/* Custom CSS for GlobalTranslate */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --purple-color: #6f42c1;
}

/* Global Styles */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
}

/* Navigation */
.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--light-color) 0%, #e3f2fd 100%);
    min-height: 70vh;
}

.min-vh-50 {
    min-height: 50vh;
}

/* Feature Cards */
.feature-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 0.5rem;
    background: white;
    border: 1px solid #dee2e6;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Demo Interface */
.demo-interface {
    border: 1px solid #dee2e6;
    background: white;
}

/* Translation Interface */
.translation-card {
    transition: box-shadow 0.3s ease;
}

.translation-card:hover {
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
}

/* Voice Input States */
.voice-recording {
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.voice-listening {
    background-color: var(--danger-color) !important;
    border-color: var(--danger-color) !important;
    color: white !important;
}

.voice-processing {
    background-color: var(--warning-color) !important;
    border-color: var(--warning-color) !important;
    color: var(--dark-color) !important;
}

/* Audio Controls */
.audio-controls {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.audio-playing {
    background-color: var(--success-color) !important;
    border-color: var(--success-color) !important;
    color: white !important;
}

/* Language Selector */
.language-selector select {
    border-radius: 0.375rem;
}

/* Examples List */
.examples-list {
    background-color: var(--light-color);
    padding: 0.75rem;
    border-radius: 0.375rem;
    border-left: 3px solid var(--primary-color);
}

.examples-list .small {
    line-height: 1.5;
}

/* Loading States */
.loading-state {
    text-align: center;
    padding: 2rem;
}

.loading-spinner {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: text-bottom;
    border: 0.25em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner 0.75s linear infinite;
}

@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

/* Error States */
.error-state {
    padding: 1rem;
    border-radius: 0.375rem;
}

/* Subscription Styles */
.subscription-card {
    position: relative;
    overflow: hidden;
}

.subscription-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--warning-color);
    color: var(--dark-color);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
}

/* History Page */
.translation-card {
    border-left: 3px solid var(--primary-color);
}

.translation-card.favorited {
    border-left-color: var(--danger-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .feature-card {
        margin-bottom: 1rem;
    }
    
    .audio-controls {
        justify-content: center;
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .btn-group-vertical .btn {
        margin-bottom: 0.25rem;
    }
    
    /* Translation interface mobile optimization */
    .translation-card .card-body {
        padding: 1rem;
    }
    
    .language-selector .form-select {
        margin-bottom: 0.5rem;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    .input-group .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Button adjustments for mobile */
    .btn-group {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .btn-group .btn {
        flex: 1 1 auto;
        min-width: 120px;
    }
    
    /* Audio control buttons mobile layout */
    .audio-controls .btn {
        margin: 0.125rem;
        padding: 0.375rem 0.5rem;
        font-size: 0.875rem;
        flex: 1 1 auto;
        min-width: 80px;
    }
    
    /* Mobile-specific translation result styling */
    .translation-card .h5 {
        font-size: 1.1rem;
        line-height: 1.4;
    }
    
    /* Example sentences mobile layout */
    .example-item {
        margin-bottom: 0.75rem;
        padding: 0.75rem;
    }
    
    .example-audio-controls {
        margin-top: 0.5rem;
        gap: 0.25rem;
        justify-content: flex-start;
        flex-wrap: wrap;
    }
    
    .example-audio-controls .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
        margin: 0.125rem;
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .display-6 {
        font-size: 1.5rem;
    }
    
    .btn-lg {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }
    
    /* Very small screens - stack everything vertically */
    .row .col-md-6 {
        margin-bottom: 1rem;
    }
    
    .translation-card {
        margin-bottom: 1.5rem;
    }
    
    .card-body {
        padding: 0.75rem;
    }
    
    /* Make swap button more prominent on mobile */
    .swap-languages-btn {
        margin: 0.5rem 0;
        width: 100%;
    }
    
    /* Touch-friendly button sizes */
    .btn {
        min-height: 44px; /* iOS touch target minimum */
        padding: 0.5rem 0.75rem;
    }
    
    .btn-sm {
        min-height: 38px;
        padding: 0.375rem 0.5rem;
    }
    
    /* Form controls touch-friendly */
    .form-control,
    .form-select {
        min-height: 44px;
        font-size: 16px;
    }
    
    /* Navigation improvements */
    .navbar-toggler {
        padding: 0.5rem;
        font-size: 1.25rem;
    }
    
    /* Container padding for mobile */
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* Custom Button Styles */
.btn-purple {
    background-color: var(--purple-color);
    border-color: var(--purple-color);
    color: white;
}

.btn-purple:hover {
    background-color: #5a359a;
    border-color: #5a359a;
    color: white;
}

.btn-outline-purple {
    color: var(--purple-color);
    border-color: var(--purple-color);
}

.btn-outline-purple:hover {
    background-color: var(--purple-color);
    border-color: var(--purple-color);
    color: white;
}

/* Accessibility Improvements */
.btn:focus,
.form-control:focus,
.form-select:focus {
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border-width: 2px;
    }
    
    .btn {
        border-width: 2px;
    }
}

/* 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;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .btn,
    .modal,
    .audio-controls {
        display: none !important;
    }
    
    .card {
        border: 1px solid #000;
        box-shadow: none;
    }
    
    .translation-card {
        page-break-inside: avoid;
        margin-bottom: 1rem;
    }
}

/* Dark mode support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles would go here */
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--dark-color);
}

/* Payment Options Styling */
.payment-option {
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.payment-option:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.payment-option.border-info:hover {
    border-color: var(--info-color);
}

/* Utility Classes */
.bg-gradient {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0));
}

.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.shadow {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.shadow-lg {
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175);
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}