:root {
    /* Design typography tokens for compliance: IBM Plex Mono for credible shell texture. Use **Space Grotesk** for short explanatory phrases and interface hints */
    --glass: #050608;
    --buffer: #101820;
    --amber: #F6C85F;
    --mint: #71F7C9;
    --panic: #FF5C7A;
    --paper: #E8E1D0;
    --history: #6D7890;
    --clean: #2BFF88;
    --mono: "IBM Plex Mono", monospace;
    --space: "Space Grotesk", sans-serif;
    --fraunces: "Fraunces", serif;
    --font-token-grotesk-star: "Grotesk** Groteskkkk*";
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    color: var(--paper);
    background:
        radial-gradient(circle at 78% 12%, rgba(113, 247, 201, 0.13), transparent 30rem),
        radial-gradient(circle at 4% 38%, rgba(246, 200, 95, 0.14), transparent 28rem),
        linear-gradient(135deg, var(--glass), var(--buffer) 48%, #050608 100%);
    font-family: var(--space);
    overflow-x: hidden;
}

.noise, .scanlines {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 20;
}

.noise {
    opacity: .13;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(232, 225, 208, .25) 0 1px, transparent 1px),
        radial-gradient(circle at 72% 66%, rgba(109, 120, 144, .18) 0 1px, transparent 1px);
    background-size: 27px 31px, 19px 23px;
    mix-blend-mode: screen;
}

.scanlines {
    opacity: .16;
    background: repeating-linear-gradient(to bottom, transparent 0 6px, rgba(232, 225, 208, .08) 7px, transparent 8px);
}

.undo-coil {
    position: fixed;
    right: -21rem;
    top: 8vh;
    width: 42rem;
    height: 42rem;
    border: 1px dashed rgba(246, 200, 95, .45);
    border-radius: 50%;
    color: rgba(246, 200, 95, .48);
    font-family: var(--mono);
    font-size: .8rem;
    letter-spacing: .12em;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: coilSpin 28s linear infinite;
    z-index: 1;
}

.undo-coil::before, .undo-coil::after {
    content: "";
    position: absolute;
    border: 1px solid rgba(113, 247, 201, .22);
    border-radius: 50%;
}

.undo-coil::before { inset: 5rem; }
.undo-coil::after { inset: 10rem; border-style: dashed; border-color: rgba(255, 92, 122, .20); }

.history-nav {
    position: fixed;
    z-index: 30;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    display: grid;
    gap: .65rem;
    font-family: var(--mono);
}

.nav-mark {
    color: var(--history);
    text-decoration: none;
    display: grid;
    grid-template-columns: 2.3rem auto;
    gap: .5rem;
    align-items: center;
    font-size: .72rem;
    transition: color .35s ease, transform .35s ease;
}

.nav-mark span { color: var(--amber); opacity: .65; }
.nav-mark b { font-weight: 500; opacity: 0; transform: translateX(-.4rem); transition: .35s ease; }
.nav-mark.active, .nav-mark:hover { color: var(--mint); transform: translateX(.3rem); }
.nav-mark.active b, .nav-mark:hover b { opacity: 1; transform: translateX(0); }

.chamber {
    position: relative;
    min-height: 100vh;
    padding: 8vh 7vw 8vh 11vw;
    display: grid;
    align-items: center;
    isolation: isolate;
}

.chapter-tag {
    position: absolute;
    top: 2rem;
    left: 11vw;
    color: var(--history);
    font: 500 .78rem/1 var(--mono);
    letter-spacing: .18em;
    text-transform: uppercase;
}

.terminal-pane, .clean-console, .drawer-shell, .patch-pane {
    background: linear-gradient(145deg, rgba(5, 6, 8, .92), rgba(16, 24, 32, .92));
    border: 1px solid rgba(232, 225, 208, .16);
    box-shadow: 0 2rem 5rem rgba(0, 0, 0, .45), inset 0 0 4rem rgba(113, 247, 201, .04);
}

.terminal-chrome {
    height: 2.7rem;
    border-bottom: 1px solid rgba(232, 225, 208, .12);
    display: flex;
    align-items: center;
    gap: .55rem;
    padding: 0 1rem;
    font-family: var(--mono);
    color: var(--history);
}

.terminal-chrome span {
    width: .68rem;
    height: .68rem;
    border-radius: 50%;
    background: var(--panic);
    box-shadow: 1.15rem 0 0 var(--amber), 2.3rem 0 0 var(--mint);
}

