/* ============================================================================
   Алина Писаренко — English tutor. Статический сайт-визитка.
   Токены и компоненты взяты из дизайн-системы "Organic" (ds-styles.css),
   плюс адаптивная вёрстка страницы.
   ========================================================================= */

/* — токены — */
:root {
  --color-bg: #f5ead8;
  --color-surface: #ebddc5;
  --color-text: #201e1d;
  --color-accent: #c67139;
  --color-accent-2: #7a8a5e;
  --color-divider: color-mix(in srgb, #201e1d 16%, transparent);

  --color-neutral-100: #f9f4ed;
  --color-neutral-200: #eee7db;
  --color-neutral-300: #dcd3c4;
  --color-neutral-400: #c0b6a5;
  --color-neutral-500: #a19786;
  --color-neutral-600: #82796a;
  --color-neutral-700: #645c50;
  --color-neutral-800: #474238;
  --color-neutral-900: #2e2b25;

  --color-accent-100: #fff2eb;
  --color-accent-200: #ffe1d0;
  --color-accent-300: #ffc6a5;
  --color-accent-400: #f6a06b;
  --color-accent-500: #d67f48;
  --color-accent-600: #b2622d;
  --color-accent-700: #8c491a;
  --color-accent-800: #643312;
  --color-accent-900: #402310;

  --color-accent-2-100: #f0fae1;
  --color-accent-2-200: #e1eecc;
  --color-accent-2-300: #ccdbb2;
  --color-accent-2-400: #aebf92;
  --color-accent-2-500: #8fa073;
  --color-accent-2-600: #728157;
  --color-accent-2-700: #56633f;
  --color-accent-2-800: #3d472b;
  --color-accent-2-900: #272e1b;

  --font-heading: "Caprasimo", Georgia, serif;
  --font-heading-weight: 400;
  --font-body: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;

  --space-1: 4.4px;
  --space-2: 8.8px;
  --space-3: 13.2px;
  --space-4: 17.6px;
  --space-6: 26.4px;
  --space-8: 35.2px;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;

  --shadow-sm: 0 1px 2px color-mix(in srgb, #2e2b25 14%, transparent);
  --shadow-md: 0 3px 10px color-mix(in srgb, #2e2b25 16%, transparent);
  --shadow-lg: 0 12px 32px color-mix(in srgb, #2e2b25 22%, transparent);

  /* горизонтальные поля страницы */
  --pad-x: 6vw;
}

/* — база — */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 var(--space-2);
}

p { margin: 0 0 var(--space-3); }
img { display: block; max-width: 100%; }

a { color: var(--color-accent-700); text-decoration: none; text-underline-offset: 3px; }
a:hover { color: var(--color-accent-800); }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 4px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.washed { filter: saturate(0.6) contrast(0.85) brightness(1.1) opacity(0.94); }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* — кнопки — */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: 999px;
  transition: background-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.btn-primary { background: var(--color-accent); color: var(--color-bg); }
.btn-primary:hover { background: var(--color-accent-600); color: var(--color-bg); }
.btn-primary:active { background: var(--color-accent-700); transform: translateY(1px); }
.btn-secondary { border-color: var(--color-divider); color: var(--color-text); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 7%, transparent); color: var(--color-text); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 14%, transparent); transform: translateY(1px); }
.btn-lg { font-size: 16px; padding: 14px 28px; }
.btn-xl { font-size: 16px; padding: 16px 30px; }
.btn-block { width: 100%; margin-top: auto; }

/* — карточки — */
.card {
  display: flex; flex-direction: column; gap: var(--space-2);
  padding: var(--space-3);
  border-radius: calc(var(--radius-lg) * 1.15);
  background: var(--color-surface);
}
.card-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 17px; line-height: 1.2; }
.card-body { margin: 0; font-size: 13px; opacity: 0.8; flex: 1; }
.card-meta { display: flex; align-items: center; gap: 6px; font-size: 11px; color: color-mix(in srgb, var(--color-text) 50%, transparent); }
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-md { box-shadow: var(--shadow-md); }
.elev-lg { box-shadow: var(--shadow-lg); }

/* — теги — */
.tag {
  display: inline-flex; align-items: center; font-size: 11px;
  letter-spacing: 0.02em; padding: 3px 10px; border-radius: 999px;
}
.tag-accent { background: var(--color-accent-100); color: var(--color-accent-800); }
.tag-accent-2 { background: var(--color-accent-2-100); color: var(--color-accent-2-800); }

/* ============================================================================
   Шапка
   ========================================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: box-shadow 0.2s ease;
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }

