:root {
  --bs-body-font-family: 'Noto Sans Arabic', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --bs-body-bg: #f8f9fa;
  --bs-body-color: #212529;
  /* Card & Hero defaults */
  --bs-hero-bg: linear-gradient(135deg, #6a11cb, #2575fc);
  --bs-card-bg: #ffffff;
  --bs-card-text: #212529;
  
  /* New color scheme */
  --primary-color: #4361ee;
  --secondary-color: #3f37c9;
  --accent-color: #4cc9f0;
  --success-color: #4caf50;
  --info-color: #2196f3;
  --warning-color: #ff9800;
  --danger-color: #f44336;
  --light-color: #f8f9fa;
  --dark-color: #212529;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
}

[data-bs-theme="dark"] {
  /* أساسيات الوضع الليلي */
  --bs-body-bg: #212537;
  --bs-body-color: #e0e0e0;
  
  /* خلفيات البطاقات والقسم الرئيسي */
  --bs-hero-bg: linear-gradient(135deg, #2b2473, #3a56e4);
  --bs-card-bg: #2f3349;
  --bs-card-text: #e0e0e0;
  
  /* ألوان الوضع الليلي */
  --primary-color: #5b7cff;
  --secondary-color: #4a5de3;
  --accent-color: #4cc9f0;
  --success-color: #4ecca3;
  --info-color: #64b5f6;
  --warning-color: #ffb74d;
  --danger-color: #ff5252;
  --light-color: #f8f9fa;
  --dark-color: #121212;
  
  /* تدرجات الرمادي للوضع الليلي */
  --gray-100: #2f3349;
  --gray-200: #2f3349;
  --gray-300: #3d3d3d;
  --gray-400: #5c5c5c;
  --gray-500: #7e7e7e;
  --gray-600: #a0a0a0;
  --gray-700: #c1c1c1;
  --gray-800: #e0e0e0;
  --gray-900: #f5f5f5;
  
  /* ألوان إضافية للوضع الليلي */
  --bs-border-color: #3d3d3d;
  --bs-navbar-bg: #212537;
  --bs-form-bg: #2f3349;
  --bs-input-bg: #2f3349;
  --bs-input-border: #3d3d3d;
  --bs-input-color: #e0e0e0;
  --bs-input-focus-border: #5b7cff;
  --bs-input-focus-shadow: rgba(91, 124, 255, 0.25);
}

body {
  font-family: var(--bs-body-font-family);
  background-color: var(--bs-body-bg);
  color: var(--bs-body-color);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* تأثيرات انتقالية سلسة للعناصر عند تغيير الوضع */
.card, .navbar, .form-control, .btn, .hero, .step-card, .event-log, .feature-card, .feature-icon {
  transition: all 0.3s ease;
}

/* تحسين زر تبديل الوضع الليلي */
#theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}

[data-bs-theme="dark"] #theme-toggle {
  background-color: var(--gray-300);
  color: var(--gray-900);
  border-color: var(--gray-400);
}

[data-bs-theme="dark"] #theme-toggle .bi-moon-stars {
  color: var(--accent-color);
}

.card {
  background: #2f3349;
  color: var(--bs-card-text);
  border: none;
  border-radius: 1rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.card:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

[data-bs-theme="dark"] .card {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  border: 1px solid var(--bs-border-color);
}

[data-bs-theme="dark"] .card:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  border-color: var(--gray-400);
}

[data-bs-theme="dark"] .card.feature-card {
  background: linear-gradient(145deg, var(--bs-card-bg), #2f3349);
  border: none;
}

[data-bs-theme="dark"] .card.shadow-lg {
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.35) !important;
}

/* Hero banner styling */
.hero {
  background: var(--bs-hero-bg);
  color: #fff;
  padding: 4rem 0;
  border-radius: 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

[data-bs-theme="dark"] .hero {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

[data-bs-theme="dark"] .hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at top right, rgba(76, 201, 240, 0.1), transparent 70%);
  pointer-events: none;
}

/* Arabic text styling */
[lang="ar"] h1, [lang="ar"] h2, [lang="ar"] p, [lang="ar"] .lead, [lang="ar"] .form-text, [lang="ar"] .form-check-label, [lang="ar"] .btn {
  font-family: 'Noto Sans Arabic', sans-serif;
  letter-spacing: 0;
}

