    --underline-origin: right;
}
html[data-underline-dir="instant"] {
    --underline-origin: center;
    --underline-speed: 0s;
}

/* Underline Speeds */
html[data-underline-speed="fast"] {
    --underline-speed: 0.08s;
}
html[data-underline-speed="normal"] {
    --underline-speed: 0.12s;
}
html[data-underline-speed="smooth"] {
    --underline-speed: 0.24s;
}
html[data-underline-speed="instant"] {
    --underline-speed: 0s;
}

/* Underline Gaps */
html[data-underline-gap="tight"] {
    --underline-gap: 1px;
}
html[data-underline-gap="normal"] {
    --underline-gap: 3px;
}
html[data-underline-gap="loose"] {
    --underline-gap: 5px;
}

/* ============================================================
   CLOCK & TIME VARIANTS
   ============================================================ */
/* Clock Styles */
html[data-clock-style="sans"] #clock {
    font-family: var(--font);
    font-weight: 300;
}
html[data-clock-style="mono"] #clock {
    font-family: var(--mono);
    font-weight: 400;
    letter-spacing: -0.02em;
}
html[data-clock-style="dither"] #clock {
    font-family: var(--mono);
    font-weight: 700;
    letter-spacing: 0.04em;
    display: inline-block;
    background-image: 
        repeating-conic-gradient(#ffffff 0 25%, transparent 0 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.95) 0%, rgba(var(--el), 0.75) 40%, transparent 75%),
        linear-gradient(135deg, #ffffff 0%, rgba(var(--el), 0.85) 25%, rgba(var(--ink), 0.95) 50%, rgba(var(--el), 0.8) 75%, #ffffff 100%);
    background-size: 
        4px 4px,
        220% 220%,
        300% 300%;
    background-position: 
        0 0,
        0% 0%,
        0% 50%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    filter: none;
    animation: ditherNoiseWave 6s ease-in-out infinite alternate;
}

@keyframes ditherNoiseWave {
    0% {
        background-position: 
            0 0,
            10% 20%,
            0% 50%;
    }
    33% {
        background-position: 
            0 0,
            85% 15%,
            50% 100%;
    }
    66% {
        background-position: 
            0 0,
            95% 85%,
            100% 30%;
    }
    100% {
        background-position: 
            0 0,
            25% 95%,
            20% 0%;
    }
}

html[data-clock-style="dither"] #clock .colon,
html[data-clock-style="dither"] #clock .clock-sec,
html[data-clock-style="dither"] #clock .clock-ampm {
    position: static;
    font-weight: 700;
    background-image: 
        repeating-conic-gradient(#ffffff 0 25%, transparent 0 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.95) 0%, rgba(var(--el), 0.75) 40%, transparent 75%),
        linear-gradient(135deg, #ffffff 0%, rgba(var(--el), 0.85) 25%, rgba(var(--ink), 0.95) 50%, rgba(var(--el), 0.8) 75%, #ffffff 100%);
    background-size: 
        4px 4px,
        220% 220%,
        300% 300%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    filter: none;
    animation: ditherNoiseWave 6s ease-in-out infinite alternate;
}

html[data-clock-style="dither"] #clock .colon {
    margin: 0 0.08em;
    opacity: 0.85;
}

html[data-clock-style="dither"] #clock .clock-sec {
    font-size: 0.44em;
    margin-left: 4px;
    vertical-align: baseline;
}

html[data-clock-style="dither"] #clock .clock-ampm {
    font-size: 0.3em;
    margin-left: 8px;
    vertical-align: baseline;
}

/* Date Font Styles (independent from clock/time) */
html[data-date-style="sans"] #date {
    font-family: var(--font);
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.6);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    -webkit-text-fill-color: initial;
    animation: none;
}

html[data-date-style="mono"] #date {
    font-family: var(--mono);
    font-weight: 400;
    letter-spacing: 0.04em;
    text-transform: none;
    font-size: 1rem;
    color: rgba(var(--el), 0.85);
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    -webkit-text-fill-color: initial;
    animation: none;
}

html[data-date-style="dither"] #date {
    font-family: var(--mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 1rem;
    font-weight: 700;
    display: inline-block;
    background-image: 
        repeating-conic-gradient(#ffffff 0 25%, transparent 0 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.95) 0%, rgba(var(--el), 0.75) 40%, transparent 75%),
        linear-gradient(135deg, #ffffff 0%, rgba(var(--el), 0.85) 25%, rgba(var(--ink), 0.95) 50%, rgba(var(--el), 0.8) 75%, #ffffff 100%);
    background-size: 
        4px 4px,
        220% 220%,
        300% 300%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    filter: none;
    animation: ditherNoiseWave 6s ease-in-out infinite alternate;
}

