/* ============================================================
   COGNITO — APPLE DESIGN SYSTEM MASTER ENGINE (appledesign MAX)
   Synthesized from Apple WWDC Principles & Emil Kowalski's Design Engineering
   ============================================================ */

:root {
  /* Fluid Apple Motion Tokens */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.12);
  --ease-apple: cubic-bezier(0.25, 1, 0.5, 1);
  --spring-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Apple Translucent Glass Materials */
  --apple-glass-bg: rgba(255, 255, 255, 0.82);
  --apple-glass-border: rgba(226, 232, 240, 0.75);
  --apple-glass-blur: 24px;
  --apple-glass-saturate: 190%;

  /* Apple Depth Shadows */
  --apple-shadow-subtle: 0 1px 3px rgba(12, 35, 80, 0.04), 0 4px 12px rgba(12, 35, 80, 0.03);
  --apple-shadow-card: 0 4px 20px -2px rgba(12, 35, 80, 0.06), 0 1px 3px rgba(12, 35, 80, 0.02);
  --apple-shadow-hover: 0 16px 36px -6px rgba(12, 35, 80, 0.12), 0 6px 16px -2px rgba(12, 35, 80, 0.05);
  --apple-shadow-float: 0 24px 48px -8px rgba(8, 26, 58, 0.16), 0 8px 24px -4px rgba(8, 26, 58, 0.06);

  /* Apple Radii */
  --apple-r-sm: 10px;
  --apple-r-md: 16px;
  --apple-r-lg: 22px;
  --apple-r-xl: 28px;
}

/* 1. TYPOGRAPHY CRAFT & OPTICAL RENDERING */
html, body {
  -webkit-font-smoothing: antialiased !important;
  -moz-osx-font-smoothing: grayscale !important;
  text-rendering: optimizeLegibility !important;
  scroll-behavior: smooth !important;
}

h1, .hero h1, .h6-hero h1, .hero-simple h1 {
  letter-spacing: -0.032em !important;
  line-height: 1.1 !important;
}

h2, .section-head h2, .h6-head h2 {
  letter-spacing: -0.025em !important;
  line-height: 1.16 !important;
}

h3, .card h3, .h6-card h3 {
  letter-spacing: -0.018em !important;
}

.eyebrow, .h6-eyebrow, .badge-pop, .cognito-bts-badge {
  letter-spacing: 0.04em !important;
  font-weight: 700 !important;
}

/* 2. TRANSLUCENT GLASS NAVIGATION & BARS */
.site-nav, .site-nav.nav-light {
  background: var(--apple-glass-bg) !important;
  backdrop-filter: blur(var(--apple-glass-blur)) saturate(var(--apple-glass-saturate)) !important;
  -webkit-backdrop-filter: blur(var(--apple-glass-blur)) saturate(var(--apple-glass-saturate)) !important;
  border-bottom: 1px solid var(--apple-glass-border) !important;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 4px 20px -2px rgba(8, 26, 58, 0.04) !important;
  transition: background 250ms ease, border-color 250ms ease, box-shadow 250ms ease !important;
}

.cognito-bts-bar {
  background: rgba(6, 19, 41, 0.90) !important;
  backdrop-filter: blur(16px) saturate(160%) !important;
  -webkit-backdrop-filter: blur(16px) saturate(160%) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12) !important;
}

.sticky-mobile-cta {
  background: rgba(255, 255, 255, 0.88) !important;
  backdrop-filter: blur(24px) saturate(200%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(200%) !important;
  border-top: 1px solid rgba(226, 232, 240, 0.85) !important;
  box-shadow: 0 -8px 32px -4px rgba(8, 26, 58, 0.08), 0 -1px 0 rgba(0, 0, 0, 0.04) !important;
}

/* 3. FLUID BUTTONS & TACTILE PRESS (160ms BUDGET) */
.btn, .btn-accent, .btn-secondary, .h6-btn, .btn-nav-cta, button.form-submit, .sticky-cta-primary, .trial-opt-cta {
  transition: transform 160ms var(--ease-out), box-shadow 200ms var(--ease-out), background-color 180ms ease, opacity 140ms ease !important;
  will-change: transform;
  transform: translateZ(0);
}

.btn:hover, .btn-accent:hover, .btn-nav-cta:hover, button.form-submit:hover, .sticky-cta-primary:hover, .trial-opt-cta:hover {
  box-shadow: 0 6px 18px -2px rgba(30, 95, 208, 0.35), 0 2px 6px -1px rgba(30, 95, 208, 0.20) !important;
}

.btn:active, .btn-accent:active, .btn-secondary:active, .h6-btn:active, .btn-nav-cta:active, button.form-submit:active, .sticky-cta-primary:active, .trial-opt-cta:active {
  transform: scale(0.972) translateY(0.5px) !important;
  box-shadow: 0 2px 6px -1px rgba(30, 95, 208, 0.25) !important;
}