.display-5, .lead, .form-text {
  font-weight: 400;
}

.btn {
  font-weight: 700;
  border-radius: 0.5rem;
  padding: 0.6rem 1.5rem;
}

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

.btn-primary:hover {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
}

[data-bs-theme="dark"] .btn-outline-secondary {
  color: var(--gray-700);
  border-color: var(--gray-500);
}

[data-bs-theme="dark"] .btn-outline-secondary:hover {
  background-color: var(--gray-300);
  color: var(--gray-900);
  border-color: var(--gray-400);
}

[data-bs-theme="dark"] .btn-light {
  background-color: var(--gray-300);
  color: var(--gray-900);
  border-color: var(--gray-400);
}

/* Navigation */
.navbar {
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
  padding: 1rem 0;
}

[data-bs-theme="dark"] .navbar {
  background-color: var(--bs-navbar-bg) !important;
  box-shadow: 0 2px 15px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
  font-weight: 800;
  color: var(--primary-color);
  font-size: 1.5rem;
}

/* Features section */
.feature-card {
  text-align: center;
  padding: 2rem;
  height: 100%;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

[data-bs-theme="dark"] .feature-icon {
  color: var(--accent-color);
  text-shadow: 0 0 10px rgba(76, 201, 240, 0.3);
}

/* About section */
.about-section {
  background-color: #212537;
  padding: 4rem 0;
}

[data-bs-theme="dark"] a {
  color: var(--accent-color);
  text-decoration: none;
}

[data-bs-theme="dark"] a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

[data-bs-theme="dark"] .text-muted {
  color: var(--gray-600) !important;
}

[data-bs-theme="dark"] .border {
  border-color: var(--bs-border-color) !important;
}

[data-bs-theme="dark"] .shadow-sm {
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.2) !important;
}

/* How to use section */
.how-to-use {
  padding: 4rem 0;
}

.step-card {
  border-left: 4px solid var(--primary-color);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  background-color: var(--bs-card-bg);
  border-radius: 0.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.step-number {
  display: inline-block;
  width: 30px;
  height: 30px;
  line-height: 30px;
  text-align: center;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  margin-right: 0.5rem;
}

/* Form styling */
.form-control {
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(67, 97, 238, 0.25);
}

[data-bs-theme="dark"] .form-control {
  background-color: var(--bs-input-bg);
  border-color: var(--bs-input-border);
  color: var(--bs-input-color);
}

[data-bs-theme="dark"] .form-control:focus {
  border-color: var(--bs-input-focus-border);
  box-shadow: 0 0 0 0.25rem var(--bs-input-focus-shadow);
}

[data-bs-theme="dark"] .form-select {
  background-color: var(--bs-input-bg);
  border-color: var(--bs-input-border);
  color: var(--bs-input-color);
}

[data-bs-theme="dark"] .form-select:focus {
  border-color: var(--bs-input-focus-border);
  box-shadow: 0 0 0 0.25rem var(--bs-input-focus-shadow);
}

.form-label {
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-text {
  color: var(--gray-600);
}

[data-bs-theme="dark"] .form-text {
  color: var(--gray-500);
}

[data-bs-theme="dark"] .form-label {
  color: var(--gray-700);
}

/* Event log */
.event-log {
  height: 200px;
  overflow-y: auto;
  background-color: var(--gray-100);
  border-radius: 0.5rem;
  padding: 1rem;
  border: 1px solid var(--gray-300);
  margin-top: 1.5rem;
}

[data-bs-theme="dark"] .event-log {
  background-color: var(--gray-200);
  border-color: var(--bs-border-color);
}

[data-bs-theme="dark"] .bg-light {
  background-color: var(--gray-100) !important;
}

[data-bs-theme="dark"] .bg-body-tertiary {
  background-color: var(--bs-navbar-bg) !important;
}

[data-bs-theme="dark"] .step-card {
  background-color: var(--bs-card-bg);
  border-color: var(--primary-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

[data-bs-theme="dark"] .alert-success {
  background-color: rgba(78, 204, 163, 0.15);
  color: var(--success-color);
  border-color: rgba(78, 204, 163, 0.3);
}

[data-bs-theme="dark"] .alert-danger {
  background-color: rgba(255, 82, 82, 0.15);
  color: var(--danger-color);
  border-color: rgba(255, 82, 82, 0.3);
  font-family: monospace;
}

