/* ======= Enhanced Base Theme with Modern Design System ======= */

/* CSS Custom Properties for Design Tokens */
:root {
    /* Color Palette */
    --primary-color: #fd8535;
    --primary-dark: #e76f1f;
    --primary-light: #ffa666;
    --secondary-color: #fff8e1;
    --accent-color: #ffb300;
    --accent-dark: #ff8f00;
    
    /* Semantic Colors */
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Neutral Colors */
    --text-dark: #2d2d2d;
    --text-light: #ffffff;
    --text-muted: #6c757d;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e9ecef;
    
    /* Spacing Scale */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Typography Scale */
    --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;
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* 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;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

html, body {
    max-width: 100vw;
    overflow-x: hidden !important;
}

body {
    font-family: 'Poppins', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: #fffdf8;
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    overflow-x: hidden;
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

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(--text-dark);
}

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

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

/* Enhanced Header */
.main-header {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #ffe0b2 100%);
    border-bottom: 1px solid rgba(253, 133, 53, 0.1);
    box-shadow: var(--shadow-md);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-sticky);
    transition: var(--transition-fast);
}

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

.navbar {
    padding: var(--spacing-sm) 0;
    transition: var(--transition-normal);
}

.navbar-brand {
    font-weight: var(--font-weight-bold);
    color: var(--text-dark) !important;
    text-decoration: none !important;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

@media only screen and (max-width: 360px) and (max-height: 740px) {
    .container {
        padding-right: 0 !important;
        margin-bottom: -2% !important;
    }
}

.brand-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    line-height: 1.2;
}

.brand-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    font-weight: var(--font-weight-medium);
}

/* Enhanced Navigation */
.modern-nav-link {
    color: var(--text-dark) !important;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-md) !important;
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
    position: relative;
    display: flex;
    align-items: center;
    margin: 0 var(--spacing-xs);
}

.modern-nav-link:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--text-light) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

.modern-nav-link.active {
    background: var(--primary-color);
    color: var(--text-light) !important;
}

.btn-register-nav {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color)) !important;
    color: var(--text-light) !important;
    border: none !important;
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-sm) var(--spacing-lg) !important;
    border-radius: var(--radius-full) !important;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.btn-register-nav:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    color: var(--text-light) !important;
}

/* Custom Navbar Toggler */
.custom-toggler {
    border: none;
    padding: var(--spacing-sm);
    background: transparent;
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.custom-toggler:focus {
    box-shadow: none;
}

.toggler-icon {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 4px 0;
    transition: var(--transition-fast);
    border-radius: var(--radius-sm);
}

.custom-toggler:hover .toggler-icon {
    background: var(--primary-dark);
}

/* Hamburger to Cross Animation */
.custom-toggler .toggler-icon {
    transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    position: relative;
}

.custom-toggler.active .toggler-icon:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.custom-toggler.active .toggler-icon:nth-child(2) {
    opacity: 0;
}
.custom-toggler.active .toggler-icon:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Reading Progress Bar */
.reading-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    z-index: var(--z-fixed);
    transition: width 0.3s ease;
}

/* Enhanced Flash Messages */
.modern-alert {
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--shadow-md);
    font-weight: var(--font-weight-medium);
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    color: #856404;
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1, #bee5eb);
    color: #0c5460;
}

/* Modern Card Components */
.modern-card {
    background: var(--bg-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: var(--transition-normal);
    border: 1px solid rgba(253, 133, 53, 0.1);
    position: relative;
}

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

.modern-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

/* Enhanced Footer */
.modern-footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: var(--text-light);
    position: relative;
    margin-top: auto;
}

.footer-wave {
    position: absolute;
    top: -1px;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    z-index: 0; /* Lowered z-index */
}

.footer-content {
    position: relative;
    z-index: 2; /* Make sure it's above the wave */
    padding-top: 80px; /* Increase padding to push content below the wave */
}

@media (max-width: 991.98px) {
    .footer-content {
        padding-top: 60px;
    }
}

@media (max-width: 575.98px) {
    .footer-content {
        padding-top: 50px; /* More padding for mobile */
    }
    .footer-wave svg {
        height: 40px; /* Slightly larger wave for better clearance */
    }
}

