/* =====================================================
   Aviation License™ — Design System Variables
   Aviation-themed dark UI with premium aesthetics
   ===================================================== */

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

:root {
  /* ── Color Palette ─────────────────────────────── */
  /* Primary: Deep Navy (Authority) */
  --color-primary-900: #050d1a;
  --color-primary-800: #0a1628;
  --color-primary-700: #0f2035;
  --color-primary-600: #142a42;
  --color-primary-500: #1a3550;
  --color-primary-400: #2a4a6b;
  --color-primary-300: #3d6087;
  --color-primary-200: #5c80a8;
  --color-primary-100: #8faac8;

  /* Accent: Sky Cyan (Technology) */
  --color-accent-500: #00d4ff;
  --color-accent-400: #33ddff;
  --color-accent-300: #66e6ff;
  --color-accent-200: #99eeff;
  --color-accent-glow: rgba(0, 212, 255, 0.15);
  --color-accent-glow-strong: rgba(0, 212, 255, 0.3);

  /* Gold: Amber (Certification/Achievement) */
  --color-gold-500: #ffb800;
  --color-gold-400: #ffc933;
  --color-gold-300: #ffd966;
  --color-gold-glow: rgba(255, 184, 0, 0.15);

  /* Status Colors */
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.12);
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.12);
  --color-danger: #ef4444;
  --color-danger-bg: rgba(239, 68, 68, 0.12);
  --color-info: #3b82f6;
  --color-info-bg: rgba(59, 130, 246, 0.12);

  /* Neutrals */
  --color-white: #ffffff;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;
  --color-black: #000000;

  /* Glass */
  --glass-bg: rgba(10, 22, 40, 0.7);
  --glass-border: rgba(0, 212, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

  /* ── Typography ────────────────────────────────── */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-arabic: 'Noto Sans Arabic', 'Inter', sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* ── Spacing ───────────────────────────────────── */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* ── Borders & Radius ──────────────────────────── */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* ── Shadows ───────────────────────────────────── */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.2);
  --shadow-gold-glow: 0 0 20px rgba(255, 184, 0, 0.2);

  /* ── Transitions ───────────────────────────────── */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* ── Z-Index ───────────────────────────────────── */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-popover: 500;
  --z-toast: 600;
}

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-regular);
  color: var(--color-gray-100);
  background-color: var(--color-primary-900);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

a {
  color: var(--color-accent-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-300);
}

img {
  max-width: 100%;
  height: auto;
}

button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ── Utility Classes ─────────────────────────────── */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.text-center { text-align: center; }
.w-full { width: 100%; }
.hidden { display: none !important; }
.relative { position: relative; }

/* ── Glass Card ──────────────────────────────────── */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* ── Buttons ─────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-500), #0099cc);
  color: var(--color-primary-900);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent-500);
  border: 1px solid var(--color-accent-500);
}

.btn-secondary:hover {
  background: var(--color-accent-glow);
  transform: translateY(-2px);
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold-500), #cc9200);
  color: var(--color-primary-900);
  box-shadow: 0 4px 15px rgba(255, 184, 0, 0.3);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 184, 0, 0.5);
}

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger), #c0392b);
  color: var(--color-white);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

.btn-icon {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-gray-400);
}

.btn-icon:hover {
  background: var(--color-accent-glow);
  color: var(--color-accent-500);
}

/* ── Form Inputs ─────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-300);
}

.form-input {
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-white);
  font-size: var(--text-sm);
  transition: all var(--transition-base);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent-500);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
  background: rgba(255, 255, 255, 0.08);
}

.form-input::placeholder {
  color: var(--color-gray-500);
}

.form-input.error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px var(--color-danger-bg);
}

select.form-input,
select.form-control,
textarea.form-control,
input.form-control {
  color-scheme: dark;
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  background-color: #12263f;
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  font-size: 0.92rem;
}

select.form-input option,
select.form-control option {
  background-color: #0f2035;
  color: #f8fafc;
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-danger);
}

/* ── Badge ───────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }
.badge-info { background: var(--color-info-bg); color: var(--color-info); }
.badge-gold { background: var(--color-gold-glow); color: var(--color-gold-500); }

/* ── Toast / Alert ───────────────────────────────── */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  background: var(--color-gray-800);
  border-left: 4px solid var(--color-accent-500);
  box-shadow: var(--shadow-lg);
  animation: slideInRight 0.4s var(--transition-spring);
  min-width: 320px;
  max-width: 450px;
}

.toast.success { border-left-color: var(--color-success); }
.toast.warning { border-left-color: var(--color-warning); }
.toast.error { border-left-color: var(--color-danger); }

/* ── Spinner ─────────────────────────────────────── */
.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--color-accent-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-lg {
  width: 48px;
  height: 48px;
  border-width: 4px;
}

/* ── Animations ──────────────────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

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

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

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

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(80px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-80px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

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

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

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px var(--color-accent-500), 0 0 15px rgba(0,212,255,0.1); }
  50% { box-shadow: 0 0 20px var(--color-accent-500), 0 0 40px rgba(0,212,255,0.2); }
}

@keyframes twinkle {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.5); }
}

.animate-fade-in { animation: fadeIn 0.6s ease both; }
.animate-fade-in-up { animation: fadeInUp 0.6s ease both; }
.animate-fade-in-down { animation: fadeInDown 0.6s ease both; }
.animate-scale-in { animation: scaleIn 0.4s ease both; }
.animate-float { animation: float 3s ease-in-out infinite; }

/* Staggered delays */
.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; }
.delay-6 { animation-delay: 0.6s; }

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

::-webkit-scrollbar-track {
  background: var(--color-primary-900);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary-500);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-400);
}

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-6xl: 2.75rem;
    --text-7xl: 3rem;
  }

  .container {
    padding: 0 var(--space-4);
  }
}