/* ========================================
   main.css - 刀客短视频分发系统 公共样式
   Glassmorphism Design · CSS Grid · Flex · 动画 · 响应式
   ======================================== */

/* ---------- :root 默认变量 ---------- */
:root {
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --text-color: #fff;
    --text-secondary: rgba(255, 255, 255, 0.85);
    --text-muted: rgba(255, 255, 255, 0.65);
    --card-bg: rgba(255, 255, 255, 0.2);
    --card-border: rgba(255, 255, 255, 0.35);
    --card-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.5);
    --card-hover-shadow: 0 16px 48px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    --primary-color: #667eea;
    --primary-hover: #7c3aed;
    --primary-light: rgba(255, 255, 255, 0.15);
    --primary-glow: rgba(102, 126, 234, 0.4);
    --secondary-color: #764ba2;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --input-bg: rgba(255, 255, 255, 0.15);
    --input-border: rgba(255, 255, 255, 0.35);
    --input-focus: rgba(255, 255, 255, 0.7);
    --nav-bg: rgba(255, 255, 255, 0.2);
    --nav-height: 68px;
    --sidebar-bg: rgba(255, 255, 255, 0.2);
    --sidebar-width: 248px;
    --border-radius: 16px;
    --border-radius-sm: 12px;
    --border-radius-lg: 24px;
    --border-radius-xl: 28px;
    --transition-speed: 0.3s;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
body {
    font-family: -apple-system, 'PingFang SC', 'Segoe UI', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    background: var(--bg-gradient);
    color: var(--text-color);
    font-size: 15px;
    line-height: 1.6;
    transition: background 0.4s ease, color 0.4s ease;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    position: relative;
    letter-spacing: 0.01em;
}

body::before {
    content: '';
    position: fixed;
    top: -15%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.5) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    animation: float 18s ease-in-out infinite;
    filter: blur(100px);
    opacity: 0.6;
}

body::after {
    content: '';
    position: fixed;
    bottom: -12%;
    left: -8%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.45) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    animation: float 22s ease-in-out infinite reverse;
    filter: blur(100px);
    opacity: 0.5;
}

a { color: rgba(255, 255, 255, 0.9); text-decoration: none; transition: color 0.25s, transform 0.2s; }
a:hover { color: #fff; }
img { max-width: 100%; height: auto; }

.card {
    background: var(--card-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    padding: 1.6rem;
    margin: 0.8rem 0;
    transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s, background 0.35s;
}
.card:hover { transform: translateY(-4px); background: rgba(255, 255, 255, 0.28); box-shadow: var(--card-hover-shadow); border-color: rgba(255, 255, 255, 0.5); }
.card-static { transition: none; }
.card-static:hover { transform: none; box-shadow: var(--card-shadow); border-color: var(--card-border); background: var(--card-bg); }

.glass {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn, button, input[type="submit"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(255,255,255,0.85));
    color: var(--primary-color);
    border: none;
    padding: 12px 26px;
    border-radius: 14px;
    cursor: pointer;
    font-size: 0.93em;
    font-weight: 650;
    font-family: inherit;
    letter-spacing: 0.02em;
    transition: transform 0.25s, box-shadow 0.25s, background 0.25s;
    position: relative;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255,255,255,0.8);
}
.btn::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), transparent); opacity: 0; transition: opacity 0.25s; }
.btn:hover::before { opacity: 1; }
.btn:hover, button:hover, input[type="submit"]:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2); }
.btn:active, button:active, input[type="submit"]:active { transform: scale(0.97) translateY(0); }
.btn:disabled, button:disabled, input[type="submit"]:disabled { opacity: 0.5 !important; cursor: not-allowed; transform: none !important; box-shadow: none !important; }
.btn-sm { padding: 8px 18px; font-size: 0.84em; border-radius: 10px; }
.btn-success { background: linear-gradient(135deg, rgba(34,197,94,0.95), rgba(22,163,74,0.95)) !important; color: #fff !important; }
.btn-danger { background: linear-gradient(135deg, rgba(239,68,68,0.95), rgba(220,38,38,0.95)) !important; color: #fff !important; }
.btn-warning { background: linear-gradient(135deg, rgba(245,158,11,0.95), rgba(217,119,6,0.95)) !important; color: #fff !important; }
.btn-outline { background: transparent !important; border: 2px solid rgba(255, 255, 255, 0.6) !important; color: #fff !important; box-shadow: none; }
.btn-outline:hover { background: rgba(255,255,255,0.25) !important; border-color: #fff !important; }
.btn-outline::before { display: none; }

