:root {
    --font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --color-bg: #0b0e13;
    --color-surface: #161a21;
    --color-surface-2: #1f232c;
    --color-border: rgba(255, 255, 255, 0.04);
    --color-text: #f6f7ff;
    --color-text-muted: #97a1b6;
    --color-primary: #8ab4f8;
    --color-primary-soft: rgba(138, 180, 248, 0.2);
    --color-warning: #fdd663;
    --color-success: #34e0a1;
    --shadow-lg: 0 25px 55px rgba(5, 6, 10, 0.65);
    --radius-card: 12px;
    --radius-pill: 999px;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    transition: background 0.3s ease, color 0.3s ease;
}

.theme-dark {
    --color-bg: #0b0e13;
    --color-surface: #161a21;
    --color-surface-2: #1f232c;
    --color-border: rgba(255, 255, 255, 0.04);
    --color-text: #f6f7ff;
    --color-text-muted: #97a1b6;
    --color-primary: #8ab4f8;
    --color-primary-soft: rgba(138, 180, 248, 0.2);
    --color-warning: #fdd663;
    --color-success: #34e0a1;
    --shadow-lg: 0 25px 55px rgba(5, 6, 10, 0.65);
}

.theme-light {
    --color-bg: #f5f7fb;
    --color-surface: #ffffff;
    --color-surface-2: #eef1f7;
    --color-border: rgba(15, 23, 42, 0.08);
    --color-text: #1f1f24;
    --color-text-muted: #5c6070;
    --color-primary: #1a73e8;
    --color-primary-soft: rgba(26, 115, 232, 0.12);
    --color-warning: #fbbc05;
    --color-success: #34a853;
    --shadow-lg: 0 18px 35px rgba(15, 23, 42, 0.18);
}

.app-navbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    transition: background 0.3s ease, border 0.3s ease;
}

.theme-dark .app-navbar {
    background: #0b0d11;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.page-wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.page-title {
    font-size: clamp(1.5rem, 3vw, 2.35rem);
    font-weight: 600;
    letter-spacing: -0.5px;
}

.section-subtitle {
    color: var(--color-text-muted);
}

.surface-card {
    background: var(--color-surface);
    border-radius: var(--radius-card);
    border: 1px solid var(--color-border);
    padding: 1.75rem;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.surface-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.theme-dark .text-muted {
    color: var(--color-text-muted) !important;
}

.surface-chip {
    border-radius: var(--radius-pill);
    padding: 0.4rem 0.95rem;
    border: 1px solid var(--color-border);
    background: var(--color-surface-2);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.pill-button {
    border-radius: var(--radius-pill);
}

.list-card {
    border-radius: var(--radius-card);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 1.25rem 1.5rem;
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.08);
}

.grid-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.dark-toggle {
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    color: var(--color-text);
    padding: 0.35rem 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.theme-dark .dark-toggle {
    background: rgba(255, 255, 255, 0.05);
}

.card-media {
    border-radius: var(--radius-card);
    overflow: hidden;
    background: linear-gradient(160deg, var(--color-surface-2), rgba(26, 115, 232, 0.08));
    min-height: 160px;
}

.tab-pill .nav-link {
    border-radius: var(--radius-pill);
    color: var(--color-text-muted);
    border: 1px solid transparent;
}

.tab-pill .nav-link.active {
    background: var(--color-primary-soft);
    color: var(--color-primary);
    border-color: transparent;
}

.btn-outline-secondary {
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-outline-secondary:hover {
    background: var(--color-surface-2);
    color: var(--color-text);
}

.btn-outline-primary {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.alert-soft {
    border-radius: var(--radius-card);
    border: 1px dashed var(--color-border);
    background: var(--color-surface-2);
    color: var(--color-text-muted);
}