.nav {
  display: flex; align-items: center; gap: var(--space-4);
  padding: 20px var(--pad-x);
  max-width: 1360px; margin: 0 auto;
}
.nav-brand {
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 18px; margin-right: auto; color: var(--color-text);
}
.nav-brand:hover { color: var(--color-text); }

.nav-menu { display: flex; gap: 22px; align-items: center; }
.nav-menu a { color: inherit; font-size: 14px; }
.nav-menu a:hover,
.nav-menu a[aria-current="true"] { color: var(--color-accent-700); }

.lang-switch {
  display: flex; gap: 4px; background: var(--color-surface);
  border-radius: 999px; padding: 3px;
}
.lang-switch button {
  border: none; cursor: pointer; font-family: var(--font-body);
  font-size: 12.5px; font-weight: 700; padding: 6px 12px;
  border-radius: 999px; background: transparent; color: var(--color-text);
  transition: background-color 0.15s ease, color 0.15s ease;
}
.lang-switch button:hover { background: color-mix(in srgb, var(--color-text) 8%, transparent); }
.lang-switch button[aria-pressed="true"] { background: var(--color-accent); color: var(--color-bg); }

.nav-toggle {
  display: none; width: 42px; height: 42px; padding: 0;
  border: 1px solid var(--color-divider); border-radius: 999px;
  background: transparent; cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle span {
  display: block; position: relative; width: 18px; height: 2px;
  background: var(--color-text); border-radius: 2px;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ''; position: absolute; left: 0; width: 18px; height: 2px;
  background: var(--color-text); border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

/* ============================================================================
   Секции
   ========================================================================= */
.section { padding: 110px var(--pad-x); max-width: 1300px; margin: 0 auto; }
.section-head { max-width: 600px; margin: 0 0 56px; }
.section-head h2 { font-size: clamp(26px, 3.2vw, 40px); margin: 0; }
.section-head .tag { margin-bottom: 14px; }

/* — герой — */
.hero {
  position: relative;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center;
  padding: 80px var(--pad-x) 100px; max-width: 1360px; margin: 0 auto;
}
.hero-blob {
  position: absolute; top: 40px; right: 6%; width: 110px; height: 110px;
  border-radius: 50%; background: var(--color-accent-2-200); opacity: 0.7;
  animation: floatSlow 9s ease-in-out infinite; z-index: 0;
}
@keyframes floatSlow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-16px) rotate(3deg); }
}
.hero-text, .hero-media { position: relative; z-index: 1; }
.hero-text h1 { font-size: clamp(34px, 4.6vw, 58px); line-height: 1.1; margin: 0 0 22px; }
.hero-text h1 .accent { color: var(--color-accent-700); }
.hero-badge { margin-bottom: 24px; font-size: 12px; }
.hero-bio {
  font-size: 18px; line-height: 1.6;
  color: color-mix(in srgb, var(--color-text) 75%, transparent);
  max-width: 500px; margin: 0 0 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-photo {
  position: relative; aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg); overflow: hidden;
  background: var(--color-neutral-200);
}
.hero-photo img { width: 100%; height: 100%; object-fit: cover; }
.hero-note {
  position: absolute; bottom: -20px; left: -20px;
  flex-direction: row; align-items: center; gap: 14px;
  padding: 16px 20px; width: auto;
}
.hero-note-value { font-family: var(--font-heading); font-size: 30px; color: var(--color-accent-700); }
.hero-note-label { font-size: 12.5px; line-height: 1.3; max-width: 120px; opacity: 0.75; }

/* — статистика — */
.stats {
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.stats-inner {
  max-width: 1200px; margin: 0 auto; padding: 32px var(--pad-x);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.stat-value { font-family: var(--font-heading); font-size: 32px; }
.stat-label { font-size: 13px; opacity: 0.65; margin-top: 2px; }

/* — услуги — */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.service-card { padding: 28px; }
.service-icon {
  width: 48px; height: 48px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 6px;
}
.service-card .card-body { font-size: 13.5px; }

/* — методика — */
.method { background: var(--color-accent-800); color: var(--color-bg); padding: 110px var(--pad-x); }
.method-inner {
  max-width: 1300px; margin: 0 auto;
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center;
}
.method h2 { font-size: clamp(26px, 3.2vw, 38px); margin: 0 0 18px; }
.method-lead { font-size: 16.5px; line-height: 1.65; opacity: 0.88; max-width: 440px; }
.method .tag { background: color-mix(in srgb, var(--color-bg) 18%, transparent); color: var(--color-bg); margin-bottom: 16px; }
.method-step {
  display: flex; gap: 22px; padding: 22px 0;
  border-bottom: 1px solid color-mix(in srgb, var(--color-bg) 20%, transparent);
}
.method-step-num { font-family: var(--font-heading); font-size: 26px; opacity: 0.6; min-width: 40px; }
.method-step-title { font-size: 17px; font-weight: 700; margin-bottom: 5px; }
.method-step-desc { font-size: 14.5px; line-height: 1.55; opacity: 0.85; }

