/* ============================================================
   6–12 Tutoring — custom styles
   Tailwind handles most layout/spacing via utility classes in the
   HTML. This file holds: design tokens, font tuning, reusable
   component styles, decorative textures, and keyframe animations.
   ============================================================ */

:root {
  --sage: #6D8654;
  --sage-dark: #566c43;
  --ink: #131411;
  --canvas: #EDECED;

  --shadow-soft: 0 10px 40px -12px rgba(19, 20, 17, 0.18);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body { -webkit-font-smoothing: antialiased; }

/* Fine-tune Fraunces optical sizing for big headlines */
.font-display { font-optical-sizing: auto; }
h1.font-display { letter-spacing: -0.02em; }

/* Reusable soft shadow (referenced by Tailwind's shadow-soft via arbitrary value fallback) */
.shadow-soft { box-shadow: var(--shadow-soft); }

/* ---------- Paper-grain texture overlay (warmth) ---------- */
.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Navigation ---------- */
#nav.scrolled {
  background: rgba(237, 236, 237, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(19, 20, 17, 0.06);
}

.nav-link {
  position: relative;
  color: var(--ink);
  transition: color 0.25s var(--ease);
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  height: 1.5px; width: 0;
  background: var(--sage);
  transition: width 0.3s var(--ease);
}
.nav-link:hover { color: var(--sage); }
.nav-link:hover::after { width: 100%; }

.mobile-link {
  display: block;
  padding: 0.6rem 0;
  border-bottom: 1px solid rgba(19, 20, 17, 0.06);
}

/* Hamburger icon */
.burger, .burger::before, .burger::after {
  content: "";
  display: block;
  width: 22px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
}
.burger { position: relative; }
.burger::before { position: absolute; top: -7px; }
.burger::after { position: absolute; top: 7px; }
#menuBtn.open .burger { background: transparent; }
#menuBtn.open .burger::before { transform: translateY(7px) rotate(45deg); }
#menuBtn.open .burger::after { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero decorative orb ---------- */
.hero-orb {
  position: absolute;
  top: -120px; right: -140px;
  width: 520px; height: 520px;
  background: radial-gradient(circle at 30% 30%, rgba(109, 134, 84, 0.28), rgba(109, 134, 84, 0) 68%);
  filter: blur(8px);
  z-index: -1;
  animation: float 14s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-26px, 26px) scale(1.06); }
}

/* ---------- Section eyebrow label ---------- */
.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--sage);
}
.section-eyebrow span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border: 1px solid rgba(109, 134, 84, 0.4);
  border-radius: 999px;
  font-family: "Fraunces", serif;
  font-size: 0.8rem;
  letter-spacing: 0;
}

/* ---------- About: credentials list ---------- */
.cred { display: flex; gap: 0.9rem; align-items: flex-start; }
.cred-year {
  flex-shrink: 0;
  font-family: "Fraunces", serif;
  font-size: 0.8rem;
  color: var(--sage-dark);
  background: rgba(109, 134, 84, 0.12);
  border-radius: 6px;
  padding: 0.2rem 0.5rem;
  min-width: 52px;
  text-align: center;
  margin-top: 0.1rem;
}

/* ---------- Services cards (expandable) ---------- */
.service-card {
  background: var(--canvas);
  border: 1px solid rgba(19, 20, 17, 0.08);
  border-radius: 1.5rem;
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}
.service-card:hover {
  border-color: rgba(109, 134, 84, 0.5);
  box-shadow: var(--shadow-soft);
  transform: translateY(-3px);
}
.service-card.is-open {
  border-color: var(--sage);
}

.service-head {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.15rem 1.25rem;
  text-align: left;
  cursor: pointer;
  background: transparent;
}

.service-icon {
  flex-shrink: 0;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: rgba(109, 134, 84, 0.12);
  color: var(--sage-dark);
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}
.service-icon svg { width: 20px; height: 20px; }
.service-card:hover .service-icon,
.service-card.is-open .service-icon {
  background: var(--sage);
  color: #fff;
}

.service-title {
  display: block;
  font-family: "Fraunces", serif;
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.22;
  color: var(--sage);
  letter-spacing: -0.005em;
}
.service-price {
  display: block;
  margin-top: 0.25rem;
  font-weight: 700;
  color: var(--sage);
  font-size: 0.92rem;
}
.service-price span { font-weight: 500; color: var(--ink); opacity: 0.5; font-size: 0.8rem; }

.service-chev {
  flex-shrink: 0;
  font-family: "Fraunces", serif;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--sage);
  transition: transform 0.35s var(--ease);
}
.service-card.is-open .service-chev { transform: rotate(45deg); }

/* expanding body via max-height transition */
.service-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease);
}
.service-body-inner {
  padding: 0 1.25rem 1.3rem;
  color: var(--ink);
  opacity: 0.82;
  font-size: 0.875rem;
  line-height: 1.55;
}
.service-label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--sage-dark);
  opacity: 1;
  margin-bottom: 0.3rem;
}

/* ---------- Contact form ---------- */
.field-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--ink);
}
.field {
  width: 100%;
  background: #fff;
  border: 1px solid rgba(19, 20, 17, 0.12);
  border-radius: 0.85rem;
  padding: 0.8rem 1rem;
  font-size: 0.95rem;
  color: var(--ink);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.field::placeholder { color: rgba(19, 20, 17, 0.38); }
.field:focus {
  outline: none;
  border-color: var(--sage);
  box-shadow: 0 0 0 4px rgba(109, 134, 84, 0.14);
}

/* segmented radio toggle */
.seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: #fff;
  border: 1px solid rgba(19, 20, 17, 0.12);
  border-radius: 0.85rem;
  padding: 4px;
}
.seg-opt { position: relative; }
.seg-opt input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.seg-opt span {
  display: block;
  text-align: center;
  padding: 0.65rem 0.5rem;
  border-radius: 0.65rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.25s var(--ease), color 0.25s var(--ease);
}
.seg-opt input:checked + span {
  background: var(--sage);
  color: #fff;
}
.seg-opt input:focus-visible + span {
  box-shadow: 0 0 0 3px rgba(109, 134, 84, 0.3);
}

/* multi-select chips */
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.chip span {
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(19, 20, 17, 0.16);
  background: #fff;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--ink);
  transition: all 0.22s var(--ease);
}
.chip:hover span { border-color: var(--sage); }
.chip input:checked + span {
  background: var(--sage);
  border-color: var(--sage);
  color: #fff;
}
.chip input:focus-visible + span { box-shadow: 0 0 0 3px rgba(109, 134, 84, 0.3); }

/* invalid field state (set by JS) */
.field.invalid,
.seg.invalid,
#subjects.invalid { border-color: #c0492f; box-shadow: 0 0 0 3px rgba(192, 73, 47, 0.12); }
#subjects.invalid { border: 1px solid #c0492f; border-radius: 0.85rem; padding: 0.4rem; }

/* submit spinner */
.btn-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Footer socials ---------- */
.social {
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--canvas);
  transition: all 0.25s var(--ease);
}
.social svg { width: 20px; height: 20px; }
.social:hover {
  background: var(--sage);
  border-color: var(--sage);
  transform: translateY(-2px);
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: none;
}