/* ==========================================================================
   Tuition Hub Delhi — Landing Page Styles
   Mobile-first responsive CSS. Breakpoints: 640 / 768 / 1024 / 1280
   ========================================================================== */

:root {
  --primary: #7C0219;
  --primary-dark: #7C0219;
  --primary-light: #3B5BC4;
  --secondary: #0EA5A4;
  --accent: #25D366;
  --accent-dark: #e2650a;
  --dark: #7C0219;
  --gray-700: #374151;
  --gray-500: #6B7280;
  --gray-200: #E5E7EB;
  --gray-100: #F3F4F6;
  --light: #F8FAFC;
  --white: #FFFFFF;
  --success: #16A34A;
  --error: #DC2626;

  --font-heading: 'Poppins', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(30, 58, 138, 0.09);
  --shadow-lg: 0 20px 50px rgba(30, 58, 138, 0.16);
  --container-w: 1180px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: var(--font-heading); line-height: 1.25; margin: 0 0 .5em; color: var(--dark); }
p { margin: 0 0 1em; color: var(--gray-700); }
button { font-family: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: 20px;
}

.skip-link {
  position: absolute;
  top: 12px;
  left: 12px;
  transform: translateY(-150%);
  background: var(--primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: transform .15s ease;
}
.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--secondary);
  outline-offset: 2px;
}

#contact { scroll-margin-top: 84px; }

/* ---------- Scroll reveal ----------
   Progressive enhancement: content is visible by default. JS adds
   "js-enabled" to <html> as its first action, and only THEN do .reveal
   elements get hidden-then-animated-in. If script.js never runs (blocked,
   fails to load, JS disabled), nothing here ever applies and every
   section stays fully visible. */
html.js-enabled .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s cubic-bezier(.22,.61,.36,1), transform .6s cubic-bezier(.22,.61,.36,1);
}
html.js-enabled .reveal.is-visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html.js-enabled .reveal { transition: none; opacity: 1; transform: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 22px;
  border-radius: 999px;
  border: 2px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(255, 122, 26, 0.35);
}
.btn-accent:hover { background: var(--accent-dark); }
.btn-outline {
  background: transparent;
  border-color: var(--white);
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-outline-light {
  background: transparent;
  border-color: rgba(255,255,255,0.7);
  color: #fff;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.15); }
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-sm { padding: 9px 16px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--gray-200);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 10px;
  gap: 12px;
  position: relative;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.logo-img {
  height: 52px;
  width: auto;
}

/* ---------- Nav ---------- */
.site-nav {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  flex-direction: column;
  padding: 8px 20px 16px;
  display: none;
  gap: 2px;
}
.site-nav.open { display: flex; }
.site-nav a {
  padding: 12px 10px;
  font-weight: 700;
  font-size: 17px;
  color: var(--dark);
  border-radius: 8px;
}
.site-nav a:hover,
.site-nav a:focus-visible { background: var(--gray-100); color: var(--primary); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  padding: 0;
  flex-shrink: 0;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2.5px;
  background: var(--dark);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

@media (min-width: 900px) {
  .header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
  }
  .nav-toggle { display: none; }
  .site-nav {
    position: static;
    display: flex !important;
    flex-direction: row;
    justify-content: center;
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
    gap: 8px;
    margin: 0;
  }
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--primary) 0%, var(--primary-dark) 55%, #7C0219 100%);
  color: #fff;
  padding-block: 40px 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(14,165,164,0.35), transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  gap: 32px;
  position: relative;
  z-index: 1;
}
.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
  color: #BFD0FF;
  margin-bottom: 12px;
}
.hero h1 {
  color: #fff;
  font-size: clamp(28px, 6vw, 44px);
  font-weight: 800;
  margin-bottom: 16px;
}
.accent-text { color: #FFB37A; }
.hero-sub {
  color: #DCE4FA;
  font-size: 16px;
  max-width: 55ch;
  margin-bottom: 28px;
}
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-cta-row.center { justify-content: center; }

/* ---------- Lead Form ---------- */
.hero-form-wrap { position: relative; z-index: 1; }
.lead-form {
  background: #fff;
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow-lg);
  color: var(--dark);
}
.lead-form h2 {
  font-size: 21px;
  margin-bottom: 20px;
}
.field { margin-bottom: 14px; }
.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--gray-700);
}
.field input,
.field select {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  background: #fff;
  color: var(--dark);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus,
.field select:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(14,165,164,0.15);
  outline: none;
}
.field input:invalid:not(:placeholder-shown) {
  border-color: var(--error);
}