/* Clock Sizes */
html[data-clock-size="compact"] #clock {
    font-size: 5rem;
}
html[data-clock-size="normal"] #clock {
    font-size: 7rem;
}
html[data-clock-size="giant"] #clock {
    font-size: 9.2rem;
}

/* Seconds and AM/PM indicators */
.clock-sec {
    font-size: 0.42em;
    opacity: 0.7;
    margin-left: 6px;
    font-family: var(--mono);
    font-weight: 400;
    letter-spacing: 0;
    vertical-align: super;
}
.clock-ampm {
    font-size: 0.28em;
    opacity: 0.75;
    margin-left: 8px;
    letter-spacing: 0.06em;
    font-family: var(--mono);
    text-transform: uppercase;
    vertical-align: super;
}

/* ---------- fonts (all self-hosted, CSP is font-src 'self') ---------- */
/* latin-ext */
@font-face {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 300 600;
    font-stretch: 100%;
    font-display: swap;
    src: url(instrument-sans-latin-ext.woff2) format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* latin */
@font-face {
    font-family: 'Instrument Sans';
    font-style: normal;
    font-weight: 300 600;
    font-stretch: 100%;
    font-display: swap;
    src: url(instrument-sans-latin.woff2) format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* latin-ext */
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url(jetbrains-mono-latin-ext.woff2) format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* latin */
@font-face {
    font-family: 'JetBrains Mono';
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url(jetbrains-mono-latin.woff2) format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- base ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    /* matches the bottom of the gradient so overscroll never flashes white */
    background: var(--accent-light);
    transition: background 0.35s ease;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

/* ============================================================
   LENIS SMOOTH SCROLL
   ============================================================ */
html.lenis,
html.lenis body {
    height: auto;
}

.lenis.lenis-smooth {
    scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
    overscroll-behavior: contain;
}

.lenis.lenis-stopped {
    overflow: hidden;
}

.lenis.lenis-smooth iframe {
    pointer-events: none;
}

body {
    min-height: 100vh;
    min-height: 100dvh;
    font-family: var(--font);
    color: var(--white);
    background: var(--bg-grad);
    overflow-x: hidden;
    cursor: default;
    -webkit-user-select: none;
    user-select: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

/* Hide scrollbars across Chrome, Safari, Edge, Opera, and Firefox */
html::-webkit-scrollbar,
body::-webkit-scrollbar,
.panel::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

button {
    background: none;
    border: none;
    color: inherit;
    font: inherit;
    cursor: pointer;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid var(--white);
    outline-offset: 2px;
}

/* ============================================================
   HELIUM STAGE
   ============================================================ */
.stage {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /* top/bottom room so the fixed settings trigger never overlaps */
    padding: 3.5rem var(--edge);
    box-sizing: border-box;
}

.logo-wrap {
    margin-bottom: 1.5rem;
    pointer-events: none;
    opacity: 1;
    transform: none;
}

#app-3d {
    display: block;
    width: var(--logo-size);
    height: var(--logo-size);
    opacity: 0.95;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.clock-block {
    margin-bottom: 2rem;
    text-align: center;
    pointer-events: none;
    opacity: 1;
    transform: none;
}

#clock {
    font-size: 6rem;
    font-weight: 500;
    line-height: 1;
    letter-spacing: -0.05em;
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
    color: #fff;
}

#clock .colon {
    opacity: 0.4;
    font-weight: 300;
    margin: 0 0.05em;
    position: relative;
    top: -0.02em;
}

#date {
    margin-top: 0.5rem;
    font-size: 1.15rem;
    font-weight: 500;
    line-height: 1.625;
    max-width: 36rem;
    color: rgba(255, 255, 255, 0.55);
}

/* the hand-off from Helium's sans to SimplePage's mono */
.seam {
    width: 2.5rem;
    height: 4px;
    margin-bottom: 2rem;
    color: rgba(var(--el), 0.45);
    background: var(--dither);
    opacity: 1;
    transform: none;
}

