/* MathsWonder — Shared Stylesheet
   Design: Deep Indigo + Saffron, Mobile-first, No framework
   ================================================================ */

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

/* ── CSS Variables ── */
:root {
  --clr-primary:       #1E3A8A;
  --clr-primary-dark:  #162d6e;
  --clr-primary-light: #EFF6FF;
  --clr-accent:        #F59E0B;
  --clr-accent-dark:   #D97706;
  --clr-accent-light:  #FEF3C7;
  --clr-bg:            #F9FAFB;
  --clr-white:         #FFFFFF;
  --clr-text:          #111827;
  --clr-muted:         #6B7280;
  --clr-border:        #E5E7EB;
  --clr-success:       #10B981;
  --clr-error:         #EF4444;

  --font:              'Inter', system-ui, -apple-system, sans-serif;

  --radius-sm:         0.375rem;
  --radius:            0.625rem;
  --radius-lg:         1rem;
  --radius-xl:         1.5rem;

  --shadow-sm:         0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow:            0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:         0 8px 32px rgba(0,0,0,.12);
  --shadow-xl:         0 20px 48px rgba(0,0,0,.14);

  --transition:        0.22s ease;
  --max-w:             1200px;
  --nav-h:             72px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--clr-text);
  background: var(--clr-bg);
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }

/* ── Utilities ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.25rem;
}
.section { padding-block: 5rem; }
.section--sm { padding-block: 3rem; }
.section--alt { background: var(--clr-white); }
.section--dark { background: var(--clr-primary); color: var(--clr-white); }
.section--accent-light { background: var(--clr-accent-light); }
.section--primary-light { background: var(--clr-primary-light); }
.text-center { text-align: center; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--clr-text); }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.125rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 600; }

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 0.75rem;
}
.section-title {
  margin-bottom: 1rem;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--clr-muted);
  max-width: 640px;
  margin-bottom: 2.5rem;
}
.section-header { margin-bottom: 3rem; }
.section-header--center { text-align: center; }
.section-header--center .section-subtitle { margin-inline: auto; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  text-align: center;
  border: 2px solid transparent;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}
.btn--primary:hover { background: var(--clr-primary-dark); border-color: var(--clr-primary-dark); box-shadow: var(--shadow); }
.btn--accent {
  background: var(--clr-accent);
  color: var(--clr-text);
  border-color: var(--clr-accent);
}
.btn--accent:hover { background: var(--clr-accent-dark); border-color: var(--clr-accent-dark); box-shadow: var(--shadow); }
.btn--outline {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn--outline:hover { background: var(--clr-primary); color: var(--clr-white); }
.btn--outline-white {
  background: transparent;
  color: var(--clr-white);
  border-color: var(--clr-white);
}
.btn--outline-white:hover { background: var(--clr-white); color: var(--clr-primary); }
.btn--lg { padding: 0.9rem 2.25rem; font-size: 1.05rem; }
.btn-group { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--clr-white);
  box-shadow: 0 1px 0 var(--clr-border);
  height: var(--nav-h);
}
.nav__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 100%;
}
.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  text-decoration: none;
}
.nav__logo-img {
  height: 44px;
  width: 44px;
  object-fit: contain;
  border-radius: 4px;
}
.nav__logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--clr-primary);
  letter-spacing: -0.5px;
}
.nav__logo-text span {
  color: var(--clr-accent);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}
.nav__links a {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text);
  transition: color var(--transition), background var(--transition);
}
.nav__links a:hover,
.nav__links a.active { color: var(--clr-primary); background: var(--clr-primary-light); }
.nav__cta { margin-left: 0.75rem; }
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  margin-left: auto;
  border-radius: var(--radius-sm);
}
.nav__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ── */
.hero {
  background: var(--clr-primary);
  color: var(--clr-white);
  overflow: hidden;
  padding-block: 4rem 0;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(245,158,11,.12) 0%, transparent 65%);
  pointer-events: none;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: flex-end;
}
.hero__content { padding-bottom: 4rem; }
.hero__label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(245,158,11,.18);
  color: var(--clr-accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}
.hero h1 { color: var(--clr-white); margin-bottom: 1.25rem; }
.hero__sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.8);
  margin-bottom: 2rem;
  max-width: 480px;
}
.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.9);
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,.15);
}
.hero__image {
  display: flex;
  justify-content: center;
  align-items: flex-end;
}
.hero__image img {
  max-height: 520px;
  width: auto;
  object-fit: cover;
  object-position: top;
  filter: drop-shadow(0 8px 32px rgba(0,0,0,.3));
}

