/* Qatar-Inspired HRMS Theme System */
/* Colors inspired by Qatar flag and modern design */

:root {
    /* Qatar Flag Colors */
    --qatar-maroon: #8D1538;
    --qatar-white: #FFFFFF;
    --qatar-maroon-light: #A52A5B;
    --qatar-maroon-dark: #6B0F2A;
    
    /* Modern Corporate Colors */
    --primary-blue: #06194d;
    --primary-blue-light: #3B82F6;
    --primary-blue-dark: #1E40AF;
    
    /* Neutral Colors */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Success, Warning, Error */
    --success: #059669;
    --warning: #D97706;
    --error: #DC2626;
    --info: #0EA5E9;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--qatar-maroon) 0%, var(--primary-blue) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--primary-blue-light) 0%, var(--qatar-maroon-light) 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    
    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Transitions */
    --transition-fast: all 0.15s ease-in-out;
    --transition-normal: all 0.3s ease-in-out;
    --transition-slow: all 0.5s ease-in-out;
}

/* Light Theme */
[data-theme="light"] {
    --body-bg: var(--gray-50);
    --body-color: var(--gray-900);
    --nav-bg: var(--gradient-primary);
    --nav-color: var(--qatar-white);
    --card-bg: var(--qatar-white);
    --card-bg-secondary: var(--gray-100);
    --card-border: var(--gray-200);
    --sidebar-bg: var(--qatar-white);
    --sidebar-border: var(--gray-200);
    --input-bg: var(--qatar-white);
    --input-border: var(--gray-300);
    --input-focus-border: var(--qatar-maroon);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --link-color: var(--qatar-maroon);
    --link-hover: var(--qatar-maroon-dark);
    --border-color: var(--gray-200);
    --divider-color: var(--gray-200);
    --hover-bg: var(--gray-100);
    --active-bg: var(--gray-200);
}

/* Dark Theme */
[data-theme="dark"] {
    --body-bg: var(--gray-900);
    --body-color: #E5E7EB; /* Lighter gray for better readability */
    --nav-bg: linear-gradient(135deg, var(--gray-800) 0%, var(--qatar-maroon-dark) 100%);
    --nav-color: #F9FAFB; /* Very light gray for nav text */
    --card-bg: var(--gray-800);
    --card-bg-secondary: var(--gray-700);
    --card-border: var(--gray-600); /* Lighter border for better contrast */
    --sidebar-bg: var(--gray-800);
    --sidebar-border: var(--gray-600);
    --input-bg: var(--gray-700);
    --input-border: var(--gray-500); /* Lighter input borders */
    --input-focus-border: var(--qatar-maroon-light);
    --text-primary: #F9FAFB; /* Very light for primary text */
    --text-secondary: #D1D5DB; /* Light gray for secondary text */
    --text-muted: #9CA3AF; /* Medium gray for muted text */
    --link-color: #F87171; /* Lighter red for better contrast */
    --link-hover: #FCA5A5; /* Even lighter red for hover */
    --border-color: var(--gray-600);
    --divider-color: var(--gray-600);
    --hover-bg: var(--gray-700);
    --active-bg: var(--gray-600);
}

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    background: var(--body-bg);
    color: var(--body-color);
    font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
    line-height: 1.6;
    transition: var(--transition-normal);
    margin: 0;
    padding: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
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: 1rem;
}

small {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Links */
a {
    color: var(--link-color);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

/* Navigation */
.navbar {
    background: var(--nav-bg) !important;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.375rem;
    color: var(--nav-color) !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand i {
    background: var(--qatar-white);
    color: var(--qatar-maroon);
    padding: 0.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.navbar-nav .nav-link {
    color: var(--nav-color) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-md);
    margin: 0 0.25rem;
    transition: var(--transition-fast);
    position: relative;
}

.navbar-nav .nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.navbar-nav .nav-link.active {
    background: rgba(255, 255, 255, 0.2);
}

/* Dropdown Menu */
.dropdown-menu {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.dropdown-item {
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-item:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.dropdown-item i {
    width: 1rem;
    text-align: center;
    color: var(--text-muted);
}

.dropdown-divider {
    border-color: var(--divider-color);
    margin: 0.5rem 0;
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    color: var(--body-color);
    transition: var(--transition-normal);
    overflow: hidden;
}

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

.card-header {
    background: var(--card-bg-secondary);
    border-bottom: 1px solid var(--card-border);
    padding: 1rem 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background: var(--card-bg-secondary);
    border-top: 1px solid var(--card-border);
    padding: 1rem 1.5rem;
}

/* Buttons */
.btn {
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    padding: 0.5rem 1rem;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--qatar-white);
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
    background: var(--card-bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.btn-success {
    background: var(--success);
    color: var(--qatar-white);
}

