/* ethica.dev - Y2K-era moral philosophy interface */
/* Colors: #f4efe4, #2d8a72, #1c1917, #78716c, #dc4a3f, #faf8f3, #292524, #d1d5db */
/* Fonts: Space Grotesk (display), Libre Baskerville (body) */

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

:root {
    --parchment: #f4efe4;
    --teal: #2d8a72;
    --ink: #1c1917;
    --warm-gray: #78716c;
    --error-red: #dc4a3f;
    --tile-surface: #faf8f3;
    --dark: #292524;
    --light-gray: #d1d5db;
    --font-display: "Space Grotesk", sans-serif;
    --font-body: "Libre Baskerville", Georgia, serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--parchment);
    color: var(--ink);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
}

/* Paper-aged texture overlay via CSS pattern */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.15;
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(139, 119, 90, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 119, 90, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 40% 80%, rgba(160, 140, 110, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 70% 60%, rgba(120, 100, 70, 0.06) 0%, transparent 25%);
    background-size: 400px 400px;
}

/* ====== TOPBAR ====== */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(244, 239, 228, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--light-gray);
    padding: 0 2rem;
}

.topbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.topbar-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    letter-spacing: -0.01em;
}

.topbar-dot {
    color: var(--teal);
}

.topbar-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.topbar-links a {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--warm-gray);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: color 0.2s ease;
}

.topbar-links a:hover {
    color: var(--teal);
}

/* Chrome button - Y2K style */
.chrome-btn {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--tile-surface);
    background: linear-gradient(135deg, var(--teal) 0%, #1f6b58 50%, var(--teal) 100%);
    border: 1px solid rgba(45, 138, 114, 0.4);
    border-radius: 20px;
    padding: 8px 20px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(45, 138, 114, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.chrome-btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: left 0.5s ease;
}

.chrome-btn:hover {
    box-shadow: 0 4px 16px rgba(45, 138, 114, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.chrome-btn:hover::before {
    left: 100%;
}

/* ====== HERO ====== */
.hero {
    position: relative;
    z-index: 1;
    padding: 160px 2rem 80px;
    text-align: center;
}

.hero-inner {
    max-width: 800px;
    margin: 0 auto;
}

.chrome-title {
    font-family: var(--font-display);
    font-size: clamp(48px, 8vw, 72px);
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1.12;
    color: var(--dark);
    background: linear-gradient(135deg, var(--dark) 0%, var(--warm-gray) 40%, var(--dark) 60%, #a8a29e 80%, var(--dark) 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: chromeShimmer 6s ease-in-out infinite;
}

@keyframes chromeShimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-family: var(--font-body);
    font-style: italic;
    font-size: 1.15rem;
    color: var(--warm-gray);
    margin-top: 0.75rem;
    letter-spacing: 0.02em;
}

.hero-divider {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--teal), transparent);
    margin: 2rem auto;
}

.hero-tagline {
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--warm-gray);
    line-height: 1.8;
    max-width: 560px;
    margin: 0 auto;
}

/* ====== ETHICA GRID ====== */
.ethica-grid {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 2rem 4rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(220px, auto);
    gap: 1.5rem;
}

/* ====== TILES ====== */
.tile {
    background: var(--tile-surface);
    border: 1px solid var(--light-gray);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    opacity: 0;
    transform: translateY(12px);
}

.tile::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    opacity: 0.08;
    background-image:
        radial-gradient(ellipse at 30% 40%, rgba(139, 119, 90, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 70%, rgba(139, 119, 90, 0.1) 0%, transparent 40%);
    background-size: 200px 200px;
}

.tile:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(28, 25, 23, 0.08), 0 2px 8px rgba(28, 25, 23, 0.04);
}

.tile--span2 {
    grid-column: span 2;
}

.tile-number {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--teal);
    margin-bottom: 0.75rem;
}

.tile-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1.2;
    color: var(--dark);
    margin-bottom: 1rem;
}

