/* ===============================================
   Carpool System - Modern Responsive Stylesheet
   =============================================== */

/* --- CSS Variables for Easy Theming --- */
:root {
    /* Primary Colors */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --primary-dark: #1e40af;
    
    /* Secondary Colors */
    --secondary-color: #10b981;
    --secondary-hover: #059669;
    --secondary-light: #d1fae5;
    
    /* Accent Colors */
    --accent-color: #f59e0b;
    --accent-hover: #d97706;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* 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;
    
    /* UI Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --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);
    
    /* Layout */
    --header-height: 70px;
    --sidebar-width: 420px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

/* --- Global Styles --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

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

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

/* --- Header --- */
header {
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-lg);
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.3));
}

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

nav a {
    position: relative;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    transition: var(--transition);
}

nav a:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

nav a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px 3px 0 0;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--border-radius);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

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

.user-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.user-org {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* --- Language Switcher --- */
.lang-switcher {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--gray-100);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
}

.lang-btn {
    padding: 0.4rem 0.8rem;
    border: none;
    background: transparent;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    color: var(--text-secondary);
}

.lang-btn:hover {
    background: var(--gray-200);
}

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

/* --- Mobile Menu Toggle --- */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
    padding: var(--spacing-sm);
}

/* --- Main Container --- */
.container {
    display: flex;
    height: calc(100vh - var(--header-height));
    overflow: hidden;
}

/* --- Map --- */
#map {
    flex: 1;
    position: relative;
    background: var(--gray-100);
}

.map-controls {
    position: absolute;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    z-index: 100;
}

.map-btn {
    background: white;
    border: none;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.2rem;
}

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

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: var(--gray-100);
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* --- Form Container --- */
.form-container {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(to bottom, var(--bg-primary), var(--gray-50));
}

.form-container h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
}

/* --- Direction Tabs --- */
.direction-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    background: var(--gray-100);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
}

.tab-btn {
    padding: var(--spacing-md);
    border: none;
    background: transparent;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    color: var(--text-secondary);
}

.tab-btn:hover {
    background: var(--gray-200);
}

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

/* --- Form Inputs --- */
form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

label {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    display: block;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
input[type="number"],
input[type="datetime-local"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg-primary);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

input:read-only {
    background: var(--gray-50);
    cursor: not-allowed;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

/* --- Buttons --- */
button,
.button {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    background: var(--primary-color);
    color: white;
}

button:hover,
.button:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

button:active,
.button:active {
    transform: translateY(0);
}

button.secondary,
.button.secondary {
    background: var(--gray-200);
    color: var(--text-primary);
}

button.secondary:hover,
.button.secondary:hover {
    background: var(--gray-300);
}

button.success {
    background: var(--success);
}

button.warning {
    background: var(--warning);
}

button.error {
    background: var(--error);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* --- Filter Container --- */
.filter-container {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--gray-50);
}

.filter-container h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

#ride-filter {
    width: 100%;
}

/* --- Ride Cards --- */
.rides-list {
    padding: var(--spacing-lg);
}

.ride-card {
    background: white;
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    transition: var(--transition);
    cursor: pointer;
}

.ride-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

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

.ride-direction {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.4rem 0.8rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.ride-direction.to-work {
    background: var(--primary-light);
    color: var(--primary-color);
}

.ride-direction.from-work {
    background: var(--secondary-light);
    color: var(--secondary-color);
}

.ride-driver {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.driver-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

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

.driver-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.driver-rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.85rem;
    color: var(--accent-color);
}

.ride-route {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--border-radius-sm);
}

.route-point {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.route-point:last-child {
    margin-bottom: 0;
}

.route-icon {
    font-size: 1.2rem;
    margin-top: 2px;
}

.route-details {
    flex: 1;
}

.route-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
}

.route-address {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.ride-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-sm);
    background: var(--gray-50);
    border-radius: var(--border-radius-sm);
}

.info-icon {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.info-value {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.info-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.ride-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.ride-actions button {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
}

/* --- Messages --- */
.error,
.success,
.warning,
.info {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
}

.error {
    background: #fee;
    color: var(--error);
    border: 2px solid var(--error);
}

.success {
    background: #efe;
    color: var(--success);
    border: 2px solid var(--success);
}

.warning {
    background: #ffeeba;
    color: #856404;
    border: 2px solid var(--warning);
}

.info {
    background: var(--primary-light);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

