/* ==========================================================================
   «Коучинг. Дао карьерного роста» — тушь и печать (ink & seal)
   Token architecture: primitive → semantic → component. No raw hex below
   the primitive layer; all components use var() only.
   ========================================================================== */

/* ---------- Layer 1: Primitive ---------- */
:root {
  /* palette */
  --raw-indigo-950: #10151F;
  --raw-indigo-900: #161E2C;
  --raw-indigo-800: #1E2839;
  --raw-indigo-700: #2A3750;
  --raw-indigo-400: #8B96AB;
  --raw-paper-50:  #FBF8F3;
  --raw-paper-100: #F4EFE6;
  --raw-paper-200: #EAE2D3;
  --raw-white:     #FFFFFF;
  --raw-seal-600:  #C8402C;
  --raw-seal-700:  #A93524;
  --raw-seal-08:   rgba(200, 64, 44, 0.08);
  --raw-ink-900:   #1B2333;
  --raw-ink-600:   #3E4756;
  --raw-ink-400:   #7A8194;

  /* typography */
  --raw-serif: "Playfair Display", Georgia, "Times New Roman", serif;
  --raw-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --raw-scale-11: 0.6875rem;
  --raw-scale-12: 0.75rem;
  --raw-scale-14: 0.875rem;
  --raw-scale-16: 1rem;
  --raw-scale-18: 1.125rem;
  --raw-scale-22: 1.375rem;
  --raw-scale-28: 1.75rem;
  --raw-scale-36: 2.25rem;
  --raw-scale-48: 3rem;
  --raw-scale-64: 4rem;

  /* spacing */
  --raw-sp-1: 0.25rem;
  --raw-sp-2: 0.5rem;
  --raw-sp-3: 0.75rem;
  --raw-sp-4: 1rem;
  --raw-sp-6: 1.5rem;
  --raw-sp-8: 2rem;
  --raw-sp-12: 3rem;
  --raw-sp-16: 4rem;
  --raw-sp-24: 6rem;

  /* radii / shadows */
  --raw-radius-sm: 6px;
  --raw-radius-md: 10px;
  --raw-radius-lg: 16px;
  --raw-shadow-sm: 0 1px 2px rgba(16, 21, 31, 0.06), 0 1px 4px rgba(16, 21, 31, 0.05);
  --raw-shadow-md: 0 4px 14px rgba(16, 21, 31, 0.10);
  --raw-shadow-lg: 0 18px 50px rgba(16, 21, 31, 0.30);
}

/* ---------- Layer 2: Semantic ---------- */
:root {
  --color-bg:            var(--raw-paper-50);
  --color-bg-alt:        var(--raw-paper-100);
  --color-surface:       var(--raw-white);
  --color-ink:           var(--raw-indigo-900);
  --color-ink-deep:      var(--raw-indigo-950);
  --color-ink-surface:   var(--raw-indigo-800);
  --color-accent:        var(--raw-seal-600);
  --color-accent-hover:  var(--raw-seal-700);
  --color-accent-tint:   var(--raw-seal-08);
  --color-fg:            var(--raw-ink-900);
  --color-body:          var(--raw-ink-600);
  --color-muted:         var(--raw-ink-400);
  --color-border:        var(--raw-paper-200);
  --color-on-ink:        var(--raw-paper-50);
  --color-on-ink-muted:  var(--raw-indigo-400);
  --color-on-ink-border: var(--raw-indigo-700);

  --font-display: var(--raw-serif);
  --font-body:    var(--raw-sans);

  --text-xs:    var(--raw-scale-12);
  --text-sm:    var(--raw-scale-14);
  --text-base:  var(--raw-scale-16);
  --text-lg:    var(--raw-scale-18);
  --text-xl:    var(--raw-scale-22);
  --text-2xl:   var(--raw-scale-28);
  --text-3xl:   var(--raw-scale-36);
  --text-hero:  clamp(var(--text-2xl), 4.5vw, var(--raw-scale-48));

  --space-section: var(--raw-sp-24);
  --space-block:   var(--raw-sp-12);
  --space-gap:     var(--raw-sp-6);

  --radius-card:   var(--raw-radius-md);
  --radius-pill:   999px;
  --shadow-card:   var(--raw-shadow-sm);
  --shadow-cover:  var(--raw-shadow-lg);

  --container-max: 72rem;
  --prose-max: 46rem;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-body);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-fg);
  line-height: 1.2;
  margin: 0 0 var(--raw-sp-4);
  font-weight: 700;
}

p { margin: 0 0 var(--raw-sp-4); }
p:last-child { margin-bottom: 0; }

img, video { max-width: 100%; height: auto; display: block; }

a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-gap);
}

.prose { max-width: var(--prose-max); margin-inline: auto; }

section { padding-block: var(--space-section); }
section[id] { scroll-margin-top: 5rem; }

/* Section heading pattern: small seal kicker + serif title */
.section-head { text-align: center; margin-bottom: var(--space-block); }

