@font-face {
    font-family: 'Inter';
    src: local('Inter');
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
}

:root {
    --brand: #f79c00;
    --brand-dark: #d68700;
    --brand-light: #ffb84d;
    --text: #1a1f2e;
    --text-muted: #64748b;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --bg-card: #ffffff;
    --line: #e2e8f0;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --bg: #000000;
    --bg-soft: #111111;
    --bg-card: #1a1a1a;
    --line: #2d2d2d;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.7);
}

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

html {
    scroll-behavior: smooth;
    transition: background-color 0.8s ease, color 0.8s ease;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text);
    background-color: var(--bg);
    background-image:
        radial-gradient(at 0% 0%, rgba(247, 156, 0, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(247, 156, 0, 0.05) 0px, transparent 50%);
    background-attachment: fixed;
    background-size: cover;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.8s ease, color 0.8s ease;
}

/* Apple-style smooth theme transition */
body.theme-transitioning {
    pointer-events: none;
}

a { 
    color: inherit; 
    transition: var(--transition-fast);
    text-decoration: none;
}

.container { width: min(1200px, 92%); margin: 0 auto; }
.narrow { width: min(800px, 92%); margin: 0 auto; }
.section { padding: 8rem 0; position: relative; }
.section-soft { background: var(--bg-soft); }

/* Header & Nav */
.site-header {
    position: relative;
    z-index: 100;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    transition: var(--transition);
}

[data-theme="dark"] .site-header {
    --header-bg: 0, 0, 0;
}

.nav-wrap { 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    min-height: 80px; 
}

.brand { 
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand img {
    height: 40px;
    width: auto;
    transition: var(--transition);
    filter: var(--logo-filter, none);
}

[data-theme="dark"] .brand img {
    filter: invert(1) brightness(2);
}

.brand:hover img {
    transform: scale(1.05);
}

.nav-list { 
    list-style: none; 
    display: flex; 
    gap: 2.5rem; 
    align-items: center;
}

.nav-list a { 
    font-weight: 500;
    color: var(--text-muted);
    font-size: 0.9rem;
    letter-spacing: -0.01em;
}

.nav-list a:hover {
    color: var(--brand);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: grid;
    place-items: center;
    position: relative;
    background: transparent;
    overflow: hidden;
}


.hero-content { 
    position: relative; 
    z-index: 1;
    text-align: center;
    max-width: 900px;
    transform: scale(1);
    transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero h1 {
    font-size: clamp(3rem, 10vw, 5.5rem);
    line-height: 1;
    font-weight: 800;
    margin-bottom: 2rem;
    letter-spacing: -0.04em;
    background: linear-gradient(180deg, var(--text) 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: -0.02em;
}

.eyebrow { 
    display: inline-block;
    color: var(--brand);
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 40px;
    padding: 1rem 2.2rem;
    border: 2px solid transparent;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 1rem;
    gap: 0.6rem;
}

.btn-primary { 
    background: var(--brand); 
    color: #fff;
}

.btn-primary:hover {
    background: var(--brand-light);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(247, 156, 0, 0.3);
}

.btn-outline { 
    background: transparent; 
    border-color: var(--line); 
    color: var(--text); 
}

.btn-outline:hover {
    border-color: var(--text);
    background: rgba(var(--text-rgb, 0,0,0), 0.05);
}

/* Cards & Grid */
.card, .ref-card {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 3rem;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-lg);
}

/* Events Section */
.events-section {
    background: transparent;
}

.events-section h2 {
    font-size: 3.5rem;
    letter-spacing: -0.03em;
}

/* Events Sticky Scroll Section */
.events-sticky-viewport {
    position: relative;
    background: transparent;
    padding: 5rem 0 7rem;
    margin-top: 0;
}

.events-explainer-section {
    width: 100%;
    margin-bottom: 0;
    padding: clamp(3.5rem, 7vw, 6rem) 0;
    background: rgba(255, 255, 255, 0.8);
    border-block: 1px solid rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.events-explainer-layout {
    display: grid;
    grid-template-columns: minmax(260px, 0.9fr) minmax(320px, 1.1fr);
    gap: clamp(1.5rem, 4vw, 3.5rem);
    align-items: center;
}

