/* ============================================================
   MATHS PATH TUTORING — styles.css (v2)
   ============================================================ */

:root {
  --sage: #4A7A54;
  --sage-light: #D8E8DA;
  --sage-deep: #366040;
  --sage-hover: #3A6644;
  --ink: #1A1A18;
  --ink-mid: #3D3D3A;
  --ink-light: #6B6B67;
  --cream: #EAE5D8;
  --white: #F2EDE0;
  --bg-section: #E8E2D4;
  --border: #D8D2C4;
  --border-strong: #C4BEB0;

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-label: 'Syne', system-ui, sans-serif;

  --max-w: 1160px;
  --radius: 2px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --section-pad: 7rem 2rem;
  --header-h: 68px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.accent { color: var(--sage); }
.logo-green { color: var(--sage); }
.logo-dark { color: var(--ink); }

.btn {
  display: inline-block;
  font-family: var(--font-label);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.9rem 2.2rem;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary { background: var(--sage); color: #fff; border-color: var(--sage); }
.btn-primary:hover { background: var(--sage-deep); border-color: var(--sage-deep); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink-mid); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--sage); color: var(--sage); transform: translateY(-1px); }

.section-tag {
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 1.2rem;
}

.section-heading {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.15;
  color: var(--ink);
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.section-inner { max-width: var(--max-w); margin: 0 auto; padding: 0 2rem; }
.section { padding: var(--section-pad); }

/* ---- HEADER ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(242, 237, 224, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
  height: var(--header-h);
}
.site-header.scrolled { border-bottom-color: var(--border); box-shadow: 0 2px 20px rgba(0,0,0,0.06); }

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  font-family: var(--font-label);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.main-nav { display: flex; align-items: center; gap: 0.25rem; }

.nav-link {
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink-mid); background: rgba(0,0,0,0.07); }
.nav-link.nav-cta { background: var(--sage); color: #fff; margin-left: 0.5rem; padding: 0.5rem 1.2rem; }
.nav-link.nav-cta:hover { background: var(--sage-deep); color: #fff; }

.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; z-index: 110; }
.burger span { display: block; width: 22px; height: 1.5px; background: var(--ink); transition: var(--transition); }
.burger.open span:first-child { transform: translateY(6.5px) rotate(45deg); }
.burger.open span:last-child { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  top: var(--header-h); left: 0; right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 1rem 2rem 1.5rem;
  gap: 0.25rem;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), opacity 0.3s;
  pointer-events: none;
}
.mobile-nav.open { transform: translateY(0); opacity: 1; pointer-events: all; }
.mobile-nav-link {
  font-family: var(--font-label);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mid);
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}
.mobile-nav-link:hover { color: var(--sage); }

/* ---- HERO ---- */
.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--header-h) + 4rem) 2rem 5rem;
  max-width: var(--max-w);
  margin: 0 auto;
}

.hero-eyebrow {
  font-family: var(--font-label);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 1.8rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.1s forwards;
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(3.4rem, 8vw, 6.5rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1.2rem;
  max-width: 820px;
  opacity: 0;
  animation: fadeUp 0.9s 0.2s forwards;
}

.hero-founder {
  font-family: var(--font-label);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.35s forwards;
}

.hero-sub {
  font-size: 1.2rem;
  font-weight: 300;
  color: var(--ink-mid);
  max-width: 560px;
  line-height: 1.65;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.45s forwards;
}

.hero-cta-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.55s forwards;
}

/* Pillars */
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  opacity: 0;
  animation: fadeUp 0.8s 0.7s forwards;
}

.pillar { background: var(--white); padding: 1.8rem 1.6rem; transition: background 0.25s; }
.pillar:hover { background: var(--cream); }

.pillar-label {
  font-family: var(--font-label);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.6rem;
  letter-spacing: 0.01em;
}
.accent-label { color: var(--sage); font-size: 0.95rem; }

.pillar-text { font-size: 0.88rem; color: var(--ink-mid); line-height: 1.6; }

/* ---- ABOUT ---- */
.about-section { background: var(--bg-section); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.about-grid { display: grid; grid-template-columns: 1fr 0.75fr; gap: 5rem; align-items: center; }
.about-text p { color: var(--ink-mid); line-height: 1.8; margin-bottom: 1.2rem; font-size: 1.05rem; }
.about-photo { display: flex; justify-content: center; }

.tutor-photo {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
  border: 5px solid var(--white);
  box-shadow: 0 8px 40px rgba(0,0,0,0.14);
}

/* ---- WHO I SUPPORT ---- */
.support-section { background: var(--white); }

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 3rem;
}

.support-card { background: var(--white); padding: 2.6rem 2.4rem; transition: background 0.25s; }
.support-card:hover { background: var(--cream); }
.support-card--accent { background: var(--sage-light); }
.support-card--accent:hover { background: #ccdece; }

