/* ========================================
   dWakala System - Main Styles
   ======================================== */

/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --primary-color: #ff5b74;
    --primary-dark: #e04a62;
    --primary-light: #ff7a8a;
    --secondary-color: #60b8c3;
    --secondary-dark: #4a9ba6;
    --secondary-light: #7ac8d1;
    
    /* Gradients */
    --primary-gradient: linear-gradient(135deg, #ff5b74 0%, #60b8c3 100%);
    --secondary-gradient: linear-gradient(135deg, #60b8c3 0%, #ff5b74 100%);
    --glass-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    --sidebar-gradient: linear-gradient(180deg, #ff5b74 0%, #60b8c3 100%);
    --nav-hover-gradient: linear-gradient(135deg, rgba(255, 91, 116, 0.15) 0%, rgba(96, 184, 195, 0.15) 100%);
    --nav-active-gradient: linear-gradient(135deg, #ff5b74 0%, #60b8c3 100%);
    
    /* Neutral Colors */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --gray: #6c757d;
    --dark-gray: #343a40;
    --black: #000000;
    
    /* Status Colors */
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;
    
    /* Shadows */
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --sidebar-shadow: 0 25px 50px -12px rgba(255, 91, 116, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Sidebar Specific */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --nav-item-height: 48px;
    --nav-icon-size: 20px;
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--light-gray);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

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

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

a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

/* ===== Layout Components ===== */

/* Main Container */
.main-container {
    display: flex;
    min-height: 100vh;
}

/* ===== Modern Sidebar Design with Brand Colors ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-gradient);
    box-shadow: var(--sidebar-shadow);
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    z-index: 1000;
    transition: all var(--transition);
    overflow-y: auto;
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

.sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

/* Sidebar Header */
.sidebar-header {
    padding: var(--spacing-xl);
    background: var(--glass-gradient);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.sidebar-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
    opacity: 0.1;
    z-index: -1;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.sidebar-brand h3 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.5px;
}

.sidebar-brand .brand-icon {
    font-size: var(--font-size-2xl);
    color: var(--white);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Sidebar Navigation */
.sidebar-nav {
    padding: var(--spacing-lg) 0;
}

.nav-section {
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.nav-section:last-child {
    margin-bottom: 0;
}

.nav-section-title {
    padding: 0 var(--spacing-xl) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 1px;
    position: relative;
}

.nav-section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: var(--spacing-xl);
    right: var(--spacing-xl);
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.4) 50%, transparent 100%);
}

.nav-item {
    position: relative;
    margin: 0 var(--spacing-md);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    transition: all var(--transition);
    border-radius: var(--border-radius-lg);
    position: relative;
    overflow: hidden;
    height: var(--nav-item-height);
    text-decoration: none;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--nav-hover-gradient);
    opacity: 0;
    transition: opacity var(--transition);
    border-radius: var(--border-radius-lg);
}

.nav-link:hover {
    color: var(--white);
    transform: translateX(4px);
    text-decoration: none;
}

.nav-link:hover::before {
    opacity: 1;
}

.nav-link.active {
    background: var(--nav-active-gradient);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 91, 116, 0.4);
    transform: translateX(4px);
}

.nav-link.active::before {
    opacity: 0;
}

.nav-link .nav-icon {
    width: var(--nav-icon-size);
    height: var(--nav-icon-size);
    margin-right: var(--spacing-md);
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    transition: transform var(--transition);
}

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

.nav-link .nav-text {
    flex: 1;
    font-weight: 500;
    position: relative;
    z-index: 1;
    transition: transform var(--transition);
}

.nav-link:hover .nav-text {
    transform: translateX(2px);
}

.nav-link .nav-badge {
    background: var(--danger);
    color: var(--white);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: var(--font-size-xs);
    font-weight: 700;
    position: relative;
    z-index: 1;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-3px); }
    60% { transform: translateY(-2px); }
}

/* Dropdown Navigation */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    cursor: pointer;
}

.nav-dropdown-toggle::after {
    content: '\f107';
    font-family: 'bootstrap-icons';
    margin-left: auto;
    transition: transform var(--transition);
    position: relative;
    z-index: 1;
    font-size: var(--font-size-sm);
}

