/* ===== CSS Reset & Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --radius: 12px;
    --radius-sm: 8px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== Header & Search ===== */
.search-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: linear-gradient(to bottom, var(--bg-main) 0%, var(--bg-main) 80%, transparent 100%);
    padding: 2rem 1.5rem 1rem;
    backdrop-filter: blur(12px);
}

.search-nav {
    max-width: 800px;
    margin: 0 auto;
}

.search-searchbar {
    display: flex;
    gap: 0;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 999px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.search-searchbar:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2), var(--shadow-lg);
}

.search-input {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    background: transparent;
    border: none;
    color: var(--text-primary);
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-button {
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-button:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
}

.search-second-nav {
    max-width: 800px;
    margin: 1rem auto 0;
    padding: 0 0.5rem;
}

.search-second-nav p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== Main Content ===== */
.search-results {
    max-width: 900px;
    margin: 0 auto;
    padding: 1rem 1.5rem 3rem;
    display: grid;
    gap: 1rem;
}

/* ===== Subtitle Card ===== */
.subtitle-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    display: grid;
    gap: 0.75rem;
}

.subtitle-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.subtitle-title {
    flex: 1;
}

.subtitle-cnname {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    line-height: 1.4;
}

.subtitle-enname {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.subtitle-segment {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* ===== Tags ===== */
.subtitle-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.tag-lang {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-light);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.tag-format {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.tag-source {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* ===== Stats ===== */
.subtitle-stats {
    display: flex;
    gap: 1.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
    margin-top: 0.25rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stat-icon {
    font-size: 1rem;
}

.stat-value {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== Download Button ===== */
.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.download-btn:hover {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 1.1rem;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.subtitle-card {
    animation: fadeIn 0.4s ease backwards;
}

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

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .search-header {
        padding: 1.5rem 1rem 0.75rem;
    }

    .search-input {
        padding: 0.875rem 1.25rem;
        font-size: 1rem;
    }

    .search-button {
        padding: 0.875rem 1.25rem;
    }

    .subtitle-card {
        padding: 1rem 1.25rem;
    }

    .subtitle-cnname {
        font-size: 1.05rem;
    }

    .subtitle-header {
        flex-direction: column;
        gap: 0.75rem;
    }

    .subtitle-stats {
        gap: 1rem;
        flex-wrap: wrap;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== Selection ===== */
::selection {
    background: var(--primary);
    color: white;
}