:root {
    --obsidian-slate: #1C1E24;
    --gunmetal-chrome: #2A2E38;
    --graphite: #4A4E58;
    --pewter-mist: #8890A0;
    --frosted-chrome: #C8CED8;
    --institutional-frost: #F0F2F5;
    --lichen-gray: #E2E6E0;
    --forest-floor: #D4DDD0;
    --canopy-gold: #A89860;
    --living-green: #6B7D5A;
    --accent-warm: #2E3028;
    --chrome-border: #B8C0CC;
    --frost-bright: #FAFBFC;

    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Source Sans 3', sans-serif;

    --transition-easing: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html, body {
    width: 100%;
    height: 100%;
}

body {
    font-family: var(--font-body);
    background-color: var(--institutional-frost);
    color: var(--graphite);
    line-height: 1.7;
    font-weight: 400;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background-color: var(--institutional-frost);
}

::-webkit-scrollbar-thumb {
    background-color: var(--frosted-chrome);
    border-radius: 4px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(28, 30, 36, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gunmetal-chrome);
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 0 2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.header.visible {
    opacity: 1;
}

.header-content {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--frosted-chrome);
    letter-spacing: -0.01em;
}

.header-nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.header-nav a {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--frosted-chrome);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    transition: color 0.3s ease;
}

.header-nav a:hover {
    color: var(--canopy-gold);
}

/* Hero Section */
.hero {
    height: 100vh;
    background-color: var(--obsidian-slate);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-line {
    width: 60vw;
    max-width: 600px;
    height: 1px;
    background-color: var(--frosted-chrome);
    transform: scaleX(0);
    transform-origin: center;
    animation: drawLine 600ms var(--transition-easing) 300ms forwards;
}

@keyframes drawLine {
    to {
        transform: scaleX(1);
    }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 5.5vw, 4.8rem);
    font-weight: 600;
    color: var(--frosted-chrome);
    letter-spacing: -0.01em;
    line-height: 1.15;
    opacity: 0;
    transform: translateY(12px);
    animation: fadeInUp 700ms var(--transition-easing) 900ms forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 300;
    color: var(--pewter-mist);
    max-width: 500px;
    opacity: 0;
    animation: fadeIn 500ms var(--transition-easing) 2200ms forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* Hero animation complete - transition to main content */
.hero.animate-away {
    animation: heroAway 800ms var(--transition-easing) forwards;
}

@keyframes heroAway {
    from {
        background-color: var(--obsidian-slate);
        transform: translateY(0);
    }
    to {
        background-color: var(--institutional-frost);
        transform: translateY(-40vh);
    }
}

.hero-line.animate-away,
.hero-title.animate-away,
.hero-subtitle.animate-away {
    animation: fadeOut 500ms var(--transition-easing) forwards;
}

@keyframes fadeOut {
    to {
        opacity: 0;
    }
}

/* Main content */
main {
    margin-top: 0;
    background-color: var(--institutional-frost);
    position: relative;
}

/* Divider Zones */
.divider-zone {
    padding: 3rem 2rem;
    display: flex;
    justify-content: center;
}

.section-divider {
    width: 60%;
    max-width: 600px;
    height: 2px;
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
    padding: 2rem;
    max-width: 1600px;
    margin: 0 auto;
    opacity: 0;
    animation: fadeIn 600ms var(--transition-easing) 3400ms forwards;
}

.license-card {
    background-color: var(--institutional-frost);
    border: 1px solid var(--chrome-border);
    border-radius: 4px;
    padding: 1.5rem;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08), 0 1px 3px rgba(0, 0, 0, 0.12);
    transition: all 400ms var(--transition-easing);
    cursor: pointer;
    position: relative;
    opacity: 0;
    transform: translateY(16px);
}

.content-grid.loaded .license-card {
    opacity: 1;
    transform: translateY(0);
}

.license-card:nth-child(1) {
    animation-delay: 0ms;
}
.license-card:nth-child(2) {
    animation-delay: 80ms;
}
.license-card:nth-child(3) {
    animation-delay: 160ms;
}
.license-card:nth-child(4) {
    animation-delay: 240ms;
}
.license-card:nth-child(5) {
    animation-delay: 320ms;
}
.license-card:nth-child(6) {
    animation-delay: 400ms;
}
.license-card:nth-child(7) {
    animation-delay: 480ms;
}
.license-card:nth-child(8) {
    animation-delay: 560ms;
}
.license-card:nth-child(9) {
    animation-delay: 640ms;
}
.license-card:nth-child(10) {
    animation-delay: 720ms;
}
.license-card:nth-child(11) {
    animation-delay: 800ms;
}
.license-card:nth-child(12) {
    animation-delay: 880ms;
}

@keyframes cardFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.license-card:hover {
    background-color: var(--frost-bright);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08), 0 1px 4px rgba(0, 0, 0, 0.06);
}

.license-card:hover .card-title {
    color: var(--accent-warm);
}

.license-card:active {
    transform: scale(0.995);
    transition: transform 120ms ease-out;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    gap: 1rem;
}

.card-title {
    font-family: var(--font-display);
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 600;
    color: var(--obsidian-slate);
    letter-spacing: 0.02em;
    line-height: 1.4;
    transition: color 400ms var(--transition-easing);
    flex: 1;
}

.card-label {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--pewter-mist);
    white-space: nowrap;
    padding: 0.25rem 0.75rem;
    background-color: rgba(136, 144, 160, 0.1);
    border-radius: 2px;
}

.card-description {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--graphite);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.card-meta {
    display: flex;
    gap: 1rem;
    font-family: var(--font-body);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--pewter-mist);
}

.meta-item {
    border-left: 1px solid var(--frosted-chrome);
    padding-left: 1rem;
}

.meta-item:first-child {
    border-left: none;
    padding-left: 0;
}

/* Footer Zone */
.footer-zone {
    background: linear-gradient(180deg, var(--institutional-frost) 0%, var(--lichen-gray) 30%, var(--forest-floor) 100%);
    padding: 4rem 2rem;
    text-align: center;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-content h3 {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 600;
    color: var(--obsidian-slate);
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.footer-content p {
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--graphite);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.footer-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    font-family: var(--font-body);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--pewter-mist);
}

.footer-info span {
    border-left: 1px solid var(--pewter-mist);
    padding-left: 1rem;
}

.footer-info span:first-child {
    border-left: none;
    padding-left: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .header-nav {
        gap: 1rem;
    }

    .header-nav a {
        font-size: 0.65rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .divider-zone {
        padding: 2rem 1rem;
    }

    .section-divider {
        width: 100%;
    }
}