/* 4. CARDS & CONTAINERS APPLE CRAFT */
.card, .price-card, .offer-card, .problem-card, .h6-card, .tcard, .trial-opt, .subject-card-link, .post-card, .quick-answer, .dashboard-card {
  border: 1px solid var(--apple-glass-border) !important;
  box-shadow: var(--apple-shadow-card) !important;
  border-radius: var(--apple-r-lg) !important;
  transition: transform 240ms var(--ease-out), box-shadow 240ms var(--ease-out), border-color 200ms ease !important;
  will-change: transform, box-shadow;
  transform: translateZ(0);
}

@media (hover: hover) {
  .card:hover, .price-card:hover, .h6-card.lift:hover, .subject-card-link:hover, .post-card:hover, .tcard:hover, .trial-opt:hover {
    transform: translateY(-3px) translateZ(0) !important;
    box-shadow: var(--apple-shadow-hover) !important;
    border-color: rgba(30, 95, 208, 0.25) !important;
  }
}

/* 5. QUICK ANSWER DIRECT ANSWER BOX */
.quick-answer {
  background: linear-gradient(135deg, rgba(240, 246, 255, 0.95) 0%, rgba(255, 255, 255, 0.98) 100%) !important;
  border-left: 4px solid #1e5fd0 !important;
  border-radius: 14px !important;
  padding: 18px 22px !important;
  box-shadow: var(--apple-shadow-subtle) !important;
  line-height: 1.65 !important;
}

/* 6. APPLE TABLES (CLEAN CRAFT) */
.ctable, .h6-table {
  border-collapse: separate !important;
  border-spacing: 0 !important;
  border-radius: var(--apple-r-md) !important;
  overflow: hidden !important;
  border: 1px solid var(--apple-glass-border) !important;
  box-shadow: var(--apple-shadow-subtle) !important;
}

.ctable th, .h6-table th {
  background: #f8fafc !important;
  color: #0f172a !important;
  font-weight: 700 !important;
  letter-spacing: -0.01em !important;
  border-bottom: 1px solid #e2e8f0 !important;
  padding: 14px 18px !important;
}

.ctable td, .h6-table td {
  padding: 14px 18px !important;
  border-bottom: 1px solid #f1f5f9 !important;
  transition: background-color 150ms ease !important;
}

.ctable tbody tr:hover td, .h6-table tbody tr:hover td {
  background-color: rgba(241, 248, 255, 0.6) !important;
}

/* 7. APPLE FORM INPUTS & FOCUS RING */
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  border: 1.5px solid #d1d5db !important;
  border-radius: 12px !important;
  padding: 12px 16px !important;
  font-size: 0.95rem !important;
  transition: border-color 160ms var(--ease-out), box-shadow 160ms var(--ease-out), background-color 160ms ease !important;
}

input[type="text"]:focus, input[type="email"]:focus, input[type="tel"]:focus, select:focus, textarea:focus {
  outline: none !important;
  border-color: #2563eb !important;
  background-color: #ffffff !important;
  box-shadow: 0 0 0 3.5px rgba(37, 99, 235, 0.18), 0 1px 3px rgba(0, 0, 0, 0.04) !important;
}

/* 8. FAQ ACCORDION SMOOTH SPRINGS */
.faq-item {
  border-radius: var(--apple-r-md) !important;
  border: 1px solid var(--apple-glass-border) !important;
  box-shadow: var(--apple-shadow-subtle) !important;
  transition: border-color 200ms ease, box-shadow 200ms ease, background-color 200ms ease !important;
  overflow: hidden;
}

.faq-question {
  transition: background-color 180ms ease, color 180ms ease !important;
}

.faq-question:active {
  background-color: rgba(241, 245, 249, 0.7) !important;
}

.faq-question span[aria-hidden="true"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(30, 95, 208, 0.08);
  color: #1e5fd0;
  font-size: 1.15rem;
  line-height: 1;
  transition: transform 260ms var(--ease-spring), background-color 200ms ease, color 200ms ease !important;
}

.faq-item.open .faq-question span[aria-hidden="true"] {
  transform: rotate(45deg) !important;
  background: #1e5fd0 !important;
  color: #ffffff !important;
}

/* 9. CHIPS, BADGES & PILLS */
.tag-pill, .city-chips a, .blog-cat, .h6-offer-pills > div {
  border-radius: 9999px !important;
  transition: transform 160ms var(--ease-out), background-color 160ms ease, box-shadow 160ms ease, color 160ms ease !important;
}

.tag-pill:active, .city-chips a:active, .blog-cat:active {
  transform: scale(0.96) !important;
}

/* 10. PROGRESS BARS (SMOOTH FILL) */
.progress-track {
  background: rgba(226, 232, 240, 0.7) !important;
  border-radius: 9999px !important;
  overflow: hidden !important;
}

.progress-fill {
  transition: width 800ms var(--ease-out) !important;
}

/* 11. ACCESSIBILITY & PREFERS-REDUCED-MOTION */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}