/* ---------- Tokens ---------- */
:root {
  --paper: #FAF6EC;
  --paper-line: #E4D9BE;
  --ink: #23324D;
  --ink-soft: #52607A;
  --gold: #E8A33D;
  --gold-dark: #C4831F;
  --red: #B23A2E;
  --green: #3B6E5E;
  --teal: #2E6E77;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius: 4px;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.4em;
}

h1 { font-size: clamp(2.2rem, 4.2vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1em; color: var(--ink-soft); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

:focus-visible {
  outline: 3px solid var(--gold-dark);
  outline-offset: 2px;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--paper-line);
  position: sticky;
  top: 0;
  background: rgba(250, 246, 236, 0.92);
  backdrop-filter: blur(6px);
  z-index: 20;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-mark {
  color: var(--red);
  font-size: 1.3rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.main-nav a:hover { color: var(--ink); }

.nav-cta {
  background: var(--ink);
  color: var(--paper) !important;
  padding: 8px 16px;
  border-radius: var(--radius);
}

.nav-cta:hover { background: var(--gold-dark); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--ink);
  display: block;
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 72px 24px 88px;
}

.kicker {
  font-family: var(--font-body);
  color: var(--red);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.8em;
}

.hero-sub {
  font-size: 1.1rem;
  max-width: 46ch;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin: 28px 0 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--ink);
  color: var(--paper);
}

.btn-primary:hover { background: var(--gold-dark); }

.btn-ghost {
  border-color: var(--ink);
  color: var(--ink);
}

.btn-ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

.hero-note {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.hero-panel {
  display: flex;
  justify-content: center;
}

.notebook {
  background: #fff;
  border: 1px solid var(--paper-line);
  border-radius: 6px;
  padding: 28px 26px;
  width: 100%;
  max-width: 360px;
  box-shadow: 6px 6px 0 var(--paper-line);
  transform: rotate(-1.5deg);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 30px,
    var(--paper-line) 31px
  );
}

.notebook-label {
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 20px;
}

.notebook-line {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin-bottom: 20px;
}

.notebook-answer strong {
  color: var(--red);
  font-family: var(--font-display);
}

.notebook-tag {
  font-size: 0.82rem;
  color: var(--ink-soft);
  font-style: italic;
  margin: 0;
}

/* ---------- Subjects ---------- */
.subjects {
  padding: 80px 0;
  border-top: 1px solid var(--paper-line);
}

.section-sub {
  max-width: 56ch;
  font-size: 1.05rem;
}

.tab-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-top: 36px;
}

.tab {
  background: #fff;
  border-top: 5px solid var(--ink);
  padding: 22px 20px;
  border-radius: 0 0 6px 6px;
}

.tab h3 { margin-bottom: 0.5em; }
.tab p { font-size: 0.92rem; margin: 0; }

.tab-math { border-top-color: var(--ink); }
.tab-science { border-top-color: var(--green); }
.tab-english { border-top-color: var(--red); }
.tab-history { border-top-color: var(--gold-dark); }
.tab-coding { border-top-color: var(--teal); }

.tab:nth-child(odd) { transform: translateY(-6px); }

/* ---------- How it works ---------- */
.how {
  padding: 80px 0;
  background: #fff;
  border-top: 1px solid var(--paper-line);
  border-bottom: 1px solid var(--paper-line);
}

.how-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.steps li {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
}

.steps h3 { margin-bottom: 0.3em; }
.steps p { margin: 0; font-size: 0.96rem; }

/* ---------- Stories ---------- */
.stories {
  padding: 80px 0;
}

.quote-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
  margin-top: 36px;
}

blockquote {
  margin: 0;
  padding: 24px 24px 20px;
  background: #fff;
  border-left: 3px solid var(--gold-dark);
  border-radius: 0 6px 6px 0;
}

blockquote p {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--ink);
  margin-bottom: 0.6em;
}

blockquote cite {
  font-style: normal;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

/* ---------- Quote request ---------- */
.quote {
  padding: 80px 0 96px;
  background: var(--ink);
  color: var(--paper);
}

.quote-inner { text-align: left; }

.quote h2 { color: var(--paper); }
.quote .section-sub { color: #C7CFDD; max-width: 60ch; }

.quote-form {
  margin-top: 32px;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row-split {
  flex-direction: row;
  gap: 16px;
}

.form-row-split > div {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.quote-form label,
.fieldset-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: #DCE2EC;
}

.quote-form input[type="text"],
.quote-form input[type="email"],
.quote-form select,
.quote-form textarea {
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 2px solid transparent;
  font-family: var(--font-body);
  font-size: 0.98rem;
  background: #fff;
  color: var(--ink);
}

.quote-form textarea {
  resize: vertical;
  min-height: 90px;
}

.quote-form input:focus-visible,
.quote-form select:focus-visible,
.quote-form textarea:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 1px;
}

.contact-choice {
  display: flex;
  gap: 12px;
}

.radio-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #2E3E5C;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 500;
  cursor: pointer;
  font-size: 0.92rem;
}

.radio-pill input {
  accent-color: var(--gold);
}

.quote-form .btn-primary {
  background: var(--gold);
  color: var(--ink);
  align-self: flex-start;
  margin-top: 6px;
}

.quote-form .btn-primary:hover {
  background: var(--gold-dark);
  color: var(--paper);
}

.quote-response {
  margin-top: 18px;
  font-size: 0.95rem;
  color: var(--gold);
  min-height: 1.4em;
  max-width: 560px;
}

@media (max-width: 520px) {
  .form-row-split {
    flex-direction: column;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  padding: 32px 0;
  border-top: 1px solid var(--paper-line);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.footer-links a {
  text-decoration: none;
  margin-left: 18px;
  color: var(--ink-soft);
}

.footer-links a:hover { color: var(--ink); }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .hero, .how-grid {
    grid-template-columns: 1fr;
  }
  .hero-panel { order: -1; }
  .notebook { transform: rotate(0); }
  .tab:nth-child(odd) { transform: none; }
}

@media (max-width: 700px) {
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--paper-line);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
}

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