/* ==========================================================
   FATH Design System: Stylesheet
   Modern Corporate & Tactile Precision for Educational Tech
   ========================================================== */

:root {
  --primary: #159A85;
  --primary-hover: #0F766E;
  --primary-container: #008471;
  --teal-surface: #F0FDF9;
  --teal-subtle: #CCFBF1;
  --secondary: #192A45;
  --navy-deep: #0E1726;
  --navy-surface: #F8FAFC;
  --tertiary: #38B2AC;
  --canvas-base: #FFFFFF;
  --border-subtle: #E2E8F0;
  --on-surface: #0F172A;
  --on-surface-variant: #475569;
  --text-muted: #94A3B8;
  --accent-gold: #D97706;
  --accent-gold-bg: #FFFBEB;
}

html {
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: #FFFFFF;
  color: #475569;
  font-family: 'IBM Plex Sans', 'IBM Plex Sans Arabic', system-ui, -apple-system, sans-serif;
  line-height: 1.6;
}

html[lang="ar"] body {
  font-family: 'IBM Plex Sans Arabic', 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  color: #0F172A;
  font-family: 'IBM Plex Sans', 'IBM Plex Sans Arabic', system-ui, -apple-system, sans-serif;
  letter-spacing: -0.01em;
}

html[lang="ar"] h1,
html[lang="ar"] h2,
html[lang="ar"] h3,
html[lang="ar"] h4,
html[lang="ar"] h5,
html[lang="ar"] h6 {
  font-family: 'IBM Plex Sans Arabic', 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
}

/* Force headings on dark surfaces to pure crisp white */
.text-white h1, .text-white h2, .text-white h3, .text-white h4, .text-white h5, .text-white h6,
[class*="bg-[#192A45]"] h1, [class*="bg-[#192A45]"] h2, [class*="bg-[#192A45]"] h3, [class*="bg-[#192A45]"] h4, [class*="bg-[#192A45]"] h5, [class*="bg-[#192A45]"] h6,
[class*="bg-[#0E1726]"] h1, [class*="bg-[#0E1726]"] h2, [class*="bg-[#0E1726]"] h3, [class*="bg-[#0E1726]"] h4, [class*="bg-[#0E1726]"] h5, [class*="bg-[#0E1726]"] h6,
[class*="bg-slate-900"] h1, [class*="bg-slate-900"] h2, [class*="bg-slate-900"] h3, [class*="bg-slate-900"] h4,
footer h1, footer h2, footer h3, footer h4, footer h5, footer h6 {
  color: #FFFFFF !important;
}

h1.text-white, h2.text-white, h3.text-white, h4.text-white, h5.text-white, h6.text-white {
  color: #FFFFFF !important;
}

/* Background Grids & Ambient Lighting */
.bg-subtle-grid {
  background-image:
    linear-gradient(rgba(25, 42, 69, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 42, 69, 0.035) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 40%, rgba(0,0,0,0) 80%);
}

.blob {
  position: absolute;
  border-radius: 9999px;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.15;
}

/* Elevation Levels */
.level-0 {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  box-shadow: none;
}

.level-1 {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  box-shadow: 0px 2px 8px -2px rgba(25, 42, 69, 0.05), 0px 1px 3px 0px rgba(25, 42, 69, 0.03);
}

.level-2 {
  box-shadow: 0px 12px 24px -6px rgba(25, 42, 69, 0.08), 0px 4px 8px -2px rgba(21, 154, 133, 0.04);
}

.level-3 {
  box-shadow: 0px 20px 32px -8px rgba(14, 23, 38, 0.14);
}

/* Cards & Containers */
.card {
  background-color: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 1rem;
  box-shadow: 0px 2px 8px -2px rgba(25, 42, 69, 0.05), 0px 1px 3px 0px rgba(25, 42, 69, 0.03);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card-hover:hover {
  transform: translateY(-2px);
  border-color: #CBD5E1;
  box-shadow: 0px 12px 24px -6px rgba(25, 42, 69, 0.08), 0px 4px 8px -2px rgba(21, 154, 133, 0.04);
}

.card-accent-strip {
  position: relative;
  overflow: hidden;
}
.card-accent-strip::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #159A85, #38B2AC);
  border-radius: 1rem 1rem 0 0;
}

.card-accent-gold::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #D97706, #F59E0B);
  border-radius: 1rem 1rem 0 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.625rem 1.25rem;
  border-radius: 0.5rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background-color: #159A85;
  color: #FFFFFF;
  box-shadow: 0 1px 2px 0 rgba(21, 154, 133, 0.15);
}
.btn-primary:hover {
  background-color: #0F766E;
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0px 8px 16px -4px rgba(21, 154, 133, 0.25);
}

.btn-secondary {
  background-color: #192A45;
  color: #FFFFFF;
  box-shadow: 0 1px 2px 0 rgba(25, 42, 69, 0.12);
}
.btn-secondary:hover {
  background-color: #0E1726;
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0px 8px 16px -4px rgba(14, 23, 38, 0.25);
}

.btn-outline {
  background-color: transparent;
  border: 1.5px solid #159A85;
  color: #159A85;
}
.btn-outline:hover {
  background-color: #F0FDF9;
  border-color: #0F766E;
  color: #0F766E;
  transform: translateY(-1px);
}

.btn-ghost {
  background-color: transparent;
  color: #192A45;
}
.btn-ghost:hover {
  background-color: #F1F5F9;
  color: #0E1726;
}

/* Badges & Chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  line-height: 1.25rem;
  letter-spacing: 0.01em;
}

.chip-teal {
  background-color: #F0FDF9;
  color: #0F766E;
  border: 1px solid #CCFBF1;
}

.chip-neutral {
  background-color: #F8FAFC;
  color: #475569;
  border: 1px solid #E2E8F0;
}

.chip-navy {
  background-color: #F1F5F9;
  color: #192A45;
  border: 1px solid #E2E8F0;
}

.chip-gold {
  background-color: #FFFBEB;
  color: #B45309;
  border: 1px solid #FDE68A;
}

/* Inputs & Form Fields */
.form-input {
  height: 44px;
  border-radius: 0.5rem;
  border: 1px solid #E2E8F0;
  background-color: #FFFFFF;
  color: #0F172A;
  padding: 0.5rem 0.875rem;
  font-size: 0.925rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
  border-color: #159A85;
  box-shadow: 0 0 0 3px rgba(21, 154, 133, 0.18);
  outline: none;
}

/* Typography Gradients */
.text-gradient-teal {
  background: linear-gradient(135deg, #159A85 0%, #006859 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.text-gradient-navy {
  background: linear-gradient(135deg, #0F172A 0%, #192A45 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.text-gradient-gold {
  background: linear-gradient(135deg, #D97706 0%, #B45309 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Logo container & crop */
.logo-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #192A45 0%, #0E1726 100%);
  border-radius: 0.625rem;
  box-shadow: 0 2px 6px rgba(25, 42, 69, 0.16);
  flex-shrink: 0;
  overflow: hidden;
}

.logo-crop {
  display: inline-block;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}
.logo-crop img {
  position: absolute;
  width: 175%;
  max-width: none;
  height: auto;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -47%);
}

/* Scroll reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.animate-float {
  animation: float 6s ease-in-out infinite;
}

/* Progress bar */
.progress-track {
  height: 8px;
  background-color: #E2E8F0;
  border-radius: 9999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #159A85, #38B2AC);
  border-radius: 9999px;
  transition: width 0.4s ease;
}

/* Accessibility Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .animate-float {
    animation: none;
  }
}