.role-options {
  display: flex;
  gap: 8px;
}
.role-option {
  flex: 1;
  position: relative;
  margin: 0;
}
.role-option input {
  position: absolute;
  inset: 0;
  opacity: 0;
  margin: 0;
  cursor: pointer;
}
.role-option span {
  display: block;
  text-align: center;
  padding: 10px 8px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.role-option input:checked + span {
  border-color: var(--secondary);
  background: var(--secondary);
  color: #fff;
}
.role-option input:focus-visible + span {
  outline: 3px solid var(--secondary);
  outline-offset: 2px;
}

.form-status {
  min-height: 20px;
  font-size: 13.5px;
  font-weight: 600;
  text-align: center;
  margin: 10px 0 0;
}
.form-status.success { color: var(--success); }
.form-status.error { color: var(--error); }
/* WhatsApp button shown only when the visitor already submitted (duplicate) */
.btn-whatsapp-dup {
  margin-top: 12px;
  background: #25D366;
  border-color: #25D366;
  color: #fff;
  text-align: center;
}
.btn-whatsapp-dup:hover { background: #1EBE5A; border-color: #1EBE5A; color: #fff; }
.btn-whatsapp-dup[hidden] { display: none; }
.form-privacy {
  font-size: 12px;
  color: var(--gray-500);
  text-align: center;
  margin: 10px 0 0;
}

/* ---------- Stats / track record ---------- */
.stats-section {
  position: relative;
  background: linear-gradient(160deg, var(--primary) 0%, #7C0219 55%, #7C0219 100%);
  padding-block: 60px;
  overflow: hidden;
  scroll-margin-top: 84px;
}
.stats-glow {
  position: absolute;
  inset: -35% -8% auto auto;
  width: 440px;
  height: 440px;
  background: radial-gradient(circle, rgba(14,165,164,0.35), transparent 70%);
  pointer-events: none;
}
.stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.stat-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.14);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 26px 16px;
  text-align: center;
  transition: transform .25s ease, background .25s ease;
}
.stat-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.12);
}
.stat-icon { font-size: 28px; margin-bottom: 8px; }
.stat-value {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 32px);
  color: #fff;
  line-height: 1.1;
}
.stat-label {
  margin-top: 6px;
  font-size: 13px;
  font-weight: 600;
  color: #C7D3F5;
}

/* ---------- Sections ---------- */
.section { padding-block: 56px; scroll-margin-top: 84px; }
.section-alt { background: var(--light); }

.section-head { text-align: center; margin-bottom: 40px; }
.section-head .section-title { margin-bottom: 0; }
.section-head .section-sub { margin: 10px auto 0; }

.section-title {
  font-size: clamp(24px, 4vw, 32px);
  text-align: center;
  margin-bottom: 0;
}
.section-title-left { text-align: left; margin-bottom: 16px; }
.section-sub {
  text-align: center;
  color: var(--gray-500);
  max-width: 60ch;
  margin: 0 auto;
}
.eyebrow-dark {
  color: var(--secondary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  font-size: 13px;
}

/* About */
.about-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  height: 320px;
}

/* Neutral placeholder for a not-yet-supplied photo (see TODO comments in index.html) */
.photo-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 100%;
  background: var(--light);
  border: 1.5px dashed var(--gray-200);
  color: var(--gray-500);
  font-size: 13px;
  font-weight: 600;
  text-align: center;
}
.placeholder-icon { opacity: .5; }

/* Once a real photo is dropped in, fill the box instead of shrink-wrapping
   the image at its natural size (which was overflowing past the card and
   covering the text below it), and drop the placeholder's dashed frame. */
.photo-placeholder:has(img) {
  border: none;
  background: none;
  padding: 0;
}
.about-image img,
.offer-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* What We Offer */
.offer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.offer-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.offer-image {
  height: 220px;
}
.offer-body { padding: 22px; }
.offer-body h3 { font-size: 19px; margin-bottom: 6px; }
.offer-list { margin: 14px 0 18px; }
.offer-list li {
  font-size: 14px;
  color: var(--gray-700);
  padding-left: 22px;
  position: relative;
  margin-bottom: 8px;
}
.offer-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: 700;
}

/* Areas we cover */
.areas-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.area-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
}
.area-card h3 { font-size: 15px; margin-bottom: 4px; color: var(--primary); }
.area-card p { font-size: 13.5px; margin: 0; color: var(--gray-500); }

