/* ============================================
   积分管理系统 - 科技感主题
   ============================================ */

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    color-scheme: dark;
    /* 向下兼容旧变量名 */
    --gray-50: #0f172a;
    --gray-100: #1e293b;
    --gray-200: #334155;
    --gray-300: #475569;
    --gray-400: #64748b;
    --gray-500: #94a3b8;
    --gray-600: #cbd5e1;
    --gray-700: #e2e8f0;
    --gray-800: #f1f5f9;
    --gray-900: #f8fafc;
    --bg-card: rgba(17, 24, 39, 0.85);
    --bg-card-hover: rgba(30, 41, 59, 0.9);
    --border-color: rgba(99, 102, 241, 0.2);
    --border-glow: rgba(99, 102, 241, 0.4);

    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.3);
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.3);
    --warning: #f59e0b;
    --warning-glow: rgba(245, 158, 11, 0.3);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-glow: rgba(99, 102, 241, 0.15);
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5), 0 4px 6px -4px rgba(0,0,0,0.3);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 背景动态网格 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

/* 顶部渐晕 */
body::after {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 50% 0%, rgba(99, 102, 241, 0.06) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: all 0.2s;
}

a:hover {
    color: white;
    text-shadow: 0 0 8px var(--text-glow);
}

/* Header */
.header {
    position: relative;
    z-index: 10;
    background: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 24px;
}

.header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
    opacity: 0.5;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.header .logo {
    font-size: 20px;
    font-weight: 800;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header .logo:hover {
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    filter: brightness(1.2);
}

.header .nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.header .nav a {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    position: relative;
    padding: 4px 0;
}

.header .nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s;
    border-radius: 1px;
}

.header .nav a:hover {
    color: white;
    text-decoration: none;
}

.header .nav a:hover::after {
    width: 100%;
}

.header .nav .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.header .nav .points-badge {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2), rgba(245, 158, 11, 0.2));
    border: 1px solid rgba(251, 191, 36, 0.3);
    padding: 4px 14px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 13px;
    color: #fbbf24;
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    position: relative;
    z-index: 1;
}

/* Cards - Glassmorphism */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 24px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.3;
}

.card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow), var(--shadow-md);
    background: var(--bg-card-hover);
}

.card-header {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Grid */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 20px; }

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .header-inner { flex-direction: column; height: auto; padding: 12px 0; gap: 8px; }
    .header .nav { flex-wrap: wrap; justify-content: center; gap: 12px; }
}

/* Buttons - 科技感 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 22px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn:hover { text-decoration: none; transform: translateY(-2px); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-color: var(--primary);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.2);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: white;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #059669);
    color: white;
    box-shadow: 0 0 12px var(--success-glow);
}
.btn-success:hover {
    color: white;
    box-shadow: 0 0 24px var(--success-glow);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #dc2626);
    color: white;
    box-shadow: 0 0 12px var(--danger-glow);
}
.btn-danger:hover {
    color: white;
    box-shadow: 0 0 24px var(--danger-glow);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning), #d97706);
    color: #1c1917;
}
.btn-warning:hover {
    color: #1c1917;
    box-shadow: 0 0 20px var(--warning-glow);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border-color);
}
.btn-outline:hover {
    background: rgba(99, 102, 241, 0.1);
    color: white;
    border-color: var(--primary);
    box-shadow: 0 0 12px var(--text-glow);
}

.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 14px 30px; font-size: 16px; }

/* Forms */
.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.25s;
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15), 0 0 12px rgba(99, 102, 241, 0.1);
    background: rgba(15, 23, 42, 0.8);
}

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

/* 强制所有表单元素暗色 */
input, select, textarea, button, option, optgroup {
    color-scheme: dark;
}

/* option 暗色 */
option {
    background: #1e293b !important;
    color: #e2e8f0 !important;
}

select option {
    background: #1e293b !important;
    color: #e2e8f0 !important;
}

select * {
    background: #1e293b !important;
    color: #e2e8f0 !important;
}

/* select 彻底暗色 */
select {
    background-color: rgba(15, 23, 42, 0.6) !important;
    color: var(--text-primary) !important;
}

textarea.form-input { min-height: 100px; resize: vertical; }

/* Checkbox / Radio 暗色样式 */
input[type="checkbox"], input[type="radio"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: rgba(15, 23, 42, 0.8);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: all 0.2s;
}

input[type="checkbox"]:checked {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

input[type="radio"] {
    border-radius: 50%;
}

input[type="radio"]:checked {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

input[type="radio"]:checked::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

select.form-input {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: rgba(15, 23, 42, 0.8) !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

table th {
    background: rgba(15, 23, 42, 0.5);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(99, 102, 241, 0.08);
    color: var(--text-primary);
}

table tr:hover td {
    background: rgba(99, 102, 241, 0.05);
}

table tr:last-child td {
    border-bottom: none;
}

/* Stats / Dashboard */
.stat-card {
    text-align: center;
    padding: 28px 24px;
    position: relative;
}

.stat-card .stat-icon {
    font-size: 32px;
    margin-bottom: 8px;
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.3));
}

.stat-card .stat-value {
    font-size: 30px;
    font-weight: 800;
    background: linear-gradient(135deg, white, var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Points badge */
.points-display {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.15), rgba(245, 158, 11, 0.15));
    border: 1px solid rgba(251, 191, 36, 0.25);
    padding: 6px 16px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 15px;
    color: #fbbf24;
}

/* Auth pages */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    position: relative;
}

.auth-page::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -20%;
    width: 60%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

.auth-page::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -20%;
    width: 60%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.auth-box {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.auth-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
    border-radius: 20px 20px 0 0;
}

.auth-box h1 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 8px;
    font-weight: 800;
    background: linear-gradient(135deg, white, var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-box .subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 28px;
    font-size: 14px;
}

/* Footer */
/* 暗色 <hr> */
hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
    margin: 16px 0;
}

/* 暗色列表 */
ul, ol {
    padding-left: 20px;
    color: var(--text-primary);
}

li {
    margin-bottom: 4px;
    color: var(--text-secondary);
}

.footer {
    text-align: center;
    padding: 32px 24px;
    color: var(--text-muted);
    font-size: 13px;
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border-color);
    margin-top: 40px;
}

.footer::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.3;
}

/* Status badges */
.badge {
    display: inline-block;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-success { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-danger  { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-info    { background: rgba(59, 130, 246, 0.15); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.3); }

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 24px;
}

.pagination a, .pagination span {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    background: transparent;
}

.pagination a:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--primary);
    color: white;
    text-decoration: none;
    box-shadow: 0 0 8px var(--text-glow);
}

.pagination .active {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-color: var(--primary);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.3);
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 24px;
    color: var(--text-muted);
}

.empty-state .icon { font-size: 48px; margin-bottom: 12px; filter: grayscale(0.5); }
.empty-state p { font-size: 15px; }

/* 动画 */
@keyframes pulse-glow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

@keyframes fade-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    animation: fade-in 0.4s ease-out;
}

/* 滚动条 */
/* 防止Chrome自动填充显示白色背景 */
input:-webkit-autofill,
input:-webkit-autofill:hover,
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px rgba(15, 23, 42, 0.9) inset !important;
    -webkit-text-fill-color: var(--text-primary) !important;
    caret-color: var(--text-primary);
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

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

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

/* 选中文字 */
::selection {
    background: rgba(99, 102, 241, 0.3);
    color: white;
}

/* 分割线装饰 */
.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
    margin: 32px 0;
    opacity: 0.3;
}