/* ===== 主题系统：亮色/暗色切换 ===== */

/* 引入精致字体 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Manrope:wght@400;500;600;700;800&family=Playfair+Display:wght@700;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-primary: #f9fafb;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f3f4f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --shadow-color: rgba(0,0,0,0.08);
    --accent-color: #8b5cf6;
    --accent-hover: #7c3aed;
    --sidebar-bg: #1e1b2e;
    --sidebar-text: #e5e7eb;
    --sidebar-active: rgba(139,92,246,0.2);
    --card-bg: #ffffff;
    --input-bg: #ffffff;
    --hover-bg: #f3f4f6;
    --danger-color: #ef4444;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --font-body: 'Inter', 'Manrope', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-display: 'Manrope', 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
}

/* 暗色主题 */
[data-theme="dark"] {
    --bg-primary: #0f0f14;
    --bg-secondary: #1a1a24;
    --bg-tertiary: #25252f;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: #2d2d38;
    --shadow-color: rgba(0,0,0,0.3);
    --accent-color: #a78bfa;
    --accent-hover: #8b5cf6;
    --sidebar-bg: #12121a;
    --sidebar-text: #d1d5db;
    --sidebar-active: rgba(167,139,250,0.2);
    --card-bg: #1a1a24;
    --input-bg: #25252f;
    --hover-bg: #25252f;
    --danger-color: #f87171;
    --success-color: #34d399;
    --warning-color: #fbbf24;
}

/* 全局字体应用 */
body {
    font-family: var(--font-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, .brand-title, .card-title, .page-title {
    font-family: var(--font-display);
    letter-spacing: -0.02em;
}

/* ===== 白天模式登录页：纯白精致风格 ===== */
[data-theme="light"] .app-container {
    background: linear-gradient(135deg, #ffffff 0%, #fafafa 50%, #f5f3ff 100%);
}

[data-theme="light"] .background-layer {
    display: none;
}

[data-theme="light"] .background-overlay {
    display: none;
}

[data-theme="light"] body {
    background: #ffffff;
    color: #1f2937;
}

[data-theme="light"] .status-bar {
    background: transparent;
}

[data-theme="light"] .close-btn,
[data-theme="light"] .settings-btn {
    background: rgba(243, 244, 246, 0.8);
    border: 1px solid #e5e7eb;
    color: #6b7280;
    backdrop-filter: blur(10px);
}

[data-theme="light"] .close-btn:hover,
[data-theme="light"] .settings-btn:hover {
    background: rgba(139, 92, 246, 0.1);
    border-color: #8b5cf6;
    color: #8b5cf6;
}

[data-theme="light"] .page-title {
    color: #1f2937;
    font-weight: 600;
}

/* 品牌区域 - 白天模式 */
[data-theme="light"] .brand-tag {
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid rgba(139, 92, 246, 0.2);
    color: #8b5cf6;
    font-weight: 600;
    letter-spacing: 0.02em;
}

[data-theme="light"] .brand-title {
    background: linear-gradient(135deg, #1f2937 0%, #8b5cf6 50%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    letter-spacing: -0.04em;
    font-weight: 800;
}

[data-theme="light"] .brand-subtitle {
    color: #6b7280;
    font-weight: 400;
}

[data-theme="light"] .tag {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #e5e7eb;
    color: #6b7280;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

[data-theme="light"] .tag:hover {
    border-color: #8b5cf6;
    color: #8b5cf6;
    background: rgba(139, 92, 246, 0.05);
}

/* 登录卡片 - 白天模式：纯白卡片 + 精致阴影 */
[data-theme="light"] .login-card {
    background: #ffffff;
    border: 1px solid #f0f0f5;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05),
                0 10px 30px -5px rgba(139,92,246,0.08),
                0 20px 60px -10px rgba(0,0,0,0.08);
}

[data-theme="light"] .brand-logo {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(139, 92, 246, 0.25);
}

[data-theme="light"] .card-title {
    color: #1f2937;
    font-weight: 700;
}

[data-theme="light"] .card-subtitle {
    color: #9ca3af;
}

/* 表单 - 白天模式 */
[data-theme="light"] .form-group label {
    color: #4b5563;
    font-weight: 500;
}

[data-theme="light"] .form-group input {
    background: #f9fafb;
    border: 1.5px solid #e5e7eb;
    color: #1f2937;
    transition: all 0.2s ease;
}

[data-theme="light"] .form-group input:focus {
    border-color: #8b5cf6;
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

[data-theme="light"] .form-group input::placeholder {
    color: #9ca3af;
}

[data-theme="light"] .toggle-password {
    color: #9ca3af;
}

[data-theme="light"] .toggle-password:hover {
    color: #8b5cf6;
}

/* 登录按钮 - 白天模式 */
[data-theme="light"] .login-btn {
    background: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(139, 92, 246, 0.3);
    font-weight: 600;
    letter-spacing: 0.05em;
}

