/* EdSet - Layout Components */
/* Optimized for performance and mobile responsiveness */

/* Decorative Background Elements */
/* Green Background Shape */
.green-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 400px;
    background: linear-gradient(135deg, #d4ed8e 0%, #a8db7e 20%, #8bc968 50%, #7ec85f 80%, #6bb550 100%);
    clip-path: path('M 0 0 L 1500 0 L 1500 100 Q 1400 80, 1300 100 Q 1200 120, 1100 100 Q 1000 80, 900 110 Q 800 140, 700 110 Q 600 80, 500 120 Q 400 160, 300 130 Q 200 100, 100 140 L 0 180 Z M 0 180 L 0 400 Q 300 380, 600 420 Q 900 460, 1200 410 Q 1350 385, 1500 400 L 1500 0');
    z-index: 0;
    pointer-events: none;
}

/* Decorative Circle - Left */
.circle-left {
    position: absolute;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(94, 160, 70, 0.8) 0%, rgba(94, 160, 70, 0.6) 50%, rgba(94, 160, 70, 0.3) 100%);
    border-radius: 50%;
    left: 30px;
    top: 120px;
    z-index: 1;
    pointer-events: none;
}

/* Decorative Circle - Right Top */
.circle-right-top {
    position: absolute;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(80, 140, 60, 0.5) 0%, rgba(80, 140, 60, 0.3) 60%, transparent 100%);
    border-radius: 50%;
    right: 100px;
    top: 80px;
    z-index: 1;
    pointer-events: none;
}

/* Decorative Circle - Right Bottom */
.circle-right-bottom {
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(60, 120, 50, 0.4) 0%, rgba(60, 120, 50, 0.2) 50%, transparent 100%);
    border-radius: 50%;
    right: -50px;
    bottom: 0;
    z-index: 1;
    pointer-events: none;
}

/* Decorative Container */
.decorative-container {
    position: relative;
    min-height: 400px;
    overflow: hidden;
    pointer-events: none;
}

/* White Wave Overlay */
.wave-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: white;
    clip-path: ellipse(80% 100% at 50% 100%);
    z-index: 2;
    pointer-events: none;
}

/* Main Layout */
.main-layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding: var(--space-xl) 0;
    min-height: calc(100vh - 200px);
}

/* Promotional Banner */
.promo-banner {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--text-inverse);
    padding: var(--space-md) 0;
    position: relative;
    z-index: var(--z-sticky);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.promo-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.promo-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.promo-link {
    color: var(--text-inverse);
    text-decoration: underline;
    margin-left: var(--space-sm);
    transition: opacity var(--transition-fast);
}

.promo-link:hover {
    opacity: 0.8;
}

.promo-close {
    background: none;
    border: none;
    color: var(--text-inverse);
    cursor: pointer;
    font-size: var(--font-size-lg);
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.promo-close:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.promo-close:focus {
    outline: 2px solid var(--text-inverse);
    outline-offset: 2px;
}

/* Navigation */
.navbar {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    padding: var(--space-lg) 0;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: color var(--transition-fast);
}

.navbar-brand:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.navbar-brand img {
    height: 32px;
    width: auto;
}

.navbar-nav {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
    gap: var(--space-sm);
}

.nav-item {
    position: relative;
}

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

.nav-link:hover {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
    text-decoration: none;
}

.nav-link:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

.nav-link.active {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
}

.nav-link.btn {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--text-inverse);
    border-radius: var(--radius-lg);
    padding: var(--space-sm) var(--space-lg);
    font-weight: var(--font-weight-semibold);
    box-shadow: var(--shadow-sm);
}

.nav-link.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

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

/* Mobile Navigation */
.navbar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.navbar-toggle:hover {
    background-color: var(--bg-secondary);
}

.navbar-toggle:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

.navbar-toggle-icon {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: all var(--transition-fast);
}

.navbar-toggle-icon::before,
.navbar-toggle-icon::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-fast);
}

.navbar-toggle-icon::before {
    top: -8px;
}

.navbar-toggle-icon::after {
    top: 8px;
}

.navbar-toggle.active .navbar-toggle-icon {
    background-color: transparent;
}

.navbar-toggle.active .navbar-toggle-icon::before {
    transform: rotate(45deg);
    top: 0;
}

.navbar-toggle.active .navbar-toggle-icon::after {
    transform: rotate(-45deg);
    top: 0;
}

/* User Avatar */
.user-avatar {
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--border-color);
    transition: border-color var(--transition-fast);
}

.user-avatar:hover {
    border-color: var(--primary-color);
}

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

.dropdown-toggle {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.dropdown-toggle:hover {
    background-color: var(--bg-secondary);
}

.dropdown-toggle:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm) 0;
    min-width: 200px;
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

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

.dropdown-item {
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-lg);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: all var(--transition-fast);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    cursor: pointer;
}

.dropdown-item:hover {
    background-color: var(--bg-secondary);
    color: var(--primary-color);
    text-decoration: none;
}

.dropdown-item:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: -2px;
}

.dropdown-divider {
    border-top: 1px solid var(--border-color);
    margin: var(--space-sm) 0;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-inverse);
    padding: var(--space-4xl) 0 var(--space-xl);
    margin-top: var(--space-4xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-section h5,
.footer-section h6 {
    color: var(--text-inverse);
    margin-bottom: var(--space-lg);
    font-weight: var(--font-weight-semibold);
}

.footer-section p {
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

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

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

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

.footer-links a:hover {
    color: var(--text-inverse);
    text-decoration: none;
}

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

.social-links a {
    color: var(--text-muted);
    font-size: var(--font-size-xl);
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.1);
}

.social-links a:hover {
    color: var(--text-inverse);
    background-color: var(--primary-color);
}

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

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--text-inverse);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    opacity: 0;
    visibility: hidden;
    z-index: var(--z-fixed);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.back-to-top:focus {
    outline: 2px solid var(--text-inverse);
    outline-offset: 2px;
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-overlay);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.loading-spinner.show {
    opacity: 1;
    visibility: visible;
}

.spinner-content {
    background: var(--bg-primary);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
    max-width: 300px;
    width: 90%;
}

.spinner-icon {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-lg);
}

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

.spinner-content p {
    margin: 0;
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-container {
        padding: 0 var(--space-md);
    }
    
    .navbar-nav {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--space-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .navbar-nav.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .nav-item {
        width: 100%;
        margin: var(--space-xs) 0;
    }
    
    .nav-link {
        width: 100%;
        justify-content: flex-start;
        padding: var(--space-md);
    }
    
    .promo-content {
        padding: 0 var(--space-md);
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .back-to-top {
        bottom: var(--space-lg);
        right: var(--space-lg);
        width: 45px;
        height: 45px;
        font-size: var(--font-size-base);
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--space-lg) 0;
    }
    
    .navbar {
        padding: var(--space-md) 0;
    }
    
    .footer {
        padding: var(--space-2xl) 0 var(--space-lg);
    }
    
    .spinner-content {
        padding: var(--space-xl);
    }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .back-to-top,
    .loading-spinner,
    .promo-banner {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
}