/**
 * ملف CSS الموحد لباحث البيانات
 * يجمع جميع الأنماط في مكان واحد
 * @version 2.0.0
 */

/* ===== متغيرات CSS ===== */
:root {
  --color-primary: #10B981;
  --color-secondary: #1F2937;
  --color-dark: #0F172A;
  --color-accent: #06B6D4;
  --color-success: #22C55E;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;
  
  --glass-bg-light: rgba(255, 255, 255, 0.12);
  --glass-bg-dark: rgba(15, 23, 42, 0.35);
  --glass-border-light: rgba(255, 255, 255, 0.15);
  --glass-border-dark: rgba(255, 255, 255, 0.06);
  
  --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);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
  
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

/* ===== إعادة تعيين أساسية ===== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Noto Sans Arabic', 'Plus Jakarta Sans', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== تأثير الزجاج (Glass Morphism) ===== */
.glass {
  background: var(--glass-bg-light);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border-light);
}

.dark .glass {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

.glassmorphism {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.dark .glassmorphism {
  background: rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== بطاقة الزجاج ===== */
.glass-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 1rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.dark .glass-card {
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== الأزرار والرقاقات ===== */
.chip {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  cursor: pointer;
}

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

.chip:active {
  transform: translateY(1px);
}

.chip.active,
.chip.selected {
  background: var(--color-primary) !important;
  color: white !important;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.3);
}

/* ===== عنصر لوحة المفاتيح ===== */
.kbd {
  display: inline-block;
  padding: 0.125rem 0.375rem;
  font-size: 0.75rem;
  font-family: ui-monospace, monospace;
  background: rgba(148, 163, 184, 0.1);
  border: 1px solid rgba(148, 163, 184, 0.4);
  border-bottom-width: 2px;
  border-radius: 0.375rem;
}

/* ===== حبات البحث ===== */
.search-pill {
  transition: all var(--transition-normal);
}

.search-pill:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ===== تأثير الحدود المتدرجة ===== */
.gradient-border {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
}

.gradient-border::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(45deg, 
    var(--color-primary), 
    var(--color-accent), 
    #3b82f6, 
    var(--color-primary)
  );
  background-size: 400% 400%;
  animation: gradient 8s ease infinite;
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.gradient-border:hover::before {
  opacity: 1;
}

@keyframes gradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ===== تأثير اللمعان ===== */
.shimmer {
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0) 0%, 
    rgba(255, 255, 255, 0.2) 25%, 
    rgba(255, 255, 255, 0.2) 50%, 
    rgba(255, 255, 255, 0) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 2s linear infinite;
}

.dark .shimmer {
  background: linear-gradient(90deg, 
    rgba(15, 23, 42, 0) 0%, 
    rgba(15, 23, 42, 0.3) 25%, 
    rgba(15, 23, 42, 0.3) 50%, 
    rgba(15, 23, 42, 0) 100%
  );
  background-size: 200% 100%;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== الظهور التدريجي ===== */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}

.fade-up.appear {
  opacity: 1;
  transform: translateY(0);
}

/* ===== الحركات المخصصة ===== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes fadeIn {
  from { 
    opacity: 0; 
    transform: translateY(8px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

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

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

@keyframes pulse-slow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-float { animation: float 5s ease-in-out infinite; }
.animate-fade-in { animation: fadeIn 0.5s ease-out both; }
.animate-slide-up { animation: slideUp 0.3s ease-out; }
.animate-slide-down { animation: slideDown 0.3s ease-out; }
.animate-pulse-slow { animation: pulse-slow 3s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* ===== شريط التمرير المخصص ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
  border-radius: 4px;
}

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

::-webkit-scrollbar-thumb:hover {
  background: #0d9668;
}

.dark ::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== حقول الإدخال ===== */
input, textarea, select {
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.2);
}

/* ===== البطاقات ===== */
.card {
  background: var(--glass-bg-light);
  backdrop-filter: blur(10px);
  border-radius: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--glass-border-light);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.dark .card {
  background: var(--glass-bg-dark);
  border-color: var(--glass-border-dark);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ===== الجداول ===== */
.table-container {
  overflow-x: auto;
  border-radius: 0.75rem;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: right;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.dark th, .dark td {
  border-color: rgba(255, 255, 255, 0.1);
}

th {
  background: rgba(0, 0, 0, 0.05);
  font-weight: 600;
}

.dark th {
  background: rgba(255, 255, 255, 0.05);
}

tr:hover {
  background: rgba(16, 185, 129, 0.05);
}

/* ===== الشارات ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
}

.badge-primary { background: rgba(16, 185, 129, 0.15); color: var(--color-primary); }
.badge-success { background: rgba(34, 197, 94, 0.15); color: var(--color-success); }
.badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--color-warning); }
.badge-error { background: rgba(239, 68, 68, 0.15); color: var(--color-error); }
.badge-info { background: rgba(59, 130, 246, 0.15); color: var(--color-info); }

/* ===== التنبيهات ===== */
.alert {
  padding: 1rem;
  border-radius: 0.75rem;
  border-width: 1px;
  border-right-width: 4px;
}

.alert-success {
  background: rgba(34, 197, 94, 0.1);
  border-color: var(--color-success);
  color: #166534;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--color-warning);
  color: #92400e;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--color-error);
  color: #991b1b;
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--color-info);
  color: #1e40af;
}