.events-explainer-media {
    margin: 0;
}

.events-explainer-placeholder {
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-lg);
    border: 2px dashed rgba(26, 31, 46, 0.25);
    background:
        linear-gradient(135deg, rgba(247, 156, 0, 0.15), rgba(247, 156, 0, 0.05)),
        repeating-linear-gradient(
            45deg,
            rgba(255, 255, 255, 0.35) 0 14px,
            rgba(255, 255, 255, 0.2) 14px 28px
        );
    display: grid;
    place-items: center;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.events-explainer-content h2 {
    font-size: clamp(1.8rem, 3.4vw, 2.8rem);
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 0.9rem;
}

.events-explainer-content p {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 75ch;
}

.events-explainer-content p + p {
    margin-top: 0.9rem;
}

.events-sticky-element {
    position: relative;
    height: auto;
    display: block;
    background: transparent;
    padding-top: 0;
}

.events-sticky-header {
    position: relative;
    text-align: center;
    z-index: 10;
    white-space: nowrap;
    margin: 0 auto 1.5rem;
    width: fit-content;
}

.events-sticky-header h2 {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    letter-spacing: -0.03em;
    color: var(--text);
    margin-top: 0.5rem;
}

.events-progress-bar {
    display: none;
}

.events-progress-fill {
    display: none;
}

.events-sticky-step {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(1rem, 3vw, 2rem);
    padding-top: 0;
    opacity: 1;
    transform: none;
    transition: none;
    z-index: 3;
}

.events-sticky-step + .events-sticky-step {
    margin-top: 1rem;
    padding-top: 1rem;
}

.events-sticky-card {
    width: 100%;
    max-width: 760px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.events-sticky-card-inner {
    display: flex;
    gap: 2.5rem;
    align-items: flex-start;
    background: var(--bg-card);
    border: 1.5px solid var(--line);
    border-radius: var(--radius-lg);
    padding: clamp(1.5rem, 4vw, 3rem);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
    transition: box-shadow 0.4s ease, border-color 0.4s ease;
}

.events-sticky-card-inner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--brand);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.events-sticky-card-inner {
    box-shadow: 0 8px 40px rgba(247, 156, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
    border-color: rgba(247, 156, 0, 0.3);
}

.events-sticky-date-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 72px;
    padding: 1rem 0.75rem;
    background: rgba(247, 156, 0, 0.1);
    border-radius: var(--radius);
    flex-shrink: 0;
}

.events-sticky-day {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--brand);
    line-height: 1;
    display: block;
}

.events-sticky-month {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--brand);
    display: block;
    margin-top: 0.2rem;
}

.events-sticky-year {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    display: block;
    margin-top: 0.15rem;
}

.events-sticky-body {
    flex: 1;
    min-width: 0;
}

.events-sticky-counter {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--brand);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    background: rgba(247, 156, 0, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
}

.events-sticky-title {
    font-size: clamp(1.4rem, 3vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.events-sticky-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.events-sticky-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.75rem;
}

.events-sticky-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
}

.events-sticky-meta-item svg {
    color: var(--brand);
    flex-shrink: 0;
}

.events-sticky-cta {
    align-self: flex-start;
}

.events-sticky-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.events-sticky-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--line);
    transition: background 0.3s ease, transform 0.3s ease;
    display: inline-block;
}

.events-sticky-dot.active {
    background: var(--brand);
    transform: scale(1.3);
}

/* Empty state */
.events-empty-state {
    text-align: center;
    padding: 4rem 2rem;
    max-width: 480px;
    margin: 0 auto;
}

.events-empty-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(247, 156, 0, 0.1);
    color: var(--brand);
    margin-bottom: 1.5rem;
}

.events-empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.events-empty-state .text-muted {
    font-size: 1rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .events-explainer-section {
        margin-bottom: 0;
    }

    .events-explainer-layout {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .events-explainer-placeholder {
        border-radius: var(--radius-md);
    }

    .events-sticky-card-inner {
        flex-direction: column;
        gap: 1.25rem;
    }

    .events-sticky-date-badge {
        flex-direction: row;
        gap: 0.5rem;
        min-width: unset;
        width: fit-content;
        padding: 0.5rem 0.75rem;
    }

    .events-sticky-day {
        font-size: 1.5rem;
    }

    .events-sticky-month,
    .events-sticky-year {
        font-size: 0.75rem;
        margin-top: 0;
    }

    .events-sticky-meta {
        gap: 0.75rem;
    }
}

.event-grid, .ref-grid, .feature-grid { 
    display: grid; 
    gap: 2.5rem; 
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); 
}