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 22px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.feature-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.feature-icon { font-size: 28px; margin-bottom: 10px; }
.feature-card h3 { font-size: 17px; margin-bottom: 6px; }
.feature-card p { font-size: 14.5px; margin: 0; }

/* Classes */
.classes-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.class-card {
  background: #fff;
  border-left: 4px solid var(--secondary);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.class-card h3 { font-size: 16px; margin-bottom: 4px; color: var(--primary); }
.class-card p { font-size: 14px; margin: 0; }

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 36px;
}
.step { text-align: center; }
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 18px;
}
.step h3 { font-size: 16px; margin-bottom: 4px; }
.step p { font-size: 14px; }
.center-cta { text-align: center; }

/* Testimonials carousel */
.testimonial-carousel {
  position: relative;
  padding: 0 4px;
}
.testimonial-track {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  padding: 4px 4px 12px;
  margin: 0 -4px;
}
.testimonial-track::-webkit-scrollbar { display: none; }
.testimonial-card {
  scroll-snap-align: start;
  flex: 0 0 100%;
  position: relative;
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.testimonial-quote-mark {
  position: absolute;
  top: -6px;
  right: 16px;
  font-family: var(--font-heading);
  font-size: 64px;
  font-weight: 800;
  color: var(--secondary);
  opacity: .18;
  line-height: 1;
}
.testimonial-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 12px;
}
.testimonial-name { font-size: 16px; margin-bottom: 2px; }
.testimonial-role { font-size: 13px; color: var(--gray-500); margin-bottom: 8px; }
.testimonial-stars { color: var(--accent); font-size: 15px; letter-spacing: 2px; margin-bottom: 12px; }
.testimonial-text { font-size: 14.5px; color: var(--gray-700); margin: 0; position: relative; z-index: 1; }

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--gray-200);
  background: #fff;
  color: var(--primary);
  font-size: 22px;
  line-height: 1;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  cursor: pointer;
}
.carousel-arrow:hover { background: var(--primary); color: #fff; }
.carousel-prev { left: -14px; }
.carousel-next { right: -14px; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 8px;
}
.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-200);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}
.carousel-dot.active { background: var(--secondary); transform: scale(1.3); }

/* FAQ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-bottom: 10px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 20px;
  color: var(--secondary);
  margin-left: 12px;
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p { margin-top: 10px; font-size: 14.5px; }

/* Final CTA */
.final-cta {
  background: linear-gradient(135deg, var(--secondary), var(--secondary));
  color: #fff;
  padding-block: 56px;
  text-align: center;
}
.final-cta-inner h2 { color: #fff; font-size: clamp(24px, 4vw, 32px); }
.final-cta-inner p { color: #E4FBFA; margin-bottom: 24px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--dark);
  color: #C9CEDA;
  padding-top: 48px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 32px;
}
.footer-brand { max-width: 320px; }
.site-footer h3 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 12px;
}
.footer-tagline { font-size: 14px; margin-top: 10px; color: #fff; }
.footer-list li { font-size: 14px; margin-bottom: 8px; }
.footer-list a:hover { color: #fff; }
.logo-footer { color: #fff; }
.logo-img-footer {
  height: 60px;
  background: #fff;
  border-radius: 12px;
  padding: 6px 10px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-block: 18px;
  font-size: 13px;
  text-align: center;
}
.footer-bottom p { margin: 0; color: #8B93A7; }

/* ---------- Floating action buttons ---------- */
.fab-stack {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 150;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.fab {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 8px 22px rgba(17, 24, 39, 0.28);
  transition: transform .15s ease;
}
.fab:hover { transform: scale(1.08); }
.fab-whatsapp { background: #25D366; }
.fab-phone { background: var(--primary-light); }

@media (min-width: 768px) {
  .fab-stack { right: 28px; bottom: 28px; }
}

/* ==========================================================================
   Breakpoints
   ========================================================================== */

@media (min-width: 640px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .classes-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-card { flex: 0 0 calc(50% - 10px); }
  .field-row { grid-template-columns: 1fr 1fr; }
  .offer-grid { grid-template-columns: repeat(2, 1fr); }
  .areas-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .steps-grid { grid-template-columns: repeat(4, 1fr); }
  .testimonial-card { flex: 0 0 calc(33.333% - 14px); }
  .carousel-arrow { display: flex; }
  .areas-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1.2fr; gap: 24px; }
}

@media (min-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .classes-grid { grid-template-columns: repeat(3, 1fr); }
  .about-inner { grid-template-columns: 1.2fr 0.8fr; }
  .areas-grid { grid-template-columns: repeat(4, 1fr); }
}