/* ============================================================
   Notra Health — Design System & Global Styles
   نوترا هيلث — نظام التصميم والأنماط العامة
   ============================================================ */

/* ─── Google Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Tajawal:wght@300;400;500;700;800;900&family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── CSS Custom Properties (Design Tokens) ─── */
:root {
  /* Primary — from Nutra logo */
  --color-primary: #C62828;
  --color-primary-dark: #8E0000;
  --color-primary-light: #FF5F52;
  --color-primary-50: rgba(198, 40, 40, 0.08);
  --color-primary-100: rgba(198, 40, 40, 0.15);
  --color-primary-200: rgba(198, 40, 40, 0.25);

  /* Surfaces — Dark theme */
  --color-bg: #0A0A1A;
  --color-surface: #12122A;
  --color-surface-alt: #1A1A3E;
  --color-surface-hover: #222252;
  --color-surface-glass: rgba(26, 26, 62, 0.65);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(198, 40, 40, 0.4);

  /* Text */
  --color-text: #F5F5F5;
  --color-text-secondary: #9E9EB8;
  --color-text-muted: #6B6B8A;

  /* Status */
  --color-success: #00C853;
  --color-warning: #FFD600;
  --color-error: #FF1744;
  --color-info: #448AFF;

  /* Typography */
  --font-ar: 'Tajawal', 'Segoe UI', sans-serif;
  --font-en: 'Inter', 'Tajawal', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(198, 40, 40, 0.2);
  --shadow-glow-strong: 0 0 60px rgba(198, 40, 40, 0.35);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;
}

/* ─── Reset & Base ─── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  direction: rtl;
  font-family: var(--font-ar);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-ar);
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  color: var(--color-text-secondary);
  line-height: 1.8;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary); }

/* Numbers in English font */
.num, [data-num] {
  font-family: var(--font-en);
  direction: ltr;
  unicode-bidi: isolate;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-surface);
}
::-webkit-scrollbar-thumb {
  background: var(--color-primary-200);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* ─── Selection ─── */
::selection {
  background: var(--color-primary-200);
  color: var(--color-text);
}

/* ─── Animations ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

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

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

.animate-fadeInUp   { animation: fadeInUp 0.6s ease-out both; }
.animate-fadeIn     { animation: fadeIn 0.5s ease-out both; }
.animate-slideRight { animation: slideInRight 0.5s ease-out both; }
.animate-slideLeft  { animation: slideInLeft 0.5s ease-out both; }
.animate-pulse      { animation: pulse 2s ease-in-out infinite; }
.animate-float      { animation: float 3s ease-in-out infinite; }

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* ─── Layout Utilities ─── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-lg {
  max-width: 1400px;
}

.flex       { display: flex; }
.flex-col   { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-sm     { gap: var(--space-sm); }
.gap-md     { gap: var(--space-md); }
.gap-lg     { gap: var(--space-lg); }
.gap-xl     { gap: var(--space-xl); }
.gap-2xl    { gap: var(--space-2xl); }

.grid       { display: grid; }
.grid-2     { grid-template-columns: repeat(2, 1fr); }
.grid-3     { grid-template-columns: repeat(3, 1fr); }
.grid-4     { grid-template-columns: repeat(4, 1fr); }

.text-center { text-align: center; }
.text-right  { text-align: right; }

/* ─── Components ─── */

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-ar);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn:hover::after { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-strong);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--color-surface-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary-light);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-200);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Card */
.card {
  background: var(--color-surface-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.card-flat {
  background: var(--color-surface);
  backdrop-filter: none;
}
.card-flat:hover { transform: none; }

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-primary { background: var(--color-primary-100); color: var(--color-primary-light); }
.badge-success { background: rgba(0, 200, 83, 0.15); color: var(--color-success); }
.badge-warning { background: rgba(255, 214, 0, 0.15); color: var(--color-warning); }
.badge-error   { background: rgba(255, 23, 68, 0.15); color: var(--color-error); }
.badge-info    { background: rgba(68, 138, 255, 0.15); color: var(--color-info); }

.badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* Input */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.input-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.input {
  width: 100%;
  padding: 14px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-ar);
  font-size: 1rem;
  transition: all var(--transition-fast);
  direction: rtl;
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-50);
}

.input::placeholder {
  color: var(--color-text-muted);
}

/* Section */
.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section-title {
  margin-bottom: var(--space-md);
}

.section-subtitle {
  color: var(--color-text-secondary);
  font-size: 1.15rem;
  margin-bottom: var(--space-2xl);
  max-width: 600px;
}

/* Icon wrapper */
.icon-box {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-50);
  color: var(--color-primary-light);
  font-size: 1.5rem;
  flex-shrink: 0;
}

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Decorative orbs */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.orb-red {
  background: radial-gradient(circle, rgba(198, 40, 40, 0.25), transparent 70%);
}
.orb-blue {
  background: radial-gradient(circle, rgba(68, 138, 255, 0.12), transparent 70%);
}

/* Divider */
.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
  border-radius: var(--radius-full);
  margin: var(--space-md) 0;
}

/* Stat */
.stat {
  text-align: center;
}
.stat-value {
  font-family: var(--font-en);
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-md); }
  .grid-4 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .section { padding: var(--space-3xl) 0; }
  .hide-mobile { display: none !important; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  .btn-lg { padding: 14px 24px; font-size: 1rem; }
}