/* ============================================================
   SIMPLEPAGE LINKS (on the Helium stage)
   ============================================================ */
.link-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-family: var(--mono);
    font-size: 0.95rem;
    opacity: 1;
    transform: none;
}

.link {
    display: inline-flex;
    align-items: center;
}

.link a {
    display: inline-flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: color 0.12s ease;
}

.link a:hover,
.link a:focus-visible {
    color: var(--white);
}

/* favicon, or the square initial shown until one loads */
.icon {
    flex: none;
    width: 20px;
    height: 20px;
    margin-right: 10px;
}

.glyph {
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, 0.35);
    font-size: 11px;
    line-height: 1;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.75);
}

/* text sits in its own span so it can be aligned separately from the icon */
.label {
    position: relative;
    flex: 0 1 auto;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-bottom: var(--underline-gap, 3px);
}

.label::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: var(--underline-height, 2px);
    color: var(--white);
    background: var(--underline-bg, var(--dither));
    transform: scaleX(0);
    transform-origin: var(--underline-origin, center);
    transition: transform var(--underline-speed, 0.12s) ease-out;
}

.link a:hover .label::after,
.link a:focus-visible .label::after {
    transform: scaleX(1);
}

.remove {
    display: none;
    flex: none;
    padding: 0 6px;
    font-family: var(--mono);
    font-size: 1.2rem;
    line-height: 1;
    color: rgba(255, 255, 255, 0.45);
    transition: color 0.15s;
}

.remove:hover {
    color: var(--danger);
}

/* ---------- driven by the settings ---------- */
/* ---------- Visibility toggles driven by settings ---------- */
html[data-hide-clock="true"] #clock {
    display: none;
}

html[data-hide-date="true"] #date {
    display: none;
}

html[data-hide-clock="true"] #date {
    margin-top: 0;
}

html[data-hide-clock="true"][data-hide-date="true"] .clock-block {
    display: none;
    margin-bottom: 0;
}

html[data-hide-separator="true"] .seam,
html[data-hide-seperator="true"] .seam {
    display: none;
    margin-bottom: 0;
}

html[data-hide-links="true"] .link-container {
    display: none;
}

html[data-editing="true"] .remove {
    display: block;
}

html[data-icons="false"] .link .icon {
    display: none;
}

html[data-row="false"] .link-container {
    width: fit-content;
    min-width: 12rem;
    max-width: 100%;
}

html[data-row="true"] .link-container {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 28px;
}

/* "with text" mode: the icon + label move together */
html[data-align="left"] .link a {
    justify-content: flex-start;
}

html[data-align="center"] .link a {
    justify-content: center;
}

html[data-align="right"] .link a {
    justify-content: flex-end;
}

/* icon pinned to an edge: the label fills the rest of the row */
html[data-icon-align="left"] .label,
html[data-icon-align="right"] .label {
    flex: 1;
}

html[data-icon-align="right"] .link .icon {
    order: 1;
    margin: 0 0 0 10px;
}

/* text alignment inside the label (visible when the label is stretched) */
html[data-align="left"] .label {
    text-align: left;
}

html[data-align="center"] .label {
    text-align: center;
}

html[data-align="right"] .label {
    text-align: right;
}

/* ============================================================
   SIMPLEPAGE SETTINGS (trigger + window)
   ============================================================ */
.settings {
    position: fixed;
    top: var(--edge);
    right: var(--edge);
    z-index: 10;
}

.settings-btn {
    position: relative;
    padding: 2px 0 var(--underline-gap, 3px) 0;
    font-family: var(--mono);
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
}

.settings-btn::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: var(--underline-height, 2px);
    color: var(--white);
    background: var(--underline-bg, var(--dither));
    transform: scaleX(0);
    transform-origin: var(--underline-origin, center);
    transition: transform var(--underline-speed, 0.12s) ease-out;
}

.settings-btn:hover {
    color: var(--white);
}

.settings-btn:hover::after,
.settings-btn[aria-expanded="true"]::after {
    transform: scaleX(1);
}

