/* =====================================================
   DASHBOARD DARKMODE SYNC WITH TTS INTERFACE
   Đồng bộ giao diện Header, Sidebar, Footer với TTS
   ===================================================== */

:root {
    /* TTS Color Palette - Áp dụng cho toàn dashboard */
    --page-bg: #0a0a0a;           /* Nền chính - đen thuần */
    --sidebar-bg: #0f0f0f;        /* Sidebar - đen nhạt hơn */
    --content-bg: #0f0f0f;        /* Content area */
    --text-color: #e5e5e5;        /* Text chính - trắng nhạt */
    --text-secondary: #888;       /* Text phụ - xám */
    --input-bg: #1a1a1a;          /* Input/Button background */
    --input-border: #2a2a2a;      /* Border nhẹ */
    --input-focus: #ffffff;       /* Focus state - trắng */
    --primary-color: #ffffff;     /* Accent chính - trắng */
    --primary-hover: #e5e5e5;     /* Hover state */
    --shadow: rgba(0, 0, 0, 0.5); /* Shadow đậm */
    --hover-bg: #1a1a1a;          /* Background khi hover */
    --border-color: #2a2a2a;      /* Border color */
}

html.dark {
    /* Giữ nguyên palette cho dark mode */
    --page-bg: #0a0a0a;
    --sidebar-bg: #0f0f0f;
    --content-bg: #0f0f0f;
    --text-color: #e5e5e5;
    --text-secondary: #888;
    --input-bg: #1a1a1a;
    --input-border: #2a2a2a;
    --input-focus: #ffffff;
    --primary-color: #ffffff;
    --primary-hover: #e5e5e5;
    --shadow: rgba(0, 0, 0, 0.5);
    --hover-bg: #1a1a1a;
    --border-color: #2a2a2a;
}

/* Light Mode - Tone sáng tương tự nhưng đảo ngược */
html:not(.dark) {
    --page-bg: #ffffff;
    --sidebar-bg: #f8f9fa;
    --content-bg: #ffffff;
    --text-color: #1a1a1a;
    --text-secondary: #666;
    --input-bg: #f1f3f5;
    --input-border: #dee2e6;
    --input-focus: #000000;
    --primary-color: #000000;
    --primary-hover: #333;
    --shadow: rgba(0, 0, 0, 0.1);
    --hover-bg: #f1f3f5;
    --border-color: #dee2e6;
}

/* =====================================================
   BODY & LAYOUT
   ===================================================== */
body {
    background-color: var(--page-bg) !important;
    color: var(--text-color) !important;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.dashboard-wrapper {
    background-color: var(--page-bg);
}

/* =====================================================
   SIDEBAR REDESIGN
   ===================================================== */
.sidebar {
    background-color: var(--sidebar-bg) !important;
    border-right: 1px solid var(--border-color) !important;
    box-shadow: none !important;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Sidebar Header */
.sidebar-header {
    background-color: var(--sidebar-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 20px;
}

.logo-text {
    color: var(--text-color) !important;
    font-weight: 700;
}

/* Menu Section */
.menu-title {
    color: var(--text-secondary) !important;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Menu Items */
.menu-item {
    color: var(--text-color) !important;
    background: transparent !important;
    border-radius: 8px;
    transition: all 0.2s ease;
    margin: 2px 12px;
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 500;
}

.menu-item:hover {
    background: var(--hover-bg) !important;
    color: var(--text-color) !important;
    transform: translateX(2px);
}

.menu-item.active {
    background: var(--input-bg) !important;
    color: var(--primary-color) !important;
    font-weight: 600;
    border-left: 3px solid var(--primary-color);
    margin-left: 12px;
    padding-left: 9px;
}

.menu-item i {
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.menu-item:hover i,
.menu-item.active i {
    color: var(--primary-color);
}