.log-entry {
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--gray-300);
}

.log-entry:last-child {
  border-bottom: none;
}

.log-time {
  color: var(--gray-600);
  font-size: 0.85rem;
}

.log-message {
  margin-left: 0.5rem;
}

.log-success {
  color: var(--success-color);
}

.log-error {
  color: var(--danger-color);
}

.log-info {
  color: var(--info-color);
}

/* Footer */
.footer {
  background-color: var(--gray-800);
  color: white;
  padding: 3rem 0;
  margin-top: 4rem;
}

/* Dark mode specific overrides */
[data-bs-theme="dark"] .bg-light,
[data-bs-theme="dark"] #features,
[data-bs-theme="dark"] #main-form {
  background-color: var(--bs-body-bg) !important;
}

[data-bs-theme="dark"] .bg-body-tertiary {
  background-color: #212537 !important;
}

[data-bs-theme="dark"] .footer {
  background-color: #212537;
  color: #e0e0e0;
  border-top: 1px solid var(--gray-700);
}

[data-bs-theme="dark"] .list-group-item {
  background-color: transparent;
  color: var(--bs-card-text);
  border-color: var(--gray-700);
}

[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
  background-color: #2f3349;
  border-color: var(--gray-700);
  color: var(--bs-card-text);
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
  background-color: #333;
  color: var(--bs-card-text);
}

[data-bs-theme="dark"] .form-text {
  color: #e0e0e0;
}

[data-bs-theme="dark"] .event-log {
  background-color: #2f3349;
  border-color: var(--gray-700);
  color: var(--bs-card-text);
}

[data-bs-theme="dark"] .log-time {
  color: var(--gray-400);
}

[data-bs-theme="dark"] a {
  color: var(--accent-color);
}

[data-bs-theme="dark"] a:hover {
  color: #7dd3f7;
}

/* Animations - Disabled */
@keyframes fadeIn {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: none;
  opacity: 1;
  transform: translateY(0);
}

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

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero {
    padding: 2rem 0;
  }
  
  .feature-card {
    margin-bottom: 1.5rem;
  }
  
  .navbar-brand {
    font-size: 1.2rem;
  }
  
  h1.display-4 {
    font-size: 2.2rem;
  }
  
  .lead.fs-4 {
    font-size: 1.1rem !important;
  }
  
  .btn-lg {
    padding: 0.5rem 1.5rem;
    font-size: 1rem;
  }
  
  .step-card {
    padding: 1rem;
  }
}

@media (max-width: 576px) {
  .hero {
    padding: 1.5rem 0;
  }
  
  h1.display-4 {
    font-size: 1.8rem;
  }
  
  .lead.fs-4 {
    font-size: 1rem !important;
  }
  
  .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  
  .card {
    border-radius: 0.75rem;
  }
  
  .form-control, .form-select {
    font-size: 1rem;
  }
  
  .btn-lg {
    width: 100%;
  }
}

/* Improve touch targets for mobile */
@media (max-width: 992px) {
  .btn, .form-control, .form-select, .navbar-toggler {
    min-height: 44px; /* Apple's recommended minimum touch target size */
  }
  
  .nav-link {
    padding: 0.75rem 1rem;
  }
  
  .navbar-nav {
    margin: 1rem 0;
  }
}

/* Print styles */
@media print {
  .navbar, .hero, .footer, #theme-toggle, .feature-card, .how-to-use, #about {
    display: none !important;
  }
  
  #main-form {
    margin: 0;
    padding: 0;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
  
  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }
}

/* Fix iOS input styling */
input, textarea {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border-radius: 0.5rem;
}

/* Better focus states for accessibility */
a:focus, button:focus, input:focus, select:focus, textarea:focus, [tabindex]:focus {
  outline: 3px solid rgba(67, 97, 238, 0.5);
  outline-offset: 2px;
}

/* Smooth scrolling disabled to prevent flashing */
html {
  scroll-behavior: auto;
}

/* Prevent content from being hidden under fixed navbar */
:target {
  scroll-margin-top: 80px;
}

/* Improve form element spacing on mobile */
@media (max-width: 768px) {
  .form-control, .form-select {
    margin-bottom: 0.5rem;
  }
  
  .mb-3 {
    margin-bottom: 1rem !important;
  }
}

/* Optimize images for high DPI screens */
img {
  max-width: 100%;
  height: auto;
}

/* Ensure proper text rendering */
* {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Fix for mobile Safari 100vh issue */
.min-vh-100 {
  min-height: 100vh;
  min-height: -webkit-fill-available;
}

html {
  height: -webkit-fill-available;
}

/* Improve loading performance */
body {
  display: block;
}