/* ============================================================
   NOLVEN — Онлайн-курс пошива наволочек с застёжкой
   Общие стили
   ============================================================ */

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

:root {
  --bg:          #faf8f5;
  --surface:     #f5f1eb;
  --surface-alt: #ede6dc;
  --text:        #2a1e13;
  --text-muted:  #7a6b5d;
  --accent:      #8b5e4a;
  --accent-dark: #6e4a38;
  --accent-pale: #f0e4db;
  --border:      #ddd4c8;
  --white:       #ffffff;
  --serif:       Georgia, 'Times New Roman', serif;
  --sans:        'Segoe UI', system-ui, -apple-system, sans-serif;
  --radius:      6px;
  --shadow:      0 2px 12px rgba(44,28,10,0.08);
  --shadow-lg:   0 6px 28px rgba(44,28,10,0.12);
  --max-w:       1080px;
  --transition:  0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-dark); }
ul, ol { list-style: none; }

/* ---------- Container ---------- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-align: center;
}
.btn-primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: var(--white);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: var(--white);
}
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-full { width: 100%; }

/* ---------- Section ---------- */
.section { padding: 80px 0; }
.section-alt { background: var(--surface); }
.section-accent { background: var(--accent-pale); }

.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
}
.section-sub {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 600px;
  line-height: 1.7;
}
.section-header { margin-bottom: 48px; }
.section-header.center { text-align: center; }
.section-header.center .section-sub { margin: 0 auto; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,248,245,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}
.logo span { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}
.nav-links a:hover { color: var(--accent); }
.nav-cta { margin-left: 8px; }
.burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  flex-direction: column;
  gap: 5px;
}
.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--transition);
}
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 16px 24px 24px;
  gap: 16px;
}
.mobile-nav a {
  font-size: 16px;
  color: var(--text);
  font-weight: 500;
}
.mobile-nav.open { display: flex; }

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 60px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--serif);
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.18;
  color: var(--text);
  margin-bottom: 24px;
}
.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 36px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 48px;
}
.hero-details {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-detail {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.hero-detail strong {
  font-size: 20px;
  font-family: var(--serif);
  color: var(--text);
}
.hero-detail span {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.hero-image-wrap {
  position: relative;
}
.hero-image-wrap img {
  width: 100%;
  border-radius: 12px;
  object-fit: cover;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-lg);
}
.hero-badge {
  position: absolute;
  bottom: -16px;
  left: -16px;
  background: var(--white);
  border-radius: 8px;
  padding: 14px 18px;
  box-shadow: var(--shadow);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  max-width: 180px;
  line-height: 1.4;
}
.hero-badge small {
  display: block;
  font-weight: 400;
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 2px;
}

/* ---------- For Whom ---------- */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.audience-card {
  background: var(--white);
  border-radius: 10px;
  padding: 28px 24px;
  border: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.audience-card:hover { box-shadow: var(--shadow); }
.audience-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-pale);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 20px;
}
.audience-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  font-family: var(--serif);
}
.audience-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---------- What You Learn ---------- */
.learn-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}
.learn-image-col {
  position: relative;
  border-radius: 12px 0 0 12px;
  overflow: hidden;
}
.learn-image-col img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.learn-content-col {
  background: var(--white);
  border-radius: 0 12px 12px 0;
  padding: 56px 48px;
  border: 1px solid var(--border);
  border-left: none;
}
.learn-list { margin-top: 16px; }
.learn-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.learn-item:last-child { border-bottom: none; }
.learn-num {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}
.learn-item p {
  font-size: 15px;
  color: var(--text);
  line-height: 1.6;
}
.learn-item strong { display: block; margin-bottom: 2px; }

