/* ============================================
   GLOBAL RESPONSIVE & DARK MODE STYLES
   All Device Friendly - Seamless & Modern
   ============================================ */

/* ===== CSS VARIABLES - LIGHT MODE ===== */
:root {
    /* Colors - High Contrast for Readability */
    --primary-color: #4F46E5;
    --primary-hover: #4338CA;
    --primary-light: #818CF8;
    --primary-dark: #312E81;
    
    --success-color: #10B981;
    --success-hover: #059669;
    --success-light: #34D399;
    
    --danger-color: #EF4444;
    --danger-hover: #DC2626;
    --danger-light: #F87171;
    
    --warning-color: #F59E0B;
    --warning-hover: #D97706;
    --warning-light: #FBBF24;
    
    --info-color: #3B82F6;
    --info-hover: #2563EB;
    --info-light: #60A5FA;
    
    /* Text Colors - High Contrast */
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6B7280;
    --text-light: #9CA3AF;
    --text-white: #FFFFFF;
    
    /* Background Colors */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --bg-card: #FFFFFF;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* Border Colors */
    --border-color: #E5E7EB;
    --border-light: #F3F4F6;
    --border-dark: #D1D5DB;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== CSS VARIABLES - DARK MODE ===== */
body.dark {
    /* Text Colors - High Contrast for Dark Mode */
    --text-primary: #F9FAFB;
    --text-secondary: #E5E7EB;
    --text-muted: #9CA3AF;
    --text-light: #6B7280;
    --text-white: #FFFFFF;
    
    /* Background Colors - True Dark Mode */
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --bg-card: #1F2937;
    --bg-overlay: rgba(0, 0, 0, 0.8);
    
    /* Border Colors */
    --border-color: #374151;
    --border-light: #4B5563;
    --border-dark: #1F2937;
    
    /* Shadows - Lighter for dark mode */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    
    /* Force dark background for all content areas */
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
}

/* Ensure all content areas use dark background */
body.dark .main-wrapper,
body.dark .main-panel,
body.dark .container,
body.dark .container-fluid {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
}

/* Ensure all cards use dark background */
body.dark .card,
body.dark .card-header,
body.dark .card-body,
body.dark .card-footer {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

/* Ensure all tables use dark background */
body.dark .data-table,
body.dark .table,
body.dark .data-table tbody tr,
body.dark .data-table td {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
}

body.dark .data-table thead th {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover)) !important;
    color: white !important;
}

/* Ensure all forms use dark background */
body.dark .form-control,
body.dark .form-select,
body.dark .form-input,
body.dark input,
body.dark select,
body.dark textarea {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

body.dark .form-control:focus,
body.dark .form-select:focus,
body.dark .form-input:focus {
    background-color: var(--bg-card) !important;
    border-color: var(--primary-color) !important;
    color: var(--text-primary) !important;
}

/* Ensure all modals and dialogs use dark background */
body.dark .modal,
body.dark .modal-content,
body.dark .modal-header,
body.dark .modal-body,
body.dark .modal-footer,
body.dark .confirm-dialog,
body.dark .confirm-header,
body.dark .confirm-body,
body.dark .confirm-footer {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

/* Ensure all action grids and quick actions use dark background */
body.dark .action-grid a,
body.dark .quick-actions .action-grid a {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

/* Ensure all stat cards use dark background */
body.dark .stat-card,
body.dark .stat-card .info h4,
body.dark .stat-card .info p {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

/* Ensure all search and filter boxes use dark background */
body.dark .search-box input,
body.dark .filter-box select {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

/* Ensure all toast notifications use dark background */
body.dark .toast {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

/* Ensure all alerts use dark background with proper contrast */
body.dark .alert {
    background-color: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

/* Ensure all page headers use dark background */
body.dark .page-header {
    background-color: transparent !important;
    border-bottom-color: var(--border-color) !important;
}

body.dark .page-header h1,
body.dark .page-header h2,
body.dark .page-header h3 {
    color: var(--text-primary) !important;
}

/* ===== GLOBAL RESET & BASE STYLES ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-base), color var(--transition-base);
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* ===== BUTTONS - HIGH CONTRAST & CLEAR ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    min-height: 44px; /* Touch-friendly */
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:active {
    transform: scale(0.98);
}

/* Primary Button */
.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: var(--text-white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

body.dark .btn-primary {
    background-color: var(--primary-color);
    color: var(--text-white);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

body.dark .btn-primary:hover {
    background-color: var(--primary-light);
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.5);
}

/* Success Button */
.btn-success {
    background-color: var(--success-color);
    color: var(--text-white);
    border-color: var(--success-color);
}

.btn-success:hover {
    background-color: var(--success-hover);
    border-color: var(--success-hover);
    color: var(--text-white);
}

/* Danger Button */
.btn-danger {
    background-color: var(--danger-color);
    color: var(--text-white);
    border-color: var(--danger-color);
}

.btn-danger:hover {
    background-color: var(--danger-hover);
    border-color: var(--danger-hover);
    color: var(--text-white);
}

/* Warning Button */
.btn-warning {
    background-color: var(--warning-color);
    color: var(--text-primary);
    border-color: var(--warning-color);
}

.btn-warning:hover {
    background-color: var(--warning-hover);
    border-color: var(--warning-hover);
    color: var(--text-primary);
}

/* Info Button */
.btn-info {
    background-color: var(--info-color);
    color: var(--text-white);
    border-color: var(--info-color);
}

.btn-info:hover {
    background-color: var(--info-hover);
    border-color: var(--info-hover);
    color: var(--text-white);
}

/* Secondary/Outline Button */
.btn-secondary,
.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover,
.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
}

body.dark .btn-secondary,
body.dark .btn-outline {
    color: var(--primary-light);
    border-color: var(--primary-color);
}

body.dark .btn-secondary:hover,
body.dark .btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--text-white);
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    min-height: 36px;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    min-height: 52px;
}

/* Disabled Button */
.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ===== CARDS ===== */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

body.dark .card {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.card-header h2,
.card-header h3 {
    color: var(--text-primary);
    margin-bottom: 0;
}

.card-body {
    color: var(--text-secondary);
}

.card-footer {
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-control,
.form-select,
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    min-height: 44px; /* Touch-friendly */
    -webkit-appearance: none;
    appearance: none;
}

.form-control:focus,
.form-select:focus,
.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

body.dark .form-control,
body.dark .form-select,
body.dark .form-input {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

body.dark .form-control:focus,
body.dark .form-select:focus,
body.dark .form-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* ===== TABLES ===== */
.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.table,
.data-table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--bg-card);
}

.table thead,
.data-table thead {
    background-color: var(--bg-tertiary);
}

body.dark .table thead,
body.dark .data-table thead {
    background-color: var(--bg-secondary);
}

.table th,
.table td,
.data-table th,
.data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.table th,
.data-table th {
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table tbody tr:hover,
.data-table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

body.dark .table tbody tr:hover,
body.dark .data-table tbody tr:hover {
    background-color: var(--bg-secondary);
}

/* ===== ALERTS ===== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
    color: var(--success-hover);
}

body.dark .alert-success {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success-light);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: var(--danger-color);
    color: var(--danger-hover);
}

body.dark .alert-danger {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-light);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-color: var(--warning-color);
    color: var(--warning-hover);
}

body.dark .alert-warning {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--warning-light);
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: var(--info-color);
    color: var(--info-hover);
}

body.dark .alert-info {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--info-light);
}

/* ===== BADGES ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.badge-primary {
    background-color: var(--primary-color);
    color: var(--text-white);
}

.badge-success {
    background-color: var(--success-color);
    color: var(--text-white);
}

.badge-danger {
    background-color: var(--danger-color);
    color: var(--text-white);
}

.badge-warning {
    background-color: var(--warning-color);
    color: var(--text-primary);
}

.badge-info {
    background-color: var(--info-color);
    color: var(--text-white);
}

/* ===== CONTAINERS ===== */
.container,
.container-fluid {
    width: 100%;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
    margin-left: auto;
    margin-right: auto;
}

.container {
    max-width: 1200px;
}

.main-panel {
    padding: var(--spacing-xl);
    min-height: calc(100vh - 80px);
}

/* ===== RESPONSIVE DESIGN ===== */

/* Mobile First - Base Styles */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .container,
    .container-fluid {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
    
    .main-panel {
        padding: var(--spacing-md);
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    h4 { font-size: 1.125rem; }
    
    .card {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-md);
    }
    
    .btn {
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }
    
    .btn:last-child {
        margin-bottom: 0;
    }
    
    .table-wrapper {
        border-radius: var(--radius-md);
    }
    
    .table,
    .data-table {
        font-size: 0.875rem;
        min-width: 600px;
    }
    
    .table th,
    .table td,
    .data-table th,
    .data-table td {
        padding: 0.5rem 0.75rem;
    }
    
    .form-control,
    .form-select,
    .form-input {
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 960px;
    }
    
    .main-panel {
        padding: var(--spacing-lg);
    }
}

/* Desktop */
@media (min-width: 1025px) {
    .container {
        max-width: 1200px;
    }
}

/* Extra Small Mobile */
@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }
    
    .table,
    .data-table {
        font-size: 0.75rem;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-white { color: var(--text-white); }

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-card { background-color: var(--bg-card); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .btn,
    .card,
    .form-control {
        border-width: 2px;
    }
    
    .btn-primary {
        border-width: 3px;
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .sidebar,
    .main-header,
    .btn,
    .alert {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #000 !important;
        break-inside: avoid;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}