/**
 * DADE Learn - Component Styles
 * Additional component-specific styles
 */

/* ============================================================================
   HEADER COMPONENTS
   ============================================================================ */

.hide-mobile {
    display: none;
}

@media (min-width: 768px) {
    .hide-mobile {
        display: inline-flex;
    }
}

.user-dropdown {
    position: relative;
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.user-dropdown-toggle:hover {
    background: var(--gray-100);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.user-name {
    display: none;
    font-weight: 500;
    color: var(--text-primary);
}

@media (min-width: 768px) {
    .user-name {
        display: block;
    }
}

.user-dropdown-toggle i {
    font-size: var(--text-xs);
    color: var(--gray-400);
    transition: transform var(--transition-fast);
}

.user-dropdown.active .user-dropdown-toggle i {
    transform: rotate(180deg);
}

.user-dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    min-width: 200px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: var(--z-dropdown);
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.dropdown-item i {
    width: 20px;
    color: var(--gray-400);
}

.dropdown-item:hover i {
    color: var(--primary);
}

.dropdown-item.text-error {
    color: var(--error);
}

.dropdown-item.text-error i {
    color: var(--error);
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-100);
    margin: var(--space-2) 0;
}

/* Mobile Menu */
.mobile-menu-divider {
    height: 1px;
    background: var(--gray-100);
    margin: var(--space-4) 0;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.mobile-nav-link i {
    width: 20px;
    color: var(--gray-400);
}

/* ============================================================================
   FOOTER STYLES
   ============================================================================ */

.footer {
    background: var(--gray-900);
    color: var(--white);
    padding-top: var(--space-16);
}

.footer-grid {
    display: grid;
    gap: var(--space-10);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand .logo-text {
    color: var(--white);
    font-size: var(--text-2xl);
}

.footer-tagline {
    color: var(--accent);
    font-size: var(--text-sm);
    font-weight: 600;
    margin: var(--space-2) 0 var(--space-4);
}

.footer-description {
    color: var(--gray-400);
    font-size: var(--text-sm);
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    color: var(--white);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary);
    transform: translateY(-3px);
    color: var(--white);
}

.footer-title {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-5);
    color: var(--white);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    color: var(--gray-400);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: var(--space-2);
}

/* Newsletter */
.footer-newsletter {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    padding: var(--space-8);
    background: var(--gray-800);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
    .footer-newsletter {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.newsletter-content h4 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-2);
    color: var(--white);
}

.newsletter-content p {
    color: var(--gray-400);
    font-size: var(--text-sm);
    margin: 0;
}

.newsletter-form {
    display: flex;
    gap: var(--space-3);
    flex: 1;
    max-width: 400px;
}

.newsletter-form .form-input {
    flex: 1;
    background: var(--gray-900);
    border-color: var(--gray-700);
    color: var(--white);
}

.newsletter-form .form-input:focus {
    border-color: var(--primary);
}

/* Notification Dropdown */
.notification-dropdown {
    position: relative;
    margin-right: var(--space-2);
}

.notification-toggle {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--gray-200);
    color: var(--gray-500);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.notification-toggle:hover,
.notification-dropdown.active .notification-toggle {
    background: var(--gray-50);
    color: var(--primary);
    border-color: var(--primary-200);
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--error);
    color: var(--white);
    font-size: 10px;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--white);
}

.notification-menu {
    position: absolute;
    top: calc(100% + var(--space-3));
    right: -60px;
    width: 320px;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-100);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
    max-height: 400px;
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .notification-menu {
        right: 0;
    }
}

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

.notification-header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.notification-header h5 {
    margin: 0;
    font-size: var(--text-sm);
    font-weight: 600;
}

.notification-list {
    overflow-y: auto;
    flex: 1;
    max-height: 300px;
}

.notification-item {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--gray-50);
    display: flex;
    gap: var(--space-3);
    transition: background var(--transition-fast);
}

.notification-item:hover {
    background: var(--gray-50);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-icon {
    margin-top: 2px;
    font-size: var(--text-base);
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
}

.notification-content h6 {
    margin: 0 0 2px;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.notification-content p {
    margin: 0 0 4px;
    font-size: var(--text-xs);
    color: var(--text-secondary);
    line-height: 1.4;
}

.notification-time {
    font-size: 10px;
    color: var(--text-muted);
}

.empty-notification {
    padding: var(--space-8);
    text-align: center;
    color: var(--text-muted);
}

.empty-notification i {
    font-size: 24px;
    margin-bottom: var(--space-2);
    color: var(--gray-300);
}

/* Contact List */
.contact-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    color: var(--gray-400);
    font-size: var(--text-sm);
    line-height: 1.5;
}

