/* ==========================================================================
   Prakara Learning — International Healthcare Exam Prep
   Design tokens + global styles
   ========================================================================== */

:root {
  /* Brand palette (sampled from Prakara brand mockups) */
  --color-primary: #6950A1;       /* deep purple — headings, primary buttons */
  --color-primary-dark: #4E3B82;  /* hover/active state */
  --color-secondary: #9B84BC;     /* medium lavender — secondary panels */
  --color-tint: #CFB9D9;          /* light lavender — section backgrounds */
  --color-tint-soft: #EFE7F7;     /* very light lavender — subtle backgrounds */
  --color-accent: #DF615C;        /* coral accent — highlights, pins */
  --color-ink: #241C36;           /* near-black purple-grey — body text */
  --color-ink-soft: #6b6478;      /* muted text */
  --color-white: #FFFFFF;
  --color-border: #E4DBF0;

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

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  --shadow-sm: 0 4px 14px rgba(105, 80, 161, 0.10);
  --shadow-md: 0 12px 32px rgba(105, 80, 161, 0.16);
  --shadow-lg: 0 24px 60px rgba(105, 80, 161, 0.22);

  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  margin: 0 0 0.5em;
  line-height: 1.2;
  font-weight: 600;
}

h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); font-weight: 300; }
h1 strong { font-weight: 700; display: block; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; color: var(--color-ink-soft); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { padding: 0; margin: 0; list-style: none; }
button { font-family: var(--font-body); cursor: pointer; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { position: relative; }

.section-pad { padding: 88px 0; }
.section-pad-sm { padding: 56px 0; }

.eyebrow {
  color: var(--color-secondary);
  font-weight: 400;
}
.eyebrow strong { color: var(--color-primary); font-weight: 700; }

.section-head {
  max-width: 640px;
  margin: 0 auto 48px;
  text-align: center;
}
.section-head p { margin-top: 12px; }

/* ---------------------------------- Buttons ---------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: var(--color-white); }
.btn-white {
  background: var(--color-white);
  color: var(--color-primary);
}
.btn-white:hover { background: var(--color-tint-soft); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 0.85rem; }

/* ---------------------------------- Header ---------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 46px; width: auto; }

.main-nav ul { display: flex; align-items: center; gap: 36px; }
.main-nav a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-ink);
  position: relative;
  padding: 6px 0;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--color-primary);
  transition: width 0.2s ease;
}
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }
.main-nav a.active { color: var(--color-primary); }

.header-actions { display: flex; align-items: center; gap: 18px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--color-primary); border-radius: 2px; }

/* ---------------------------------- Hero ---------------------------------- */
.hero {
  padding: 72px 0 60px;
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 40px;
}
.hero-copy p { max-width: 480px; font-size: 1.05rem; }
.hero-media { position: relative; }
.hero-media img { position: relative; z-index: 1; }
.hero-badge {
  position: absolute;
  bottom: 18px;
  left: -10px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 2;
}
.hero-badge .num { font-family: var(--font-heading); font-weight: 700; color: var(--color-primary); font-size: 1.3rem; }
.hero-badge .lbl { font-size: 0.78rem; color: var(--color-ink-soft); }

.hex-decor {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}

/* ---------------------------------- Cards ---------------------------------- */
.tint-section { background: var(--color-tint); }
.tint-soft-section { background: var(--color-tint-soft); }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.info-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.info-card .icon-badge { margin: 0 auto 20px; }
.info-card h3 { margin-bottom: 10px; }
.info-card p { margin: 0; font-size: 0.92rem; }

.icon-badge {
  width: 68px; height: 68px;
  border-radius: 50%;
  background: var(--color-tint-soft);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary);
}
.icon-badge svg { width: 30px; height: 30px; }
.icon-badge.dark { background: var(--color-secondary); color: var(--color-white); }

