/* ==========================================================================
   Ms. Vila — Primary Maths & Science Tuition
   Palette + type inspired by a warm, editorial "classroom" mood.
   ========================================================================== */

:root {
  --sage-900: #33402E;
  --sage-800: #445939;
  --sage-700: #5C7A4C;
  --sage-600: #7C9A69;
  --cream-50:  #FCFAF3;
  --cream-100: #F3ECDA;
  --cream-200: #E9DEC4;
  --ink-900: #292A22;
  --ink-600: #585747;
  --ink-400: #87856E;
  --gold-500: #D98E3F;
  --gold-600: #C07530;
  --wa-green: #25D366;
  --wa-green-dark: #1DA851;

  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Work Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container-w: 1160px;
  --radius-lg: 28px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --shadow-soft: 0 20px 40px -20px rgba(42, 33, 28, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink-900);
  background: var(--cream-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; margin: 0 0 0.5em; line-height: 1.15; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }

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

.eyebrow {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gold-600);
  margin: 0 0 0.9em;
}
.eyebrow.center { text-align: center; }
/* The hero sits on a dark sage gradient, where the default gold-on-green pairing
   has too little contrast to read easily — give it a dedicated, high-contrast style. */
.hero .eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--cream-50);
  font-weight: 700;
}
.hero .eyebrow::before {
  content: "";
  display: inline-block;
  width: 28px;
  height: 2px;
  background: var(--gold-500);
  flex: none;
}
.section-title.center { text-align: center; }
.section-title { font-size: clamp(1.8rem, 3vw, 2.4rem); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--wa-green);
  color: #fff;
  box-shadow: 0 10px 24px -8px rgba(37, 211, 102, 0.55);
}
.btn-primary:hover { background: var(--wa-green-dark); }
.btn-ghost {
  background: transparent;
  color: var(--cream-50);
  border: 1.5px solid rgba(251, 241, 228, 0.55);
}
.btn-ghost:hover { border-color: var(--cream-50); }
.btn-lg { padding: 16px 32px; font-size: 1.05rem; }
.icon-wa { width: 20px; height: 20px; fill: currentColor; flex: none; }
.btn-whatsapp { background: var(--wa-green); color: #fff; }
.btn-whatsapp:hover { background: var(--wa-green-dark); }

/* ---------- Nav ---------- */
.nav-wrap {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 253, 248, 0.9);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--cream-200);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  gap: 20px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--sage-800);
}
.nav-logo { width: 34px; height: 34px; flex: none; }
.nav-links {
  display: flex;
  gap: 28px;
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-links a { color: var(--ink-600); }
.nav-links a:hover { color: var(--sage-800); }
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span { display: block; height: 2px; background: var(--ink-900); border-radius: 2px; }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(120% 140% at 15% 10%, var(--sage-600) 0%, var(--sage-700) 45%, var(--sage-900) 100%);
  color: var(--cream-100);
  padding: 90px 0 100px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  color: var(--cream-50);
}
.hero-title em { font-style: italic; color: var(--gold-500); }
.hero-sub {
  font-size: 1.08rem;
  color: var(--cream-200);
  max-width: 46ch;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }

.hero-visual { display: flex; justify-content: center; }
.visual-card {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.visual-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.visual-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(51, 64, 46, 0.75) 0%, rgba(51, 64, 46, 0) 45%);
}
.visual-badge {
  position: absolute;
  left: 20px;
  bottom: 20px;
  background: var(--cream-50);
  color: var(--sage-800);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1rem;
  text-align: center;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  line-height: 1.3;
  box-shadow: 0 10px 20px -8px rgba(0, 0, 0, 0.3);
}

/* ---------- Stats ---------- */
.stats { background: var(--cream-100); padding: 40px 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--sage-800);
}
.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-600);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 4px;
}

/* ---------- About ---------- */
.about { padding: 100px 0; }
.about-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 64px;
  align-items: center;
}
.about-portrait {
  max-width: 260px;
  margin: 0 auto;
}
.portrait-frame {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, var(--cream-100), var(--cream-200));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  box-shadow: var(--shadow-soft);
}
.portrait-logo {
  width: 100%;
  height: auto;
}
.about-copy h2 { font-size: clamp(1.7rem, 3vw, 2.2rem); }
.about-points { margin-top: 20px; display: grid; gap: 10px; }
.about-points li {
  padding-left: 28px;
  position: relative;
  color: var(--ink-600);
  font-weight: 500;
}
.about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-500);
}

/* ---------- Subjects ---------- */
.subjects { background: var(--cream-100); padding: 100px 0; }
.subjects-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.subject-card {
  background: var(--cream-50);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  box-shadow: 0 12px 30px -18px rgba(42, 33, 28, 0.25);
}
.subject-icon {
  width: 48px;
  height: 48px;
  color: var(--sage-700);
  margin-bottom: 18px;
}
.subject-icon svg { width: 100%; height: 100%; }
.subject-card h3 { font-size: 1.15rem; }
.subject-card p { color: var(--ink-600); font-size: 0.95rem; margin: 0; }

/* ---------- Testimonials ---------- */
.testimonials { padding: 100px 0; }
.testimonials-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.testimonial-card {
  margin: 0;
  background: var(--cream-100);
  border-radius: var(--radius-md);
  padding: 32px;
  border-left: 4px solid var(--gold-500);
}
.testimonial-card p {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--ink-900);
}
.testimonial-card cite {
  font-style: normal;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink-600);
}

/* ---------- CTA ---------- */
.cta {
  background: linear-gradient(155deg, var(--sage-700), var(--sage-900));
  color: var(--cream-50);
  padding: 90px 0;
  text-align: center;
}
.cta-inner { max-width: 640px; margin: 0 auto; }
.cta h2 { font-size: clamp(1.8rem, 3.4vw, 2.4rem); }
.cta p { color: var(--cream-200); margin-bottom: 32px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--sage-900); color: var(--cream-200); padding: 40px 0; }
.footer-inner { text-align: center; }
.footer-brand { display: block; font-size: 1.2rem; margin-bottom: 8px; color: var(--cream-50); }
.footer-inner p { margin: 4px 0; font-size: 0.9rem; }
.footer-copy { color: var(--ink-400); }

/* ---------- Floating WhatsApp button ---------- */
.wa-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 60;
}
.wa-float a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--wa-green);
  box-shadow: 0 12px 24px -8px rgba(37, 211, 102, 0.6);
}
.wa-float svg { width: 28px; height: 28px; fill: #fff; }
.wa-float a:hover { background: var(--wa-green-dark); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 280px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; }
  .about-portrait { max-width: 280px; margin: 0 auto; }
  .subjects-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 28px; }
}

@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream-50);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    border-bottom: 1px solid var(--cream-200);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-cta { display: none; }
  .subjects-grid { grid-template-columns: 1fr; }
}