@import url('https://fonts.googleapis.com/css2?family=Sarabun:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800&display=swap');

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

:root {
    /* Color Palette สำหรับระบบเศรษฐกิจพอเพียง */
    --primary-purple: #9B59B6;
    --primary-green: #8BC34A;
    --primary-orange: #FF9800;
    --primary-blue: #5DADE2;
    --primary-pink: #EC77AB;
    --primary-teal: #80CBC4;
    --primary-yellow: #FFC107;
    --primary-indigo: #5C6BC0;
    --primary-lime: #CDDC39;
    --primary-cyan: #00BCD4;
    
    /* Functional Colors */
    --dark-purple: #6C3483;
    --light-purple: #D7BDE2;
    --success-green: #4CAF50;
    --warning-orange: #FFA726;
    --info-blue: #42A5F5;
    --danger-red: #EF5350;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --light-gray: #F5F5F5;
    --gray: #BDBDBD;
    --dark-gray: #757575;
    --black: #212121;
    
    /* Typography */
    --font-family: 'Sarabun', 'TH Sarabun New', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    /* Layout */
    --header-height: 70px;
    --sidebar-width: 280px;
    --container-max-width: 1200px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
    --shadow-xl: 0 12px 24px rgba(0,0,0,0.25);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--black);
    background-color: var(--light-gray);
    overflow-x: hidden;
}

/* ============================================
   Container
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

/* ============================================
   Header Styles
   ============================================ */
.header {
    background: linear-gradient(135deg, var(--primary-purple) 0%, var(--dark-purple) 100%);
    color: var(--white);
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
}

.header.hide {
    transform: translateY(-100%);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    height: 45px;
    width: auto;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-sm);
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--white);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--white);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
    list-style: none;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--black);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: var(--font-size-base);
}

.dropdown-item:hover {
    background-color: var(--light-gray);
    color: var(--primary-purple);
    transform: translateX(5px);
}

.dropdown-item i {
    width: 20px;
    text-align: center;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--gray);
    margin: var(--spacing-sm) 0;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 28px;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--white);
    margin: 5px 0;
    transition: all var(--transition-fast);
}

/* ============================================
   Main Content Area
   ============================================ */
.main-content {
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
    padding: var(--spacing-xl) 0;
}

.py-5 {
    padding-top: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.95) 0%, rgba(108, 52, 131, 0.95) 100%),
                url('../images/hero-bg.jpg') center/cover no-repeat;
    color: var(--white);
    padding: var(--spacing-xxl) 0;
    text-align: center;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.hero-title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: fadeInDown 0.8s ease-out;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Card Styles
   ============================================ */
.card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    position: relative;
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-purple), var(--primary-pink));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    border-bottom: 2px solid var(--light-gray);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--primary-purple);
    margin-bottom: var(--spacing-sm);
}

.card-body {
    padding: var(--spacing-md) 0;
}

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

/* Feature Cards with Colorful Icons */
.card.text-center:nth-child(1) .fa-book-reader {
    color: var(--primary-purple);
}

.card.text-center:nth-child(2) .fa-tasks {
    color: var(--success-green);
}

.card.text-center:nth-child(3) .fa-certificate {
    color: var(--warning-orange);
}

.card.text-center:nth-child(4) .fa-users {
    color: var(--info-blue);
}

.card.text-center:nth-child(5) .fa-download {
    color: var(--primary-pink);
}

.card.text-center:nth-child(6) .fa-chart-line {
    color: var(--primary-teal);
}

/* ============================================
   Button Styles
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn:active {
    transform: translateY(0);
}

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

.btn-primary:hover {
    background-color: var(--dark-purple);
}

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

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

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

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

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

.btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-purple);
}

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

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

/* ============================================
   Grid System - แก้ปัญหาการทับซ้อน
   ============================================ */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--spacing-md) * -0.5);
}

.col,
[class*="col-"] {
    padding: 0 calc(var(--spacing-md) * 0.5);
    width: 100%;
}

.col-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
.col-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
.col-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-9 { flex: 0 0 75%; max-width: 75%; }
.col-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
.col-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
.col-12 { flex: 0 0 100%; max-width: 100%; }

/* Grid Responsive */
@media (max-width: 767px) {
    .col-md-1, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6,
    .col-md-7, .col-md-8, .col-md-9, .col-md-10, .col-md-11, .col-md-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

@media (min-width: 768px) {
    .col-md-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
    .col-md-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
    .col-md-3 { flex: 0 0 25%; max-width: 25%; }
    .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-md-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
    .col-md-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-md-9 { flex: 0 0 75%; max-width: 75%; }
    .col-md-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
    .col-md-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
    .col-md-12 { flex: 0 0 100%; max-width: 100%; }
}

/* ============================================
   Level Badge & Stars
   ============================================ */
.level-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.level-1 {
    background-color: #FFF3CD;
    color: #856404;
}

.level-2 {
    background-color: #D1ECF1;
    color: #0C5460;
}

.star-icon {
    display: inline-block;
    font-size: 1.2em;
    color: #FFD700;
    text-shadow: 0 0 5px rgba(255, 215, 0, 0.5);
    animation: starPulse 2s ease-in-out infinite;
}

