/**
 * Shared Navigation and UI Styles
 */

/* Top Navigation Bar */
.top-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: linear-gradient(90deg, #4ECDC4, #FF6B6B);
    box-shadow: var(--shadow-lg);
    padding: var(--space-md) 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.nav-left, .nav-right {
    gap: var(--space-md);
}

.nav-title {
    font-size: var(--font-size-normal);
    color: white;
    font-weight: 700;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
}

.btn-back,
.btn-audio-toggle,
.btn-settings {
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid white;
    color: white;
    font-size: 24px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-back:hover,
.btn-audio-toggle:hover,
.btn-settings:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

.btn-back:active,
.btn-audio-toggle:active,
.btn-settings:active {
    transform: scale(0.95);
}

/* Footer */
.footer {
    background: linear-gradient(90deg, #333333, #555555);
    color: white;
    padding: var(--space-lg);
    text-align: center;
    margin-top: auto;
}

.footer-text {
    font-size: var(--font-size-small);
    margin-bottom: var(--space-md);
    color: rgba(255, 255, 255, 0.8);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.footer-link {
    color: white;
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
    padding: 4px 8px;
}

.footer-link:hover {
    color: var(--accent-gold);
}

/* Main Content Area */
.main-content {
    flex: 1;
    transition: opacity var(--transition-normal);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    opacity: 0;
    transition: opacity var(--transition-normal), background-color var(--transition-normal);
    pointer-events: none;
}

.modal.show {
    display: flex;
    opacity: 1;
    background: rgba(0, 0, 0, 0.6);
    pointer-events: auto;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slide-in-up 0.3s ease-out;
    transform-origin: center bottom;
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 2px solid var(--bg-light);
    gap: var(--space-md);
}

.modal-header h2 {
    margin: 0;
    flex: 1;
    color: var(--text-dark);
}

.btn-close {
    background: transparent;
    border: none;
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

.btn-close:hover {
    transform: scale(1.2);
}

.modal-body {
    padding: var(--space-lg);
}

/* Settings Modal */
.settings-group {
    margin-bottom: var(--space-lg);
}

.setting-label {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--text-dark);
    user-select: none;
    margin-bottom: var(--space-md);
}

.setting-label input[type="checkbox"] {
    width: 24px;
    height: 24px;
    cursor: pointer;
    accent-color: var(--primary-teal);
}

.volume-control {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.volume-control input[type="range"] {
    flex: 1;
    height: 8px;
    cursor: pointer;
}

/* Achievements Modal */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.achievement-stat {
    background: linear-gradient(135deg, var(--primary-teal), var(--pastel-blue));
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    color: white;
    box-shadow: var(--shadow-md);
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

.stickers-collection h3 {
    margin-bottom: var(--space-md);
    color: var(--text-dark);
}

.stickers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.sticker {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    background: var(--bg-light);
    border: 2px solid #ddd;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.sticker.earned {
    background: linear-gradient(135deg, var(--primary-yellow), #FFD700);
    border-color: #FFD700;
    box-shadow: var(--shadow-md);
    animation: star-grow 0.5s ease-out;
}

.sticker.earned:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

.sticker.locked {
    opacity: 0.5;
    background: #eee;
}

/* Loading Spinner */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 3000;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

/* Toast Messages */
#toastContainer {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
}

.toast {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-weight: 600;
    font-size: var(--font-size-small);
    animation: slide-up 0.3s ease-out;
    margin-top: var(--space-md);
    max-width: 300px;
}

.toast.error {
    background: linear-gradient(135deg, #f44336, #da190b);
}

.toast.warning {
    background: linear-gradient(135deg, #ff9800, #e68900);
}

.toast.info {
    background: linear-gradient(135deg, #2196F3, #0b7dda);
}

/* Status Bar */
.status-bar {
    height: env(safe-area-inset-top, 0px);
    background: linear-gradient(90deg, #4ECDC4, #FF6B6B);
}

/* Responsive Navigation */
@media (max-width: 480px) {
    .nav-title {
        font-size: var(--font-size-normal);
        display: none;
    }

    .nav-left {
        flex: 1;
    }

    .btn-back,
    .btn-audio-toggle,
    .btn-settings {
        font-size: 20px;
        padding: 6px 12px;
    }

    .footer {
        padding: var(--space-md);
    }

    .footer-text {
        font-size: 12px;
        margin-bottom: var(--space-sm);
    }

    .footer-links {
        gap: var(--space-md);
    }

    .footer-link {
        font-size: 12px;
        padding: 2px 4px;
    }

    .modal-content {
        border-radius: var(--radius-md);
    }

    .stickers-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 320px) {
    .nav-left, .nav-right {
        gap: 4px;
    }

    .btn-back,
    .btn-audio-toggle,
    .btn-settings {
        font-size: 18px;
        padding: 4px 8px;
        min-height: 40px;
        min-width: 40px;
    }

    .stickers-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn-back:active,
    .btn-audio-toggle:active,
    .btn-settings:active {
        background: rgba(255, 255, 255, 0.5);
    }

    .btn-close:hover {
        transform: none;
    }

    .sticker.earned:hover {
        transform: none;
    }
}

/* Print styles */
@media print {
    .top-nav,
    .footer,
    .modal,
    .loading-spinner {
        display: none !important;
    }

    .main-content {
        padding: 0;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .modal-content {
        background: #2a2a2a;
        color: #ffffff;
    }

    .modal-header {
        border-bottom-color: #444;
    }

    .modal-header h2 {
        color: #ffffff;
    }

    .setting-label {
        color: #ffffff;
    }

    .achievement-stat {
        background: linear-gradient(135deg, #1a5f5e, #206f7d);
    }

    .sticker {
        background: #333;
        border-color: #444;
    }

    .sticker.locked {
        background: #222;
        border-color: #333;
    }
}