:root {
    --g-accent: #7B61FF;
    --g-accent-light: #9B87FF;
    --g-bg: #0D0D0F;
    --g-card: #16161A;
    --g-border: rgba(255,255,255,0.06);
    --g-text: #F0F0F5;
    --g-text-secondary: #8E8E93;
    --g-radius: 12px;
    --g-radius-sm: 8px;
}

body.light-mode {
    --g-bg: #F5F5F7;
    --g-card: #FFFFFF;
    --g-border: rgba(0,0,0,0.08);
    --g-text: #1D1D1F;
    --g-text-secondary: #6E6E73;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--g-bg);
    color: var(--g-text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Animated gradient background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -2;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(123, 97, 255, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(88, 86, 214, 0.10) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(123, 97, 255, 0.05) 0%, transparent 70%),
        var(--g-bg);
    animation: bgShift 12s ease-in-out infinite alternate;
}

@keyframes bgShift {
    0% { filter: hue-rotate(0deg) brightness(1); }
    50% { filter: hue-rotate(15deg) brightness(1.05); }
    100% { filter: hue-rotate(-10deg) brightness(0.95); }
}

/* Subtle grid overlay */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(rgba(123, 97, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(123, 97, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
    pointer-events: none;
}

/* Floating orbs */
.orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    pointer-events: none;
    z-index: -1;
}
.orb-1 {
    width: 400px; height: 400px;
    background: var(--g-accent);
    top: -100px; right: -100px;
    animation: floatOrb 20s ease-in-out infinite;
}
.orb-2 {
    width: 300px; height: 300px;
    background: #5856D6;
    bottom: 10%; left: -80px;
    animation: floatOrb 25s ease-in-out infinite reverse;
}
.orb-3 {
    width: 250px; height: 250px;
    background: #AF52DE;
    top: 40%; right: 10%;
    animation: floatOrb 18s ease-in-out infinite 2s;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -40px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

a { color: var(--g-accent-light); text-decoration: none; }
a:hover { opacity: 0.85; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* Header */
.header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(13,13,15,0.75);
    backdrop-filter: blur(16px) saturate(1.2);
    border-bottom: 1px solid var(--g-border);
    box-shadow: 0 4px 30px rgba(0,0,0,0.1);
}
body.light-mode .header { background: rgba(245,245,247,0.75); }

.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 56px; gap: 16px;
}

.logo {
    display: flex; align-items: center; gap: 10px;
    font-size: 18px; font-weight: 700; color: var(--g-text);
}
.logo-icon {
    width: 34px; height: 34px; border-radius: 8px;
    background: var(--g-accent); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; font-weight: 700;
}

.nav { display: flex; gap: 20px; align-items: center; }
.nav a {
    font-size: 14px; font-weight: 500; color: var(--g-text-secondary);
    transition: color 0.15s;
}
.nav a:hover, .nav a.active { color: var(--g-text); }

.header-actions { display: flex; gap: 8px; }
.icon-btn {
    width: 36px; height: 36px; border-radius: 8px;
    background: transparent; border: 1px solid var(--g-border);
    color: var(--g-text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all 0.15s;
}
.icon-btn:hover { background: var(--g-card); color: var(--g-text); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 18px; border-radius: var(--g-radius-sm);
    font-size: 14px; font-weight: 600; border: none; cursor: pointer;
    transition: all 0.15s; white-space: nowrap;
}
.btn-primary {
    background: var(--g-accent); color: #fff;
}
.btn-primary:hover { background: var(--g-accent-light); }
.btn-secondary {
    background: var(--g-card); color: var(--g-text);
    border: 1px solid var(--g-border);
}
.btn-secondary:hover { background: rgba(255,255,255,0.04); }
body.light-mode .btn-secondary:hover { background: rgba(0,0,0,0.03); }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-danger { color: #FF3B30; border-color: rgba(255,59,48,0.2); }
.btn-danger:hover { background: rgba(255,59,48,0.08); }

/* Inputs */
.input, .select {
    width: 100%; background: var(--g-card);
    border: 1px solid var(--g-border); border-radius: var(--g-radius-sm);
    padding: 10px 14px; color: var(--g-text); font-size: 14px;
    outline: none; transition: border-color 0.15s;
    font-family: inherit;
}
.input:focus, .select:focus { border-color: var(--g-accent); }