/* Submenu Items */
.submenu {
    background: transparent;
}

.submenu-item {
    color: var(--text-secondary) !important;
    background: transparent !important;
    padding: 8px 12px 8px 40px;
    margin: 2px 12px;
    border-radius: 6px;
    font-size: 12px;
    transition: all 0.2s ease;
}

.submenu-item:hover {
    background: var(--hover-bg) !important;
    color: var(--text-color) !important;
    transform: translateX(2px);
}

.submenu-item.active {
    background: var(--input-bg) !important;
    color: var(--primary-color) !important;
    font-weight: 600;
    border-left: 2px solid var(--primary-color);
    padding-left: 38px;
}

.submenu-item i {
    color: var(--text-secondary);
}

.submenu-item:hover i,
.submenu-item.active i {
    color: var(--primary-color);
}

/* Dropdown Arrow */
.dropdown-arrow {
    color: var(--text-secondary) !important;
}

.menu-item:hover .dropdown-arrow,
.menu-item.active .dropdown-arrow {
    color: var(--primary-color) !important;
}

/* Nested Submenu */
.nested-submenu .submenu-item {
    padding-left: 56px;
    font-size: 11px;
}

/* Scrollbar cho Sidebar */
.sidebar::-webkit-scrollbar {
    width: 5px;
}

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

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* =====================================================
   TOP HEADER
   ===================================================== */
.top-header {
    background-color: var(--content-bg) !important;
    border-bottom: 1px solid var(--border-color) !important;
    box-shadow: none !important;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* Search Box */
.search-box input {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    color: var(--text-color) !important;
    transition: all 0.2s ease;
}

.search-box input:focus {
    border-color: var(--primary-color) !important;
    background-color: var(--sidebar-bg) !important;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1) !important;
}

.search-box input::placeholder {
    color: var(--text-secondary) !important;
}

.search-box i {
    color: var(--text-secondary) !important;
}

/* Header Buttons */
.header-btn {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    color: var(--text-color) !important;
    transition: all 0.2s ease;
}

.header-btn:hover {
    background-color: var(--hover-bg) !important;
    border-color: var(--primary-color) !important;
    color: var(--primary-color) !important;
    transform: scale(1.05);
}

/* Theme Toggle Button - Đặc biệt */
.theme-toggle:hover {
    transform: rotate(180deg) scale(1.1) !important;
}

/* Notification Badge */
.notification-badge {
    background: var(--primary-color) !important;
    color: var(--page-bg) !important;
    font-weight: 700;
}

/* User Menu */
.user-menu {
    background-color: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    transition: all 0.2s ease;
}

.user-menu:hover {
    border-color: var(--primary-color) !important;
    background-color: var(--hover-bg) !important;
}

.user-name {
    color: var(--text-color) !important;
}

.user-role-badge {
    color: var(--text-secondary) !important;
}

.dropdown-icon {
    color: var(--text-secondary) !important;
}

/* User Avatar Placeholder */
.user-avatar-placeholder {
    background: var(--primary-color) !important;
    color: var(--page-bg) !important;
    font-weight: 700;
}

/* Login Button for Guest */
.login-btn {
    background: var(--primary-color) !important;
    color: var(--page-bg) !important;
    font-weight: 700;
    border: none !important;
}

.login-btn:hover {
    background: var(--primary-hover) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

/* Menu Toggle (Mobile) */
.menu-toggle {
    color: var(--text-color) !important;
    background: transparent !important;
}

.menu-toggle:hover {
    color: var(--primary-color) !important;
}

/* =====================================================
   NOTIFICATION DROPDOWN
   ===================================================== */
.dropdown-menu {
    background: var(--content-bg) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5) !important;
}

.dropdown-header {
    border-bottom: 1px solid var(--border-color) !important;
}

.dropdown-header h5 {
    color: var(--text-color) !important;
}

.mark-all-read {
    color: var(--primary-color) !important;
}

.mark-all-read:hover {
    text-decoration: underline;
}

.notification-item {
    border-bottom: 1px solid var(--border-color) !important;
    transition: background 0.2s ease;
}

