@font-face {
    font-family: 'W95FA';
    src: url('fonts/W95FA.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

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

:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --card-bg: #fafafa;
    --brand-orange: #FF6200;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 40px rgba(0, 0, 0, 0.12);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
}

/* Loading Screen */
#grid-loading {
    position: fixed;
    inset: 0;
    background: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

#grid-loading.fade-out {
    opacity: 0;
    pointer-events: none;
}

#grid-loading .loading-logo {
    width: 180px;
    height: auto;
}

/* Page transitions */
.page-enter {
    animation: pageEnter 0.35s ease-out;
}

.page-transition-out {
    opacity: 0;
    transform: scale(0.98);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

@keyframes pageEnter {
    from { opacity: 0; transform: scale(0.98); }
    to { opacity: 1; transform: scale(1); }
}

/* Header */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 30px;
    width: auto;
}

.header-nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--brand-orange);
}

/* Filter Bar */
#filter-bar {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 99;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.filter-btn {
    padding: 6px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 11px;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.filter-btn:hover {
    border-color: var(--brand-orange);
    color: var(--brand-orange);
}

.filter-btn.active {
    background: var(--brand-orange);
    border-color: var(--brand-orange);
    color: #fff;
}

/* Main Grid */
#project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    padding: 140px 40px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Project Card */
.project-card {
    position: relative;
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    aspect-ratio: 4/3;
    text-decoration: none;
    display: block;
    animation: fadeInUp 0.5s ease forwards;
    opacity: 0;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.project-card .card-media {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .card-media {
    transform: scale(1.05);
}

/* Card overlay — hidden by default, shown on hover */
.project-card .card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px 20px 18px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.75) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.project-card:hover .card-overlay {
    opacity: 1;
}

.project-card .card-category {
    color: var(--brand-orange);
    font-size: 9px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 600;
}

.project-card .card-title {
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.project-card .card-title.effects-lab-font {
    font-family: 'W95FA', sans-serif;
    font-size: 18px;
    letter-spacing: 0;
    text-transform: none;
}

/* Video cards */
.project-card video.card-media {
    pointer-events: none;
}

/* Card enter animation */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Staggered animation delays */
.project-card:nth-child(1) { animation-delay: 0.05s; }
.project-card:nth-child(2) { animation-delay: 0.1s; }
.project-card:nth-child(3) { animation-delay: 0.15s; }
.project-card:nth-child(4) { animation-delay: 0.2s; }
.project-card:nth-child(5) { animation-delay: 0.25s; }
.project-card:nth-child(6) { animation-delay: 0.3s; }
.project-card:nth-child(7) { animation-delay: 0.35s; }
.project-card:nth-child(8) { animation-delay: 0.4s; }
.project-card:nth-child(9) { animation-delay: 0.45s; }
.project-card:nth-child(10) { animation-delay: 0.5s; }

/* ─── Tablet ─── */
@media (max-width: 768px) {
    #header {
        padding: 15px 20px;
    }

    .logo img {
        height: 24px;
    }

    #filter-bar {
        top: 56px;
        gap: 6px;
        padding: 10px 12px;
    }

    .filter-btn {
        padding: 5px 12px;
        font-size: 10px;
    }

    #project-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 16px;
        padding: 120px 16px 30px;
    }

    /* On touch devices, always show overlay (no hover) */
    .project-card .card-overlay {
        opacity: 1;
    }
}

/* ─── Mobile ─── */
@media (max-width: 480px) {
    #project-grid {
        grid-template-columns: 1fr;
    }

    .project-card {
        aspect-ratio: 16/10;
    }
}