/* --- Auth Container --- */
.auth-container {
    max-width: 500px;
    margin: var(--spacing-2xl) auto;
    padding: var(--spacing-2xl);
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
}

.auth-container h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xl);
}

/* --- Login Prompt --- */
.login-prompt {
    padding: var(--spacing-2xl);
    text-align: center;
}

.login-prompt h2 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.login-prompt p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.login-prompt .button {
    width: 100%;
    margin-bottom: var(--spacing-sm);
}

/* --- Approval Pending --- */
.approval-pending {
    padding: var(--spacing-2xl);
    text-align: center;
    background: linear-gradient(135deg, var(--warning), var(--accent-hover));
    color: white;
    border-radius: var(--border-radius);
    margin: var(--spacing-lg);
}

.approval-pending h3 {
    color: white;
    margin-bottom: var(--spacing-md);
}

/* --- Admin Panel --- */
.admin-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
}

.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: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-card h3 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.stat-card p {
    color: var(--text-secondary);
    font-weight: 600;
    margin: 0;
}

.stat-card.highlight {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.stat-card.highlight h3,
.stat-card.highlight p {
    color: white;
}

/* --- Tables --- */
.table-container {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.table-header {
    padding: var(--spacing-lg);
    background: var(--gray-50);
    border-bottom: 2px solid var(--border-color);
}

.table-header h3 {
    margin: 0;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--gray-50);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

tr:hover {
    background: var(--gray-50);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.badge.admin {
    background: var(--primary-light);
    color: var(--primary-color);
}

.badge.user {
    background: var(--gray-200);
    color: var(--gray-700);
}

.badge.pending {
    background: var(--warning);
    color: white;
}

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

/* --- Modal --- */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    backdrop-filter: blur(4px);
}

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

.modal-content {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--spacing-sm);
}

.modal-close:hover {
    color: var(--text-primary);
}

/* --- Loading Spinner --- */
.spinner {
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: var(--spacing-xl) auto;
}

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

/* --- Tooltips --- */
.tooltip {
    position: relative;
    cursor: help;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-900);
    color: white;
    font-size: 0.85rem;
    border-radius: var(--border-radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.tooltip:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
}

/* --- Footer --- */
footer {
    background: var(--gray-900);
    color: white;
    padding: var(--spacing-xl);
    text-align: center;
    margin-top: auto;
}

footer a {
    color: var(--primary-light);
}

/* --- Responsive Design --- */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 380px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
        --sidebar-width: 100%;
    }
    
    .header-container {
        padding: 0 var(--spacing-md);
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        gap: var(--spacing-sm);
    }
    
    nav.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .container {
        flex-direction: column;
        height: auto;
    }
    
    #map {
        height: 50vh;
        min-height: 400px;
    }
    
    .sidebar {
        width: 100%;
        border-left: none;
        border-top: 1px solid var(--border-color);
        max-height: none;
    }
    
    .form-container,
    .filter-container {
        padding: var(--spacing-lg);
    }
    
    .direction-tabs {
        grid-template-columns: 1fr;
    }
    
    .ride-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .auth-container {
        margin: var(--spacing-lg);
        padding: var(--spacing-lg);
    }
    
    .admin-container {
        padding: var(--spacing-lg);
    }
    
    table {
        font-size: 0.9rem;
    }
    
    th, td {
        padding: var(--spacing-sm);
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
    .ride-actions {
        flex-direction: column;
    }
    
    .ride-info-grid {
        grid-template-columns: 1fr;
    }
    
    .user-info {
        display: none;
    }
    
    .lang-switcher {
        order: -1;
    }
}

/* --- Print Styles --- */
@media print {
    header,
    .sidebar,
    .map-controls,
    button,
    .mobile-menu-toggle {
        display: none !important;
    }
    
    .container {
        display: block;
    }
    
    .ride-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}

/* --- Dark Mode Support (Optional) --- */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1f2937;
        --bg-secondary: #111827;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --border-color: #374151;
    }
    
    body {
        background: var(--bg-secondary);
        color: var(--text-primary);
    }
    
    header,
    .sidebar,
    .form-container,
    .ride-card,
    .auth-container,
    .stat-card,
    .table-container,
    .modal-content {
        background: var(--bg-primary);
        color: var(--text-primary);
    }
    
    input,
    textarea,
    select {
        background: var(--bg-secondary);
        color: var(--text-primary);
        border-color: var(--border-color);
    }
}

/* --- Accessibility Enhancements --- */
*:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* --- Custom Animations --- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.hidden { display: none; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }