/**
 * Modern Theme for BigData System
 * Features: Draggable menus, modern colors, enhanced UI
 */

:root {
    /* Modern Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #ffa726 0%, #fb8c00 100%);
    --danger-gradient: linear-gradient(135deg, #ef5350 0%, #e53935 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    
    /* Solid Colors */
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --success-color: #4facfe;
    --warning-color: #ffa726;
    --danger-color: #ef5350;
    --info-color: #26c6da;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #edf2f7;
    --bg-dark: #1a202c;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Text Colors */
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-light: #a0aec0;
    --text-white: #ffffff;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Global Enhancements */
body {
    font-family: 'Inter', 'Kanit', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Enhanced Main Header */
.main-header {
    background: var(--bg-gradient) !important;
    border-bottom: none !important;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.main-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
    animation: headerAnimation 15s ease-in-out infinite;
}

@keyframes headerAnimation {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.3; }
    50% { transform: scale(1.1) rotate(2deg); opacity: 0.5; }
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    transition: all var(--transition-fast);
    border-radius: var(--radius-md);
    margin: 0 var(--space-1);
    position: relative;
    z-index: 10;
}

.navbar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.2) !important;
    color: white !important;
    transform: translateY(-1px);
}

/* Enhanced Sidebar */
.main-sidebar {
    background: var(--bg-primary) !important;
    box-shadow: var(--shadow-lg);
    border-right: 1px solid var(--bg-tertiary);
    transition: all var(--transition-normal);
}

.sidebar-dark-primary .nav-sidebar > .nav-item > .nav-link {
    color: var(--text-secondary) !important;
    border-radius: var(--radius-lg);
    margin: var(--space-1) var(--space-3);
    padding: var(--space-3) var(--space-4);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.sidebar-dark-primary .nav-sidebar > .nav-item > .nav-link:hover {
    background: var(--primary-gradient) !important;
    color: white !important;
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.sidebar-dark-primary .nav-sidebar > .nav-item > .nav-link.active {
    background: var(--primary-gradient) !important;
    color: white !important;
    box-shadow: var(--shadow-md);
}

.nav-sidebar .nav-icon {
    margin-right: var(--space-3);
    width: 20px;
    text-align: center;
    transition: all var(--transition-fast);
}

.nav-sidebar .nav-link:hover .nav-icon {
    transform: scale(1.1);
}

/* Draggable Menu System */
.draggable-menu {
    position: fixed;
    top: 50%;
    right: var(--space-6);
    transform: translateY(-50%);
    z-index: 1000;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-4);
    cursor: move;
    user-select: none;
    border: 1px solid var(--bg-tertiary);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    min-width: 200px;
}

.draggable-menu.dragging {
    opacity: 0.8;
    transform: translateY(-50%) rotate(2deg);
    box-shadow: var(--shadow-2xl);
}

.menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--bg-tertiary);
}

.menu-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.menu-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.menu-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--primary-color);
}

.menu-content {
    transition: all var(--transition-normal);
    overflow: hidden;
}

.menu-content.collapsed {
    max-height: 0;
    opacity: 0;
}

.menu-content.expanded {
    max-height: 500px;
    opacity: 1;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    margin: var(--space-1) 0;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
}

.menu-item:hover {
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    transform: translateX(3px);
}

.menu-item i {
    width: 16px;
    text-align: center;
}

/* Enhanced Cards */
.card {
    border: 1px solid var(--bg-tertiary) !important;
    border-radius: var(--radius-xl) !important;
    box-shadow: var(--shadow-sm) !important;
    transition: all var(--transition-normal);
    overflow: hidden;
    background: var(--bg-primary) !important;
}

.card:hover {
    box-shadow: var(--shadow-lg) !important;
    transform: translateY(-2px);
}

.card-header {
    background: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--bg-tertiary) !important;
    padding: var(--space-5) var(--space-6) !important;
    font-weight: 600;
    color: var(--text-primary);
    position: relative;
}

