/* Mobile Responsive Enhancements for Tutor AI PWA */

/* 1. Safe Area Support for iOS devices with notch */
:root {
    --safe-area-inset-top: env(safe-area-inset-top);
    --safe-area-inset-right: env(safe-area-inset-right);
    --safe-area-inset-bottom: env(safe-area-inset-bottom);
    --safe-area-inset-left: env(safe-area-inset-left);
}

/* PWA specific adjustments */
@media (display-mode: standalone) {
    body {
        padding-top: var(--safe-area-inset-top);
        padding-left: var(--safe-area-inset-left);
        padding-right: var(--safe-area-inset-right);
        padding-bottom: var(--safe-area-inset-bottom);
    }
    
    .mobile-topbar {
        padding-top: calc(0.75rem + var(--safe-area-inset-top));
    }
    
    .sidebar {
        padding-top: var(--safe-area-inset-top);
    }
}

/* 2. Fluid Spacing with clamp() */
.container-fluid {
    padding: clamp(1rem, 4vw, 2rem);
}

/* Learning Path Cards - Enhanced touch targets */
.learning-path-card,
.step-card,
.content-card {
    min-height: 44px;
    padding: clamp(0.75rem, 3vw, 1.5rem);
    margin: clamp(0.5rem, 2vw, 1rem) 0;
    border-radius: clamp(8px, 2vw, 12px);
    transition: all 0.3s ease;
}

/* Navigation buttons - Improved touch targets */
.btn-group .btn,
.nav-pills .nav-link {
    min-height: 44px;
    min-width: 44px;
    padding: clamp(0.5rem, 2vw, 0.75rem) clamp(0.75rem, 3vw, 1.25rem);
    font-size: clamp(0.875rem, 2.5vw, 1rem);
}

/* 3. Mapa Mental - Flexbox layout improvements */
.mindmap-container {
    display: flex;
    flex-direction: column;
    gap: clamp(1rem, 3vw, 1.5rem);
    padding: clamp(1rem, 4vw, 2rem);
    max-width: 100%;
    overflow-x: hidden;
}

.mindmap-concepts {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(0.5rem, 2vw, 1rem);
    justify-content: center;
}

.mindmap-concept {
    flex: 1 1 auto;
    min-width: clamp(120px, 25vw, 150px);
    max-width: clamp(180px, 40vw, 220px);
    padding: clamp(0.75rem, 3vw, 1.25rem);
    border-radius: clamp(12px, 3vw, 16px);
    text-align: center;
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    line-height: 1.4;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mindmap-concept:hover,
.mindmap-concept:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* 4. Content Type Selector - Better mobile layout */
.content-type-selector {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(0.5rem, 2vw, 1rem);
    margin-bottom: clamp(1rem, 3vw, 2rem);
}

.content-type-selector .btn {
    flex: 1 1 auto;
    min-width: clamp(80px, 20vw, 120px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 5. Mobile-specific breakpoints */
@media (max-width: 480px) {
    /* Extra small devices adjustments */
    .container-fluid {
        padding: 1rem;
    }
    
    .mindmap-concept {
        min-width: calc(50vw - 1.5rem);
        max-width: calc(50vw - 1.5rem);
        font-size: 0.875rem;
    }
    
    .content-type-selector .btn {
        font-size: 0.875rem;
        padding: 0.5rem 0.75rem;
    }
    
    /* Reduce margins for tight spaces */
    .card {
        margin-bottom: 1rem;
    }
    
    /* Ensure proper text sizing */
    h1 { font-size: clamp(1.5rem, 5vw, 2rem); }
    h2 { font-size: clamp(1.25rem, 4vw, 1.75rem); }
    h3 { font-size: clamp(1.125rem, 3.5vw, 1.5rem); }
    h4 { font-size: clamp(1rem, 3vw, 1.25rem); }
}

@media (max-width: 360px) {
    /* Very small devices */
    .mindmap-concept {
        min-width: calc(100vw - 2rem);
        max-width: calc(100vw - 2rem);
    }
    
    .content-type-selector {
        flex-direction: column;
    }
    
    .content-type-selector .btn {
        width: 100%;
        min-width: auto;
    }
}

/* 6. Improved scrolling and overflow handling */
.main-content {
    overflow-x: hidden;
}

.card-body {
    overflow-wrap: break-word;
    word-wrap: break-word;
    hyphens: auto;
}

/* 7. Enhanced focus states for accessibility */
.btn:focus,
.nav-link:focus,
.mindmap-concept:focus {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
}

/* 8. Progress indicators - better mobile sizing */
.progress {
    height: clamp(8px, 2vw, 12px);
    border-radius: clamp(4px, 1vw, 6px);
}

/* 9. Modal and overlay improvements */
.modal-content {
    margin: clamp(1rem, 5vw, 2rem);
    max-height: calc(100vh - 2rem);
    overflow-y: auto;
}

/* 10. Chat interface mobile enhancements */
.chat-container {
    height: calc(100vh - var(--safe-area-inset-top) - var(--safe-area-inset-bottom) - 120px);
    max-height: 80vh;
}

.message {
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    line-height: 1.5;
    max-width: calc(100% - 2rem);
}

/* 11. Form improvements for mobile */
.form-control,
.form-select {
    font-size: clamp(0.875rem, 2.5vw, 1rem);
    padding: clamp(0.5rem, 2vw, 0.75rem);
    border-radius: clamp(6px, 1.5vw, 8px);
}

textarea.form-control {
    min-height: clamp(80px, 15vw, 120px);
}

/* 12. Loading states and animations */
.loading-spinner {
    width: clamp(24px, 6vw, 32px);
    height: clamp(24px, 6vw, 32px);
}

/* 13. Sidebar mobile adjustments */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-topbar {
        position: sticky;
        top: 0;
        z-index: 1020;
        background: var(--bg-primary);
        backdrop-filter: blur(10px);
    }
    
    /* Mobile-specific mapa mental adjustments */
    .mindmap-container {
        height: clamp(400px, 60vh, 500px) !important;
        padding: clamp(1rem, 4vw, 1.5rem) !important;
    }
    
    .mindmap-concept {
        position: static !important;
        margin: 0.5rem !important;
        width: auto !important;
        height: auto !important;
        min-height: 44px !important;
        display: flex !important;
        left: auto !important;
        top: auto !important;
        transform: none !important;
    }
    
    .mindmap-concepts {
        display: flex !important;
        flex-wrap: wrap !important;
        gap: 0.5rem !important;
        position: absolute !important;
        top: 50% !important;
        left: 50% !important;
        transform: translate(-50%, -50%) !important;
        width: 90% !important;
        justify-content: center !important;
    }
}

/* 14. Print styles for mobile */
@media print {
    .sidebar,
    .mobile-topbar,
    .btn,
    .navbar {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
        padding: 0 !important;
    }
}

/* 15. Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}