input[type="text"], input[type="password"], input[type="email"], input[type="number"], input[type="url"], input[type="tel"], select, textarea {
    width: 100%;
    padding: 13px 18px;
    margin: 6px 0 16px;
    border: 2px solid var(--input-border);
    border-radius: 14px;
    background: var(--input-bg);
    backdrop-filter: blur(10px);
    color: #fff;
    font-size: 0.94em;
    font-family: inherit;
    transition: border-color 0.28s, box-shadow 0.28s, background 0.28s;
    outline: none;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
}
input::placeholder, textarea::placeholder { color: rgba(255,255,255,0.5); }
input:focus, select:focus, textarea:focus { border-color: var(--input-focus); background: rgba(255, 255, 255, 0.22); box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2), inset 0 2px 4px rgba(0,0,0,0.05); }
textarea { resize: vertical; min-height: 90px; }
label { display: block; font-weight: 600; margin-bottom: 6px; color: rgba(255,255,255,0.9); font-size: 0.9em; text-shadow: 0 1px 2px rgba(0,0,0,0.1); }
.form-group { display: flex; flex-direction: column; margin-bottom: 4px; }
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row > .form-group { flex: 1; min-width: 220px; }
.input-icon-wrap { position: relative; }
.input-icon-wrap i { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: rgba(255,255,255,0.6); font-size: 0.9em; z-index: 1; transition: color 0.25s; }
.input-icon-wrap:focus-within i { color: #fff; }
.input-icon-wrap input { padding-left: 46px; }

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--nav-bg);
    backdrop-filter: blur(30px) saturate(200%);
    -webkit-backdrop-filter: blur(30px) saturate(200%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    z-index: 1000;
    transition: background 0.35s, box-shadow 0.35s, transform 0.3s;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}
.navbar.scrolled { background: rgba(255, 255, 255, 0.35); box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12); }
.navbar-brand { display: flex; align-items: center; gap: 12px; font-size: 1.2em; font-weight: 750; color: #fff; cursor: pointer; text-decoration: none; text-shadow: 0 2px 10px rgba(0,0,0,0.2); }
.navbar-brand i { font-size: 1.3em; background: linear-gradient(135deg, #fff, rgba(255,255,255,0.8)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.navbar-links { display: flex; align-items: center; gap: 6px; }
.navbar-links a { color: rgba(255, 255, 255, 0.85); font-weight: 500; font-size: 0.92em; padding: 10px 16px; border-radius: 12px; transition: all 0.25s; position: relative; text-decoration: none; backdrop-filter: blur(5px); }
.navbar-links a:hover { color: #fff; background: rgba(255, 255, 255, 0.25); text-shadow: 0 0 10px rgba(255,255,255,0.5); }
.navbar-links a.active { color: #fff; background: rgba(255, 255, 255, 0.35); font-weight: 600; box-shadow: 0 4px 16px rgba(0,0,0,0.1); }
.navbar-right { display: flex; align-items: center; gap: 16px; }
.navbar-user { color: #fff; font-size: 0.9em; font-weight: 550; display: flex; align-items: center; gap: 8px; padding: 8px 16px; background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(10px); border-radius: 50px; border: 1px solid rgba(255,255,255,0.3); box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
.navbar-user a { color: #fff; text-decoration: none; font-weight: 500; }
.theme-toggle { width: 42px; height: 42px; background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(10px); border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 50%; color: #fff; font-size: 1em; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: all 0.3s; flex-shrink: 0; }
.theme-toggle:hover { background: rgba(255, 255, 255, 0.35); transform: rotate(20deg) scale(1.08); }
.theme-toggle:active { transform: rotate(20deg) scale(0.95); }

.mobile-tab {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(30px) saturate(200%);
    -webkit-backdrop-filter: blur(30px) saturate(200%);
    border-top: 1px solid rgba(255, 255, 255, 0.35);
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    box-shadow: 0 -4px 24px rgba(0,0,0,0.1);
}
.mobile-tab a { display: flex; flex-direction: column; align-items: center; gap: 4px; color: rgba(255, 255, 255, 0.7); font-size: 0.7em; font-weight: 600; padding: 8px 0; transition: all 0.25s; text-decoration: none; position: relative; }
.mobile-tab a i { font-size: 1.3em; transition: transform 0.25s; }
.mobile-tab a.active, .mobile-tab a:hover { color: #fff; }
.mobile-tab a.active i { transform: scale(1.18); }
.mobile-tab a.active::before { content: ''; position: absolute; top: 0; width: 28px; height: 3px; background: #fff; border-radius: 0 0 4px 4px; box-shadow: 0 2px 8px rgba(255,255,255,0.4); }

