/* ============================================================
   English School UK — Main Stylesheet
   Design tokens + global styles + component overrides
   ============================================================ */

:root {
  --color-primary:   #1B3A5C;
  --color-bg:        #FAF8F5;
  --color-accent:    #2D7D5A;
  --color-text:      #1A1A1A;
  --color-muted:     #6B7280;
  --color-border:    #E5E1DA;
  --color-surface:   #FFFFFF;
  --color-accent-light: #EAF4EE;
  --color-primary-light: #EBF0F7;

  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --max-prose: 65ch;
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;

  --shadow-card: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.05);
  --shadow-lifted: 0 4px 16px rgba(0,0,0,.12);
}

/* ── Reset / Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Focus ring (accessibility) ──────────────────────────── */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Typography ──────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-primary);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }

p { max-width: var(--max-prose); }

a { color: var(--color-accent); text-decoration: underline; }
a:hover { color: var(--color-primary); }

/* ── Layout helpers ──────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: 1rem;
}

@media (min-width: 640px) { .container { padding-inline: 1.5rem; } }
@media (min-width: 1024px) { .container { padding-inline: 2rem; } }

section { padding-block: 4rem; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-family: var(--font-sans);
  font-size: .9375rem;
  font-weight: 500;
  line-height: 1;
  padding: .75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .18s, color .18s, border-color .18s, box-shadow .18s;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: #256849;
  border-color: #256849;
  color: #fff;
  box-shadow: var(--shadow-lifted);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent);
  border-color: transparent;
  padding-inline: .75rem;
}
.btn-ghost:hover { background: var(--color-accent-light); }

.btn-lg { padding: 1rem 2rem; font-size: 1.0625rem; }
.btn-sm { padding: .5rem 1rem; font-size: .875rem; }

/* ── Nav ─────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 3.5rem;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -.01em;
}
.nav-logo span { color: var(--color-accent); }

.nav-links {
  display: none;
  list-style: none;
  gap: 1.75rem;
  align-items: center;
}
@media (min-width: 768px) { .nav-links { display: flex; } }

.nav-links a {
  font-size: .9375rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  padding-block: .25rem;
  border-bottom: 2px solid transparent;
  transition: color .15s, border-color .15s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Lang switcher */
.lang-switcher {
  display: flex;
  gap: .25rem;
  align-items: center;
}

.lang-btn {
  font-size: .8125rem;
  font-weight: 600;
  padding: .25rem .5rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition: all .15s;
  text-decoration: none;
}
.lang-btn:hover,
.lang-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* Mobile menu */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .5rem;
}
@media (min-width: 768px) { .nav-toggle { display: none; } }

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform .2s, opacity .2s;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 1rem 0 1.5rem;
  border-top: 1px solid var(--color-border);
  gap: .25rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  padding: .6rem 1rem;
  border-radius: var(--radius-sm);
}
.mobile-menu a:hover { background: var(--color-accent-light); color: var(--color-accent); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  background: var(--color-primary);
  color: #fff;
  padding-block: 5rem 4rem;
}

.hero h1 { color: #fff; }
.hero p { color: rgba(255,255,255,.82); }

/* Quiz-картка всередині hero — власні кольори, не успадковує білий текст */
.hero .quiz-card { color: var(--color-text); }
.hero .quiz-card p { color: var(--color-text); }
.hero .quiz-card .quiz-label { color: var(--color-muted); }
.hero .quiz-card .quiz-q { color: var(--color-primary); }
.hero p.hero-eyebrow { color: #fff; }

.hero-eyebrow {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: #fff;
  background: #22C55E;
  padding: .25rem .75rem;
  border-radius: 100px;
  margin-bottom: 1.25rem;
}

/* Quiz card inside hero */
.quiz-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 2rem;
  color: var(--color-text);
  box-shadow: var(--shadow-lifted);
  max-width: 540px;
}

.quiz-card .quiz-label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: .75rem;
  text-transform: none;
  letter-spacing: 0;
}

.quiz-card .quiz-q {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1.25rem;
  line-height: 1.4;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .75rem 1rem;
  margin-bottom: .5rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color .15s, background .15s;
  text-decoration: none;
  width: 100%;
  text-align: left;
  font-family: inherit;
}
.quiz-option:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  color: var(--color-text);
}
.quiz-option .opt-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.75rem;
  height: 1.75rem;
  border-radius: 4px;
  background: var(--color-primary-light);
  font-weight: 700;
  font-size: .8125rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ── Level badge / pill ──────────────────────────────────── */
.level-badge {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 700;
  padding: .2rem .65rem;
  border-radius: 100px;
  letter-spacing: .02em;
}
.level-a1 { background: #FEF3C7; color: #92400E; }
.level-a2 { background: #FDE68A; color: #78350F; }
.level-b1 { background: #D1FAE5; color: #065F46; }
.level-b2 { background: #A7F3D0; color: #064E3B; }
.level-c1 { background: #BAE6FD; color: #0C4A6E; }

/* ── Progress bars ───────────────────────────────────────── */
.progress-wrap { display: flex; flex-direction: column; gap: .5rem; }
.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: .875rem;
  font-weight: 500;
}
.progress-track {
  height: 8px;
  background: var(--color-border);
  border-radius: 100px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 100px;
  transition: width .6s ease;
}

/* ── Before / After cards ────────────────────────────────── */
.before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.ba-before { background: #FEF9EE; border-right: 1px solid var(--color-border); }
.ba-after  { background: var(--color-accent-light); }

.ba-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .06em;
  padding: .5rem 1rem;
  border-bottom: 1px solid var(--color-border);
}
.ba-before .ba-label { color: var(--color-muted); background: #FFF3CD22; }
.ba-after  .ba-label { color: var(--color-accent); }