/* ── Stats bar ── */
.stats {
  background: var(--clr-accent);
  padding-block: 2.25rem;
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
}
.stats__item {}
.stats__number {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--clr-primary);
  line-height: 1.1;
}
.stats__label {
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(17,24,39,.7);
  margin-top: 0.25rem;
}

/* ── Feature cards ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-border);
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card__icon {
  width: 52px;
  height: 52px;
  background: var(--clr-primary-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}
.card__icon--accent { background: var(--clr-accent-light); }
.card h3 { margin-bottom: 0.6rem; font-size: 1.1rem; }
.card p { color: var(--clr-muted); font-size: 0.9rem; margin: 0; }

/* ── Grade cards ── */
.grade-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}
.grade-card {
  background: var(--clr-white);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  cursor: default;
}
.grade-card:hover {
  border-color: var(--clr-primary);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.grade-card__grade {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-primary);
  margin-bottom: 0.4rem;
}
.grade-card__range { font-size: 0.8rem; color: var(--clr-muted); font-weight: 500; }
.grade-card__topics { font-size: 0.78rem; color: var(--clr-text); margin-top: 0.75rem; }

/* ── Comparison table ── */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.compare-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 2px solid var(--clr-border);
}
.compare-card--featured {
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-lg);
  position: relative;
}
.compare-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--clr-accent);
  color: var(--clr-text);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.25rem 1rem;
  border-radius: 100px;
}
.compare-card h3 { margin-bottom: 0.5rem; }
.compare-card__sub { color: var(--clr-muted); font-size: 0.9rem; margin-bottom: 1.25rem; }
.compare-card ul { display: flex; flex-direction: column; gap: 0.6rem; }
.compare-card li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
}
.compare-card li::before {
  content: '✓';
  color: var(--clr-success);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ── Shloka block ── */
.shloka {
  background: var(--clr-primary);
  color: var(--clr-white);
  padding-block: 4rem;
  text-align: center;
}
.shloka__devanagari {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  line-height: 1.9;
  color: var(--clr-accent);
  margin-bottom: 1.25rem;
  font-weight: 500;
}
.shloka__translation {
  font-size: 1rem;
  color: rgba(255,255,255,.8);
  font-style: italic;
  max-width: 680px;
  margin-inline: auto;
}
.shloka__source { font-size: 0.8rem; color: rgba(255,255,255,.5); margin-top: 1rem; }

/* ── FAQ Accordion ── */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; max-width: 860px; margin-inline: auto; }
.faq-item {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition);
}
.faq-item.is-open { box-shadow: var(--shadow); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-align: left;
  color: var(--clr-text);
  transition: color var(--transition);
}
.faq-question:hover { color: var(--clr-primary); }
.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--clr-primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  font-size: 1rem;
  font-weight: 700;
  transition: transform var(--transition), background var(--transition);
}
.faq-item.is-open .faq-icon { transform: rotate(45deg); background: var(--clr-primary); color: var(--clr-white); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-answer__inner {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.9rem;
  color: var(--clr-muted);
  line-height: 1.75;
}
.faq-item.is-open .faq-answer { max-height: 600px; }

/* ── CTA Banner ── */
.cta-banner {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-dark) 100%);
  color: var(--clr-white);
  text-align: center;
  padding-block: 4.5rem;
}
.cta-banner h2 { color: var(--clr-white); margin-bottom: 0.75rem; }
.cta-banner p { color: rgba(255,255,255,.8); font-size: 1.1rem; margin-bottom: 2rem; max-width: 540px; margin-inline: auto; }
.cta-banner .btn-group { justify-content: center; }

/* ── Two-column layout ── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.two-col--reverse { }
@media (min-width: 900px) { .two-col--reverse > :first-child { order: 2; } .two-col--reverse > :last-child { order: 1; } }

/* ── Reviews section ── */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}
.reviews-source {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.reviews-source h3 {
  font-size: 1rem;
  margin-bottom: 1.25rem;
  color: var(--clr-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── Blog cards ── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}
.blog-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-border);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.blog-card__img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--clr-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  font-size: 3rem;
}
.blog-card__body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.blog-card__tag {
  display: inline-block;
  background: var(--clr-accent-light);
  color: var(--clr-accent-dark);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}
.blog-card h3 { font-size: 1.05rem; margin-bottom: 0.6rem; line-height: 1.4; }
.blog-card h3 a { color: var(--clr-text); transition: color var(--transition); }
.blog-card h3 a:hover { color: var(--clr-primary); }
.blog-card p { font-size: 0.875rem; color: var(--clr-muted); flex: 1; margin-bottom: 1.25rem; }
.blog-card__meta { font-size: 0.78rem; color: var(--clr-muted); display: flex; align-items: center; gap: 0.75rem; }

