/* ============================================================
   mujun.io — retro-arcade gateway for living paradoxes
   Pixel-art sidebar + classical serif body + warm palette
   ============================================================ */

:root {
    /* Primary warmth (arcade-wood zone) */
    --honeycomb: #F4D9B8;
    --caramel: #D4A574;
    --cinnamon: #A67C52;
    --espresso: #8B5E3D;
    --ink: #5A3D26;

    /* Accent warmth (bubble glow) */
    --golden: #FFD966;
    --salmon: #F5A765;
    --copper: #E8956A;

    /* Cool relief (contradiction marker) */
    --sage: #7A9E99;

    /* Soft backgrounds / cards */
    --cream: #F9F3E8;

    /* Type */
    --serif-display: 'Cormorant Garamond', Georgia, serif;
    --serif-body: 'Crimson Text', Georgia, serif;
    --mono: 'IBM Plex Mono', 'Courier New', monospace;

    /* Sidebar */
    --sidebar-w: 220px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--serif-body);
    font-size: 17px;
    line-height: 1.7;
    color: var(--espresso);
    background-color: var(--honeycomb);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ---------- Texture overlays ---------- */
.grid-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background-image:
        repeating-linear-gradient(
            0deg,
            rgba(139, 94, 61, 0.05) 0px,
            rgba(139, 94, 61, 0.05) 1px,
            transparent 1px,
            transparent 16px
        ),
        repeating-linear-gradient(
            90deg,
            rgba(139, 94, 61, 0.05) 0px,
            rgba(139, 94, 61, 0.05) 1px,
            transparent 1px,
            transparent 16px
        );
}

.noise-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    opacity: 0.04;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
    mix-blend-mode: multiply;
}

/* ---------- Bubble field (ambient) ---------- */
.bubble-field {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 3;
    overflow: hidden;
}

.bubble {
    position: absolute;
    bottom: -120px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%,
        rgba(255, 217, 102, 0.85) 0%,
        rgba(245, 167, 101, 0.55) 60%,
        rgba(232, 149, 106, 0.25) 100%);
    box-shadow:
        inset -3px -4px 8px rgba(139, 94, 61, 0.18),
        inset 3px 3px 6px rgba(255, 255, 255, 0.35),
        0 0 12px rgba(255, 217, 102, 0.18);
    opacity: 0;
    will-change: transform, opacity;
}

.bubble::before {
    content: "";
    position: absolute;
    top: 16%;
    left: 18%;
    width: 22%;
    height: 22%;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.55);
    filter: blur(1px);
}

@keyframes bubbleDrift {
    0% {
        transform: translate3d(0, 0, 0) scale(0.92);
        opacity: 0;
    }
    8% {
        opacity: 0.85;
    }
    50% {
        transform: translate3d(var(--sway, 18px), -50vh, 0) scale(1);
    }
    92% {
        opacity: 0.8;
    }
    100% {
        transform: translate3d(0, -110vh, 0) scale(1.05);
        opacity: 0;
    }
}

/* ---------- Sidebar (arcade cabinet) ---------- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-w);
    height: 100vh;
    z-index: 20;
    padding: 14px 12px;
    background-color: var(--caramel);
    border-right: 4px solid var(--cinnamon);
    overflow-y: auto;
    overflow-x: hidden;
    font-family: var(--mono);
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}
.sidebar::-webkit-scrollbar-track {
    background: var(--caramel);
}
.sidebar::-webkit-scrollbar-thumb {
    background: var(--cinnamon);
}

.cabinet-frame {
    position: relative;
    background-color: var(--honeycomb);
    border: 4px solid var(--espresso);
    box-shadow:
        inset 0 0 0 2px var(--caramel),
        inset 0 0 0 6px var(--cinnamon),
        4px 4px 0 var(--cinnamon);
    padding: 14px 10px 10px;
    border-radius: 6px;
    min-height: calc(100vh - 28px);
    display: flex;
    flex-direction: column;
}

.cabinet-top,
.cabinet-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--mono);
    font-size: 13px;
    color: var(--espresso);
    padding: 2px 4px;
    margin-bottom: 8px;
}

.cabinet-bottom {
    margin-top: 12px;
    margin-bottom: 0;
}

.bracket {
    color: var(--cinnamon);
    font-weight: 500;
}

.screw {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cream);
    border: 2px solid var(--cinnamon);
    box-shadow: inset 0 0 0 1px var(--caramel);
    display: inline-block;
    position: relative;
}

.screw::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--cinnamon);
}

/* Enter chip */
.enter-chip {
    border: 3px solid var(--espresso);
    background-color: var(--cream);
    padding: 8px 6px;
    text-align: center;
    margin-bottom: 14px;
    box-shadow: inset 0 0 0 2px var(--caramel);
    position: relative;
}

.chip-label {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.16em;
    color: var(--espresso);
    display: block;
    text-transform: uppercase;
}

.chip-sub {
    display: block;
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.18em;
    color: var(--cinnamon);
    margin-top: 4px;
}

/* LED indicator */
.led-light {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--salmon);
    border-radius: 1px;
    box-shadow:
        0 0 4px var(--salmon),
        inset 0 0 0 1px rgba(0,0,0,0.15);
    vertical-align: middle;
    margin-right: 6px;
    animation: ledFlicker 2.4s ease-in-out infinite;
}

.led-light.alt {
    background: var(--golden);
    box-shadow:
        0 0 4px var(--golden),
        inset 0 0 0 1px rgba(0,0,0,0.15);
    animation-delay: -0.7s;
}

@keyframes ledFlicker {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* Paradox index */
.paradox-index {
    flex: 1 0 auto;
    margin-bottom: 12px;
}

.index-section + .index-section {
    margin-top: 8px;
}

.index-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    background: transparent;
    border: 0;
    border-bottom: 1px dashed var(--cinnamon);
    color: var(--espresso);
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    padding: 4px 2px;
    cursor: pointer;
    text-transform: uppercase;
}

.index-toggle:hover {
    color: var(--salmon);
}

.caret {
    display: inline-block;
    transition: transform 220ms cubic-bezier(0.34, 1.56, 0.64, 1);
    font-size: 10px;
    color: var(--cinnamon);
    width: 10px;
}

.index-toggle[aria-expanded="false"] .caret {
    transform: rotate(-90deg);
}

.index-list {
    list-style: none;
    overflow: hidden;
    transition: max-height 320ms cubic-bezier(0.34, 1.56, 0.64, 1);
    max-height: 240px;
}

.index-list.collapsed {
    max-height: 0;
}

.index-list li {
    margin: 4px 0;
}

.index-link {
    display: flex;
    align-items: baseline;
    gap: 6px;
    padding: 3px 4px;
    text-decoration: none;
    color: var(--espresso);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    border-left: 2px solid transparent;
    transition: border-color 160ms ease, color 160ms ease, background-color 160ms ease;
    text-transform: uppercase;
    position: relative;
}

.index-link:hover {
    color: var(--ink);
    background-color: rgba(245, 167, 101, 0.18);
    border-left-color: var(--salmon);
}

.index-link.active {
    color: var(--ink);
    background-color: rgba(255, 217, 102, 0.35);
    border-left-color: var(--espresso);
}

.hi-score {
    font-size: 9px;
    color: var(--cinnamon);
    font-weight: 500;
}

/* Cabinet foot */
.cabinet-foot {
    border-top: 2px dashed var(--cinnamon);
    padding-top: 10px;
    margin-top: 12px;
}

.ui-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    color: var(--espresso);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.ui-value {
    color: var(--cinnamon);
    font-weight: 500;
}

.exit-link {
    display: flex;
    align-items: center;
    width: 100%;
    background: var(--cream);
    border: 2px solid var(--espresso);
    color: var(--espresso);
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: 0.12em;
    padding: 6px 4px;
    margin-top: 8px;
    cursor: pointer;
    text-transform: uppercase;
    transition: background-color 160ms ease, transform 120ms ease;
    position: relative;
    overflow: hidden;
}

.exit-link:hover {
    background-color: var(--golden);
}

.exit-link:active {
    transform: scale(0.96);
}

.return-btn {
    display: block;
    width: 100%;
    margin-top: 8px;
    background: var(--salmon);
    color: var(--cream);
    border: 2px solid var(--espresso);
    box-shadow: 2px 2px 0 var(--cinnamon);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.16em;
    padding: 6px 4px;
    cursor: pointer;
    text-transform: uppercase;
    transition: transform 140ms cubic-bezier(0.34, 1.56, 0.64, 1),
        background-color 160ms ease,
        box-shadow 140ms ease;
}

.return-btn:hover {
    background: var(--golden);
    color: var(--ink);
}

.return-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 0 0 0 var(--cinnamon);
}

/* ---------- Main content ---------- */
.content {
    margin-left: var(--sidebar-w);
    padding: 56px clamp(28px, 6vw, 80px) 100px;
    max-width: 980px;
    position: relative;
    z-index: 5;
}

/* Hero */
.hero {
    margin-bottom: 80px;
    padding-bottom: 24px;
    position: relative;
}

.hero-bracket {
    font-family: var(--mono);
    font-size: 14px;
    letter-spacing: 0.4em;
    color: var(--cinnamon);
    margin-bottom: 8px;
}

.hero-eyebrow {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.36em;
    color: var(--salmon);
    text-transform: uppercase;
    margin-bottom: 16px;
}

.hero-title {
    font-family: var(--serif-display);
    font-weight: 700;
    font-size: clamp(56px, 10vw, 112px);
    line-height: 0.95;
    color: var(--espresso);
    margin-bottom: 18px;
    text-shadow: 1px 1px 0 rgba(139, 94, 61, 0.18),
        2px 2px 0 rgba(139, 94, 61, 0.08);
    letter-spacing: -0.01em;
}

.hero-sub {
    font-family: var(--serif-body);
    font-size: clamp(18px, 2vw, 22px);
    color: var(--ink);
    max-width: 60ch;
    margin-bottom: 20px;
    text-shadow: 1px 1px 0 rgba(139, 94, 61, 0.1);
    font-style: italic;
}

.hero-meta {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    color: var(--cinnamon);
    text-transform: uppercase;
    display: flex;
    align-items: center;
}

/* Pixel separator */
.separator {
    font-family: var(--mono);
    color: var(--cinnamon);
    font-size: 10px;
    letter-spacing: 0.2em;
    margin: 28px 0;
    opacity: 0.6;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: clip;
}

/* Paradox card */
.paradox {
    padding: 32px 36px 28px;
    margin-bottom: 36px;
    background: var(--cream);
    border: 3px solid var(--espresso);
    border-radius: 8px;
    box-shadow:
        inset 0 0 0 2px var(--caramel),
        4px 4px 0 var(--cinnamon);
    position: relative;
    transform: translateY(8px);
    opacity: 0;
    transition: transform 600ms cubic-bezier(0.34, 1.56, 0.64, 1),
        opacity 600ms ease;
}

.paradox.is-visible {
    transform: translateY(0);
    opacity: 1;
}

.paradox::before {
    content: "⌢ ⌣ L ⌢";
    position: absolute;
    top: -12px;
    left: 16px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.3em;
    color: var(--cinnamon);
    background: var(--honeycomb);
    padding: 0 8px;
}

.paradox::after {
    content: "";
    position: absolute;
    bottom: -8px;
    right: 16px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--cream);
    border: 2px solid var(--cinnamon);
}

.paradox-tag {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.28em;
    color: var(--salmon);
    text-transform: uppercase;
    margin-bottom: 10px;
}

.paradox-title {
    font-family: var(--serif-display);
    font-weight: 700;
    font-size: clamp(34px, 4.6vw, 52px);
    line-height: 1.05;
    color: var(--espresso);
    margin-bottom: 18px;
    text-shadow: 1px 1px 0 rgba(139, 94, 61, 0.16);
}

.paradox-body {
    font-family: var(--serif-body);
    font-size: 17px;
    line-height: 1.75;
    color: var(--ink);
    margin-bottom: 14px;
    text-shadow: 1px 1px 0 rgba(139, 94, 61, 0.06);
}

/* Tint reveal on body when in view */
.paradox.is-visible .paradox-body {
    animation: bodyTint 800ms ease forwards;
}

@keyframes bodyTint {
    0% { background-color: rgba(255, 217, 102, 0.0); }
    35% { background-color: rgba(255, 217, 102, 0.18); }
    100% { background-color: rgba(255, 217, 102, 0); }
}

/* Lever button */
.paradox-pull {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.lever {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    background: var(--salmon);
    color: var(--cream);
    border: 3px solid var(--espresso);
    padding: 10px 18px;
    cursor: pointer;
    box-shadow: 3px 3px 0 var(--cinnamon);
    transition: transform 140ms cubic-bezier(0.34, 1.56, 0.64, 1),
        background-color 160ms ease,
        box-shadow 140ms ease,
        color 160ms ease;
    position: relative;
    overflow: hidden;
}

.lever::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center,
        rgba(255, 217, 102, 0.7) 0%,
        rgba(255, 217, 102, 0) 60%);
    opacity: 0;
    transition: opacity 180ms ease;
    pointer-events: none;
}

.lever:hover {
    background: var(--golden);
    color: var(--ink);
}

.lever:hover::after {
    opacity: 1;
}

.lever:active {
    transform: translate(3px, 3px) scale(0.96);
    box-shadow: 0 0 0 var(--cinnamon);
}

.lever.pulled {
    background: var(--sage);
    color: var(--cream);
    border-color: var(--ink);
}

.paradox-result {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    color: var(--sage);
    text-transform: uppercase;
    min-height: 14px;
    transition: color 200ms ease;
    text-shadow: 1px 1px 0 rgba(122, 158, 153, 0.12);
}

.paradox-result.flash {
    color: var(--ink);
}

/* Page foot */
.page-foot {
    margin-top: 64px;
    text-align: center;
    color: var(--cinnamon);
    font-family: var(--mono);
}

.foot-line {
    font-size: 14px;
    letter-spacing: 0.32em;
    color: var(--espresso);
    margin-bottom: 14px;
}

.foot-sub {
    font-family: var(--serif-body);
    font-style: italic;
    color: var(--ink);
    font-size: 16px;
    margin-bottom: 12px;
}

.foot-meta {
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--cinnamon);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
    :root {
        --sidebar-w: 0px;
    }

    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        border-right: 0;
        border-bottom: 4px solid var(--cinnamon);
        padding: 10px;
    }

    .cabinet-frame {
        min-height: auto;
    }

    .content {
        margin-left: 0;
        padding: 36px 22px 60px;
    }

    .hero-title {
        font-size: clamp(48px, 14vw, 88px);
    }

    .paradox {
        padding: 24px 22px;
    }
}