.ba-body { padding: 1rem; font-size: .9375rem; line-height: 1.5; }

/* ── Step list (How it works) ────────────────────────────── */
.steps { display: flex; flex-direction: column; gap: 1.5rem; }

@media (min-width: 640px) {
  .steps { flex-direction: row; flex-wrap: wrap; }
  .step  { flex: 1 1 180px; }
}

.step { display: flex; flex-direction: column; gap: .5rem; }
.step-num {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9375rem;
  flex-shrink: 0;
}
.step-title { font-weight: 600; font-size: 1rem; color: var(--color-primary); }
.step-desc  { font-size: .875rem; color: var(--color-muted); }

/* ── Teacher card ────────────────────────────────────────── */
.teacher-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.teacher-avatar {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-weight: 700;
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.teacher-name { font-weight: 600; font-size: 1.0625rem; color: var(--color-primary); }
.teacher-qual { font-size: .875rem; font-weight: 500; color: var(--color-accent); }
.teacher-bio  { font-size: .9375rem; color: var(--color-muted); }

.teacher-tags { display: flex; flex-wrap: wrap; gap: .375rem; }
.teacher-tag {
  font-size: .8125rem;
  font-weight: 500;
  padding: .2rem .65rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 100px;
}

/* ── Story / result card ─────────────────────────────────── */
.story-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
}

.story-level-change {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-weight: 700;
  font-size: 1.0625rem;
  color: var(--color-primary);
  margin-bottom: .5rem;
}
.story-level-sep { color: var(--color-accent); font-size: 1.25rem; }

.story-quote {
  font-size: .9375rem;
  font-style: italic;
  color: var(--color-text);
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
  margin-block: .75rem;
  line-height: 1.6;
}

.story-name { font-size: .875rem; font-weight: 600; color: var(--color-muted); }

/* ── Pricing ──────────────────────────────────────────────── */
.pricing-grid {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 768px) { .pricing-grid { grid-template-columns: repeat(3, 1fr); } }

.pricing-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lifted);
}
.pricing-featured-label {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  padding: .2rem .875rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.pricing-name { font-size: 1.0625rem; font-weight: 600; color: var(--color-primary); }
.pricing-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}
.pricing-price small { font-size: 1rem; font-weight: 400; color: var(--color-muted); }

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  flex: 1;
}
.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: .5rem;
  font-size: .9375rem;
  color: var(--color-text);
}
.pricing-features li::before {
  content: '';
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-accent-light);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%232D7D5A'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 00-1.414 0L8 12.586 4.707 9.293a1 1 0 00-1.414 1.414l4 4a1 1 0 001.414 0l8-8a1 1 0 000-1.414z'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
  flex-shrink: 0;
  margin-top: .15rem;
}

/* ── FAQ accordion ──────────────────────────────────────── */
.faq-item {
  border-bottom: 1px solid var(--color-border);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background: none;
  border: none;
  padding: 1.25rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  text-align: left;
  gap: 1rem;
}
.faq-question .faq-icon {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform .2s, background .2s;
  font-size: 1rem;
  color: var(--color-primary);
}
.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
  background: var(--color-accent-light);
  color: var(--color-accent);
}
.faq-answer {
  display: none;
  padding-bottom: 1.25rem;
  font-size: .9375rem;
  color: var(--color-muted);
  line-height: 1.7;
}
.faq-answer p { max-width: none; }
.faq-item.open .faq-answer { display: block; }

/* ── Stat counters ───────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
@media (min-width: 640px) { .stat-grid { grid-template-columns: repeat(4, 1fr); } }

.stat-item { text-align: center; }
.stat-num {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
}
.stat-label { font-size: .875rem; color: var(--color-muted); margin-top: .25rem; }

/* ── Form ────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: .375rem; }
.form-label { font-size: .875rem; font-weight: 600; color: var(--color-primary); }
.form-input, .form-textarea, .form-select {
  font-family: var(--font-sans);
  font-size: .9375rem;
  padding: .75rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color .15s;
  width: 100%;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(45,125,90,.15);
}
.form-textarea { resize: vertical; min-height: 120px; }

/* ── Section dividers ────────────────────────────────────── */
.section-label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: .05em;
  margin-bottom: .5rem;
}

.section-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.section-lead {
  font-size: 1.0625rem;
  color: var(--color-muted);
  max-width: 55ch;
}

/* ── Grid helpers ────────────────────────────────────────── */
.grid-2 {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 640px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }

.grid-3 {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 640px)  { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
  background: var(--color-primary);
  color: rgba(255,255,255,.7);
  padding-block: 3rem 2rem;
  margin-top: 4rem;
}

.footer-inner {
  display: grid;
  gap: 2rem;
}
@media (min-width: 768px) { .footer-inner { grid-template-columns: 2fr 1fr 1fr 1fr; } }

.footer-brand {
  font-weight: 700;
  font-size: 1.125rem;
  color: #fff;
  margin-bottom: .5rem;
}
.footer-tagline { font-size: .875rem; }

.footer-col-title {
  font-size: .8125rem;
  font-weight: 700;
  color: rgba(255,255,255,.4);
  letter-spacing: .08em;
  margin-bottom: .75rem;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.footer-links a {
  font-size: .9375rem;
  color: rgba(255,255,255,.7);
  text-decoration: none;
}
.footer-links a:hover { color: #fff; }

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255,255,255,.12);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: .8125rem;
}

/* ── Alert / Notice ──────────────────────────────────────── */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  border-left: 4px solid;
  font-size: .9375rem;
}
.alert-success {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
  color: #065F46;
}
.alert-info {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ── Utility ─────────────────────────────────────────────── */
.text-muted   { color: var(--color-muted); }
.text-accent  { color: var(--color-accent); }
.text-center  { text-align: center; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.hidden { display: none; }