.support-card-index {
  font-family: var(--font-label);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 0.8rem;
}
.support-card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.55rem;
  color: var(--ink);
  margin-bottom: 0.85rem;
  line-height: 1.2;
}
.support-card p { font-size: 0.97rem; color: var(--ink-mid); line-height: 1.72; }

/* ---- HOW IT WORKS ---- */
.how-section { background: var(--bg-section); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-intro { color: var(--ink-mid); font-size: 1.05rem; margin-bottom: 4rem; max-width: 500px; }

.steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.step { display: flex; gap: 1.5rem; padding: 2.6rem 2.4rem; background: var(--white); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); transition: background 0.25s; }
.step:hover { background: var(--cream); }
.step:nth-child(even) { border-right: none; }
.step:nth-child(3), .step:nth-child(4) { border-bottom: none; }
.step-number { font-family: var(--font-display); font-size: 3.2rem; font-weight: 300; color: var(--sage); line-height: 1; flex-shrink: 0; margin-top: -0.3rem; }
.step-content h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.4rem; color: var(--ink); margin-bottom: 0.3rem; }
.step-sub { font-family: var(--font-label); font-size: 0.7rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sage); margin-bottom: 0.8rem; }
.step-content p { font-size: 0.95rem; color: var(--ink-mid); line-height: 1.72; }

/* ---- APPROACH ---- */
.approach-section { background: var(--ink); }
.approach-section .section-tag { color: var(--sage); }
.approach-section .section-heading { color: #F2EDE0; }
.approach-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 6rem; align-items: start; }

.approach-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.35rem, 2.5vw, 1.9rem);
  color: var(--sage);
  line-height: 1.4;
  border-left: 3px solid var(--sage);
  padding-left: 1.5rem;
  margin-top: 2rem;
}

.approach-right p { color: rgba(242, 237, 224, 0.72); line-height: 1.78; margin-bottom: 1.2rem; font-size: 1rem; }

.specialisms { margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.1); }
.specialism-list { display: flex; flex-direction: column; gap: 0.55rem; }
.specialism-list li { font-size: 0.92rem; color: rgba(242, 237, 224, 0.65); padding-left: 1.1rem; position: relative; }
.specialism-list li::before { content: '+'; position: absolute; left: 0; color: var(--sage); font-size: 0.85rem; font-weight: 700; }

/* ---- CONTACT ---- */
.contact-section { background: var(--white); }
.contact-inner { max-width: 640px; }
.contact-body { font-size: 1.15rem; color: var(--ink-mid); line-height: 1.78; margin-bottom: 2.5rem; font-weight: 300; }
.contact-email {
  display: inline-block;
  font-family: var(--font-label);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--sage);
  border-bottom: 2px solid var(--sage);
  padding-bottom: 0.15rem;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: 1.2rem;
}
.contact-email:hover { color: var(--sage-deep); border-color: var(--sage-deep); }
.contact-response { font-family: var(--font-label); font-size: 0.74rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-light); }

/* ---- FOOTER ---- */
.site-footer { background: var(--bg-section); border-top: 1px solid var(--border); padding: 3rem 2rem; }
.footer-inner { max-width: var(--max-w); margin: 0 auto; display: flex; flex-direction: column; align-items: center; gap: 0.5rem; text-align: center; }
.footer-logo { font-family: var(--font-label); font-weight: 700; font-size: 0.98rem; letter-spacing: 0.02em; margin-bottom: 0.5rem; }
.footer-tagline { font-family: var(--font-label); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-light); }
.footer-copy { font-size: 0.82rem; color: var(--ink-light); margin-top: 0.5rem; }

/* ---- ANIMATIONS ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s cubic-bezier(0.4,0,0.2,1), transform 0.7s cubic-bezier(0.4,0,0.2,1); }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 3rem; }
  .about-photo { order: -1; }
  .tutor-photo { max-width: 200px; }
  .approach-inner { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 820px) {
  :root { --section-pad: 5rem 1.5rem; }
  .main-nav { display: none; }
  .burger { display: flex; }
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .pillar-text { font-size: 0.92rem; }
  .support-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step { border-right: none; }
  .step:nth-child(3) { border-bottom: 1px solid var(--border); }
}

@media (max-width: 560px) {
  :root { --section-pad: 4rem 1.25rem; --header-h: 60px; }
  .hero { padding-top: calc(var(--header-h) + 3rem); padding-bottom: 4rem; }
  .hero-cta-row { flex-direction: column; }
  .btn { text-align: center; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { padding: 1.4rem 1.4rem; }
  .pillar-label { font-size: 1.2rem; }
  .pillar-text { font-size: 0.95rem; }
  .step { flex-direction: column; gap: 0.75rem; }
  .step-number { font-size: 2.2rem; }
  .support-card, .step { padding: 1.8rem 1.5rem; }
  .support-card h3 { font-size: 1.4rem; }
  .support-card p, .step-content p { font-size: 1rem; }
}

:focus-visible { outline: 2px solid var(--sage); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}