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--raw-sp-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--raw-sp-3);
}
.section-kicker::before,
.section-kicker::after {
  content: "";
  width: 2rem;
  height: 1px;
  background: var(--color-accent);
  opacity: 0.5;
}

.section-title { font-size: var(--text-3xl); }
.section-intro {
  font-size: var(--text-lg);
  color: var(--color-body);
  max-width: var(--prose-max);
  margin: var(--raw-sp-4) auto 0;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-ink-deep) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-on-ink-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-gap);
  padding-block: var(--raw-sp-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--raw-sp-3);
  color: var(--color-on-ink);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  white-space: nowrap;
}
.brand:hover { color: var(--color-on-ink); }
.brand img { width: 2rem; height: 2rem; }

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--raw-sp-6);
}
.site-nav a {
  color: var(--color-on-ink-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}
.site-nav a:hover { color: var(--color-on-ink); }

@media (max-width: 62rem) {
  .site-nav a[data-nav] { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--raw-sp-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1;
  padding: var(--raw-sp-3) var(--raw-sp-6);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-accent);
  color: var(--raw-white);
}
.btn-primary:hover { background: var(--color-accent-hover); color: var(--raw-white); }

.btn-outline {
  background: transparent;
  border-color: var(--color-on-ink-border);
  color: var(--color-on-ink);
}
.btn-outline:hover { border-color: var(--color-on-ink-muted); color: var(--color-on-ink); }

.btn-ghost {
  background: transparent;
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.btn-ghost:hover { background: var(--color-accent-tint); color: var(--color-accent); }

.btn-sm { padding: var(--raw-sp-2) var(--raw-sp-4); font-size: var(--text-xs); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(60rem 30rem at 85% -10%, var(--raw-indigo-800), transparent 60%),
    var(--color-ink);
  color: var(--color-on-ink);
  padding-block: var(--space-section) calc(var(--space-section) + var(--raw-sp-8));
}

.hero .dao {
  position: absolute;
  right: -3rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--raw-scale-64);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-on-ink-border);
  opacity: 0.35;
  user-select: none;
  pointer-events: none;
}

.hero .container {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  align-items: center;
  gap: var(--space-section);
}

.hero-copy .headline {
  color: var(--color-on-ink);
  font-size: var(--text-hero);
  margin-bottom: var(--raw-sp-4);
}
.hero-copy .headline em {
  font-style: normal;
  color: var(--raw-seal-600);
}
.hero-copy .subheadline {
  color: var(--color-on-ink-muted);
  font-size: var(--text-lg);
  max-width: 34rem;
  margin-bottom: var(--raw-sp-8);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--raw-sp-3);
  margin-bottom: var(--raw-sp-8);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--raw-sp-2) var(--raw-sp-6);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  color: var(--color-on-ink-muted);
}
.trust-row span {
  display: inline-flex;
  align-items: center;
  gap: var(--raw-sp-2);
}
.trust-row span::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 2px;
  background: var(--color-accent);
  transform: rotate(45deg);
}

/* book cover: paper sheet with spine + seal badge */
.cover-stage { position: relative; justify-self: center; }

.cover-book {
  width: min(22rem, 70vw);
  border-radius: 2px 6px 6px 2px;
  box-shadow: var(--shadow-cover);
  transform: rotate(-1.5deg);
}
.cover-book::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 10px;
  border-radius: 2px 0 0 2px;
  background: linear-gradient(90deg, rgba(0,0,0,0.35), rgba(255,255,255,0.12));
}

.cover-seal {
  position: absolute;
  right: -0.75rem;
  bottom: -0.75rem;
  width: 4.5rem;
  height: 4.5rem;
  border-radius: var(--raw-radius-sm);
  background: var(--color-accent);
  color: var(--raw-white);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  box-shadow: var(--shadow-md);
  transform: rotate(3deg);
}

@media (max-width: 56rem) {
  .hero .container { grid-template-columns: 1fr; gap: var(--space-block); }
  .cover-stage { order: -1; }
  .hero .dao { font-size: var(--raw-scale-48); opacity: 0.2; }
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: var(--space-gap);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--raw-sp-8);
}

.card .card-icon {
  display: inline-grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--raw-radius-sm);
  background: var(--color-accent-tint);
  color: var(--color-accent);
  margin-bottom: var(--raw-sp-4);
}
.card .card-icon svg { width: 1.25rem; height: 1.25rem; }

.card h3 { font-size: var(--text-xl); }
.card p { font-size: var(--text-sm); color: var(--color-body); }

/* ---------- Contents (TOC) ---------- */
.contents { background: var(--color-bg-alt); }

.contents .container {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: var(--space-section);
  align-items: start;
}

.contents-figure img {
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
}

.chapter-list { list-style: none; margin: 0; padding: 0; counter-reset: chapter; }

.chapter-list > li {
  counter-increment: chapter;
  padding: var(--raw-sp-4) 0;
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--raw-sp-3);
  align-items: baseline;
}
.chapter-list > li:last-child { border-bottom: 0; }

