/* === RESET & BASE === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --deep-void: #0b0e1a;
    --midnight: #161b2e;
    --slate: #2a3150;
    --ash: #7b88a8;
    --parchment: #e8dcc8;
    --warm-cream: #fff4e0;
    --amber: #d4943a;
    --saddle: #8b4513;

    --font-display: 'Jost', sans-serif;
    --font-mono: 'Space Mono', monospace;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    background: var(--deep-void);
    color: var(--parchment);
}

body {
    font-family: var(--font-mono);
    font-weight: 400;
    line-height: 1.65;
    overflow-x: hidden;
    background: var(--deep-void);
}

/* === CANVAS BACKGROUND === */
#mosaic-bg {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    z-index: 0;
    pointer-events: none;
}

/* === SECTIONS === */
.section-full {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
}

.section-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 4rem);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--amber);
    margin-bottom: 3rem;
    text-align: center;
}

/* === THE ASSEMBLY === */
#assembly {
    position: relative;
    overflow: hidden;
    background: var(--deep-void);
}

#assembly-shapes {
    position: absolute;
    inset: 0;
    z-index: 0;
}

#assembly-shapes .geo-shape {
    position: absolute;
    opacity: 0;
    transition: opacity 1.2s ease, transform 1.2s cubic-bezier(0.23, 1, 0.32, 1);
}

#assembly-shapes .geo-shape.entered {
    opacity: 1;
    transform: translate(0, 0) !important;
}

#logomark {
    position: relative;
    z-index: 2;
    text-align: center;
    opacity: 0;
    transition: opacity 1.5s ease 1.8s;
}

#logomark.visible {
    opacity: 1;
}

#logo-svg {
    width: clamp(300px, 60vw, 800px);
    height: auto;
}

.tagline {
    font-family: var(--font-mono);
    font-size: clamp(0.75rem, 1.5vw, 1rem);
    color: var(--ash);
    letter-spacing: 0.25em;
    text-transform: lowercase;
    margin-top: 1.5rem;
    opacity: 0;
    transition: opacity 1s ease 2.8s;
}

#logomark.visible .tagline {
    opacity: 1;
}

/* === THE WORKBENCH === */
#workbench {
    background: linear-gradient(180deg, var(--deep-void) 0%, var(--midnight) 50%, var(--deep-void) 100%);
    padding: 6rem 2rem;
}

.tangram-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 1100px;
    width: 100%;
}

.tangram-block {
    background: rgba(42, 49, 80, 0.6);
    border: 1px solid rgba(123, 136, 168, 0.15);
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1), border-color 0.4s ease;
}

.tangram-block:hover {
    border-color: var(--amber);
    transform: translateY(-4px);
}

.tangram-block::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px;
    height: 100%;
    background: var(--amber);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.tangram-block:hover::before {
    opacity: 1;
}

.block-wide { grid-column: span 2; }
.block-tall { grid-row: span 2; display: flex; flex-direction: column; justify-content: center; }
.block-square { }
.block-medium { }

.block-label {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--amber);
    display: block;
    margin-bottom: 1rem;
}

.tangram-block p {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--parchment);
    opacity: 0.85;
}

/* === THE MANTELPIECE === */
#mantelpiece {
    background: var(--deep-void);
    position: relative;
}

.mantel-content {
    max-width: 800px;
    text-align: center;
}

.mantel-quote {
    font-family: var(--font-display);
    font-weight: 400;
    font-size: clamp(1.25rem, 3vw, 2.25rem);
    color: var(--warm-cream);
    line-height: 1.5;
    font-style: italic;
}

.ember-line {
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--amber), var(--saddle), transparent);
    margin: 3rem auto 0;
    transition: width 2s ease;
}

.ember-line.active {
    width: 200px;
}

/* === THE CABINET === */
#cabinet {
    background: linear-gradient(180deg, var(--deep-void) 0%, var(--midnight) 100%);
    padding: 6rem 2rem;
}

.cabinet-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    width: 100%;
}

.cabinet-drawer {
    background: rgba(22, 27, 46, 0.8);
    border: 1px solid rgba(123, 136, 168, 0.12);
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.4s ease;
}

.cabinet-drawer:hover {
    border-color: var(--amber);
}

.drawer-face {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.drawer-mosaic {
    width: 100%;
    height: 100%;
}

.drawer-num {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 2.5rem;
    color: var(--amber);
    opacity: 0.4;
}

.drawer-content {
    padding: 1.5rem 2rem 2rem;
}

.drawer-content h3 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--warm-cream);
    margin-bottom: 0.75rem;
    letter-spacing: 0.03em;
}

.drawer-content p {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--ash);
    line-height: 1.7;
}

/* === THE EXIT === */
#exit {
    background: var(--deep-void);
    position: relative;
    justify-content: space-between;
    padding-bottom: 2rem;
}

.exit-content {
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.exit-heading {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.5rem, 7vw, 6rem);
    color: var(--warm-cream);
    letter-spacing: 0.02em;
}

.exit-subtext {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--ash);
    margin-top: 1rem;
    letter-spacing: 0.1em;
}

.exit-link {
    display: inline-block;
    margin-top: 2rem;
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--amber);
    text-decoration: none;
    letter-spacing: 0.08em;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.exit-link:hover {
    border-bottom-color: var(--amber);
}

#exit-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.exit-content > * {
    position: relative;
    z-index: 1;
}

.site-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1100px;
    padding: 1rem 0;
    border-top: 1px solid rgba(123, 136, 168, 0.15);
}

.footer-mark {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: var(--ash);
}

.footer-copy {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: rgba(123, 136, 168, 0.5);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .tangram-grid {
        grid-template-columns: 1fr;
    }
    .block-wide { grid-column: span 1; }
    .cabinet-grid {
        grid-template-columns: 1fr;
    }
}