.nav-dropdown.active .nav-dropdown-toggle::after {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    margin: var(--spacing-sm) 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-dropdown.active .nav-dropdown-menu {
    max-height: 300px;
    padding: var(--spacing-sm) 0;
}

.nav-dropdown-item {
    padding: var(--spacing-sm) var(--spacing-xl) var(--spacing-sm) calc(var(--spacing-xl) + 28px);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition);
    text-decoration: none;
    display: block;
    position: relative;
}

.nav-dropdown-item::before {
    content: '';
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background: var(--white);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition);
}

.nav-dropdown-item:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    text-decoration: none;
    transform: translateX(4px);
}

.nav-dropdown-item:hover::before {
    opacity: 1;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition);
}

.main-content.expanded {
    margin-left: 0;
}

/* Top Navigation */
.top-nav {
    background: var(--white);
    box-shadow: var(--shadow);
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 999;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.top-nav-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.sidebar-toggle {
    background: var(--primary-gradient);
    border: none;
    font-size: var(--font-size-lg);
    color: var(--white);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.sidebar-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--gray);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
    content: '\f285';
    font-family: 'bootstrap-icons';
    margin-left: var(--spacing-sm);
    color: var(--gray);
}

.top-nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Header Dwakala Selector */
.top-nav .dropdown .btn-outline-secondary {
    border-color: #6c757d;
    color: #6c757d;
    background-color: transparent;
    font-size: 0.875rem;
    padding: 0.375rem 0.75rem;
}

.top-nav .dropdown .btn-outline-secondary:hover {
    background-color: #6c757d;
    border-color: #6c757d;
    color: white;
}

.top-nav .dropdown .dropdown-menu {
    min-width: 250px;
    border: 1px solid #dee2e6;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.top-nav .dropdown .dropdown-item.active {
    background-color: #e3f2fd;
    color: #1976d2;
    font-weight: 500;
}

.top-nav .dropdown .dropdown-item:hover {
    background-color: #f8f9fa;
}

.top-nav .dropdown .dropdown-header {
    font-weight: 600;
    color: #495057;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
}

.top-nav .dropdown .dropdown-divider {
    margin: 0.5rem 0;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition);
}

.user-menu:hover {
    background: var(--light-gray);
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-md);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    color: var(--dark-gray);
    font-size: var(--font-size-sm);
}

.user-role {
    font-size: var(--font-size-xs);
    color: var(--gray);
    text-transform: capitalize;
}

/* Content Wrapper */
.content-wrapper {
    padding: var(--spacing-xl);
}

.page-header {
    margin-bottom: var(--spacing-xl);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    color: var(--gray);
    font-size: var(--font-size-lg);
    margin: 0;
}

.page-actions {
    margin-bottom: var(--spacing-xl);
}

.main-content-area {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    padding: var(--spacing-xl);
    min-height: 500px;
}

/* ===== Cards ===== */
.card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: none;
    overflow: hidden;
    transition: all var(--transition);
}

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

.card-header {
    background: var(--white);
    border-bottom: 1px solid var(--light-gray);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--dark-gray);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-body {
    padding: var(--spacing-xl);
}

.card-footer {
    background: var(--light-gray);
    border-top: 1px solid var(--light-gray);
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

/* ===== Buttons ===== */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

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

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

.btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-1px);
}

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

.btn-warning {
    background: var(--warning);
    color: var(--dark-gray);
}

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

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

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

.form-label {
    display: block;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
    background-color: var(--white);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 91, 116, 0.1);
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-control.is-valid {
    border-color: var(--success);
}

.form-text {
    font-size: var(--font-size-xs);
    color: var(--gray);
    margin-top: var(--spacing-xs);
}

.invalid-feedback {
    display: block;
    color: var(--danger);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

/* ===== Tables ===== */
.table-container {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.table {
    width: 100%;
    margin-bottom: 0;
    border-collapse: collapse;
}

.table th {
    background-color: var(--light-gray);
    color: var(--dark-gray);
    font-weight: 700;
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 2px solid var(--light-gray);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table td {
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--light-gray);
    vertical-align: middle;
}