/* Grid & Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.card {
    background: var(--g-card);
    border: 1px solid var(--g-border);
    border-radius: var(--g-radius);
    overflow: hidden;
    display: flex; flex-direction: column;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    position: relative;
}
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--g-radius);
    padding: 1px;
    background: linear-gradient(135deg, rgba(123,97,255,0.2), transparent 40%, transparent 60%, rgba(88,86,214,0.15));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(123, 97, 255, 0.08), 0 4px 12px rgba(0,0,0,0.2);
    border-color: rgba(123, 97, 255, 0.15);
}
.card:hover::before {
    opacity: 1;
}

.card-img {
    position: relative;
    height: 160px;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.card-img img {
    width: 100%; height: 100%; object-fit: cover;
}

.card-badge {
    position: absolute; top: 10px; right: 10px;
    padding: 4px 10px; border-radius: 6px;
    font-size: 11px; font-weight: 700; letter-spacing: 0.3px;
}
.badge-free { background: #34C759; color: #fff; }
.badge-paid { background: var(--g-accent); color: #fff; }

.card-body { padding: 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-title { font-size: 15px; font-weight: 600; line-height: 1.3; }
.card-desc {
    font-size: 13px; color: var(--g-text-secondary); line-height: 1.5;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden;
}
.card-meta {
    display: flex; justify-content: space-between; align-items: center;
    font-size: 12px; color: var(--g-text-secondary); margin-top: auto; padding-top: 8px;
    border-top: 1px solid var(--g-border);
}
.card-price { color: var(--g-accent-light); font-weight: 600; }

/* Admin Table */
.admin-table {
    width: 100%; border-collapse: collapse; font-size: 14px;
}
.admin-table th, .admin-table td {
    padding: 12px 14px; text-align: left;
    border-bottom: 1px solid var(--g-border);
}
.admin-table th {
    font-weight: 600; font-size: 12px; color: var(--g-text-secondary);
    text-transform: uppercase; letter-spacing: 0.3px;
}
.admin-table tr:hover td { background: rgba(255,255,255,0.02); }
body.light-mode .admin-table tr:hover td { background: rgba(0,0,0,0.02); }

/* Comments */
.comment {
    background: var(--g-card); border: 1px solid var(--g-border);
    border-radius: var(--g-radius-sm); padding: 14px; margin-bottom: 10px;
}
.comment-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 8px;
}
.comment-author { font-weight: 600; font-size: 14px; }
.comment-date { font-size: 12px; color: var(--g-text-secondary); }
.comment-text { font-size: 14px; color: var(--g-text-secondary); line-height: 1.6; }

/* Modal */
.modal-overlay {
    position: fixed; inset: 0; z-index: 200;
    background: rgba(0,0,0,0.6);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none;
    transition: opacity 0.2s;
    padding: 16px;
}
.modal-overlay.active { opacity: 1; pointer-events: all; }
.modal {
    background: var(--g-card); border: 1px solid var(--g-border);
    border-radius: var(--g-radius); padding: 24px;
    width: 100%; max-width: 420px;
    transform: scale(0.96); transition: transform 0.2s;
}
.modal-overlay.active .modal { transform: scale(1); }
.modal h3 { font-size: 18px; font-weight: 600; margin-bottom: 16px; }

/* Footer */
.footer {
    margin-top: auto;
    border-top: 1px solid var(--g-border);
    padding: 24px 0;
    text-align: center; font-size: 13px; color: var(--g-text-secondary);
}
.footer a { margin: 0 8px; }

/* Status badges */
.status {
    display: inline-block; padding: 3px 10px; border-radius: 20px;
    font-size: 12px; font-weight: 600;
}
.status-new { background: rgba(255,59,48,0.12); color: #FF3B30; }
.status-progress { background: rgba(255,204,0,0.12); color: #FFCC00; }
.status-closed { background: rgba(52,199,89,0.12); color: #34C759; }

/* Toast */
.toast {
    position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%) translateY(30px);
    background: var(--g-card); border: 1px solid var(--g-border);
    padding: 18px 32px; border-radius: var(--g-radius);
    font-size: 16px; font-weight: 600; color: var(--g-text);
    opacity: 0; pointer-events: none; transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1); z-index: 300;
    box-shadow: 0 12px 40px rgba(0,0,0,0.35);
    max-width: 90vw; text-align: center; white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Material page */
.material-cover img { transition: transform 0.3s; }
.material-cover:hover img { transform: scale(1.03); }

/* Responsive */
@media (max-width: 640px) {
    .nav { display: none; }
    .grid { grid-template-columns: 1fr; }
    .material-header { flex-direction: column; }
    .material-cover { width: 100% !important; height: 200px !important; }
}