.main-content { margin-top: calc(var(--nav-height) + 20px); padding: 0 28px 100px; max-width: 1200px; margin-left: auto; margin-right: auto; }

.hero-section {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 50%, rgba(240, 147, 251, 0.8) 100%);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    padding: 48px 36px;
    margin-bottom: 24px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.3);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.3);
}
.hero-section::before { content: ''; position: absolute; top: -60%; right: -30%; width: 450px; height: 450px; background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%); border-radius: 50%; animation: float 10s ease-in-out infinite; }
.hero-section::after { content: ''; position: absolute; bottom: -50%; left: -20%; width: 350px; height: 350px; background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%); border-radius: 50%; animation: float 12s ease-in-out infinite reverse; }
.hero-section h1 { font-size: 2em; font-weight: 800; margin-bottom: 12px; position: relative; letter-spacing: 0.02em; text-shadow: 0 2px 20px rgba(0,0,0,0.2); }
.hero-section p { font-size: 1.05em; opacity: 0.95; position: relative; margin-bottom: 28px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; position: relative; }
.hero-actions .btn { padding: 14px 32px; font-size: 1em; border-radius: 50px; background: rgba(255,255,255,0.95); color: var(--primary-color); font-weight: 700; box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.hero-actions .btn:hover { background: #fff; transform: translateY(-3px); box-shadow: 0 12px 32px rgba(0,0,0,0.25); }
.hero-actions .btn.btn-outline { background: transparent !important; border: 2.5px solid rgba(255,255,255,0.7); color: #fff !important; box-shadow: none; }
.hero-actions .btn.btn-outline:hover { background: rgba(255,255,255,0.2) !important; border-color: #fff; }

.stats-bar { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.stats-pill { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(10px); color: #fff; padding: 8px 18px; border-radius: 50px; font-weight: 600; font-size: 0.88em; border: 1px solid rgba(255,255,255,0.3); }

.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; margin: 20px 0; }
.stat-card { background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(20px); border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 22px; padding: 24px 18px; text-align: center; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.stat-card:hover { transform: translateY(-4px); background: rgba(255, 255, 255, 0.28); box-shadow: 0 16px 40px rgba(0,0,0,0.12); }
.stat-card .stat-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 14px; font-size: 1.3em; color: #fff; background: linear-gradient(135deg, rgba(255,255,255,0.3), rgba(255,255,255,0.1)); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.3); box-shadow: 0 4px 16px rgba(0,0,0,0.1); }
.stat-card .stat-icon.purple { background: linear-gradient(135deg, rgba(102, 126, 234, 0.9), rgba(118, 75, 162, 0.9)); }
.stat-card .stat-icon.green { background: linear-gradient(135deg, rgba(34, 197, 94, 0.9), rgba(22, 163, 74, 0.9)); }
.stat-card .stat-icon.orange { background: linear-gradient(135deg, rgba(245, 158, 11, 0.9), rgba(217, 119, 6, 0.9)); }
.stat-card .stat-icon.blue { background: linear-gradient(135deg, rgba(59, 130, 246, 0.9), rgba(37, 99, 235, 0.9)); }
.stat-card .stat-value { font-size: 1.85em; font-weight: 800; color: #fff; line-height: 1.2; text-shadow: 0 2px 10px rgba(0,0,0,0.15); }
.stat-card .stat-label { font-size: 0.84em; color: rgba(255,255,255,0.75); margin-top: 6px; font-weight: 500; }

