/* ============================================================
   I CAN LEARN ACADEMY — MODERN PREMIUM DESIGN SYSTEM
   ============================================================ */

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

:root {
  /* Brand Colors */
  --primary-navy: #0A192F;
  --primary-dark: #0F172A;
  --primary-slate: #1E293B;
  --primary-accent: #4F46E5;
  --primary-accent-hover: #4338CA;
  --primary-accent-light: #EEF2FF;
  --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
  --brand-orange: #F97316;
  --brand-amber: #F59E0B;
  --brand-emerald: #10B981;
  --brand-rose: #F43F5E;
  --brand-cyan: #06B6D4;

  /* Neutral Surface Colors */
  --bg-page: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-alt: #F1F5F9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-subtle: #E2E8F0;
  --border-medium: #CBD5E1;

  /* Typography */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-inverse: #FFFFFF;

  /* Elevation Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 2px 4px 0 rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px -1px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 25px -3px rgba(15, 23, 42, 0.1), 0 4px 10px -2px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 35px -5px rgba(15, 23, 42, 0.12), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 25px rgba(79, 70, 229, 0.25);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-secondary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

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

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

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

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   HEADER & NAVBAR
   ============================================================ */

.site-header {
  background: var(--primary-navy) !important;
  position: sticky !important;
  top: 0 !important;
  z-index: 1000 !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
  box-shadow: 0 4px 20px rgba(10, 25, 47, 0.25) !important;
  backdrop-filter: blur(10px);
}

.navbar {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  height: 74px !important;
}

.nav-brand {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
  text-decoration: none !important;
}

.nav-brand-icon {
  width: 44px !important;
  height: 44px !important;
  background: var(--primary-gradient) !important;
  border-radius: var(--radius-md) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: #FFFFFF !important;
  font-size: 1.35rem !important;
  flex-shrink: 0 !important;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4) !important;
}

.nav-brand-text {
  display: flex !important;
  flex-direction: column !important;
  line-height: 1.1 !important;
}

.nav-brand-title {
  font-family: 'Outfit', sans-serif !important;
  font-size: 1.25rem !important;
  font-weight: 800 !important;
  color: #FFFFFF !important;
  letter-spacing: -0.01em !important;
}

.nav-brand-title span {
  color: #818CF8 !important;
  margin-left: 4px !important;
}

.nav-brand-tag {
  font-size: 0.68rem !important;
  font-weight: 700 !important;
  color: #94A3B8 !important;
  letter-spacing: 0.12em !important;
  text-transform: uppercase !important;
}

.nav-links {
  display: flex !important;
  align-items: center !important;
  list-style: none !important;
  gap: 8px !important;
  margin: 0 !important;
  padding: 0 !important;
}

.nav-links a {
  color: #CBD5E1 !important;
  font-size: 0.95rem !important;
  font-weight: 600 !important;
  padding: 8px 16px !important;
  border-radius: var(--radius-pill) !important;
  transition: all var(--transition-fast) !important;
  display: inline-block !important;
}

.nav-links a:hover,
.nav-links a.active {
  color: #FFFFFF !important;
  background: rgba(255, 255, 255, 0.1) !important;
}

.nav-cta-group {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
}

.btn-login {
  color: #FFFFFF !important;
  font-weight: 600 !important;
  font-size: 0.92rem !important;
  padding: 9px 20px !important;
  border-radius: var(--radius-pill) !important;
  border: 1px solid rgba(255, 255, 255, 0.25) !important;
  transition: all var(--transition-fast) !important;
  background: transparent !important;
  cursor: pointer !important;
}

.btn-login:hover {
  background: rgba(255, 255, 255, 0.15) !important;
  border-color: #FFFFFF !important;
}

.btn-enroll {
  background: var(--primary-gradient) !important;
  color: #FFFFFF !important;
  font-weight: 700 !important;
  font-size: 0.92rem !important;
  padding: 9px 22px !important;
  border-radius: var(--radius-pill) !important;
  border: none !important;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35) !important;
  transition: all var(--transition-fast) !important;
  cursor: pointer !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
}

.btn-enroll:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.45) !important;
}

.mobile-menu-ctas {
  display: none !important;
}

.hamburger {
  display: none !important;
  background: transparent !important;
  border: none !important;
  cursor: pointer !important;
  padding: 8px !important;
  flex-direction: column !important;
  gap: 5px !important;
}

.hamburger span {
  display: block !important;
  width: 24px !important;
  height: 2.5px !important;
  background: #FFFFFF !important;
  border-radius: 2px !important;
  transition: all var(--transition-normal) !important;
}

/* ============================================================
   BUTTONS & PILLS
   ============================================================ */