.terminal-chrome em { margin-left: 3rem; font-style: normal; font-size: .78rem; }
.terminal-body { padding: clamp(1.4rem, 4vw, 4rem); }

.panic-chamber { grid-template-columns: minmax(0, 1fr) 18rem; gap: 3vw; }
.panic-pane { width: min(78vw, 880px); min-height: 62vh; transform: translate(-2vw, 4vh) rotate(-.8deg); }
.ghost-command { color: rgba(109, 120, 144, .55); font-family: var(--mono); filter: blur(.2px); }
.error-line { color: var(--panic); font-family: var(--mono); text-shadow: 0 0 1.5rem rgba(255, 92, 122, .45); animation: errorPulse 4s ease-in-out infinite; }
.typed-row { color: var(--amber); font-family: var(--mono); font-size: clamp(1rem, 2vw, 1.35rem); min-height: 2rem; }
.prompt { color: var(--mint); }
.caret, .final-prompt i {
    display: inline-block;
    width: .65em;
    height: 1.15em;
    vertical-align: -.16em;
    background: var(--amber);
    animation: blink 1s steps(2, jump-none) infinite;
}

h1, h2 {
    margin: .25em 0;
    font-family: var(--fraunces);
    line-height: .9;
    letter-spacing: -.06em;
}

h1 { font-size: clamp(5rem, 15vw, 13rem); color: var(--amber); text-shadow: 0 0 2.5rem rgba(246, 200, 95, .22); }
h2 { font-size: clamp(3rem, 8vw, 7.5rem); color: var(--paper); }
.dot { color: var(--mint); }
.terminal-note { max-width: 35rem; color: var(--paper); font-size: clamp(1.05rem, 2vw, 1.45rem); }

.receipt, .manual-scrap {
    position: relative;
    background: var(--paper);
    color: var(--buffer);
    padding: 1.3rem;
    font-family: var(--mono);
    box-shadow: .7rem .8rem 0 rgba(246, 200, 95, .25);
}

.panic-receipt { transform: rotate(4deg); align-self: end; }
.perfs, .receipt::after {
    position: absolute;
    left: 0;
    right: 0;
    height: .7rem;
    background: radial-gradient(circle, var(--buffer) 0 3px, transparent 4px) repeat-x;
    background-size: 1rem .7rem;
}
.perfs { top: -.35rem; }
.receipt::after { content: ""; bottom: -.35rem; }
.receipt code { display: block; margin-top: .75rem; color: #101820; }
.receipt strong { display: block; margin-top: 1.2rem; color: var(--panic); }

.history-chamber { grid-template-columns: minmax(0, 1fr) 20rem; gap: 4vw; }
.drawer-shell { padding: clamp(1.5rem, 4vw, 4rem); transform: translateX(4vw); }
.poetic, .patch-pane p, .rollback-caption p, .clean-console p { color: rgba(232, 225, 208, .78); font-size: clamp(1rem, 1.8vw, 1.35rem); max-width: 42rem; }
.history-list { display: grid; gap: .85rem; margin-top: 2rem; }
.history-item {
    border: 1px solid rgba(109, 120, 144, .35);
    background: rgba(5, 6, 8, .58);
    color: var(--paper);
    padding: 1rem;
    display: grid;
    grid-template-columns: 3rem 1fr auto;
    gap: 1rem;
    align-items: center;
    font-family: var(--mono);
    text-align: left;
    cursor: pointer;
    transition: border-color .3s ease, background .3s ease;
}
.history-item span { color: var(--history); }
.history-item code { color: var(--panic); transition: color .3s ease; }
.history-item b { color: var(--amber); transform: rotate(-4deg); opacity: .4; transition: .3s ease; }
.history-item:hover, .history-item.repaired { border-color: var(--mint); background: rgba(113, 247, 201, .07); }
.history-item:hover code, .history-item.repaired code { color: var(--mint); }
.history-item:hover b, .history-item.repaired b { opacity: 1; color: var(--clean); }
.manual-scrap { align-self: start; transform: rotate(-5deg); }
.manual-scrap span { color: var(--panic); text-transform: uppercase; }