.dark .alert-success { color: #86efac; }
.dark .alert-warning { color: #fcd34d; }
.dark .alert-error { color: #fca5a5; }
.dark .alert-info { color: #93c5fd; }

/* ===== النماذج ===== */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.form-hint {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: #6b7280;
}

.dark .form-hint {
  color: #9ca3af;
}

/* ===== الهيكل العظمي للتحميل ===== */
.skeleton {
  background: linear-gradient(90deg, 
    rgba(0, 0, 0, 0.06) 25%, 
    rgba(0, 0, 0, 0.1) 37%, 
    rgba(0, 0, 0, 0.06) 63%
  );
  background-size: 400% 100%;
  animation: skeleton 1.4s ease infinite;
}

.dark .skeleton {
  background: linear-gradient(90deg, 
    rgba(255, 255, 255, 0.06) 25%, 
    rgba(255, 255, 255, 0.1) 37%, 
    rgba(255, 255, 255, 0.06) 63%
  );
  background-size: 400% 100%;
}

@keyframes skeleton {
  0% { background-position: 100% 50%; }
  100% { background-position: 0 50%; }
}

/* ===== تحسينات إمكانية الوصول ===== */
.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 {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== التوافق مع الموبايل ===== */
@media (max-width: 640px) {
  .card {
    padding: 1rem;
  }
  
  th, td {
    padding: 0.5rem;
    font-size: 0.875rem;
  }
}

/* ===== التنسيق للطباعة ===== */
@media print {
  .no-print {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .glass, .glassmorphism {
    background: white !important;
    backdrop-filter: none !important;
    border: 1px solid #e5e7eb !important;
  }
}

/* ===== تأثيرات التحويم للروابط ===== */
a {
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary);
}

/* ===== تخصيص الإشعارات ===== */
#app-notification {
  box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.3);
}

/* ===== تحسين الأداء ===== */
.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}

/* ===== تنسيق RTL/LTR ===== */
[dir="rtl"] .flip-rtl {
  transform: scaleX(-1);
}

/* ===== حالة التحميل للأزرار ===== */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 1rem;
  height: 1rem;
  top: 50%;
  left: 50%;
  margin-left: -0.5rem;
  margin-top: -0.5rem;
  border: 2px solid currentColor;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.8s linear infinite;
}

/* ===== تعريفات الأزرار ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--glass-bg-light);
  color: var(--color-secondary);
  border: 1px solid var(--glass-border-light);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.dark .btn-secondary {
  background: var(--glass-bg-dark);
  color: white;
  border-color: var(--glass-border-dark);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.dark .btn-secondary:hover:not(:disabled) {
  background: rgba(15, 23, 42, 0.5);
}

/* ===== أنماط التحسينات ===== */

/* Toast Notifications */
@keyframes bounce-in {
  0% { transform: translateX(-50%) scale(0.8); opacity: 0; }
  50% { transform: translateX(-50%) scale(1.05); }
  100% { transform: translateX(-50%) scale(1); opacity: 1; }
}

@keyframes fadeOut {
  to { opacity: 0; transform: translateX(-50%) translateY(10px); }
}

.animate-bounce-in {
  animation: bounce-in 0.4s ease-out;
}

/* Screen Reader Only */
.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;
}

.sr-only:focus, .focus\:not-sr-only:focus {
  position: fixed;
  width: auto;
  height: auto;
  padding: 0;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Lazy Animation */
.lazy-animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reading Mode */
.reading-mode {
  --color-primary: #F59E0B;
}

.reading-mode main {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.8;
}

.reading-mode .glass-card {
  background: rgba(255, 248, 240, 0.95);
}

.dark.reading-mode .glass-card {
  background: rgba(30, 30, 25, 0.95);
}

/* Focus Styles للوصولية */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* تحسين الطباعة */
@media print {
  #share-buttons,
  #back-to-top,
  #reading-progress,
  #reading-mode-btn,
  header,
  footer,
  .no-print {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .glass-card {
    background: white !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
}

/* تحسينات للجوال */
@media (max-width: 640px) {
  #share-buttons {
    bottom: auto;
    top: 50%;
    transform: translateY(-50%);
    left: 0;
    padding: 8px;
    background: rgba(0,0,0,0.3);
    border-radius: 0 8px 8px 0;
  }
  
  #share-buttons button {
    width: 36px;
    height: 36px;
  }
}

/* Smooth Scroll Anchor */
html {
  scroll-padding-top: 80px;
}

/* Selection Color */
::selection {
  background: var(--color-primary);
  color: white;
}

::-moz-selection {
  background: var(--color-primary);
  color: white;
}
/* ===== FAQ - الأسئلة الشائعة ===== */
.faq-item {
  transition: all var(--transition-normal);
}

.faq-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.faq-toggle {
  cursor: pointer;
}

.faq-icon {
  transition: transform var(--transition-normal);
}

.faq-content {
  animation: fadeIn 0.3s ease;
}

.faq-content.hidden {
  display: none;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* تحسين FAQ للجوال */
@media (max-width: 640px) {
  #faq-section h2 {
    font-size: 1.25rem;
  }
  
  .faq-toggle span {
    font-size: 0.875rem;
  }
  
  .faq-content p {
    font-size: 0.8125rem;
  }
}