.material-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 20px; }
.mat-card { position: relative; display: flex; flex-direction: column; justify-content: space-between; min-height: 180px; overflow: hidden; background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(20px) saturate(180%); border: 1px solid rgba(255, 255, 255, 0.35); border-radius: 20px; padding: 18px; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.mat-card:hover { transform: translateY(-5px); background: rgba(255, 255, 255, 0.28); box-shadow: 0 16px 48px rgba(0,0,0,0.15); border-color: rgba(255, 255, 255, 0.5); }
.mat-thumb { width: 100%; height: 140px; object-fit: cover; border-radius: 14px; margin-bottom: 14px; background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(168, 85, 247, 0.15)); backdrop-filter: blur(5px); border: 1px solid rgba(255,255,255,0.2); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); font-size: 2.4em; overflow: hidden; }
.mat-card .mat-title { font-size: 1.02em; font-weight: 650; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; color: #fff; text-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.mat-card .mat-desc { color: rgba(255, 255, 255, 0.75); font-size: 0.87em; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; flex: 1; line-height: 1.5; }
.mat-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.mat-tag { font-size: 0.74em; padding: 4px 10px; border-radius: 10px; background: rgba(255, 255, 255, 0.15); color: rgba(255,255,255,0.9); font-weight: 550; border: 1px solid rgba(255,255,255,0.25); }
.mat-card .mat-footer { display: flex; justify-content: space-between; align-items: center; padding-top: 12px; border-top: 1px solid rgba(255,255,255,0.2); }
.mat-card .mat-time { font-size: 0.79em; color: rgba(255,255,255,0.65); }
.mat-card.claimed { opacity: 0.7; }
.mat-card.claimed::after { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; position: absolute; top: 14px; right: 14px; width: 34px; height: 34px; background: linear-gradient(135deg, rgba(34,197,94,0.95), rgba(22,163,74,0.95)); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.82em; box-shadow: 0 4px 16px rgba(34,197,94,0.4); border: 2px solid rgba(255,255,255,0.5); z-index: 2; }

.pagination { display: flex; justify-content: center; align-items: center; gap: 12px; margin: 32px 0; }
.pagination button { min-width: 44px; background: rgba(255,255,255,0.2); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.3); color: #fff; }
.pagination button:hover:not(:disabled) { background: rgba(255,255,255,0.35); }
.pagination .page-info { color: rgba(255,255,255,0.8); font-size: 0.9em; padding: 0 14px; font-weight: 500; }

.badge { display: inline-flex; align-items: center; gap: 5px; padding: 5px 12px; border-radius: 50px; font-size: 0.76em; font-weight: 650; letter-spacing: 0.02em; backdrop-filter: blur(10px); }
.badge-success { background: rgba(34,197,94,0.25); color: #86efac; border: 1px solid rgba(34, 197, 94, 0.4); }
.badge-danger { background: rgba(239,68,68,0.25); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.4); }
.badge-warning { background: rgba(245,158,11,0.25); color: #fcd34d; border: 1px solid rgba(245, 158, 11, 0.4); }
.badge-info, .badge-secondary { background: rgba(99,102,241,0.25); color: #c7d2fe; border: 1px solid rgba(99, 102, 241, 0.4); }

.announcement-card { border-left: 4px solid rgba(102, 126, 234, 0.8); padding-left: 20px; transition: all 0.3s; }
.announcement-card:hover { border-left-color: rgba(240, 147, 251, 0.9); transform: translateX(4px); }
.announcement-card .ann-title { font-weight: 650; font-size: 1.02em; margin-bottom: 8px; line-height: 1.4; color: #fff; }
.announcement-card .ann-content { color: rgba(255,255,255,0.8); font-size: 0.9em; line-height: 1.65; }
.announcement-card .ann-time { font-size: 0.79em; color: rgba(255,255,255,0.6); margin-top: 10px; display: flex; align-items: center; gap: 6px; }

.history-item { display: flex; flex-direction: column; gap: 10px; padding: 10px 0; }
.history-item .his-title { font-weight: 650; font-size: 0.98em; color: #fff; }
.history-item .his-meta { font-size: 0.85em; color: rgba(255,255,255,0.7); display: flex; flex-wrap: wrap; gap: 16px; }

.wd-record { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding: 12px 0; }
.wd-record .wd-left { display: flex; flex-direction: column; gap: 6px; }
.wd-record .wd-amount { font-size: 1.25em; font-weight: 800; background: linear-gradient(135deg, #fff, rgba(255,255,255,0.8)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.wd-record .wd-meta { font-size: 0.84em; color: rgba(255,255,255,0.7); }

.divider { height: 1px; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent); margin: 20px 0; border: none; }

.msg-success { background: rgba(34,197,94,0.25); color: #86efac; padding: 14px 18px; border-radius: 14px; margin: 10px 0; display: flex; align-items: center; gap: 10px; border: 1px solid rgba(34, 197, 94, 0.4); font-weight: 500; backdrop-filter: blur(10px); }
.msg-error { background: rgba(239,68,68,0.25); color: #fca5a5; padding: 14px 18px; border-radius: 14px; margin: 10px 0; display: flex; align-items: center; gap: 10px; border: 1px solid rgba(239, 68, 68, 0.4); font-weight: 500; backdrop-filter: blur(10px); }
.err-tip { color: var(--danger-color); font-size: 0.9em; margin: 8px 0; min-height: 1.2em; }