.settings-btn[aria-expanded="true"] {
    color: var(--white);
}

#window {
    position: fixed;
    top: calc(var(--edge) + 2.25rem);
    right: var(--edge);
    width: var(--panel-w);
    max-width: calc(100vw - var(--edge) * 2);
    z-index: 10;
    isolation: isolate;
}

/* the `hidden` attribute loses to `display` rules, so force it */
#window[hidden] {
    display: none;
}

/* a hard, dithered drop shadow: SimplePage's square box casting Helium's pixels */
#window::after {
    content: "";
    position: absolute;
    inset: 6px -6px -6px 6px;
    z-index: -1;
    color: rgba(var(--ink), 0.75);
    background: var(--dither);
    pointer-events: none;
}

.panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: calc(100dvh - var(--edge) * 2 - 2.25rem - 6px);
    overflow-y: auto;
    padding: 18px 20px;
    font-family: var(--mono);
    font-size: 0.88rem;
    color: var(--sp-text);
    background: var(--sp-panel-bg);
    border: 2px solid var(--sp-highlight);
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.panel hr {
    width: 100%;
    border: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    padding: 2px 0;
}

.group-header:hover .group-title {
    color: var(--white);
}

.group-title {
    font-family: var(--mono);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sp-light-accent);
    transition: color 0.12s ease;
}

.group-toggle-btn {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1.5px solid var(--sp-highlight);
    background: transparent;
    color: var(--sp-highlight);
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.group-toggle-btn:hover {
    background: var(--sp-highlight);
    color: var(--sp-panel-bg);
}

.group-toggle-btn .toggle-symbol {
    pointer-events: none;
    display: block;
    line-height: 1;
    margin-top: -1px;
}

.group[data-collapsed="true"] .group-body {
    display: none;
}

.group-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    color: var(--white);
}

.toggle label {
    position: relative;
    cursor: pointer;
    font-size: 0.9rem;
    color: #ffffff;
    padding-bottom: var(--underline-gap, 3px);
}

.toggle label::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: var(--underline-height, 2px);
    color: var(--white);
    background: var(--underline-bg, var(--dither));
    transform: scaleX(0);
    transform-origin: var(--underline-origin, center);
    transition: transform var(--underline-speed, 0.12s) ease-out;
}

.toggle label:hover::after {
    transform: scaleX(1);
}

.toggle.stack {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}

.toggle.stack span {
    font-size: 0.85rem;
    color: var(--sp-muted);
}

/* ---------- checkbox: sharp retro square ---------- */
.check {
    appearance: none;
    -webkit-appearance: none;
    flex: none;
    display: grid;
    place-content: center;
    width: 16px;
    height: 16px;
    margin: 0;
    background: transparent;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    border-radius: 0;
    cursor: pointer;
}

.check:hover {
    border-color: var(--white);
}

.check::before {
    content: "";
    width: 8px;
    height: 8px;
    background: var(--white);
    display: none;
}

.check:checked {
    border-color: var(--white);
}

.check:checked::before {
    display: block;
}

/* ---------- segmented buttons: clean text options without boxes ---------- */
.segmented {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.segmented button {
    position: relative;
    padding: 2px 0 var(--underline-gap, 3px) 0;
    font-family: var(--mono);
    font-size: 0.88rem;
    color: var(--sp-muted);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.segmented button::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: var(--underline-height, 2px);
    color: var(--white);
    background: var(--underline-bg, var(--dither));
    transform: scaleX(0);
    transform-origin: var(--underline-origin, center);
    transition: transform var(--underline-speed, 0.12s) ease-out;
}

.segmented button:hover {
    color: var(--white);
}

.segmented button:hover::after,
.segmented button.active::after {
    transform: scaleX(1);
}

.segmented button.active {
    background: none;
    color: var(--white);
    border: none;
    font-weight: 700;
}

/* ---------- theme picker: clean text options without boxes ---------- */
.theme-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px 12px;
    width: 100%;
}

.theme-grid button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    padding: 2px 0 var(--underline-gap, 3px) 0;
    font-family: var(--mono);
    font-size: 0.88rem;
    width: fit-content;
    color: var(--sp-muted);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.theme-grid button::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: var(--underline-height, 2px);
    color: var(--white);
    background: var(--underline-bg, var(--dither));
    transform: scaleX(0);
    transform-origin: var(--underline-origin, center);
    transition: transform var(--underline-speed, 0.12s) ease-out;
}