@keyframes starPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ============================================
   Footer Styles
   ============================================ */
.footer {
    background: linear-gradient(135deg, var(--dark-purple) 0%, var(--black) 100%);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
    margin-top: var(--spacing-xxl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--primary-pink);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-fast);
    opacity: 0.8;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-section a:hover {
    opacity: 1;
    color: var(--primary-pink);
    padding-left: var(--spacing-sm);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    opacity: 0.8;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--primary-pink);
    transform: translateY(-3px) rotate(5deg);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--black);
}

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

.form-control:focus {
    outline: none;
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(155, 89, 182, 0.1);
}

.form-control:disabled {
    background-color: var(--light-gray);
    cursor: not-allowed;
}

/* ============================================
   Alert Messages
   ============================================ */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideInDown 0.5s ease-out;
}

.alert-success {
    background-color: #D4EDDA;
    border-color: var(--success-green);
    color: #155724;
}

.alert-warning {
    background-color: #FFF3CD;
    border-color: var(--warning-orange);
    color: #856404;
}

.alert-danger {
    background-color: #F8D7DA;
    border-color: var(--danger-red);
    color: #721C24;
}

.alert-info {
    background-color: #D1ECF1;
    border-color: var(--info-blue);
    color: #0C5460;
}

.alert-close {
    margin-left: auto;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.alert-close:hover {
    opacity: 1;
}

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

/* ============================================
   Badge Styles
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

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

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

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

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

.badge-secondary {
    background-color: var(--gray);
    color: var(--white);
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--light-gray);
    border-top-color: var(--primary-purple);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

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

/* ============================================
   Modal
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

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

@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: 28px;
    cursor: pointer;
    color: var(--dark-gray);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    color: var(--danger-red);
    transform: rotate(90deg);
}

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

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

.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* ============================================
   Icon Animations
   ============================================ */
.fa-pulse {
    animation: iconPulse 2s ease-in-out infinite;
}

@keyframes iconPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Icon Colors for Different Features */
.fa-book-reader { color: var(--primary-purple); }
.fa-tasks { color: var(--success-green); }
.fa-certificate { color: var(--warning-orange); }
.fa-users { color: var(--info-blue); }
.fa-download { color: var(--primary-pink); }
.fa-chart-line { color: var(--primary-teal); }
.fa-school { color: var(--success-green); }
.fa-graduation-cap { color: var(--warning-orange); }

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet (768px and below) */
@media screen and (max-width: 768px) {
    :root {
        --header-height: 60px;
        --font-size-base: 15px;
        --font-size-xl: 22px;
        --font-size-xxl: 28px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 280px;
        height: calc(100vh - var(--header-height));
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-xl);
        transition: left var(--transition-normal);
        overflow-y: auto;
        z-index: var(--z-fixed);
        list-style: none;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        color: var(--black);
        justify-content: flex-start;
        width: 100%;
    }
    
    .nav-link:hover,
    .nav-link.active {
        background-color: var(--light-purple);
        color: var(--primary-purple);
    }
    
    .menu-toggle {
        display: block;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: var(--light-gray);
        margin-top: var(--spacing-sm);
        display: none;
        list-style: none;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .hero-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* Mobile (576px and below) */
@media screen and (max-width: 576px) {
    :root {
        --header-height: 55px;
        --font-size-base: 14px;
        --font-size-sm: 13px;
        --font-size-lg: 16px;
        --font-size-xl: 20px;
        --font-size-xxl: 24px;
        --spacing-lg: 16px;
        --spacing-xl: 24px;
        --spacing-xxl: 32px;
    }
    
    .header-container {
        padding: 0 var(--spacing-md);
    }
    
    .logo {
        font-size: var(--font-size-lg);
    }
    
    .logo img {
        height: 35px;
    }
    
    .main-content {
        padding: var(--spacing-lg) 0;
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .row {
        margin: 0 calc(var(--spacing-sm) * -1);
    }
    
    .col,
    [class*="col-"] {
        padding: 0 var(--spacing-sm);
    }
    
    .modal-content {
        width: 95%;
        padding: var(--spacing-lg);
    }
}

/* Large Desktop (1200px and above) */
@media screen and (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

/* Extra Large Desktop (1400px and above) */
@media screen and (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .header,
    .footer,
    .menu-toggle,
    .btn {
        display: none;
    }
    
    .main-content {
        margin-top: 0;
    }
    
    body {
        background-color: var(--white);
    }
}

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

/* Focus Styles for Keyboard Navigation */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-purple);
    outline-offset: 2px;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background-color: var(--primary-purple);
    color: var(--white);
}

::-moz-selection {
    background-color: var(--primary-purple);
    color: var(--white);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background-color: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background-color: var(--primary-purple);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--dark-purple);
}

/* ============================================
   Back to Top Button
   ============================================ */
#backToTop {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 999;
    border-radius: var(--radius-full);
    width: 50px;
    height: 50px;
    padding: 0;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-fast);
}

#backToTop:hover {
    transform: translateY(-5px);
}

/* ============================================
   Counter Animation Numbers
   ============================================ */
[data-counter] {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-purple);
}