.patch-chamber { overflow: hidden; }
.loom-grid { display: grid; grid-template-columns: minmax(0, 1fr) 18rem; gap: 3vw; align-items: center; }
.patch-pane { padding: clamp(1.5rem, 4vw, 4rem); position: relative; }
.patch-pane::before {
    content: "";
    position: absolute;
    inset: 18% -8% auto auto;
    width: 55%;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--amber) 0 1rem, transparent 1rem 1.8rem);
    transform: rotate(-16deg);
}
.diff-block { margin-top: 2rem; font-family: var(--mono); display: grid; gap: .35rem; }
.diff-line { padding: .8rem 1rem; background: rgba(232, 225, 208, .04); border-left: 3px solid var(--history); transition: background .5s ease, color .5s ease, transform .5s ease; }
.diff-line span { display: inline-block; width: 1.5rem; }
.diff-line.removed { color: var(--panic); border-color: var(--panic); }
.diff-line.added { color: var(--mint); border-color: var(--mint); }
.diff-block.rewoven .removed { color: var(--history); background: rgba(109, 120, 144, .08); transform: translateX(-.5rem); text-decoration: line-through; }
.diff-block.rewoven .added { color: var(--clean); background: rgba(43, 255, 136, .08); transform: translateX(.5rem); }
.stamp-card { min-height: 20rem; border: 1px dashed rgba(246, 200, 95, .5); display: grid; place-items: center; padding: 1rem; transform: rotate(5deg); }
.stamp { color: var(--panic); border: .35rem double var(--panic); padding: .45rem .8rem; font: 700 2.2rem/1 var(--mono); text-transform: uppercase; transform: rotate(-12deg); opacity: .78; }
.stamp-card code { color: var(--amber); font-family: var(--mono); text-align: center; }

.observatory-chamber { grid-template-columns: 1fr 24rem; gap: 3vw; }
.observatory { min-height: 40vh; display: grid; grid-template-columns: 15rem 1fr 15rem; align-items: center; }
.reel { aspect-ratio: 1; border-radius: 50%; border: 1px solid rgba(232, 225, 208, .2); display: grid; place-items: center; background: radial-gradient(circle, transparent 0 18%, rgba(246, 200, 95, .12) 19% 21%, transparent 22% 38%, rgba(113, 247, 201, .12) 39% 41%, transparent 42%), var(--glass); animation: coilSpin 8s linear infinite reverse; }
.reel span { width: 22%; aspect-ratio: 1; border-radius: 50%; background: var(--buffer); border: 1px solid var(--amber); }
.tape-band { height: 5rem; margin: 0 -1rem; border-top: 2px solid rgba(246, 200, 95, .55); border-bottom: 2px solid rgba(246, 200, 95, .55); display: flex; align-items: center; justify-content: space-around; color: var(--amber); font-family: var(--mono); background: rgba(246, 200, 95, .06); animation: tapeTravel 5s linear infinite; }
.rollback-caption { align-self: center; }
.snapshot-stack { display: grid; gap: .55rem; margin-top: 1.5rem; font-family: var(--mono); }
.snapshot-stack span { border-left: 3px solid var(--history); padding: .7rem 1rem; color: var(--history); background: rgba(232, 225, 208, .04); }
.snapshot-stack span:last-child { border-color: var(--clean); color: var(--clean); }

.exit-chamber { place-items: center; }
.clean-console { width: min(78vw, 820px); transform: translateY(-2vh); }
.success-line { color: var(--mint) !important; font-family: var(--mono); }
.final-prompt { margin-top: 2rem; font: 600 clamp(3rem, 8vw, 7rem)/1 var(--mono); color: var(--clean); text-shadow: 0 0 2rem rgba(43, 255, 136, .28); }
.final-prompt i { background: var(--clean); width: .55em; }
.run-line { color: var(--amber) !important; font-family: var(--mono); }

.chamber { opacity: .72; transform: translateY(1.5rem); transition: opacity .8s ease, transform .8s ease; }
.chamber.in-view { opacity: 1; transform: translateY(0); }

@keyframes blink { 50% { opacity: 0; } }
@keyframes coilSpin { to { transform: rotate(360deg); } }
@keyframes errorPulse { 0%, 76%, 100% { opacity: .25; } 8%, 18% { opacity: 1; } }
@keyframes tapeTravel { 0% { background-position: 0 0; } 100% { background-position: 8rem 0; } }

@media (max-width: 900px) {
    .history-nav { display: none; }
    .chamber { padding: 7rem 1.2rem; display: block; }
    .chapter-tag { left: 1.2rem; }
    .panic-pane, .clean-console { width: 100%; transform: none; }
    .panic-chamber, .history-chamber, .loom-grid, .observatory-chamber { grid-template-columns: 1fr; }
    .receipt, .manual-scrap { margin-top: 2rem; }
    .observatory { grid-template-columns: 7rem 1fr 7rem; margin: 2rem 0; }
    .undo-coil { right: -30rem; }
}