/* ── Article layout (blog posts) ── */
.article-header { background: var(--clr-primary); color: var(--clr-white); padding-block: 4rem; }
.article-header h1 { color: var(--clr-white); margin-bottom: 1rem; }
.article-header .article-meta { color: rgba(255,255,255,.7); font-size: 0.9rem; display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.article-body { max-width: 780px; margin-inline: auto; padding-block: 3.5rem; }
.article-body h2 { margin-top: 2.5rem; margin-bottom: 1rem; font-size: 1.5rem; }
.article-body h3 { margin-top: 2rem; margin-bottom: 0.75rem; }
.article-body p { font-size: 1.025rem; margin-bottom: 1.25rem; color: var(--clr-text); }
.article-body ul, .article-body ol { padding-left: 1.5rem; margin-bottom: 1.25rem; }
.article-body li { margin-bottom: 0.5rem; font-size: 1.025rem; }
.article-body ul li { list-style: disc; }
.article-body ol li { list-style: decimal; }
.article-body blockquote {
  border-left: 4px solid var(--clr-accent);
  padding: 1rem 1.5rem;
  background: var(--clr-accent-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-block: 1.5rem;
  font-style: italic;
  color: var(--clr-text);
}
.article-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--clr-primary-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 3rem;
}
.article-author img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.article-author-info h4 { font-size: 1rem; margin-bottom: 0.25rem; }
.article-author-info p { font-size: 0.875rem; color: var(--clr-muted); margin: 0; }
.article-cta {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  margin-top: 2.5rem;
}
.article-cta h3 { color: var(--clr-white); margin-bottom: 0.5rem; }
.article-cta p { color: rgba(255,255,255,.8); margin-bottom: 1.5rem; }

/* ── Breadcrumb ── */
.breadcrumb {
  background: var(--clr-white);
  border-bottom: 1px solid var(--clr-border);
  padding-block: 0.75rem;
}
.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--clr-muted);
}
.breadcrumb__list li:not(:last-child)::after { content: '/'; margin-left: 0.5rem; color: var(--clr-border); }
.breadcrumb__list a { color: var(--clr-primary); transition: color var(--transition); }
.breadcrumb__list a:hover { color: var(--clr-accent-dark); }
.breadcrumb__list li:last-child { color: var(--clr-text); font-weight: 500; }

/* ── Contact page ── */
.contact-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 3rem;
}
.contact-option {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.contact-option:hover { border-color: var(--clr-primary); box-shadow: var(--shadow); }
.contact-option__icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: 1rem;
  font-size: 1.4rem;
}
.contact-option__icon--wa { background: #E7F5E9; }
.contact-option__icon--phone { background: var(--clr-primary-light); }
.contact-option__icon--email { background: var(--clr-accent-light); }
.contact-option h3 { font-size: 1rem; margin-bottom: 0.4rem; }
.contact-option p { font-size: 0.875rem; color: var(--clr-muted); margin: 0; }
.contact-option a { color: var(--clr-primary); font-weight: 600; font-size: 0.9rem; }
.contact-form-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.contact-form-info h2 { margin-bottom: 1rem; }
.contact-form-info p { color: var(--clr-muted); margin-bottom: 1.25rem; }
.contact-form-info ul { display: flex; flex-direction: column; gap: 0.6rem; }
.contact-form-info li { display: flex; align-items: flex-start; gap: 0.6rem; font-size: 0.9rem; }
.contact-form-info li::before { content: '✓'; color: var(--clr-success); font-weight: 700; flex-shrink: 0; margin-top: 2px; }

/* ── Form styles ── */
.form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-text);
}
.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.75rem 1rem;
  border: 2px solid var(--clr-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--clr-text);
  background: var(--clr-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus { outline: none; border-color: var(--clr-primary); box-shadow: 0 0 0 3px rgba(30,58,138,.12); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--clr-muted); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-error {
  font-size: 0.78rem;
  color: var(--clr-error);
  display: none;
}
.form-group.has-error input,
.form-group.has-error textarea { border-color: var(--clr-error); }
.form-group.has-error .form-error { display: block; }
.form-submit { display: flex; flex-direction: column; gap: 1rem; }
#formResult {
  font-size: 0.9rem;
  text-align: center;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  display: none;
}
#formResult.success { background: #D1FAE5; color: #065F46; display: block; }
#formResult.error { background: #FEE2E2; color: #991B1B; display: block; }

/* ── Map ── */
.map-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-top: 3rem;
}
.map-wrap iframe { display: block; width: 100%; height: 420px; border: 0; }

/* ── Learning / Videos page ── */
.video-main { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.video-main iframe { display: block; width: 100%; aspect-ratio: 16/9; }
.yt-subscribe {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: #FF0000;
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.65rem 1.5rem;
  border-radius: var(--radius);
  transition: opacity var(--transition);
}
.yt-subscribe:hover { opacity: 0.88; }