.btn-warning {
    background: var(--warning);
    color: var(--qatar-white);
}

.btn-danger {
    background: var(--error);
    color: var(--qatar-white);
}

.btn-info {
    background: var(--info);
    color: var(--qatar-white);
}

/* Forms */
.form-control,
.form-select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 0.75rem;
    transition: var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    background: var(--input-bg);
    border-color: var(--input-focus-border);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(141, 21, 56, 0.25);
    outline: none;
}

.form-label {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-text {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Theme Toggle */
.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--nav-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle i {
    transition: var(--transition-normal);
}

[data-theme="dark"] .theme-toggle i:before {
    content: "\f185"; /* sun icon */
}

[data-theme="light"] .theme-toggle i:before {
    content: "\f186"; /* moon icon */
}

/* Tables */
.table {
    background: var(--card-bg);
    color: var(--text-primary);
    border-color: var(--card-border);
}

.table th {
    background: var(--card-bg-secondary);
    color: var(--text-primary);
    border-color: var(--card-border);
    font-weight: 600;
}

.table td {
    border-color: var(--card-border);
    color: var(--text-secondary);
}

.table-striped tbody tr:nth-of-type(odd) {
    background: var(--card-bg-secondary);
}

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

/* Modals */
.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    color: var(--body-color);
}

.modal-header {
    border-bottom: 1px solid var(--card-border);
    background: var(--card-bg-secondary);
}

.modal-footer {
    border-top: 1px solid var(--card-border);
    background: var(--card-bg-secondary);
}

/* Alerts */
.alert {
    border-radius: var(--radius-md);
    border: none;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: linear-gradient(135deg, rgba(5, 150, 105, 0.1) 0%, rgba(5, 150, 105, 0.05) 100%);
    color: var(--success);
    border-left: 4px solid var(--success);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(217, 119, 6, 0.1) 0%, rgba(217, 119, 6, 0.05) 100%);
    color: var(--warning);
    border-left: 4px solid var(--warning);
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.1) 0%, rgba(220, 38, 38, 0.05) 100%);
    color: var(--error);
    border-left: 4px solid var(--error);
}

.alert-info {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(14, 165, 233, 0.05) 100%);
    color: var(--info);
    border-left: 4px solid var(--info);
}

/* Badges */
.badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-xl);
}

.badge.bg-primary {
    background: var(--qatar-maroon) !important;
}

.badge.bg-success {
    background: var(--success) !important;
}

.badge.bg-warning {
    background: var(--warning) !important;
}

.badge.bg-danger {
    background: var(--error) !important;
}

/* Progress */
.progress {
    background: var(--card-bg-secondary);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.progress-bar {
    background: var(--gradient-primary);
    transition: var(--transition-normal);
}

/* Breadcrumb */
.breadcrumb {
    background: var(--card-bg-secondary);
    padding: 0.75rem 1rem;
    margin-bottom: 0;
    border-radius: var(--radius-md);
}

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

.breadcrumb-item.active {
    color: var(--text-primary);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted);
}

/* Footer */
.bg-dark {
    background: var(--gradient-primary) !important;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.125rem;
    }
    
    .card {
        border-radius: var(--radius-md);
        margin-bottom: 1rem;
    }
    
    .btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
    
    /* Mobile navbar improvements */
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .navbar-nav .nav-link:last-child {
        border-bottom: none;
    }
    
    .dropdown-menu {
        border: none;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
    }
    
    [data-theme="dark"] .dropdown-menu {
        background: rgba(0, 0, 0, 0.95);
    }
    
    /* Mobile theme toggle */
    .theme-toggle {
        width: 35px;
        height: 35px;
    }
    
    /* Mobile-friendly forms */
    .form-control,
    .form-select {
        padding: 0.75rem;
        font-size: 1rem;
    }
    
    /* Mobile tables */
    .table-responsive {
        border: none;
    }
    
    .table th,
    .table td {
        padding: 0.5rem;
        font-size: 0.875rem;
    }
}

/* Tablet-specific styles */
@media (min-width: 768px) and (max-width: 1024px) {
    .container {
        max-width: 100%;
        padding: 0 1rem;
    }
    
    .card-columns {
        column-count: 2;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
}

/* Custom Utilities */
.text-qatar {
    color: var(--qatar-maroon) !important;
}

.bg-qatar {
    background: var(--qatar-maroon) !important;
}

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

.gradient-bg {
    background: var(--gradient-primary);
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass-effect {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Loading States */
.skeleton {
    background: linear-gradient(90deg, var(--card-bg-secondary) 25%, var(--hover-bg) 50%, var(--card-bg-secondary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --card-border: var(--gray-400);
        --input-border: var(--gray-500);
    }
    
    [data-theme="dark"] {
        --card-border: var(--gray-500);
        --input-border: var(--gray-400);
    }
}

/* Dark Theme Specific Overrides for Better Readability */
[data-theme="dark"] {
    /* Ensure all text elements have proper contrast */
    .card-title,
    .card-header,
    .table th,
    .nav-link,
    .dropdown-item,
    .form-label,
    .btn,
    .badge,
    .alert,
    h1, h2, h3, h4, h5, h6 {
        color: var(--text-primary) !important;
    }
    