.btn-enroll-pill {
  background: var(--primary-gradient) !important;
  color: #FFFFFF !important;
  font-weight: 700 !important;
  padding: 13px 28px !important;
  border-radius: var(--radius-pill) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 10px !important;
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35) !important;
  transition: all var(--transition-normal) !important;
  border: none !important;
  cursor: pointer !important;
  text-decoration: none !important;
}

.btn-enroll-pill:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 22px rgba(79, 70, 229, 0.45) !important;
  color: #FFFFFF !important;
}

.btn-outline-pill {
  background: transparent !important;
  color: var(--text-primary) !important;
  font-weight: 700 !important;
  padding: 13px 28px !important;
  border-radius: var(--radius-pill) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 10px !important;
  border: 2px solid var(--border-medium) !important;
  transition: all var(--transition-normal) !important;
  cursor: pointer !important;
  text-decoration: none !important;
}

.btn-outline-pill:hover {
  border-color: var(--primary-accent) !important;
  color: var(--primary-accent) !important;
  background: var(--primary-accent-light) !important;
  transform: translateY(-2px) !important;
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
  background: var(--primary-navy) !important;
  color: #94A3B8 !important;
  padding: 70px 0 30px !important;
  border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.footer-grid {
  display: grid !important;
  grid-template-columns: 2fr 1fr 1fr 1.2fr !important;
  gap: 40px !important;
  margin-bottom: 50px !important;
}

.footer-logo {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
  text-decoration: none !important;
  margin-bottom: 16px !important;
}

.footer-logo .logo-icon {
  width: 40px !important;
  height: 40px !important;
  background: var(--primary-gradient) !important;
  border-radius: var(--radius-md) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: #FFFFFF !important;
  font-size: 1.2rem !important;
}

.footer-logo .logo-text {
  font-family: 'Outfit', sans-serif !important;
  font-size: 1.25rem !important;
  font-weight: 800 !important;
  color: #FFFFFF !important;
}

.footer-logo .logo-sub {
  color: #818CF8 !important;
}

.footer-desc {
  font-size: 0.92rem !important;
  color: #94A3B8 !important;
  line-height: 1.6 !important;
  margin-bottom: 20px !important;
}

.footer-socials {
  display: flex !important;
  gap: 12px !important;
}

.footer-socials a {
  width: 36px !important;
  height: 36px !important;
  border-radius: var(--radius-pill) !important;
  background: rgba(255, 255, 255, 0.08) !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: #CBD5E1 !important;
  transition: all var(--transition-fast) !important;
}

.footer-socials a:hover {
  background: var(--primary-accent) !important;
  color: #FFFFFF !important;
  transform: translateY(-2px) !important;
}

.footer-col h5 {
  color: #FFFFFF !important;
  font-size: 1.05rem !important;
  font-weight: 700 !important;
  margin-bottom: 20px !important;
  letter-spacing: -0.01em !important;
}

.footer-links {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.footer-links li {
  margin-bottom: 12px !important;
}

.footer-links a {
  color: #94A3B8 !important;
  font-size: 0.92rem !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  transition: all var(--transition-fast) !important;
}

.footer-links a i {
  font-size: 0.75rem !important;
  color: #64748B !important;
  transition: transform var(--transition-fast) !important;
}

.footer-links a:hover {
  color: #FFFFFF !important;
}

.footer-links a:hover i {
  color: #818CF8 !important;
  transform: translateX(3px) !important;
}

.footer-contact {
  list-style: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

.footer-contact li {
  display: flex !important;
  align-items: flex-start !important;
  gap: 12px !important;
  font-size: 0.92rem !important;
  color: #94A3B8 !important;
  margin-bottom: 14px !important;
}

.footer-contact li i {
  color: #818CF8 !important;
  margin-top: 4px !important;
  font-size: 0.95rem !important;
}

.footer-bottom {
  padding-top: 24px !important;
  border-top: 1px solid rgba(255, 255, 255, 0.06) !important;
  text-align: center !important;
  font-size: 0.85rem !important;
  color: #64748B !important;
}

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--primary-slate);
  color: #FFFFFF;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: 0.92rem;
  font-weight: 500;
  min-width: 300px;
  max-width: 440px;
  animation: toastIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  border-left: 4px solid var(--primary-accent);
}

.toast.success { border-left-color: var(--brand-emerald); }
.toast.error   { border-left-color: var(--brand-rose); }
.toast.warning { border-left-color: var(--brand-amber); }
.toast.info    { border-left-color: var(--brand-cyan); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(-16px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(-16px) scale(0.96); }
}

/* ============================================================
   MODALS
   ============================================================ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  transform: translateY(20px) scale(0.98);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-card {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-header h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
}

.modal-close-btn {
  background: var(--bg-surface-alt);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: #E2E8F0;
  color: var(--text-primary);
}