/* Program / exam cards */
.program-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 22px;
}
.program-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 22px;
  text-align: left;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.program-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.program-card .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  background: var(--color-tint-soft);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.program-card h3 { margin-bottom: 8px; }
.program-card p { font-size: 0.88rem; margin-bottom: 16px; }
.program-card .card-link { font-size: 0.85rem; font-weight: 600; color: var(--color-primary); display: inline-flex; align-items: center; gap: 6px; }

/* ---------------------------------- Tabs (International page) ---------------------------------- */
.tab-switcher {
  display: inline-flex;
  background: var(--color-tint-soft);
  border-radius: var(--radius-pill);
  padding: 6px;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
}
.tab-btn {
  border: none;
  background: transparent;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-primary);
  transition: all 0.2s ease;
}
.tab-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.tab-nav-wrap { display: flex; justify-content: center; margin-bottom: 56px; }

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.35s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.exam-hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; padding-bottom: 56px; }
.exam-hero-copy .eyebrow { font-size: 1.1rem; }
.exam-hero-copy h2 { font-size: clamp(2rem, 3.4vw, 2.8rem); margin-top: 4px; }
.exam-hero-copy p { max-width: 500px; }
.exam-hero-media img, .exam-hero-media svg { max-width: 380px; margin: 0 auto; }

.key-features {
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px 44px;
}
.key-features h3 { color: var(--color-white); font-size: 1.4rem; margin-bottom: 24px; }
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px 40px; }
.feature-list li { display: flex; gap: 12px; }
.feature-list strong { color: var(--color-white); }
.feature-list p { color: rgba(255,255,255,0.85); margin: 4px 0 0; font-size: 0.92rem; }
.feature-list .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--color-white); margin-top: 8px; flex-shrink: 0;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.platform-item { text-align: center; padding: 10px; }
.platform-item h4 { font-size: 1rem; margin: 16px 0 8px; color: var(--color-primary); }
.platform-item p { font-size: 0.88rem; margin: 0; }

/* ---------------------------------- Testimonials ---------------------------------- */
.testimonial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.testimonial-card {
  background: var(--color-tint-soft);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  position: relative;
}
.testimonial-card .quote-mark { font-family: var(--font-heading); font-size: 2.6rem; color: var(--color-secondary); line-height: 1; }
.testimonial-card p { color: var(--color-ink); font-size: 0.95rem; }
.testimonial-card .who strong { display: block; color: var(--color-primary); }
.testimonial-card .who span { font-size: 0.82rem; color: var(--color-ink-soft); }

/* ---------------------------------- CTA banner ---------------------------------- */
.cta-banner {
  background: linear-gradient(120deg, var(--color-primary), #4E3B82);
  border-radius: var(--radius-lg);
  padding: 56px;
  color: var(--color-white);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 30px;
  overflow: hidden;
}
.cta-banner h2, .cta-banner p { color: var(--color-white); }
.cta-banner p { color: rgba(255,255,255,0.85); }

/* ---------------------------------- Footer ---------------------------------- */
.site-footer { background: var(--color-primary); color: rgba(255,255,255,0.85); padding: 64px 0 28px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 48px; }
.footer-brand img { height: 44px; margin-bottom: 16px; filter: brightness(0) invert(1); }
.footer-brand p { color: rgba(255,255,255,0.7); font-size: 0.9rem; max-width: 280px; }
.site-footer h4 { color: var(--color-white); font-size: 0.95rem; margin-bottom: 18px; }
.site-footer ul li { margin-bottom: 10px; }
.site-footer a { color: rgba(255,255,255,0.75); font-size: 0.9rem; }
.site-footer a:hover { color: var(--color-white); }
.social-row { display: flex; gap: 12px; margin-top: 18px; }
.social-row a {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.12);
  display: flex; align-items: center; justify-content: center;
}
.social-row svg { width: 16px; height: 16px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 22px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
  font-size: 0.82rem; color: rgba(255,255,255,0.6);
}

/* ---------------------------------- About page ---------------------------------- */
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.approach-panel {
  background: var(--color-tint);
  border-radius: var(--radius-lg);
  padding: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  text-align: center;
}
.approach-panel .icon-badge { background: var(--color-white); margin: 0 auto 16px; }
.approach-panel h3, .approach-panel p { color: var(--color-white); }
.approach-panel p { color: rgba(255,255,255,0.85); font-size: 0.9rem; margin: 0; }

