/* namu.style — Cool-gray palette with warm accent, shake-error animation */

:root {
    --silver-1: #d4d4dc;
    --silver-2: #c8c8d0;
    --silver-3: #b0b0bc;
    --silver-4: #a8a8b4;
    --silver-5: #8e8e9a;
    --purple-mist: #8a7fa8;
    --warm-accent: #c97b5a;
    --deep-bg: #2c2c36;
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
}

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

html {
    scroll-behavior: auto;
}

body {
    background-color: var(--deep-bg);
    color: var(--silver-2);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Sigil - fixed position brand mark */
#sigil {
    position: fixed;
    top: 24px;
    left: 24px;
    z-index: 100;
    opacity: 0.7;
    transition: opacity 0.3s;
}

#sigil:hover {
    opacity: 1;
}

#sigil .ring {
    fill: none;
    stroke: var(--silver-5);
    stroke-width: 1px;
    transition: stroke 0.4s;
}

#sigil .ring.filled {
    stroke: var(--warm-accent);
}

/* Chambers */
.chamber {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 4rem 2rem;
    overflow: hidden;
}

.chamber-content {
    max-width: 800px;
    width: 100%;
    position: relative;
    z-index: 2;
}

/* Typography */
.display-massive {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(4rem, 12vw, 10rem);
    letter-spacing: -0.03em;
    line-height: 0.9;
    color: var(--silver-1);
    margin-bottom: 1rem;
}

.display {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.5rem, 8vw, 7rem);
    letter-spacing: -0.03em;
    line-height: 1;
    color: var(--silver-1);
    margin-bottom: 1.5rem;
}

.display-heartwood {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(4rem, 12vw, 10rem);
    letter-spacing: -0.03em;
    line-height: 0.9;
    color: var(--silver-1);
    text-align: center;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--silver-4);
    margin-bottom: 2rem;
}

.body-text {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--silver-3);
    max-width: 540px;
    line-height: 1.7;
}

.mono {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--silver-5);
    letter-spacing: 0.02em;
}

.accent-text {
    color: var(--warm-accent);
    margin-top: 2rem;
    text-align: center;
}

.contact-line {
    margin-top: 2rem;
    color: var(--warm-accent);
}

/* Shake-error animation — the sole motion vocabulary */
@keyframes shake-error {
    0% { transform: translate(0, 0) rotate(0deg); opacity: 0; }
    10% { transform: translate(-2px, 1px) rotate(-0.5deg); opacity: 0.3; }
    20% { transform: translate(3px, -1px) rotate(0.5deg); opacity: 0.5; }
    30% { transform: translate(-1px, 2px) rotate(-0.3deg); opacity: 0.7; }
    40% { transform: translate(2px, -2px) rotate(0.4deg); opacity: 0.8; }
    50% { transform: translate(-3px, 1px) rotate(-0.5deg); opacity: 0.85; }
    60% { transform: translate(1px, -1px) rotate(0.3deg); opacity: 0.9; }
    70% { transform: translate(-2px, 2px) rotate(-0.2deg); opacity: 0.93; }
    80% { transform: translate(2px, 0px) rotate(0.2deg); opacity: 0.96; }
    90% { transform: translate(-1px, 1px) rotate(-0.1deg); opacity: 0.98; }
    100% { transform: translate(0, 0) rotate(0deg); opacity: 1; }
}

.shake-target {
    opacity: 0;
}

.shake-target.visible {
    animation: shake-error 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

/* Voronoi grid in Chamber 1 */
.voronoi-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.06;
}

.voronoi-grid svg {
    width: 100%;
    height: 100%;
}

.voronoi-cell {
    fill: none;
    stroke: var(--silver-5);
    stroke-width: 0.5;
}

/* Dendro lines in Chamber 2 */
.dendro-lines {
    margin-top: 3rem;
    width: 100%;
    height: 200px;
    opacity: 0.15;
}

.dendro-lines svg {
    width: 100%;
    height: 100%;
}

.dendro-line {
    stroke: var(--silver-4);
    stroke-width: 1;
    stroke-dasharray: 4 8;
}

/* Radial burst in Chamber 3 */
.radial-burst {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80vmin;
    height: 80vmin;
    z-index: 1;
    opacity: 0.08;
}

.radial-burst svg {
    width: 100%;
    height: 100%;
}

.burst-ring {
    fill: none;
    stroke: var(--purple-mist);
    stroke-width: 0.5;
}

/* Grid pattern in Chamber 4 */
.grid-pattern {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    margin-top: 3rem;
    max-width: 300px;
}

.grid-cell {
    aspect-ratio: 1;
    border: 1px solid var(--silver-5);
    opacity: 0.3;
    transition: opacity 0.4s, border-color 0.4s;
}

.grid-cell:hover {
    opacity: 0.8;
    border-color: var(--warm-accent);
}

/* End sigil in Chamber 5 */
.end-sigil {
    margin-top: 3rem;
}

.end-ring {
    fill: none;
    stroke: var(--silver-5);
    stroke-width: 1;
}

.end-ring.filled {
    fill: var(--warm-accent);
    stroke: var(--warm-accent);
}

/* Chamber-specific backgrounds */
#chamber-canopy {
    background: radial-gradient(ellipse at 50% 80%, #33333d 0%, var(--deep-bg) 70%);
}

#chamber-heartwood {
    background: radial-gradient(ellipse at 50% 50%, #35303f 0%, var(--deep-bg) 60%);
}

#chamber-heartwood .chamber-content {
    text-align: center;
}

#chamber-bark {
    border-top: 1px solid rgba(142, 142, 154, 0.1);
}

/* Responsive */
@media (max-width: 600px) {
    .chamber {
        padding: 3rem 1.5rem;
    }

    #sigil {
        top: 16px;
        left: 16px;
    }

    #sigil svg {
        width: 40px;
        height: 40px;
    }
}