.card-header::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
}

.card-body {
    padding: var(--space-6) !important;
}

.card-title {
    color: var(--text-primary) !important;
    font-weight: 600;
    margin-bottom: var(--space-3);
}

/* Enhanced Buttons */
.btn {
    border-radius: var(--radius-lg) !important;
    font-weight: 500;
    padding: var(--space-3) var(--space-5);
    transition: all var(--transition-fast);
    border: none !important;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    background: var(--primary-gradient) !important;
    color: white !important;
}

.btn-secondary {
    background: var(--secondary-gradient) !important;
    color: white !important;
}

.btn-success {
    background: var(--success-gradient) !important;
    color: white !important;
}

.btn-warning {
    background: var(--warning-gradient) !important;
    color: white !important;
}

.btn-danger {
    background: var(--danger-gradient) !important;
    color: white !important;
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #00acc1 100%) !important;
    color: white !important;
}

/* Enhanced Tables */
.table {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--bg-tertiary);
}

.table thead th {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    font-weight: 600;
    border-bottom: 2px solid var(--bg-tertiary) !important;
    padding: var(--space-4) var(--space-5);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody td {
    padding: var(--space-4) var(--space-5);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--bg-tertiary) !important;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: var(--bg-secondary) !important;
}

.table tbody tr:last-child td {
    border-bottom: none !important;
}

/* Enhanced Progress Bars */
.progress {
    height: 10px !important;
    background: var(--bg-tertiary) !important;
    border-radius: var(--radius-full) !important;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    background: var(--primary-gradient) !important;
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Enhanced Alerts */
.alert {
    border-radius: var(--radius-lg) !important;
    border: none !important;
    padding: var(--space-4) var(--space-5);
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-sm);
    font-weight: 500;
}

.alert-success {
    background: rgba(79, 172, 254, 0.1) !important;
    color: var(--success-color) !important;
}

.alert-warning {
    background: rgba(255, 167, 38, 0.1) !important;
    color: var(--warning-color) !important;
}

.alert-danger {
    background: rgba(239, 83, 80, 0.1) !important;
    color: var(--danger-color) !important;
}

.alert-info {
    background: rgba(38, 198, 218, 0.1) !important;
    color: var(--info-color) !important;
}

/* Enhanced Content Wrapper */
.content-wrapper {
    background: var(--bg-secondary) !important;
    min-height: 100vh;
    padding: var(--space-6);
}

.content-header {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--bg-tertiary);
}

.content-header h1,
.content-header h2,
.content-header h3 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

/* Enhanced Forms */
.form-control {
    border: 2px solid var(--bg-tertiary) !important;
    border-radius: var(--radius-lg) !important;
    padding: var(--space-3) var(--space-4);
    transition: all var(--transition-fast);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-control:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1) !important;
    background: var(--bg-primary);
}

.form-group label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: var(--space-2);
}

/* Responsive Enhancements */
@media (max-width: 768px) {
    .draggable-menu {
        position: fixed;
        bottom: var(--space-4);
        right: var(--space-4);
        top: auto;
        transform: none;
    }
    
    .content-wrapper {
        padding: var(--space-4);
    }
    
    .content-header {
        padding: var(--space-4);
    }
    
    .card-body {
        padding: var(--space-4) !important;
    }
}

/* Loading Animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--bg-tertiary);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a202c;
        --bg-secondary: #2d3748;
        --bg-tertiary: #4a5568;
        --text-primary: #f7fafc;
        --text-secondary: #e2e8f0;
        --text-muted: #a0aec0;
    }
    
    .main-sidebar {
        background: var(--bg-primary) !important;
    }
    
    .draggable-menu {
        background: rgba(26, 32, 44, 0.95) !important;
        border-color: var(--bg-tertiary);
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-gradient);
}

/* Utility Classes */
.glassmorphism {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}