/* ── About page ── */
.about-hero {
  background: var(--clr-primary);
  color: var(--clr-white);
  padding-block: 4rem;
}
.about-hero h1 { color: var(--clr-white); margin-bottom: 1rem; }
.about-hero p { color: rgba(255,255,255,.8); max-width: 600px; }
.credentials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.credential-item {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: border-color var(--transition);
}
.credential-item:hover { border-color: var(--clr-primary); }
.credential-icon {
  width: 44px;
  height: 44px;
  background: var(--clr-primary-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.credential-item h4 { font-size: 0.9rem; margin-bottom: 0.2rem; }
.credential-item p { font-size: 0.8rem; color: var(--clr-muted); margin: 0; }
.philosophy-block {
  background: var(--clr-primary-light);
  border-left: 4px solid var(--clr-primary);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 2rem 2.5rem;
}

/* ── Footer ── */
.footer {
  background: var(--clr-text);
  color: rgba(255,255,255,.75);
  padding-top: 4rem;
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer__logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--clr-white);
  display: block;
  margin-bottom: 0.75rem;
}
.footer__logo span { color: var(--clr-accent); }
.footer__tagline { font-size: 0.88rem; margin-bottom: 1.25rem; }
.footer__shloka {
  font-size: 0.8rem;
  font-style: italic;
  color: var(--clr-accent);
  line-height: 1.8;
}
.footer__shloka-trans { font-size: 0.75rem; color: rgba(255,255,255,.5); font-style: normal; margin-top: 0.4rem; }
.footer__col h4 { color: var(--clr-white); font-size: 0.9rem; margin-bottom: 1.1rem; }
.footer__col ul { display: flex; flex-direction: column; gap: 0.55rem; }
.footer__col ul a { font-size: 0.85rem; color: rgba(255,255,255,.65); transition: color var(--transition); }
.footer__col ul a:hover { color: var(--clr-accent); }
.footer__nap p { font-size: 0.85rem; margin-bottom: 0.5rem; }
.footer__nap a { color: rgba(255,255,255,.65); transition: color var(--transition); }
.footer__nap a:hover { color: var(--clr-accent); }
.footer__social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}
.footer__social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: rgba(255,255,255,.75);
  transition: background var(--transition), color var(--transition);
  text-decoration: none;
}
.footer__social a:hover { background: var(--clr-accent); color: var(--clr-text); }
.footer__bottom {
  padding-block: 1.25rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,.4);
}

/* ── Floating WhatsApp ── */
.whatsapp-float {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 900;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,.4);
  transition: transform var(--transition), box-shadow var(--transition);
  animation: wa-pulse 2.5s ease-in-out infinite;
}
.whatsapp-float:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(37,211,102,.55); animation: none; }
.whatsapp-float svg { width: 30px; height: 30px; fill: #fff; }
@keyframes wa-pulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,.4); }
  50% { box-shadow: 0 4px 32px rgba(37,211,102,.65); }
}

/* ── Highlight chip ── */
.highlight {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--clr-accent-light);
  color: var(--clr-accent-dark);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
}

/* ── Trust badges strip ── */
.trust-strip {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding: 1.25rem 0;
}
.trust-strip__item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-muted);
}
.trust-strip__item span:first-child { color: var(--clr-success); font-size: 1rem; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__image { display: none; }
  .hero { padding-block: 3.5rem; }
  .hero__content { padding-bottom: 0; }
  .two-col { grid-template-columns: 1fr; gap: 2.5rem; }
  .compare-grid { grid-template-columns: 1fr; }
  .contact-form-wrap { grid-template-columns: 1fr; }
  .contact-options { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 2rem; }
}

@media (max-width: 768px) {
  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }
  .nav__links.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--clr-white);
    padding: 1rem 1.25rem 1.5rem;
    box-shadow: var(--shadow-lg);
    gap: 0.25rem;
  }
  .nav__links.is-open ~ .nav__cta {
    display: block;
    margin: 0 1.25rem 1.25rem;
    text-align: center;
    position: absolute;
    top: calc(var(--nav-h) + 8px + var(--mobile-links-h, 220px));
    left: 0;
    right: 0;
    background: var(--clr-white);
    padding-inline: 1.25rem;
  }
  .footer__inner { grid-template-columns: 1fr; gap: 2rem; }
  .section { padding-block: 3.5rem; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .cards-grid { grid-template-columns: 1fr; }
  .hero__tags { gap: 0.35rem; }
  .grade-cards { grid-template-columns: repeat(2, 1fr); }
}