/* ---------- Course Format ---------- */
.format-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.format-step {
  padding: 36px 28px;
  border-right: 1px solid var(--border);
  position: relative;
}
.format-step:last-child { border-right: none; }
.step-num {
  font-family: var(--serif);
  font-size: 36px;
  color: var(--accent-pale);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 16px;
}
.format-step h3 {
  font-family: var(--serif);
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--text);
}
.format-step p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---------- Materials ---------- */
.materials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.materials-image img {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow);
}
.materials-list { margin-top: 8px; }
.material-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  color: var(--text);
  line-height: 1.5;
}
.material-item:last-child { border-bottom: none; }
.material-check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-pale);
  border: 1.5px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}
.material-check::after {
  content: '';
  width: 6px;
  height: 4px;
  border-left: 1.5px solid var(--accent);
  border-bottom: 1.5px solid var(--accent);
  transform: rotate(-45deg) translateY(-1px);
}

/* ---------- Results ---------- */
.results-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.results-image img {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow);
}
.results-list { margin-top: 16px; }
.result-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.result-item:last-child { border-bottom: none; }
.result-icon {
  flex-shrink: 0;
  color: var(--accent);
  font-size: 18px;
  margin-top: 2px;
}
.result-item p { font-size: 15px; color: var(--text); line-height: 1.6; }

/* ---------- Author ---------- */
.author-wrap {
  display: flex;
  gap: 64px;
  align-items: center;
}
.author-content { flex: 1; }
.author-name {
  font-family: var(--serif);
  font-size: 26px;
  margin-bottom: 6px;
}
.author-title {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.author-bio {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.75;
}
.author-visual {
  flex-shrink: 0;
  width: 320px;
  background: var(--surface-alt);
  border-radius: 12px;
  padding: 36px;
  border: 1px solid var(--border);
}
.author-quote {
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.55;
  color: var(--text);
  font-style: italic;
  position: relative;
  padding-left: 20px;
  border-left: 3px solid var(--accent);
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 22px 0;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-muted);
  transition: all var(--transition);
  font-style: normal;
}
.faq-item.open .faq-icon {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
  transform: rotate(45deg);
}
.faq-answer {
  display: none;
  padding-bottom: 22px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* ---------- Lead Form ---------- */
.form-section { background: var(--surface); }
.form-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.form-intro .section-sub { margin-top: 12px; }
.form-perks {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.form-perk {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14px;
  color: var(--text-muted);
}
.perk-dot {
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 8px;
}
.lead-form {
  background: var(--white);
  border-radius: 12px;
  padding: 40px 36px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.lead-form h3 {
  font-family: var(--serif);
  font-size: 22px;
  margin-bottom: 8px;
}
.lead-form .form-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-family: var(--sans);
  font-size: 15px;
  color: var(--text);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  background: var(--white);
}
.form-group input.error { border-color: #c0392b; }
.form-group textarea { resize: vertical; min-height: 90px; }
.error-msg {
  display: none;
  font-size: 12px;
  color: #c0392b;
  margin-top: 4px;
}
.form-group.has-error .error-msg { display: block; }
.form-legal {
  font-size: 12px;
  color: var(--text-muted);
  margin: 16px 0;
  line-height: 1.6;
}
.form-legal a { color: var(--accent); text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer {
  background: #221712;
  color: rgba(255,255,255,0.6);
  padding: 48px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .logo {
  color: rgba(255,255,255,0.9);
  margin-bottom: 12px;
  display: block;
}
.footer-brand p {
  font-size: 13px;
  line-height: 1.6;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 14px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 8px;
  transition: color var(--transition);
}
.footer-col a:hover { color: rgba(255,255,255,0.9); }
.footer-col address {
  font-style: normal;
  font-size: 13px;
  line-height: 1.8;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
}
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a {
  color: rgba(255,255,255,0.4);
  font-size: 12px;
}
.footer-bottom-links a:hover { color: rgba(255,255,255,0.7); }