[data-theme="light"] .login-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

/* 链接 - 白天模式 */
[data-theme="light"] .link {
    color: #8b5cf6;
    font-weight: 500;
}

[data-theme="light"] .link:hover {
    color: #7c3aed;
}

/* Toast - 白天模式 */
[data-theme="light"] .toast {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    color: #1f2937;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

[data-theme="light"] .toast.success {
    border-color: rgba(16, 185, 129, 0.4);
    color: #10b981;
}

[data-theme="light"] .toast.error {
    border-color: rgba(239, 68, 68, 0.4);
    color: #ef4444;
}

/* ===== 夜间模式登录页：保留深色背景图风格 ===== */
[data-theme="dark"] .app-container {
    background: var(--dark-bg, #0a0e14);
}

[data-theme="dark"] .background-layer {
    display: block;
    opacity: 1;
}

[data-theme="dark"] .background-overlay {
    display: block;
}

[data-theme="dark"] .brand-title {
    font-family: var(--font-display);
    font-weight: 800;
}

[data-theme="dark"] .login-card {
    border-color: rgba(139, 92, 246, 0.15);
}

/* ===== 全局文字美化 ===== */

/* 标题字重和字间距优化 */
.brand-title {
    font-family: var(--font-display);
    font-weight: 800;
    letter-spacing: -0.04em;
}

.card-title {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.page-title {
    font-family: var(--font-body);
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* 表单输入文字 */
.form-group input {
    font-family: var(--font-body);
    font-weight: 400;
}

/* 按钮文字 */
.login-btn {
    font-family: var(--font-display);
    font-weight: 600;
}

/* 标签文字 */
.tag {
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: 0.01em;
}

.brand-tag {
    font-family: var(--font-mono);
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* 版权页脚字体 */
.qluapro-copyright {
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

/* 主题切换按钮 */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

[data-theme="light"] .theme-icon-dark { display: none; }
[data-theme="dark"] .theme-icon-light { display: none; }

/* 暗色主题覆盖 */
[data-theme="dark"] body {
    background: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .admin-container,
[data-theme="dark"] .portal-container {
    background: var(--bg-primary);
}

[data-theme="dark"] .sidebar {
    background: var(--sidebar-bg) !important;
}

[data-theme="dark"] .admin-main,
[data-theme="dark"] .portal-main {
    background: var(--bg-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .page-header h2,
[data-theme="dark"] .page-header p {
    color: var(--text-primary);
}

[data-theme="dark"] .stat-card,
[data-theme="dark"] .checkin-card,
[data-theme="dark"] .balance-card,
[data-theme="dark"] .shop-card {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .user-table {
    background: var(--card-bg);
}

[data-theme="dark"] .user-table th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .user-table td {
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .user-table tbody tr:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: var(--input-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--text-muted);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus {
    border-color: var(--accent-color);
}

[data-theme="dark"] .modal {
    background: var(--card-bg);
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    border-color: var(--border-color);
}

[data-theme="dark"] .search-box,
[data-theme="dark"] .filter-select {
    background: var(--input-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .search-box input {
    background: transparent;
    color: var(--text-primary);
}

[data-theme="dark"] .chat-msg {
    border-color: var(--border-color);
}

[data-theme="dark"] .chat-input-area {
    background: var(--card-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .chat-msg-content {
    color: var(--text-primary);
}

[data-theme="dark"] .table-container {
    background: var(--card-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .btn-cancel {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .bg-card {
    background: var(--card-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .upload-area {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .toast {
    background: var(--card-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .detail-row {
    border-color: var(--border-color);
}

[data-theme="dark"] .detail-label {
    color: var(--text-secondary);
}

[data-theme="dark"] .detail-value {
    color: var(--text-primary);
}

[data-theme="dark"] .action-btn {
    border-color: var(--border-color);
}

[data-theme="dark"] .nav-item {
    color: var(--sidebar-text);
}

[data-theme="dark"] .nav-item:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] .nav-item.active {
    background: var(--sidebar-active);
    color: var(--accent-color);
}

[data-theme="dark"] .obsidian-display {
    color: #a78bfa !important;
}

[data-theme="dark"] .chat-msg-avatar.admin {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
}

[data-theme="dark"] .sidebar-footer {
    border-color: var(--border-color);
}

[data-theme="dark"] .admin-info p {
    color: var(--sidebar-text);
}

/* 版权页脚 */
.qluapro-copyright {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    padding: 4px 8px;
    font-size: 10px;
    color: var(--text-muted);
    background: transparent;
    pointer-events: none;
    z-index: 100;
    opacity: 0.6;
    transition: opacity 0.2s;
    user-select: none;
}

.qluapro-copyright:hover {
    opacity: 1;
}

[data-theme="dark"] .qluapro-copyright {
    color: #4b5563;
}