.theme-grid button:hover {
    color: var(--white);
}

.theme-grid button:hover::after,
.theme-grid button.active::after {
    transform: scaleX(1);
}

.theme-grid button.active {
    background: none;
    color: var(--white);
    border: none;
    font-weight: 700;
}

/* ---------- Retro Select & Dropdowns ---------- */
.retro-select {
    width: 100%;
    padding: 6px 10px;
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--sp-text);
    background: var(--sp-surface);
    border: 2px solid var(--sp-accent);
    border-radius: 0;
    cursor: pointer;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20width='10'%20height='6'%20viewBox='0%200%2010%206'%3E%3Cpolygon%20points='0,0%2010,0%205,6'%20fill='%23adc2ff'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
    transition: border-color 0.15s ease;
}

.retro-select:focus {
    border-color: var(--sp-highlight);
}

.retro-select option {
    background: var(--sp-panel-bg);
    color: var(--sp-text);
}

.group-header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.mini-btn {
    padding: 2px 8px;
    font-family: var(--mono);
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--sp-muted);
    background: var(--sp-surface);
    border: 1.5px solid var(--sp-accent);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s ease;
}

.mini-btn:hover {
    color: var(--white);
    border-color: var(--sp-highlight);
}

.mini-btn.active {
    background: var(--sp-accent);
    color: var(--white);
    border-color: var(--sp-highlight);
}

/* Theme Selector Views */
html[data-theme-view="grid"] #theme-select {
    display: none;
}

html[data-theme-view="dropdown"] .theme-grid {
    display: none;
}

html[data-theme-view="dropdown"] #theme-select {
    display: block;
    width: 100%;
}

.swatch {
    display: none;
}

/* ---------- add form ---------- */
.add-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.add-form input[type="text"] {
    width: 100%;
    padding: 6px 8px;
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--white);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0;
    outline: none;
    -webkit-user-select: text;
    user-select: text;
}

.add-form input[type="text"]::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

.add-form input[type="text"]:focus {
    border-color: var(--white);
}

.add-form input[type="text"].invalid {
    border-color: var(--danger);
}

.add-form .segmented {
    margin-top: 4px;
    gap: 16px;
}

#add-site {
    position: relative;
    background: none;
    color: var(--white);
    border: none;
    padding: 2px 0;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

#add-site::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    color: var(--white);
    background: var(--dither);
    transform: scaleX(1);
    transform-origin: center;
    transition: transform 0.12s ease-out;
}

#add-site:hover {
    opacity: 0.8;
}

#reset-sites {
    position: relative;
    background: none;
    color: var(--sp-muted);
    border: none;
    padding: 2px 0;
    text-decoration: none;
    cursor: pointer;
}

#reset-sites::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    color: var(--danger);
    background: var(--dither);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.12s ease-out;
}

#reset-sites:hover {
    color: var(--danger);
}

#reset-sites:hover::after {
    transform: scaleX(1);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (min-width: 48rem) {
    #clock {
        font-size: 8rem;
    }

    #date {
        font-size: 1.25rem;
    }
}

/* mid-size screens: slide the stage left so the open window never covers it */
@media (min-width: 800px) and (max-width: 1279px) {
    html[data-menu="open"] .stage {
        padding-right: calc(var(--panel-w) + var(--edge) * 2);
    }
}

/* short viewports (laptops, landscape tablets): tighten the vertical rhythm */
@media (max-height: 760px) {
    :root {
        --logo-size: 72px;
    }

    .stage {
        padding-top: 3.5rem;
        padding-bottom: 3.5rem;
    }

    .logo-wrap {
        margin-bottom: 1rem;
    }

    #clock {
        font-size: 6rem;
    }

    .clock-block,
    .seam {
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --edge: 1rem;
    }

    #window {
        left: var(--edge);
        width: auto;
    }

    html[data-row="true"] .link-container {
        gap: 10px 20px;
    }
}

@media (max-width: 380px) {
    #clock {
        font-size: 4.5rem !important;
    }
}

@media (prefers-reduced-motion: reduce) {

    .logo-wrap,
    .clock-block,
    .seam,
    .link-container,
    #window {
        animation: none;
    }

    .stage {
        transition: none;
    }
}

::selection {
    background: rgba(var(--el), 0.3);
    color: #fff;
}