/* ---------- Cookie Banner ---------- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #2a1e13;
  color: rgba(255,255,255,0.85);
  padding: 18px 24px;
  z-index: 999;
  transform: translateY(100%);
  transition: transform 0.4s ease;
}
.cookie-banner.visible { transform: translateY(0); }
.cookie-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cookie-text {
  flex: 1;
  font-size: 14px;
  line-height: 1.6;
  min-width: 200px;
}
.cookie-text a {
  color: var(--accent-pale);
  text-decoration: underline;
}
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.cookie-accept {
  background: var(--accent);
  color: var(--white);
  border: none;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}
.cookie-accept:hover { background: var(--accent-dark); }
.cookie-decline {
  background: none;
  color: rgba(255,255,255,0.5);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
}
.cookie-decline:hover { color: rgba(255,255,255,0.85); border-color: rgba(255,255,255,0.5); }

/* ---------- Legal Pages ---------- */
.legal-hero {
  background: var(--surface);
  padding: 60px 0;
  border-bottom: 1px solid var(--border);
}
.legal-hero h1 {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 42px);
  color: var(--text);
  margin-bottom: 8px;
}
.legal-hero p {
  font-size: 14px;
  color: var(--text-muted);
}
.legal-body {
  padding: 60px 0 80px;
  max-width: 760px;
  margin: 0 auto;
}
.legal-body h2 {
  font-family: var(--serif);
  font-size: 20px;
  margin-top: 40px;
  margin-bottom: 12px;
  color: var(--text);
}
.legal-body h2:first-child { margin-top: 0; }
.legal-body p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 14px;
}
.legal-body ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 14px;
}
.legal-body li {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 6px;
}
.legal-body strong { color: var(--text); }
.legal-back {
  margin-bottom: 32px;
}
.legal-back a {
  font-size: 14px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.legal-back a:hover { color: var(--accent); }

/* ---------- Success Page ---------- */
.success-page {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px;
}
.success-inner {
  max-width: 520px;
}
.success-icon {
  width: 72px;
  height: 72px;
  background: var(--accent-pale);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 28px;
  font-size: 32px;
}
.success-inner h1 {
  font-family: var(--serif);
  font-size: 34px;
  margin-bottom: 16px;
  color: var(--text);
}
.success-inner p {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
}

/* ---------- Page Banner (legal etc.) ---------- */
.page-nav {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.page-nav .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}
.page-nav a { color: var(--text-muted); }
.page-nav a:hover { color: var(--accent); }
.page-nav span { color: var(--border); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-image-wrap { max-width: 500px; }
  .learn-grid { grid-template-columns: 1fr; }
  .learn-image-col { border-radius: 12px 12px 0 0; max-height: 280px; }
  .learn-content-col { border-radius: 0 0 12px 12px; border-left: 1px solid var(--border); border-top: none; padding: 36px 28px; }
  .materials-grid { grid-template-columns: 1fr; }
  .results-wrap { grid-template-columns: 1fr; }
  .form-wrap { grid-template-columns: 1fr; }
  .author-wrap { flex-direction: column; gap: 32px; }
  .author-visual { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .format-steps { grid-template-columns: 1fr 1fr; }
  .format-step { border-right: none; border-bottom: 1px solid var(--border); }
  .format-step:nth-child(odd) { border-right: 1px solid var(--border); }
  .format-step:last-child { border-bottom: none; border-right: none; }
}

@media (max-width: 640px) {
  .section { padding: 56px 0; }
  .nav-links { display: none; }
  .burger { display: flex; }
  .hero { padding: 48px 0 40px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-details { flex-direction: column; gap: 16px; }
  .hero-badge { display: none; }
  .format-steps { grid-template-columns: 1fr; }
  .format-step { border-right: none; border-bottom: 1px solid var(--border); }
  .format-step:last-child { border-bottom: none; }
  .lead-form { padding: 28px 20px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .audience-grid { grid-template-columns: 1fr; }
  .legal-body { padding: 40px 0 60px; }
}