/* — цены — */
.prices { max-width: 1200px; }
.prices-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 20px; }
.price-card { position: relative; padding: 36px 28px; }
.price-badge { position: absolute; top: -12px; left: 26px; }
.price-card .card-title { font-size: 19px; }
.price-row { display: flex; align-items: baseline; gap: 6px; margin: 10px 0 18px; }
.price-value { font-family: var(--font-heading); font-size: 36px; }
.price-unit { font-size: 14px; opacity: 0.6; }
.price-features { display: flex; flex-direction: column; gap: 9px; margin: 0 0 22px; padding: 0; list-style: none; }
.price-features li { display: flex; gap: 9px; font-size: 14px; opacity: 0.85; }
.price-features li::before { content: '✓'; color: var(--color-accent-700); }

/* — отзывы — */
.reviews { background: var(--color-surface); padding: 110px var(--pad-x); }
.reviews-inner { max-width: 1300px; margin: 0 auto; }
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.review-card { padding: 28px; background: var(--color-bg); }
.review-text { font-size: 14.5px; line-height: 1.6; opacity: 0.9; margin: 0 0 20px; }
.review-author { display: flex; align-items: center; gap: 12px; margin-top: auto; }
.review-avatar {
  width: 42px; height: 42px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-size: 17px;
  background: var(--color-accent-200); color: var(--color-accent-800);
}
.review-name { font-weight: 700; font-size: 14px; }

/* — контакты — */
.contact { max-width: 1000px; }
.contact h2 { font-size: clamp(28px, 3.6vw, 44px); margin: 0 0 18px; }
.contact-lead { font-size: 17px; opacity: 0.75; max-width: 480px; margin: 0 0 36px; }
.contact-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }
.contact-links { display: flex; gap: 24px; flex-wrap: wrap; font-size: 14px; }

/* — подвал — */
.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: 28px var(--pad-x); font-size: 13px; opacity: 0.6;
}

/* ============================================================================
   Адаптив
   ========================================================================= */
@media (max-width: 1080px) {
  .nav-menu { gap: 16px; }
  .nav-menu a { font-size: 13.5px; }
}

@media (max-width: 900px) {
  :root { --pad-x: 5vw; }

  .nav-toggle { display: inline-flex; }
  .nav-menu {
    position: absolute; top: 100%; left: 0; right: 0;
    display: none; flex-direction: column; align-items: stretch; gap: 4px;
    padding: 12px var(--pad-x) 24px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-divider);
    box-shadow: var(--shadow-md);
  }
  .nav-menu.is-open { display: flex; }
  .nav-menu a { padding: 12px 0; font-size: 16px; border-bottom: 1px solid var(--color-divider); }
  .nav-menu .btn { margin-top: 12px; }
  .nav-menu .lang-switch { align-self: flex-start; margin-top: 12px; }

  .hero {
    grid-template-columns: 1fr; gap: 56px;
    padding-top: 48px; padding-bottom: 72px;
  }
  .hero-blob { display: none; }
  .hero-media { max-width: 420px; }
  .hero-photo { aspect-ratio: 1 / 1; }
  .hero-note { left: auto; right: -8px; bottom: -16px; }

  .method-inner { grid-template-columns: 1fr; gap: 32px; }
  .method-lead { max-width: none; }
  .section, .method, .reviews { padding-top: 72px; padding-bottom: 72px; }
  .section-head { margin-bottom: 36px; }
}

@media (max-width: 620px) {
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 24px 16px; padding-top: 28px; padding-bottom: 28px; }
  .stat-value { font-size: 27px; }

  .hero-bio { font-size: 16.5px; }
  .hero-actions .btn, .contact-actions .btn { width: 100%; }
  .hero-media { max-width: none; }
  .hero-note { position: static; margin-top: 16px; width: 100%; }
  .hero-note-label { max-width: none; }

  .services-grid, .prices-grid, .reviews-grid { grid-template-columns: 1fr; }
  .service-card, .review-card { padding: 22px; }
  .price-card { padding: 30px 22px; }
  .contact-links { gap: 14px 22px; }
  .method-step { gap: 14px; }
}

/* — печать и доступность — */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}