.values-section { background: linear-gradient(120deg, var(--color-tint), var(--color-secondary)); color: var(--color-white); }
.values-section h2 { color: var(--color-white); }
.values-checklist { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 40px; }
.values-checklist li { display: flex; align-items: center; gap: 12px; font-weight: 500; }
.check-dot {
  width: 30px; height: 30px; border-radius: 50%; background: rgba(255,255,255,0.25);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.check-dot svg { width: 15px; height: 15px; }

.why-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 50px; align-items: center; }
.why-pills { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.why-pill {
  background: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  font-family: var(--font-heading);
  font-weight: 600;
}

.founders-section { background: var(--color-tint); text-align: center; }
.founders-grid { display: flex; justify-content: center; gap: 60px; margin-top: 40px; flex-wrap: wrap; }
.founder-card img {
  width: 160px; height: 160px; border-radius: 50%; object-fit: cover;
  margin: 0 auto 16px; box-shadow: var(--shadow-md); border: 4px solid var(--color-white);
}
.founder-card strong { display: block; color: var(--color-primary); font-family: var(--font-heading); }
.founder-card span { font-size: 0.85rem; color: var(--color-ink-soft); }

/* ---------------------------------- Contact page ---------------------------------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 50px; }
.contact-info-card {
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 44px 38px;
}
.contact-info-card h3 { color: var(--color-white); }
.contact-line { display: flex; gap: 14px; margin: 22px 0; align-items: flex-start; }
.contact-line .icon-badge { background: rgba(255,255,255,0.15); color: var(--color-white); flex-shrink: 0; width: 46px; height: 46px; }
.contact-line .icon-badge svg { width: 20px; height: 20px; }
.contact-line strong { display: block; color: var(--color-white); font-size: 0.95rem; }
.contact-line span, .contact-line a { color: rgba(255,255,255,0.8); font-size: 0.9rem; }

.contact-form { background: var(--color-white); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 42px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 8px; color: var(--color-ink); }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 13px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-ink);
  background: var(--color-white);
  transition: border-color 0.2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}
.field textarea { resize: vertical; min-height: 120px; }
.field .error-msg { display: none; color: var(--color-accent); font-size: 0.78rem; margin-top: 6px; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: var(--color-accent); }
.field.invalid .error-msg { display: block; }
.form-status {
  display: none;
  margin-top: 18px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: var(--color-tint-soft);
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 600;
}
.form-status.show { display: block; }

.map-embed {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-top: 40px;
  height: 320px;
}
.map-embed iframe { width: 100%; height: 100%; border: 0; }

/* ---------------------------------- Utility ---------------------------------- */
.center { text-align: center; }
.mt-40 { margin-top: 40px; }
.flex-center { display: flex; align-items: center; justify-content: center; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .card-grid, .program-grid { grid-template-columns: repeat(3, 1fr); }
  .program-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .main-nav { position: fixed; top: 84px; left: 0; right: 0; background: var(--color-white); flex-direction: column; padding: 20px 24px 30px; box-shadow: var(--shadow-md); transform: translateY(-130%); transition: transform 0.25s ease; }
  .main-nav.open { transform: translateY(0); }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: 18px; }
  .nav-toggle { display: flex; }
  .hero .container, .story-grid, .why-grid, .exam-hero, .contact-grid, .cta-banner { grid-template-columns: 1fr; }
  .hero-media { order: -1; }
  .card-grid, .program-grid, .approach-panel, .values-checklist, .platform-grid, .testimonial-grid { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .section-pad { padding: 60px 0; }
  .card-grid, .program-grid, .approach-panel, .values-checklist, .platform-grid, .testimonial-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 36px 26px; text-align: center; }
  .contact-form { padding: 28px; }
  .founders-grid { gap: 30px; }
  .site-header .container { height: 72px; }
  .brand img { height: 38px; }
}