.footer-wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 60px;
}

.footer-wave-path {
    fill: #ffffff;
}

.footer-content {
    position: relative;
    z-index: 2;
}

.footer-brand img {
    position: relative;
    z-index: 3;
    
}

.footer-title {
    color: var(--text-light);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.footer-description {
    color: #bdc3c7;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.footer-heading {
    color: var(--text-light);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-links a {
    color: #bdc3c7;
    text-decoration: none;
    transition: var(--transition-fast);
    font-weight: var(--font-weight-medium);
}

.footer-links a:hover {
    color: var(--text-light);
    text-decoration: none;
    transform: translateX(5px);
}

/* Social Links */
.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.social-link {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: var(--font-size-lg);
    transition: var(--transition-normal);
    text-decoration: none;
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--text-light);
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

/* Facebook */
.social-link[title="Facebook"]:hover,
.social-link .fa-facebook-f:hover {
    background: #1877f3;
    color: #fff;
}

/* Twitter */
.social-link[title="Twitter"]:hover,
.social-link .fa-twitter:hover {
    background: #1da1f2;
    color: #fff;
}

/* Instagram */
.social-link[title="Instagram"]:hover,
.social-link .fa-instagram:hover {
    background: radial-gradient(circle at 30% 110%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285aeb 90%);
    color: #fff;
}

/* YouTube */
.social-link[title="YouTube"]:hover,
.social-link .fa-youtube:hover {
    background: #ff0000;
    color: #fff;
}

/* WhatsApp */
.social-link[title="WhatsApp"]:hover,
.social-link .fa-whatsapp:hover {
    background: #25d366;
    color: #fff;
}

/* Contact Info */
.contact-info {
    margin-top: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
    color: #bdc3c7;
}

.contact-item i {
    color: var(--primary-color);
    margin-right: var(--spacing-md);
    width: 20px;
    font-size: var(--font-size-lg);
}

.contact-item a {
    color: #bdc3c7;
    text-decoration: none;
    transition: var(--transition-fast);
}

.contact-item a:hover {
    color: var(--text-light);
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.copyright {
    color: #bdc3c7;
    margin: 0;
    font-size: var(--font-size-sm);
}

.admin-link {
    color: #bdc3c7;
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    font-size: var(--font-size-sm);
}

.admin-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    text-decoration: none;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--text-light);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xl);
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    z-index: var(--z-fixed);
    opacity: 0;
    visibility: hidden;
    transform: translateY(100px);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: var(--shadow-xl);
}

/* Breadcrumb Enhancement */

.modern-breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
    font-size: var(--font-size-sm);
}

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

.modern-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--primary-color);
    font-weight: var(--font-weight-bold);
}

.modern-breadcrumb .breadcrumb-item.active {
    color: var(--primary-color);
    font-weight: var(--font-weight-medium);
}

.modern-breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

/* Responsive Design */
@media (max-width: 991.98px) {
    .navbar-collapse {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.2s cubic-bezier(0.4,0,0.2,1);
    }
    .navbar-collapse.show {
        max-height: 500px;
        /* Remove transition here for instant effect */
        transition: max-height 0.2s cubic-bezier(0.4,0,0.2,1);
    }
    
    .footer-content {
        padding-top: 60px;
    }
}

@media (max-width: 767.98px) {
    .brand-title {
        font-size: var(--font-size-base);
    }
    
    .brand-subtitle {
        display: none;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 575.98px) {
    :root {
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
    }
    
    .modern-card {
        margin-bottom: var(--spacing-lg);
    }
    
    .footer-wave svg {
        height: 30px; /* Smaller wave on mobile */
    }
    .footer-content {
        padding-top: 30px;
    }
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border: none;
    color: var(--text-light);
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-normal);
}

.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--text-light);
}

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

.border-gradient {
    border: 2px solid transparent;
    background: linear-gradient(var(--bg-white), var(--bg-white)) padding-box,
                linear-gradient(135deg, var(--primary-color), var(--accent-color)) border-box;
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-in-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

.scale-in {
    animation: scaleIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}