    /* Secondary text with good contrast */
    .card-text,
    .table td,
    .text-muted,
    .small,
    small,
    .form-text {
        color: var(--text-secondary) !important;
    }
    
    /* Specific contrast fixes for cards */
    .card {
        background: var(--card-bg) !important;
        color: var(--text-primary) !important;
        border: 1px solid var(--card-border) !important;
    }
    
    .card-body {
        color: var(--text-secondary) !important;
    }
    
    .card-header {
        background: var(--card-bg-secondary) !important;
        color: var(--text-primary) !important;
        border-bottom: 1px solid var(--card-border) !important;
    }
    
    /* Table contrast improvements */
    .table {
        background: var(--card-bg) !important;
        color: var(--text-secondary) !important;
        --bs-table-bg: var(--card-bg);
        --bs-table-color: var(--text-secondary);
    }
    
    .table th {
        background: var(--card-bg-secondary) !important;
        color: var(--text-primary) !important;
        border-color: var(--card-border) !important;
    }
    
    .table td {
        color: var(--text-secondary) !important;
        border-color: var(--card-border) !important;
    }
    
    .table-striped tbody tr:nth-of-type(odd) {
        background: rgba(255, 255, 255, 0.05) !important;
    }
    
    .table-hover tbody tr:hover {
        background: var(--hover-bg) !important;
        color: var(--text-primary) !important;
    }
    
    /* Form elements contrast */
    .form-control,
    .form-select {
        background: var(--input-bg) !important;
        border: 1px solid var(--input-border) !important;
        color: var(--text-primary) !important;
    }
    
    .form-control:focus,
    .form-select:focus {
        background: var(--input-bg) !important;
        border-color: var(--input-focus-border) !important;
        color: var(--text-primary) !important;
        box-shadow: 0 0 0 0.2rem rgba(248, 113, 113, 0.25) !important;
    }
    
    .form-label {
        color: var(--text-primary) !important;
    }
    
    .form-text {
        color: var(--text-muted) !important;
    }
    
    /* Modal contrast */
    .modal-content {
        background: var(--card-bg) !important;
        color: var(--text-primary) !important;
        border: 1px solid var(--card-border) !important;
    }
    
    .modal-header {
        background: var(--card-bg-secondary) !important;
        color: var(--text-primary) !important;
        border-bottom: 1px solid var(--card-border) !important;
    }
    
    .modal-footer {
        background: var(--card-bg-secondary) !important;
        border-top: 1px solid var(--card-border) !important;
    }
    
    /* Button contrast improvements */
    .btn-secondary {
        background: var(--gray-600) !important;
        color: var(--text-primary) !important;
        border: 1px solid var(--gray-500) !important;
    }
    
    .btn-secondary:hover {
        background: var(--gray-500) !important;
        color: var(--text-primary) !important;
        border-color: var(--gray-400) !important;
    }
    
    /* Navigation dropdown improvements */
    .dropdown-menu {
        background: var(--card-bg) !important;
        border: 1px solid var(--card-border) !important;
        color: var(--text-primary) !important;
    }
    
    .dropdown-item {
        color: var(--text-primary) !important;
    }
    
    .dropdown-item:hover {
        background: var(--hover-bg) !important;
        color: var(--text-primary) !important;
    }
    
    /* Breadcrumb improvements */
    .breadcrumb {
        background: var(--card-bg-secondary) !important;
        color: var(--text-secondary) !important;
    }
    
    .breadcrumb-item {
        color: var(--text-secondary) !important;
    }
    
    .breadcrumb-item.active {
        color: var(--text-primary) !important;
    }
    
    /* Alert improvements */
    .alert {
        color: var(--text-primary) !important;
    }
    
    .alert-success {
        background: rgba(5, 150, 105, 0.2) !important;
        color: #6EE7B7 !important;
        border-left: 4px solid #10B981 !important;
    }
    
    .alert-warning {
        background: rgba(217, 119, 6, 0.2) !important;
        color: #FBBF24 !important;
        border-left: 4px solid #F59E0B !important;
    }
    
    .alert-danger {
        background: rgba(220, 38, 38, 0.2) !important;
        color: #F87171 !important;
        border-left: 4px solid #EF4444 !important;
    }
    
    .alert-info {
        background: rgba(14, 165, 233, 0.2) !important;
        color: #7DD3FC !important;
        border-left: 4px solid #0EA5E9 !important;
    }
    
    /* Badge improvements */
    .badge {
        color: var(--qatar-white) !important;
    }
    
    .badge.bg-secondary {
        background: var(--gray-600) !important;
        color: var(--text-primary) !important;
    }
    
    /* List group improvements */
    .list-group-item {
        background: var(--card-bg) !important;
        color: var(--text-secondary) !important;
        border: 1px solid var(--card-border) !important;
    }
    
    .list-group-item:hover {
        background: var(--hover-bg) !important;
        color: var(--text-primary) !important;
    }
}

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