.notification-item:hover {
    background: var(--hover-bg) !important;
}

.notification-item.unread {
    background: rgba(255, 255, 255, 0.05) !important;
}

.notification-content p {
    color: var(--text-color) !important;
}

.notification-content .time-ago {
    color: var(--text-secondary) !important;
}

.notification-empty {
    color: var(--text-secondary) !important;
}

.dropdown-footer {
    border-top: 1px solid var(--border-color) !important;
}

.dropdown-footer a {
    color: var(--primary-color) !important;
}

/* =====================================================
   FOOTER
   ===================================================== */
.compact-dashboard-footer {
    background-color: var(--content-bg) !important;
    border-top: 1px solid var(--border-color) !important;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.footer-left p {
    color: var(--text-secondary) !important;
}

.footer-left strong {
    color: var(--text-color) !important;
}

.footer-link {
    color: var(--text-secondary) !important;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--primary-color) !important;
}

.footer-divider {
    background-color: var(--border-color) !important;
}

.social-icon {
    color: var(--text-secondary) !important;
    transition: all 0.2s ease;
}

.social-icon:hover {
    color: var(--primary-color) !important;
    transform: scale(1.1);
}

/* =====================================================
   CONTENT AREA
   ===================================================== */
.content-area {
    background-color: var(--page-bg);
}

/* Main Content */
.main-content {
    background-color: var(--page-bg);
}

/* =====================================================
   SIDEBAR OVERLAY (Mobile)
   ===================================================== */
.sidebar-overlay {
    background: rgba(0, 0, 0, 0.8) !important;
    backdrop-filter: blur(4px);
}

/* =====================================================
   RESPONSIVE ADJUSTMENTS
   ===================================================== */
@media (max-width: 1024px) {
    .sidebar {
        box-shadow: 2px 0 20px rgba(0, 0, 0, 0.5) !important;
    }
}

@media (max-width: 768px) {
    .top-header {
        padding: 12px 16px;
    }
    
    .sidebar-header {
        padding: 16px;
    }
    
    .menu-item,
    .submenu-item {
        margin: 2px 8px;
    }
}

/* =====================================================
   SMOOTH TRANSITIONS
   ===================================================== */
* {
    transition-property: background-color, border-color, color, box-shadow;
    transition-duration: 0.3s;
    transition-timing-function: ease;
}

/* Ngoại lệ cho transform và opacity */
.menu-item,
.submenu-item,
.header-btn,
.user-menu,
.login-btn,
.footer-link,
.social-icon {
    transition: all 0.2s ease !important;
}

/* =====================================================
   MAINTENANCE BANNER (Nếu có)
   ===================================================== */
.maintenance-banner {
    background: rgba(251, 191, 36, 0.1) !important;
    border: 1px solid rgba(251, 191, 36, 0.3) !important;
}

.maintenance-banner-icon {
    color: #fbbf24 !important;
}

.maintenance-banner-title {
    color: #fbbf24 !important;
}

.maintenance-banner-content {
    color: var(--text-color) !important;
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */
.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
    color: var(--page-bg) !important;
}

.border-primary {
    border-color: var(--primary-color) !important;
}

/* =====================================================
   DARK MODE SPECIFIC ENHANCEMENTS
   ===================================================== */
html.dark .logo-icon {
    filter: brightness(1.1);
}

html.dark .user-avatar {
    border-color: var(--primary-color) !important;
}

/* =====================================================
   LIGHT MODE SPECIFIC ENHANCEMENTS
   ===================================================== */
html:not(.dark) .logo-icon {
    filter: brightness(0.9);
}

html:not(.dark) .user-avatar {
    border-color: var(--input-border) !important;
}

html:not(.dark) .sidebar {
    box-shadow: 1px 0 3px rgba(0, 0, 0, 0.05) !important;
}

html:not(.dark) .top-header {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05) !important;
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    .sidebar,
    .top-header,
    .compact-dashboard-footer {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
    }
}