.empty-state { text-align: center; padding: 60px 24px; color: rgba(255,255,255,0.7); }
.empty-state i { font-size: 4em; margin-bottom: 16px; opacity: 0.3; background: linear-gradient(135deg, #fff, rgba(255,255,255,0.5)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.empty-state p { font-size: 0.96em; font-weight: 500; }

.quick-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 16px; margin: 20px 0; }
.quick-item { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 26px 16px; border-radius: 20px; background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(15px); color: #fff; font-size: 0.88em; font-weight: 600; text-decoration: none; border: 1px solid rgba(255,255,255,0.3); transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); cursor: pointer; box-shadow: 0 6px 20px rgba(0,0,0,0.08); }
.quick-item:hover { transform: translateY(-5px); background: rgba(255, 255, 255, 0.3); box-shadow: 0 12px 36px rgba(0,0,0,0.15); border-color: rgba(255,255,255,0.5); }
.quick-item i { font-size: 2em; background: linear-gradient(135deg, #fff, rgba(255,255,255,0.8)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInScale { from { opacity: 0; transform: scale(0.94); } to { opacity: 1; transform: scale(1); } }
@keyframes float { 0%, 100% { transform: translate(0, 0); } 50% { transform: translateY(-12px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes gradientShift { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
@keyframes glowPulse { 0%, 100% { box-shadow: 0 0 20px var(--primary-glow); } 50% { box-shadow: 0 0 36px var(--primary-glow), 0 0 12px var(--primary-color); } }

.fade-in-up { animation: fadeInUp 0.55s cubic-bezier(0.22, 1, 0.36, 1) both; }
.fade-in { animation: fadeIn 0.45s ease-out both; }
.fade-in-scale { animation: fadeInScale 0.5s cubic-bezier(0.22, 1, 0.36, 1) both; }
.anim-delay-1 { animation-delay: 0.08s; }
.anim-delay-2 { animation-delay: 0.16s; }
.anim-delay-3 { animation-delay: 0.24s; }
.anim-delay-4 { animation-delay: 0.32s; }

.spinner { display: inline-block; width: 24px; height: 24px; border: 3px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; animation: spin 0.7s linear infinite; }

.form-stack { display: flex; flex-direction: column; gap: 16px; }
.form-stack .form-group { margin-bottom: 0; }
.form-label { display: block; font-weight: 600; font-size: 0.9em; color: rgba(255,255,255,0.9); margin-bottom: 6px; }
.form-input { width: 100%; padding: 13px 18px; margin: 0; border: 2px solid var(--input-border); border-radius: 14px; background: var(--input-bg); backdrop-filter: blur(10px); color: #fff; font-size: 0.94em; font-family: inherit; transition: border-color 0.28s, box-shadow 0.28s; outline: none; }
.form-input:focus { border-color: var(--input-focus); box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.2); }
.form-actions { display: flex; gap: 12px; margin-top: 10px; flex-wrap: wrap; }

.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; }
.info-item { display: flex; flex-direction: column; gap: 6px; padding: 16px; background: rgba(255,255,255,0.15); backdrop-filter: blur(10px); border-radius: 14px; border: 1px solid rgba(255,255,255,0.2); }
.info-label { font-size: 0.82em; color: rgba(255,255,255,0.65); font-weight: 550; }
.info-value { font-size: 0.96em; color: #fff; font-weight: 600; }

.auth-page { display: flex; align-items: center; justify-content: center; min-height: calc(100vh - 160px); }
.auth-card { max-width: 460px; width: 100%; padding: 40px 36px; border-radius: var(--border-radius-xl); background: rgba(255, 255, 255, 0.15); backdrop-filter: blur(30px) saturate(200%); -webkit-backdrop-filter: blur(30px) saturate(200%); border: 1px solid rgba(255, 255, 255, 0.4); box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.5); }
.auth-icon-wrap { width: 72px; height: 72px; margin: 0 auto 20px; border-radius: 20px; background: linear-gradient(135deg, rgba(102, 126, 234, 0.9), rgba(118, 75, 162, 0.9)); display: flex; align-items: center; justify-content: center; font-size: 1.8em; color: #fff; box-shadow: 0 10px 40px rgba(102, 126, 234, 0.4); animation: float 3s ease-in-out infinite; }
.auth-btn { padding: 15px 28px !important; font-size: 1em !important; border-radius: 14px !important; font-weight: 650 !important; letter-spacing: 0.02em; }