.event-featured {
    display: flex;
    gap: 2.5rem;
    align-items: flex-start;
    background: var(--bg-card);
    border: 2px solid var(--brand);
    border-radius: var(--radius-lg);
    padding: 3rem;
    position: relative;
    overflow: hidden;
    margin-bottom: 3rem;
    transition: var(--transition);
}

.event-featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--brand);
}

.event-featured:hover {
    box-shadow: 0 16px 50px rgba(247, 156, 0, 0.2);
    transform: translateY(-4px);
}

.event-featured-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 80px;
    padding: 1rem;
    background: rgba(247, 156, 0, 0.12);
    border-radius: var(--radius);
}

.event-featured-date .event-card-day {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--brand);
    line-height: 1;
}

.event-featured-date .event-card-month {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--brand);
}

.event-featured-body h3 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.event-featured-body .text-muted {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.event-grid-small {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.event-card-mini {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    transition: var(--transition);
    opacity: 0.6;
}

.event-card-mini:hover {
    opacity: 1;
    border-color: var(--brand);
    transform: translateY(-3px);
}

.event-mini-date {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--brand);
    letter-spacing: 0.02em;
    display: block;
    margin-bottom: 0.4rem;
}

.event-card-mini h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.event-card-mini .event-card-link {
    font-size: 0.85rem;
}

.event-card-mini.is-past {
    opacity: 0.4;
}

.event-card {
    background: var(--bg-card);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.event-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--brand);
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.event-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(247, 156, 0, 0.15);
    border-color: var(--brand);
}

.event-card-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    padding: 0.75rem;
    background: rgba(247, 156, 0, 0.1);
    border-radius: var(--radius);
}

.event-card-day {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--brand);
    line-height: 1;
}

.event-card-month {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--brand);
}

.event-card-body h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.event-card-body .text-muted {
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.event-card-link {
    font-weight: 600;
    color: var(--brand);
    transition: var(--transition-fast);
}

.event-card-link:hover {
    color: var(--brand-light);
}

.event-card.is-past {
    opacity: 0.6;
}

.status-pill {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(var(--text-rgb, 0,0,0), 0.08);
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .event-featured {
        flex-direction: column;
        gap: 1.5rem;
        padding: 2rem;
    }
    .event-grid-small {
        grid-template-columns: 1fr;
    }
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(50px) scale(0.98);
    transition: opacity 1.2s cubic-bezier(0.16, 1, 0.3, 1), transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Apple-style sticky sections */
.sticky-viewport {
    position: relative;
    height: 400vh; /* Increased for more steps */
}

.sticky-element {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.sticky-blur-layer {
    position: absolute;
    inset: 0;
    backdrop-filter: blur(15px);
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
    opacity: 0;
    transition: opacity 0.8s ease;
    pointer-events: none;
}

.sticky-viewport.scrolled .sticky-blur-layer {
    opacity: 1;
}

.sticky-step {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 2rem;
    z-index: 3;
}

.sticky-step.active {
    opacity: 1;
    transform: translateY(0);
}

.scroll-zoom {
    transform: scale(1);
    transition: transform 0.1s linear;
    will-change: transform;
}

.scroll-fade {
    opacity: 1;
    transition: opacity 0.1s linear;
    will-change: opacity;
}

.text-reveal-mask {
    background: linear-gradient(to right, var(--text) 50%, var(--text-muted) 50%);
    background-size: 200% 100%;
    background-position: 100% 0;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: background-position 0.1s linear;
}

/* Dark trigger sections */
.theme-dark-trigger {
    background: #000;
    color: #fff;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    color: var(--brand-light);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {transform: translateX(-50%) translateY(0);}
    40% {transform: translateX(-50%) translateY(-10px);}
    60% {transform: translateX(-50%) translateY(-5px);}
}

@media (max-width: 768px) {
    .section { padding: 5rem 0; }
    .hero h1 { font-size: 3.5rem; }
    .hero p { font-size: 1.2rem; }
}

/* Footer */
.site-footer {
    padding: 3rem 0;
    background: var(--bg-soft);
    border-top: 1px solid var(--line);
    color: var(--text-muted);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 2rem;
    align-items: center;
}

.footer-brand {
    font-weight: 700;
    color: var(--text);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    display: block;
}

.footer-links {
    display: flex;
    gap: 2rem;
    font-size: 0.9rem;
}

.footer-links a, 
.footer-links .link-button {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover, 
.footer-links .link-button:hover {
    color: var(--brand);
}

.link-button {
    background: none;
    border: none;
    padding: 0;
    font: inherit;
    cursor: pointer;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}