.contact-list li i {
    color: var(--primary);
    margin-top: 4px;
    width: 20px;
    flex-shrink: 0;
}

.contact-list a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.contact-list a:hover {
    color: var(--white);
    padding-left: 0 !important;
}

/* Footer Bottom */
.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    align-items: center;
    text-align: center;
    padding: var(--space-6) 0;
    border-top: 1px solid var(--gray-800);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-bottom p {
    color: var(--gray-500);
    font-size: var(--text-sm);
    margin: 0;
}

.footer-bottom a {
    color: var(--accent);
}

.footer-bottom a:hover {
    color: var(--accent-light);
}

/* ============================================================================
   BACK TO TOP
   ============================================================================ */

.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: var(--z-fixed);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* Mobile: Stack back-to-top under AI bot on right side */
@media (max-width: 768px) {
    .back-to-top {
        right: 10px !important;
        left: auto !important;
        bottom: 16px !important;
        width: 44px;
        height: 44px;
        z-index: 9990;
    }
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #38b2ac 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--space-6);
}

.hero-badge i {
    color: var(--accent);
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: var(--text-5xl);
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.hero-title .highlight {
    color: var(--accent);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-bottom: var(--space-8);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.hero-stats {
    display: flex;
    gap: var(--space-10);
}

.hero-stat {
    text-align: center;
}

.hero-stat-value {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--white);
}

.hero-stat-label {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.8);
}

/* Hero Search */
.hero-search {
    display: flex;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-2);
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    margin-bottom: var(--space-8);
}

.hero-search .search-input {
    flex: 1;
    border: none;
    padding: var(--space-4);
    font-size: var(--text-base);
    background: transparent;
    outline: none;
}

.hero-search .search-input::placeholder {
    color: var(--gray-400);
}

.hero-search .btn {
    border-radius: var(--radius-lg);
}

/* ============================================================================
   STATS SECTION
   ============================================================================ */

.stats-section {
    background: var(--white);
    padding: var(--space-12) 0;
    margin-top: calc(-1 * var(--space-16));
    position: relative;
    z-index: 10;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-card {
    text-align: center;
    padding: var(--space-6);
}

.stat-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-4);
    background: var(--primary-50);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    color: var(--primary);
}

.stat-value {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* ============================================================================
   SECTION HEADERS
   ============================================================================ */

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.section-header.text-left {
    text-align: left;
    margin-left: 0;
}

.section-header .section-subtitle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-4);
    background: var(--primary-50);
    color: var(--primary);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.section-header .section-title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
    .section-header .section-title {
        font-size: var(--text-4xl);
    }
}

.section-header .section-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin: 0;
}

/* ============================================================================
   COURSE GRID
   ============================================================================ */

.course-grid {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .course-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .course-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1280px) {
    .course-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================================================
   CATEGORY CARDS
   ============================================================================ */

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-8) var(--space-6);
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.category-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--primary-50) 0%, rgba(10, 147, 150, 0.1) 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    color: var(--primary);
    margin-bottom: var(--space-4);
    transition: all var(--transition-normal);
}

.category-card:hover .category-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    transform: scale(1.1);
}

.category-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.category-count {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* ============================================================================
   TESTIMONIALS
   ============================================================================ */

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
}

.testimonial-rating {
    display: flex;
    gap: var(--space-1);
    color: var(--accent);
    margin-bottom: var(--space-4);
}

.testimonial-text {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.testimonial-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-name {
    font-weight: 600;
    color: var(--text-primary);
}

.testimonial-role {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* ============================================================================
   CTA SECTION
   ============================================================================ */

.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: var(--space-16) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--text-3xl);
    color: var(--white);
    margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
    .cta-title {
        font-size: var(--text-4xl);
    }
}

.cta-text {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
}

/* ============================================================================
   STAR RATING
   ============================================================================ */

.star-rating {
    display: inline-flex;
    gap: 2px;
    color: var(--accent);
    font-size: var(--text-sm);
}

.star-rating .far {
    color: var(--gray-300);
}

/* ============================================================================
   TOAST CLOSE
   ============================================================================ */

.toast-close {
    margin-left: var(--space-3);
    color: inherit;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

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

/* ============================================================================
   PROGRESS BAR
   ============================================================================ */

.progress {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* ============================================================================
   BADGE
   ============================================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: var(--primary-100);
    color: var(--primary);
}

.badge-accent {
    background: rgba(255, 183, 3, 0.2);
    color: #b47d00;
}

.badge-success {
    background: var(--success-bg);
    color: #065f46;
}

.badge-warning {
    background: var(--warning-bg);
    color: #92400e;
}

.badge-error {
    background: var(--error-bg);
    color: #991b1b;
}