.table tbody tr:hover {
    background-color: var(--light-gray);
}

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

/* ===== Status Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success);
}

.badge-warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning);
}

.badge-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

.badge-info {
    background-color: rgba(23, 162, 184, 0.1);
    color: var(--info);
}

.badge-primary {
    background-color: rgba(255, 91, 116, 0.1);
    color: var(--primary-color);
}

/* ===== Dashboard Cards ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    border-left: 4px solid var(--primary-color);
}

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

.stat-card.success {
    border-left-color: var(--success);
}

.stat-card.warning {
    border-left-color: var(--warning);
}

.stat-card.danger {
    border-left-color: var(--danger);
}

.stat-card.info {
    border-left-color: var(--info);
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.stat-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--white);
}

.stat-card .stat-icon {
    background: var(--primary-gradient);
}

.stat-card.success .stat-icon {
    background: linear-gradient(135deg, var(--success) 0%, #34ce57 100%);
}

.stat-card.warning .stat-icon {
    background: linear-gradient(135deg, var(--warning) 0%, #ffdb4d 100%);
}

.stat-card.danger .stat-icon {
    background: linear-gradient(135deg, var(--danger) 0%, #e74c3c 100%);
}

.stat-card.info .stat-icon {
    background: linear-gradient(135deg, var(--info) 0%, #5bc0de 100%);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.stat-change {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.stat-change.positive {
    color: var(--success);
}

.stat-change.negative {
    color: var(--danger);
}

/* ===== Charts & Graphs ===== */
.chart-container {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-xl);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.chart-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--dark-gray);
    margin: 0;
}

/* ===== Alerts & Notifications ===== */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    border: none;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success);
    border-left: 4px solid var(--success);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--warning);
    border-left: 4px solid var(--warning);
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger);
    border-left: 4px solid var(--danger);
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    color: var(--info);
    border-left: 4px solid var(--info);
}

.alert-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

/* ===== Modals ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1050;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-dialog {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--dark-gray);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--gray);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--light-gray);
    color: var(--danger);
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-footer {
    padding: var(--spacing-xl);
    border-top: 1px solid var(--light-gray);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* ===== Loading States ===== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Responsive Design ===== */
@media (max-width: 1200px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        max-width: 320px;
    }
    
    .content-wrapper {
        padding: var(--spacing-lg);
    }
    
    .page-title {
        font-size: var(--font-size-2xl);
    }
    
    .page-actions {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .top-nav {
        padding: var(--spacing-md);
    }
    
    .user-info {
        display: none;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    .modal-dialog {
        width: 95%;
        margin: var(--spacing-md);
    }
}

@media (max-width: 576px) {
    :root {
        --font-size-base: 0.875rem;
    }
    
    .card-body {
        padding: var(--spacing-lg);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .page-title {
        font-size: var(--font-size-2xl);
    }
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-danger { color: var(--danger) !important; }
.text-info { color: var(--info) !important; }
.text-gray { color: var(--gray) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }
.bg-success { background-color: var(--success) !important; }
.bg-warning { background-color: var(--warning) !important; }
.bg-danger { background-color: var(--danger) !important; }
.bg-info { background-color: var(--info) !important; }

.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }

.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-end { justify-content: flex-end !important; }

.align-items-center { align-items: center !important; }
.align-items-start { align-items: flex-start !important; }
.align-items-end { align-items: flex-end !important; }

.flex-column { flex-direction: column !important; }
.flex-row { flex-direction: row !important; }

.w-100 { width: 100% !important; }
.h-100 { height: 100% !important; }

.m-0 { margin: 0 !important; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.ml-0 { margin-left: 0 !important; }
.mr-0 { margin-right: 0 !important; }

.p-0 { padding: 0 !important; }
.pt-0 { padding-top: 0 !important; }
.pb-0 { padding-bottom: 0 !important; }
.pl-0 { padding-left: 0 !important; }
.pr-0 { padding-right: 0 !important; }

.rounded { border-radius: var(--border-radius) !important; }
.rounded-lg { border-radius: var(--border-radius-lg) !important; }

.shadow { box-shadow: var(--shadow) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

/* ===== Print Styles ===== */
@media print {
    .sidebar,
    .top-nav,
    .page-actions,
    .btn {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid var(--gray) !important;
    }
}