/* ============================================================
   site.css  —  Maths Manthra Academy
   Global responsive styles, fluid typography, sticky nav,
   mobile utilities. Mobile-first approach.
   ============================================================ */

/* ── 1. BASE RESET & OVERFLOW CONTROL ── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  overflow-x: hidden;
  min-height: 100vh;
  /* Ensure no page-level horizontal scroll on any device */
}

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

/* ── 2. FLUID TYPOGRAPHY (clamp-based) ── */
/* Usage: add class .fluid-h1, .fluid-h2, .fluid-h3, .fluid-body to elements */

.fluid-h1 {
  font-size: clamp(1.75rem, 5vw, 3.75rem);
  line-height: 1.1;
}

.fluid-h2 {
  font-size: clamp(1.35rem, 4vw, 2.5rem);
  line-height: 1.2;
}

.fluid-h3 {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  line-height: 1.3;
}

.fluid-body {
  font-size: clamp(0.9rem, 2vw, 1.05rem);
  line-height: 1.6;
}

.fluid-small {
  font-size: clamp(0.75rem, 1.5vw, 0.875rem);
}

/* ── 3. STICKY NAVIGATION ── */

.site-header-wrap {
  position: sticky;
  top: 0;
  z-index: 100;
  /* Adds glass effect on scroll */
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  /* Subtle bottom separator */
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  /* Dark tinted background so content below doesn't show through when scrolled */
  background: rgba(11, 15, 46, 0.80);
  /* Smooth appearance transition */
  transition: background 0.3s ease, border-color 0.3s ease;
}

/* When scrolled, slightly darken further */
.site-header-wrap.scrolled {
  background: rgba(7, 10, 31, 0.95);
  border-color: rgba(255, 255, 255, 0.10);
}

/* ── 4. MOBILE NAV DRAWER ANIMATION ── */

#mobileMenu {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              opacity 0.25s ease,
              transform 0.3s ease;
  transform: translateY(-8px);
  /* Remove display:hidden toggling — use max-height instead */
  display: flex !important;
  flex-direction: column;
  gap: 0.5rem;
}

#mobileMenu.open {
  max-height: 420px; /* large enough for all links */
  opacity: 1;
  transform: translateY(0);
}

/* ── 5. TOUCH TARGETS ── */

/* All interactive elements get a minimum 44px touch target */
a,
button,
select,
input,
textarea {
  touch-action: manipulation;
}

.btn-touch-min {
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ── 6. RESPONSIVE IMAGES ── */

.img-responsive {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.img-contain {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* ── 7. HERO SECTION FIXES ── */

/* Prevent the hero illustration container from overflowing */
.hero-illustration-wrap {
  position: relative;
  width: 100%;
  overflow: hidden; /* Clip decorative items that go past edges */
}

/* ── 8. CARD GRID SYSTEM ── */

/* 1 col mobile → 2 col tablet → 3 col desktop */
.card-grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .card-grid-3 {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .card-grid-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

/* Cards get equal height within the grid */
.card-grid-3 > * {
  height: 100%;
}

/* ── 9. LEVEL BUTTON ROW (hero panel) ── */
/* 4 character cards in a row — prevent overflow on 320px */
.level-btn-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  width: 100%;
}

.level-btn-row .level-btn {
  width: 100%;
}

@media (min-width: 480px) {
  .level-btn-row {
    display: flex;
    gap: 0.75rem;
    width: auto;
  }
}

/* Reduce character card size on very small screens */
@media (max-width: 380px) {
  .level-card-inner {
    height: 60px !important;
    width: 60px !important;
  }
}

/* ── 10. STATS STRIP (hero) ── */

.stats-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
}

.stats-strip .stat-divider {
  display: none;
}

@media (min-width: 480px) {
  .stats-strip .stat-divider {
    display: block;
  }
}

/* ── 11. SECTION PADDING (responsive) ── */
.section-px {
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 640px) {
  .section-px {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

@media (min-width: 1024px) {
  .section-px {
    padding-left: 3.5rem;
    padding-right: 3.5rem;
  }
}

/* ── 12. FORM RESPONSIVE ── */

/* All form inputs: full width + touch-friendly height */
.form-input {
  width: 100%;
  min-height: 48px;
  font-size: 1rem; /* prevent iOS zoom */
}

/* Prevent iOS auto-zoom on input focus (font-size must be ≥ 16px) */
input,
select,
textarea {
  font-size: 16px !important;
}

@media (min-width: 640px) {
  input,
  select,
  textarea {
    font-size: 0.875rem !important;
  }
}

/* ── 13. BOTTOM HERO GLASS PANEL ── */

/* On very small screens, increase stacking gap */
@media (max-width: 380px) {
  .hero-bottom-panel {
    padding: 1rem;
    gap: 1rem;
  }
}

/* ── 14. HERO DECORATIVE ELEMENTS ── */

/* Clamp treasure / Daily Challenge pill within safe bounds */
.deco-treasure {
  right: 0 !important;
  bottom: 0 !important;
}

.deco-challenge-pill {
  right: 0 !important;
  bottom: 2% !important;
  max-width: calc(100% - 2rem);
}

/* On small screens, hide some floating math symbols to avoid clutter */
@media (max-width: 480px) {
  .deco-math-symbol {
    display: none;
  }
}

/* ── 15. ABOUT PAGE SPECIFIC ── */

/* Fix quote card font sizing on mobile */
@media (max-width: 640px) {
  .about-quote {
    font-size: clamp(0.95rem, 3.5vw, 1.25rem);
    padding: 1.5rem;
  }

  .about-intro-card {
    padding: 1.25rem;
  }
}

/* ── 16. CONTACT PAGE SPECIFIC ── */

@media (max-width: 640px) {
  .contact-card {
    padding: 1.25rem;
  }

  /* Shrink the @badge text so it doesn't overflow */
  .insta-badge {
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
  }

  /* Ensure email doesn't overflow */
  .email-text {
    word-break: break-all;
  }
}

/* ── 17. FOOTER (if added later) ── */
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ── 18. ACCESSIBILITY ── */

/* Visible focus ring for keyboard navigation */
:focus-visible {
  outline: 2px solid rgba(167, 139, 250, 0.8);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip-to-content link (screen readers) */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: #6366f1;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0 0 0.5rem 0.5rem;
  font-weight: 700;
  z-index: 9999;
  transition: top 0.2s;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* ── 19. PERFORMANCE: REDUCE LAYOUT SHIFT ── */

/* Reserve space for images before they load */
.img-aspect-hero {
  aspect-ratio: 3 / 2;
}

@media (min-width: 1024px) {
  .img-aspect-hero {
    aspect-ratio: 4 / 3;
  }
}

/* ── 20. UTILITY: MAX-WIDTH CONTAINERS ── */
.container-page {
  width: 100%;
  max-width: 1536px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 640px) {
  .container-page {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .container-page {
    padding-left: 3.5rem;
    padding-right: 3.5rem;
  }
}

/* ── 21. ABACUS TOOLBAR RESPONSIVE ── */
@media (max-width: 640px) {
  .toolbar-glass {
    padding: 1rem !important;
  }
  .toolbar-glass > div {
    gap: 1rem !important;
  }
}