.tile-body {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--warm-gray);
    line-height: 1.75;
    flex: 1;
}

.tile-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(209, 213, 219, 0.5);
}

.tile-tag {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--warm-gray);
    background: rgba(45, 138, 114, 0.06);
    border: 1px solid rgba(45, 138, 114, 0.15);
    border-radius: 12px;
    padding: 3px 10px;
}

.tile-status {
    font-family: var(--font-display);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--error-red);
    margin-left: auto;
}

/* Shake animation - the sole animation pattern */
@keyframes shakeEntry {
    0% { opacity: 0; transform: translateX(-4px); }
    10% { transform: translateX(3px); }
    20% { transform: translateX(-2px); }
    30% { transform: translateX(1px); }
    40% { transform: translateX(-1px); }
    50% { opacity: 1; transform: translateX(0); }
    100% { opacity: 1; transform: translateX(0); }
}

.tile--visible {
    animation: shakeEntry 0.8s cubic-bezier(0.36, 0.07, 0.19, 0.97) forwards;
}

/* ====== METHOD SECTION ====== */
.method-section {
    position: relative;
    z-index: 1;
    background: var(--dark);
    padding: 6rem 2rem;
    margin-top: 2rem;
}

.method-inner {
    max-width: 800px;
    margin: 0 auto;
}

.method-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1.12;
    color: var(--tile-surface);
    margin-bottom: 2rem;
}

.method-text {
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--light-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.method-principles {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.method-principle {
    display: flex;
    align-items: baseline;
    gap: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(209, 213, 219, 0.15);
}

.method-number {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--teal);
    letter-spacing: 0.08em;
    flex-shrink: 0;
}

.method-label {
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-style: italic;
    color: var(--tile-surface);
    line-height: 1.6;
}

/* ====== COLOPHON / FOOTER ====== */
.colophon {
    position: relative;
    z-index: 1;
    background: var(--ink);
    padding: 3rem 2rem;
    border-top: 1px solid rgba(209, 213, 219, 0.1);
}

.colophon-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.colophon-left {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.colophon-logo {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--tile-surface);
    letter-spacing: -0.01em;
}

.colophon-dot {
    color: var(--teal);
}

.colophon-desc {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--warm-gray);
    line-height: 1.7;
}

.colophon-right {
    text-align: right;
}

.colophon-note {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--warm-gray);
    letter-spacing: 0.04em;
    margin-bottom: 0.5rem;
}

.colophon-year {
    font-family: var(--font-display);
    font-size: 0.7rem;
    color: rgba(120, 113, 108, 0.6);
    letter-spacing: 0.06em;
}

/* ====== RESPONSIVE ====== */
@media (max-width: 900px) {
    .ethica-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .tile--span2 {
        grid-column: span 2;
    }
}

@media (max-width: 640px) {
    .ethica-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    .tile--span2 {
        grid-column: span 1;
    }
    .topbar-links {
        display: none;
    }
    .topbar-cta {
        display: none;
    }
    .hero {
        padding: 120px 1.5rem 60px;
    }
    .colophon-inner {
        flex-direction: column;
        gap: 2rem;
    }
    .colophon-right {
        text-align: left;
    }
    .method-section {
        padding: 4rem 1.5rem;
    }
}

/* ====== CHROME AURA EFFECTS ====== */
.tile::after {
    content: "";
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(45, 138, 114, 0.08), transparent 40%, transparent 60%, rgba(45, 138, 114, 0.04));
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

/* Y2K translucent panel effect on tiles */
.tile--span2 {
    background: linear-gradient(145deg, var(--tile-surface) 0%, rgba(250, 248, 243, 0.95) 50%, var(--tile-surface) 100%);
    box-shadow: 0 1px 3px rgba(28, 25, 23, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

/* Selection color */
::selection {
    background: rgba(45, 138, 114, 0.15);
    color: var(--ink);
}