/* ── Nav ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: -.02em;
  color: var(--text);
  text-decoration: none;
}
.logo em { font-style: normal; color: var(--ochre); }

.lang-btn {
  font-family: var(--font-body);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--text-muted);
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  padding: 5px 13px;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease);
}
.lang-btn:hover { color: var(--text); border-color: var(--text-muted); }

/* ── Hero ── */
.hero {
  position: relative;
  padding: 72px 24px 80px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--dot-color) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none;
  z-index: 0;
}
.hero-inner { position: relative; z-index: 1; max-width: 580px; margin: 0 auto; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--ochre);
  background: var(--ochre-faint);
  border-radius: 100px;
  padding: 5px 14px;
  margin-bottom: 30px;
}
.hero-badge::before {
  content: '';
  width: 5px; height: 5px;
  background: var(--ochre);
  border-radius: 50%;
  flex-shrink: 0;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.2rem);
  font-weight: 600;
  font-style: normal;
  line-height: 1.1;
  letter-spacing: -.03em;
  color: var(--text);
  margin-bottom: 20px;
  animation: fadeUp .5s ease both;
}
.hero-sub {
  font-size: clamp(.97rem, 2.2vw, 1.12rem);
  color: var(--text-muted);
  max-width: 400px;
  margin: 0 auto 52px;
  line-height: 1.7;
  animation: fadeUp .5s ease .07s both;
}

/* ── Flip card ── */
.flip-card {
  max-width: 480px;
  margin: 0 auto;
  perspective: 1200px;
  animation: fadeUp .55s ease .12s both;
}
.flip-inner {
  position: relative;
  transform-style: preserve-3d;
  transition: transform .65s cubic-bezier(.4, 0, .2, 1);
}
.flip-card.flipped .flip-inner { transform: rotateY(180deg); }
.flip-front,
.flip-back {
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.flip-back {
  position: absolute;
  inset: 0;
  transform: rotateY(180deg);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Form card ── */
.form-card {
  background: var(--surface);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  padding: 40px 44px 44px;
  text-align: left;
  width: 100%;
}
.form-card h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: -.02em;
  margin-bottom: 6px;
}
.form-card-sub {
  font-size: .87rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.55;
}

/* ── Fields ── */
.field { margin-bottom: 14px; }
.field label {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--text);
  margin-bottom: 6px;
}
.field-hint {
  font-weight: 400;
  letter-spacing: 0;
  color: var(--text-muted);
  margin-left: 4px;
}

/* Select chevron — light */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236A6A5E' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 13px center;
  padding-right: 42px;
  cursor: pointer;
}
/* Select chevron — dark */
@media (prefers-color-scheme: dark) {
  select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238AAB8A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  }
}

/* ── Grade chips ── */
.grade-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 6px 14px;
  border: 1.5px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg);
  cursor: pointer;
  transition: border-color var(--ease), background var(--ease), color var(--ease);
  user-select: none;
}
.chip:hover { border-color: var(--sage-mid); color: var(--text); }
.chip.selected {
  background: var(--sage-faint);
  border-color: var(--sage);
  color: var(--sage);
  font-weight: 600;
}

/* ── Custom school reveal ── */
.custom-school-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .28s ease;
}
.custom-school-wrap.open { grid-template-rows: 1fr; }
.custom-school-inner { overflow: hidden; }
.custom-school-inner .field { margin-top: 14px; margin-bottom: 0; }

/* ── Submit button ── */
.submit-btn {
  width: 100%;
  padding: 14px 24px;
  margin-top: 10px;
  background: var(--sage);
  color: var(--bg);
  border: none;
  border-radius: var(--r-sm);
  font-family: var(--font-body);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: .01em;
  transition: background var(--ease), transform .1s ease, box-shadow var(--ease);
}
.submit-btn:hover:not(:disabled) {
  background: var(--sage-mid);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px var(--btn-shadow);
}
.submit-btn:active:not(:disabled) { transform: translateY(0); box-shadow: none; }
.submit-btn:disabled { opacity: .6; cursor: not-allowed; }

/* ── Success state ── */
.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 8px 0 4px;
}
.success-circle {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--sage-faint);
  color: var(--sage);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 22px;
}
.success-circle svg { width: 26px; height: 26px; }
.success-heading {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 400;
  letter-spacing: -.02em;
  margin-bottom: 10px;
}
.success-msg {
  font-size: .93rem;
  color: var(--text-muted);
  max-width: 320px;
  margin: 0 auto;
  line-height: 1.65;
}

/* ── How it works ── */
.how { background: var(--cream); padding: 88px 24px; }
.how-inner { max-width: 860px; margin: 0 auto; }
.section-label {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 52px;
}
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px 48px; }
.step { display: flex; flex-direction: column; gap: 14px; }
.step-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 300;
  color: var(--ochre);
  line-height: 1;
  opacity: .6;
}
.step-title { font-weight: 600; font-size: .93rem; color: var(--text); margin-bottom: 4px; }
.step-body  { font-size: .91rem; color: var(--text-muted); line-height: 1.65; }

/* ── Mission ── */
.mission { padding: 64px 24px; text-align: center; border-top: 1px solid var(--border); }
.mission-inner { max-width: 520px; margin: 0 auto; }
.mission-icon { font-size: 1.5rem; margin-bottom: 18px; display: block; }
.mission-text { font-size: .93rem; color: var(--text-muted); line-height: 1.75; margin-bottom: 24px; }
.commitments { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.commitment {
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .03em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 14px;
}

/* ── Footer ── */
footer { padding: 36px 32px; border-top: 1px solid var(--border); text-align: center; }
.footer-logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 8px;
}
.footer-logo em { font-style: normal; color: var(--ochre); }
.footer-tagline { font-size: .83rem; color: var(--text-muted); margin-bottom: 6px; }
.footer-copy { font-size: .76rem; color: var(--border); }

/* ── Responsive ── */
@media (max-width: 640px) {
  nav { padding: 14px 18px; }
  .hero { padding: 56px 16px 64px; }
  .flip-card { animation: none; }
  .form-card { padding: 28px 22px 32px; border-radius: var(--r-md); }
  .how { padding: 64px 20px; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
}