/* ============================================================
   小说搜 - 前端样式 (Modern Dark Theme)
   ============================================================ */

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

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #161822;
    --bg-card: #1a1d2e;
    --bg-hover: #212438;
    --border: #2a2d3e;
    --border-light: #343750;
    --text-primary: #e4e6f0;
    --text-secondary: #9498b0;
    --text-muted: #636782;
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --accent-dark: #5541d7;
    --accent-glow: rgba(108, 92, 231, 0.25);
    --success: #00d68f;
    --success-bg: rgba(0, 214, 143, 0.1);
    --error: #ff6b6b;
    --error-bg: rgba(255, 107, 107, 0.1);
    --warning: #ffa94d;
    --warning-bg: rgba(255, 169, 77, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

html { font-size: 15px; scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
                 "Microsoft YaHei", "Helvetica Neue", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* --- Navbar --- */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-brand {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
}
.nav-brand:hover { opacity: 0.85; }

.nav-links { display: flex; align-items: center; gap: 20px; font-size: 0.9rem; }
.nav-links a { color: var(--text-secondary); transition: color var(--transition); }
.nav-links a:hover { color: var(--text-primary); }
.nav-user {
    color: var(--accent-light);
    font-weight: 500;
    padding: 4px 12px;
    background: var(--accent-glow);
    border-radius: 20px;
    font-size: 0.85rem;
}

/* --- Main Container --- */
.main-container {
    flex: 1;
    max-width: 1000px;
    margin: 0 auto;
    padding: 32px 24px 64px;
    width: 100%;
}

/* --- Auth Pages --- */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f1117 0%, #1a1040 50%, #0f1117 100%);
}
.auth-container { width: 100%; max-width: 420px; padding: 24px; }
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 36px;
    box-shadow: var(--shadow-lg);
}
.auth-header { text-align: center; margin-bottom: 32px; }
.logo-link {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}
.auth-subtitle { color: var(--text-muted); margin-top: 8px; font-size: 0.9rem; }
.auth-form { display: flex; flex-direction: column; gap: 18px; }
.auth-footer { text-align: center; margin-top: 24px; color: var(--text-muted); font-size: 0.9rem; }

/* --- Forms --- */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; color: var(--text-secondary); font-weight: 500; }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-input {
    width: 100%;
    padding: 11px 14px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all var(--transition);
    outline: none;
}
.form-group input:focus,
.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.password-field { position: relative; }
.password-field input { padding-right: 44px; }
.toggle-password {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    transition: color var(--transition);
}
.toggle-password:hover { color: var(--text-primary); }

.form-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.form-row .form-input { flex: 1; min-width: 160px; }

.inline-form { width: 100%; }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
    line-height: 1.4;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff;
    box-shadow: 0 2px 12px var(--accent-glow);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--accent-glow);
    color: #fff;
}
.btn-outline {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
}
.btn-outline:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--text-primary);
}
.btn-danger {
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid transparent;
}
.btn-danger:hover { background: var(--error); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 6px 14px; font-size: 0.82rem; }
.btn-copied { border-color: var(--success) !important; color: var(--success) !important; }
.btn-error { border-color: var(--error) !important; color: var(--error) !important; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* --- Alerts --- */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
}
.alert-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(0,214,143,0.2); }
.alert-error { background: var(--error-bg); color: var(--error); border: 1px solid rgba(255,107,107,0.2); }

/* --- Search Hero --- */
.search-hero {
    text-align: center;
    padding: 40px 0 32px;
}
.search-hero h1 {
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #a29bfe, #6c5ce7, #fd79a8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
    margin-bottom: 8px;
}
.hero-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 28px;
}

.search-box {
    display: flex;
    max-width: 640px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 2px solid var(--border);
    border-radius: 50px;
    overflow: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow);
}
.search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}
.search-input {
    flex: 1;
    padding: 14px 22px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.05rem;
    outline: none;
}
.search-input::placeholder { color: var(--text-muted); }
.search-btn {
    padding: 0 24px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border: none;
    color: #fff;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
}
.search-btn:hover { opacity: 0.9; }

/* --- Search History Tags --- */
.search-history-tags {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}
.tags-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-right: 4px;
}
.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 5px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition);
    text-decoration: none;
}
.tag:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    background: var(--bg-hover);
}
.tag-more { border-style: dashed; }
.tag-count {
    font-size: 0.7rem;
    color: var(--text-muted);
    background: var(--bg-primary);
    padding: 1px 6px;
    border-radius: 10px;
}

/* --- Results Section --- */
.results-section { margin-top: 32px; }
.results-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 16px;
}
.results-header h2 { font-size: 1.15rem; font-weight: 600; color: var(--text-primary); }
.results-count { color: var(--text-muted); font-size: 0.9rem; }

/* --- File Card --- */
.file-list { display: flex; flex-direction: column; gap: 8px; }
.file-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 18px;
    transition: all var(--transition);
}
.file-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 16px var(--accent-glow);
    transform: translateX(2px);
}
.file-card-history { opacity: 0.7; }
.file-card-history:hover { opacity: 1; }

.file-icon { flex-shrink: 0; }
.file-type-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}
.type-txt { background: rgba(108, 92, 231, 0.2); color: var(--accent-light); }
.type-epub { background: rgba(0, 214, 143, 0.15); color: var(--success); }
.type-mobi { background: rgba(255, 169, 77, 0.15); color: var(--warning); }
.type-pdf { background: rgba(255, 107, 107, 0.15); color: var(--error); }
.type-zip { background: rgba(148, 152, 176, 0.15); color: var(--text-secondary); }
.type-other { background: rgba(148, 152, 176, 0.1); color: var(--text-muted); }

.file-info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}
.file-name {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.95rem;
}
.file-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 3px;
}
.meta-sep { color: var(--border-light); }

.file-actions {
    flex-shrink: 0;
    display: flex;
    gap: 8px;
    align-items: center;
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-icon { margin-bottom: 16px; color: var(--border-light); }
.empty-state p { font-size: 1rem; }

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}
.card-title {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* --- Tables --- */
.history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.history-table th {
    text-align: left;
    padding: 10px 12px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
}
.history-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}
.history-table tr:hover td { background: rgba(108,92,231,0.03); }
.td-name { max-width: 300px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.td-time { white-space: nowrap; font-size: 0.85rem; color: var(--text-muted); }
.td-actions { white-space: nowrap; display: flex; gap: 6px; }

/* --- Badges --- */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }

/* --- Admin --- */
.admin-page { max-width: 1100px; }
.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}
.admin-header h1 { font-size: 1.5rem; font-weight: 700; }
.admin-actions-top { display: flex; gap: 10px; }

/* --- History Page --- */
.history-page { display: flex; flex-direction: column; gap: 32px; }
.history-section { }
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}
.section-header h2 { font-size: 1.1rem; font-weight: 600; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }

/* --- Footer --- */
.site-footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

/* --- Utilities --- */
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.82rem; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .main-container { padding: 20px 16px 48px; }
    .search-hero h1 { font-size: 1.6rem; }
    .search-hero { padding: 24px 0 20px; }
    .file-card { flex-wrap: wrap; gap: 10px; padding: 12px 14px; }
    .file-actions { width: 100%; margin-left: 58px; }
    .nav-inner { padding: 0 16px; }
    .nav-links { gap: 12px; font-size: 0.82rem; }
    .auth-card { padding: 28px 20px; }
    .form-row { flex-direction: column; }
    .admin-header { flex-direction: column; align-items: flex-start; }
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- Selection --- */
::selection { background: var(--accent-glow); color: var(--text-primary); }