.modal-overlay { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.4); backdrop-filter: blur(8px); z-index: 2000; display: flex; align-items: center; justify-content: center; }
.modal-content { max-width: 440px; width: 90%; text-align: center; padding: 36px; background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(30px) saturate(200%); -webkit-backdrop-filter: blur(30px) saturate(200%); border: 1px solid rgba(255, 255, 255, 0.4); border-radius: 24px; box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.5); }

.text-center { text-align: center; }
.text-muted { color: rgba(255,255,255,0.7); }
.text-primary { color: var(--primary-color); }
.text-success { color: #86efac; }
.text-danger { color: #fca5a5; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 18px; }
.mt-3 { margin-top: 28px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 18px; }
.mb-3 { margin-bottom: 28px; }
.gap-1 { gap: 10px; }
.gap-2 { gap: 16px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.hidden { display: none !important; }

.page-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,0.2); }
.page-header h2 { font-size: 1.4em; font-weight: 750; color: #fff; text-shadow: 0 2px 10px rgba(0,0,0,0.15); }
.page-header h2 i { background: linear-gradient(135deg, #fff, rgba(255,255,255,0.8)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

@media (max-width: 768px) {
    .navbar-links { display: none; }
    .mobile-tab { display: flex; }
    .navbar { padding: 0 20px; height: 62px; }
    .main-content { padding: 0 16px 96px; margin-top: calc(var(--nav-height) + 12px); }
    .material-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
    .quick-grid { grid-template-columns: repeat(3, 1fr); }
    .hero-section { padding: 36px 22px; border-radius: 22px; }
    .hero-section h1 { font-size: 1.5em; }
    .stat-cards { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .auth-card { padding: 30px 24px; }
    .navbar-user span { display: none; }
}

@media (max-width: 480px) {
    body { font-size: 14px; }
    .main-content { padding: 0 12px 88px; margin-top: calc(var(--nav-height) + 10px); }
    .card { padding: 1.2rem; border-radius: 18px; }
    .material-grid { grid-template-columns: 1fr; }
    .quick-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .quick-item { padding: 20px 10px; }
    .quick-item i { font-size: 1.6em; }
    .form-row { flex-direction: column; gap: 0; }
    .form-row > .form-group { min-width: 100%; }
    button, .btn, input[type="submit"] { padding: 11px 20px; }
    .navbar-brand span { display: none; }
    .hero-section { padding: 28px 18px; border-radius: 20px; }
    .hero-section h1 { font-size: 1.35em; }
    .hero-actions { flex-direction: column; align-items: center; }
    .hero-actions .btn { width: 100%; max-width: 240px; }
    .stat-cards { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-card { padding: 18px 14px; }
    .stat-card .stat-value { font-size: 1.5em; }
    .stats-bar { justify-content: center; }
    .page-header h2 { font-size: 1.18em; }
    .auth-card { padding: 26px 20px; border-radius: 22px; }
    .info-grid { grid-template-columns: 1fr; }

/* ---------- 骨架屏加载动画 ---------- */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.skeleton-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 18px;
    overflow: hidden;
}

.skeleton-img {
    width: 100%;
    height: 140px;
    border-radius: 14px;
    background: linear-gradient(90deg, rgba(255,255,255,0.08) 25%, rgba(255,255,255,0.18) 50%, rgba(255,255,255,0.08) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.6s infinite;
}

.skeleton-line {
    border-radius: 6px;
    background: linear-gradient(90deg, rgba(255,255,255,0.08) 25%, rgba(255,255,255,0.15) 50%, rgba(255,255,255,0.08) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.6s infinite;
}

/* ---------- 错误状态 ---------- */
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    border: 1px dashed rgba(255, 255, 255, 0.25);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.error-state .error-icon {
    font-size: 52px;
    color: rgba(251, 191, 36, 0.9);
    margin-bottom: 20px;
    animation: pulse-error 2s infinite;
}

@keyframes pulse-error {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

.error-state h3 {
    font-size: 1.25em;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.error-state p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
    margin-bottom: 24px;
    max-width: 320px;
}

.error-state .btn {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9), rgba(168, 85, 247, 0.9));
    border: none;
    padding: 12px 28px;
    font-weight: 600;
}

.error-state .btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

/* ---------- 空状态 ---------- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
}

.empty-state i {
    font-size: 52px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 16px;
}

.empty-state p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95em;
}
}