.chapter-list > li::before {
  content: counter(chapter, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-accent);
}

.chapter-list .chapter-title {
  font-weight: 600;
  color: var(--color-fg);
}
.chapter-list .chapter-note {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-top: var(--raw-sp-1);
}

.stories { margin: var(--raw-sp-3) 0 0; padding: 0; }
.stories h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--raw-sp-2);
}
.stories ul { list-style: none; margin: 0 0 var(--raw-sp-4); padding: 0; }
.stories li {
  font-size: var(--text-sm);
  color: var(--color-body);
  padding: var(--raw-sp-2) 0;
}
.stories li strong { color: var(--color-fg); font-weight: 600; }
.stories li strong::after { content: " —"; color: var(--color-accent); }

@media (max-width: 56rem) {
  .contents .container { grid-template-columns: 1fr; gap: var(--space-block); }
  .contents-figure { max-width: 24rem; }
}

/* ---------- Audience ---------- */
.audience .card { text-align: start; }
.audience .card h3 { font-size: var(--text-lg); }

/* ---------- Author ---------- */
.author {
  background:
    radial-gradient(40rem 20rem at 10% 110%, var(--raw-indigo-800), transparent 60%),
    var(--color-ink);
  color: var(--color-on-ink);
}

.author .container {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: var(--space-section);
  align-items: center;
}

.author .section-title,
.author h3 { color: var(--color-on-ink); }
.author .section-kicker { color: var(--raw-seal-600); }

.author-photo {
  position: relative;
  justify-self: center;
}
.author-photo img.portrait {
  width: min(20rem, 75vw);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-cover);
}
.author-photo img.cert {
  position: absolute;
  right: -1.5rem;
  bottom: -1.5rem;
  width: 8.5rem;
  border-radius: var(--raw-radius-md);
  border: 3px solid var(--color-ink);
  box-shadow: var(--shadow-md);
  transform: rotate(4deg);
}

.author-bio { font-size: var(--text-base); color: var(--color-on-ink-muted); }
.author-bio p { margin-bottom: var(--raw-sp-4); }

.cred-list {
  list-style: none;
  margin: var(--raw-sp-6) 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: var(--raw-sp-3);
}
.cred-list li {
  display: flex;
  align-items: center;
  gap: var(--raw-sp-3);
  font-size: var(--text-sm);
  color: var(--color-on-ink);
  background: var(--color-ink-surface);
  border: 1px solid var(--color-on-ink-border);
  border-radius: var(--radius-pill);
  padding: var(--raw-sp-2) var(--raw-sp-4);
}
.cred-list svg { flex: none; width: 1rem; height: 1rem; color: var(--raw-seal-600); }

.author-actions { display: flex; flex-wrap: wrap; gap: var(--raw-sp-3); margin-top: var(--raw-sp-6); }

.social-row { display: flex; gap: var(--raw-sp-3); margin-top: var(--raw-sp-6); }
.social-row a {
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-on-ink-border);
  color: var(--color-on-ink-muted);
}
.social-row a:hover { color: var(--color-on-ink); border-color: var(--color-on-ink-muted); }
.social-row svg { width: 1.1rem; height: 1.1rem; }

@media (max-width: 56rem) {
  .author .container { grid-template-columns: 1fr; gap: var(--space-block); }
  .author-photo { margin-bottom: var(--raw-sp-8); }
}

/* ---------- Reviews ---------- */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  gap: var(--space-gap);
}

.quote-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--raw-sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--raw-sp-6);
}
.quote-card::before {
  content: "”";
  position: absolute;
  top: var(--raw-sp-4);
  right: var(--raw-sp-6);
  font-family: var(--font-display);
  font-size: var(--raw-scale-48);
  line-height: 1;
  color: var(--color-accent);
  opacity: 0.18;
}
.quote-card blockquote {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-fg);
  line-height: 1.75;
  flex: 1;
}
.quote-source { display: flex; align-items: center; gap: var(--raw-sp-3); }
.quote-source img {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
}
.quote-source .name { font-weight: 600; color: var(--color-fg); font-size: var(--text-sm); }
.quote-source .role { font-size: var(--text-xs); color: var(--color-muted); }

/* videos */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: var(--space-gap);
  max-width: 52rem;
  margin-inline: auto;
}
.video-grid video {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  background: var(--color-ink-deep);
}

/* ---------- Final CTA ---------- */
.final-cta {
  background: var(--color-bg-alt);
  text-align: center;
}
.final-cta .section-title { margin-bottom: var(--raw-sp-3); }
.final-cta .btn { margin-top: var(--raw-sp-6); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink-deep);
  color: var(--color-on-ink-muted);
  border-top: 1px solid var(--color-on-ink-border);
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--raw-sp-4);
  padding-block: var(--raw-sp-8);
  font-size: var(--text-sm);
}
.site-footer a { color: var(--color-on-ink-muted); }
.site-footer a:hover { color: var(--color-on-ink); }