/* Safari color rendering fix: enforce color-scheme and text rendering */
html {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-family: prk-font, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* Force Safari to use correct color rendering */
* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Safari-specific fixes for colors */
@supports (-webkit-backdrop-filter: blur(1px)) {
  body {
    -webkit-text-fill-color: initial;
  }
}

/* Safe area for iOS bottom bars so fixed footers don't overlap */
.safe-area-bottom {
  padding-bottom: calc(env(safe-area-inset-bottom) + 1rem) !important;
}

/* Buttons visibility on Safari: ensure contrast and transitions */
button {
  -webkit-tap-highlight-color: transparent;
}

/* SAM-MATH PWA Custom Styles */

/* Persian Font Loading */
@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@100;200;300;400;500;600;700;800;900&display=swap');

/* Root Variables */
:root {
    --primary: #1E3A8A;
    --success: #22C55E;
    --warning: #FACC15;
    --bg-light: #F9FAFB;
    --text-primary: #111827;
    --text-secondary: #374151;
    --border-color: #E5E7EB;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --border-radius: 0.5rem;
}

/* Base Styles */
* {
    box-sizing: border-box;
}

html {
    font-family: prk-font, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    direction: rtl;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-light);
    color: var(--text-primary);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-family: prk-font, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Custom Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInFromRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInFromLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.animate-fadeIn {
    animation: fadeIn 0.3s ease-out;
}

.animate-slideInRight {
    animation: slideInFromRight 0.3s ease-out;
}

.animate-slideInLeft {
    animation: slideInFromLeft 0.3s ease-out;
}

.animate-bounce {
    animation: bounce 2s infinite;
}

/* Card Styles */
.card {
    background: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.card-primary {
    border-color: var(--primary);
    background: #EFF6FF;
}

.card-success {
    border-color: var(--success);
    background: #F0FDF4;
}

.card-warning {
    border-color: var(--warning);
    background: #FFFBEB;
}

/* Button Enhancements */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.875rem;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background-color: #1E40AF;
    transform: translateY(-1px);
}

.btn-success {
    background-color: var(--success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background-color: #16A34A;
    transform: translateY(-1px);
}

.btn-warning {
    background-color: var(--warning);
    color: #1F2937;
}

.btn-warning:hover:not(:disabled) {
    background-color: #F59E0B;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: #F3F4F6;
    color: var(--text-secondary);
}

.btn-secondary:hover:not(:disabled) {
    background-color: #E5E7EB;
}

.btn-full {
    border-radius: 9999px;
}

/* Form Enhancements */
.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background-color: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input:invalid {
    border-color: #EF4444;
}

.form-checkbox {
    width: 1rem;
    height: 1rem;
    border-radius: 0.25rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.form-checkbox:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* Loading Spinner */
.spinner {
    width: 2rem;
    height: 2rem;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Toast Notifications */
.toast {
    position: fixed;
    top: 1rem;
    right: 1rem;
    max-width: 20rem;
    padding: 1rem;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 50;
    animation: slideInFromRight 0.3s ease-out;
}

.toast-success {
    background-color: var(--success);
}

.toast-error {
    background-color: #EF4444;
}

.toast-warning {
    background-color: var(--warning);
    color: #1F2937;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 0.5rem;
    background-color: #E5E7EB;
    border-radius: 9999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--primary);
    transition: width 0.3s ease;
    border-radius: 9999px;
}

/* Timer Styles */
.timer {
    background: linear-gradient(135deg, var(--primary), #1E40AF);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    font-weight: bold;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.timer.warning {
    background: linear-gradient(135deg, #EF4444, #DC2626);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

/* Question Styles */
.question-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
}

.question-text {
    line-height: 1.8;
    margin-bottom: 1rem;
}

.question-text img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: 0.5rem 0;
}

.option-item {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: white;
}

.option-item:hover {
    border-color: var(--primary);
    background-color: #EFF6FF;
}

.option-item.selected {
    border-color: var(--primary);
    background-color: #EFF6FF;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.option-item.correct {
    border-color: var(--success);
    background-color: #F0FDF4;
}

.option-item.incorrect {
    border-color: #EF4444;
    background-color: #FEF2F2;
}

/* Math Formula Styling */
.MathJax {
    font-size: 1em !important;
}

.MathJax_Display {
    margin: 0.5em 0 !important;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    .question-container {
        padding: 1rem;
    }
    
    .option-item {
        padding: 0.75rem;
    }
    
    .timer {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }
}

/* Print Styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card {
        border: 1px solid #ccc !important;
        box-shadow: none !important;
    }
    
    .btn {
        display: none !important;
    }
    
    .timer {
        display: none !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary: #000080;
        --success: #006400;
        --warning: #FF8C00;
        --text-primary: #000000;
        --text-secondary: #333333;
        --border-color: #666666;
    }
    
    .card {
        border-width: 2px;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .animate-spin {
        animation: none;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-light: #111827;
        --text-primary: #F9FAFB;
        --text-secondary: #D1D5DB;
        --border-color: #374151;
    }
    
    body {
        background-color: var(--bg-light);
        color: var(--text-primary);
    }
    
    .card {
        background-color: #1F2937;
        border-color: var(--border-color);
    }
    
    .form-input {
        background-color: #1F2937;
        border-color: var(--border-color);
        color: var(--text-primary);
    }
    
    .question-container {
        background-color: #1F2937;
    }
    
    .option-item {
        background-color: #1F2937;
        border-color: var(--border-color);
    }
}

/* Accessibility Improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.focus-visible:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 100;
}

.skip-link:focus {
    top: 6px;
}

/* Error States */
.error-message {
    color: #EF4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.field-error .form-input {
    border-color: #EF4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Success States */
.success-message {
    color: var(--success);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* Custom Scrollbar for Mobile */
@supports (-webkit-touch-callout: none) {
    .scroll-container {
        -webkit-overflow-scrolling: touch;
    }
}

/* MathJax Formula Overflow Handling */
.MathJax,
.MathJax_Display,
mjx-container,
mjx-math {
    max-width: 100% !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    display: inline-block !important;
}

/* MathJax در موبایل */
@media (max-width: 640px) {
    .MathJax,
    mjx-container {
        font-size: 0.9em !important;
    }
    
    mjx-math {
        max-width: 100% !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
    }
}

/* جلوگیری از overflow در گزینه‌ها */
.prose {
    max-width: 100% !important;
}

.prose mjx-container {
    display: inline-block;
    max-width: 100%;
    overflow-x: auto;
}

/* Prevent horizontal scroll on body */
body {
    overflow-x: hidden;
}

/* Container برای محتوای فرمول */
.math-content {
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}