@import url("tokens.css");

/* -------------------------------------------------------------
   0. RESET & BASE
   ------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-main);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

a:hover {
  color: var(--color-primary);
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.1rem, 3.5vw + 1rem, 3.4rem); }
h2 { font-size: clamp(1.6rem, 2.2vw + 0.6rem, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: 1.35rem; margin-bottom: 0.6rem; }

p {
  margin-bottom: 1rem;
  color: var(--color-text-muted);
}

p:last-child {
  margin-bottom: 0;
}

/* -------------------------------------------------------------
   1. LAYOUT & CONTAINERS
   ------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding-block: clamp(3.5rem, 5vw, 5.5rem);
}

.section-subtle {
  background-color: var(--color-surface-subtle);
  border-block: 1px solid var(--color-border);
}

.section-heavy {
  content-visibility: auto;
  contain-intrinsic-size: auto none auto 500px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.75rem, 3vw, 3rem);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* -------------------------------------------------------------
   2. HEADER & NAVIGATION
   ------------------------------------------------------------- */
.top-bar {
  background-color: var(--color-primary-dark);
  color: #a4bebe;
  font-size: 0.8125rem;
  padding-block: 0.45rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.top-bar-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

.top-bar-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-warm-amber);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-height);
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  text-decoration: none;
}

.brand-logo img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: var(--radius-xs);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.brand-accent {
  color: var(--color-accent);
}

.brand-sub {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-warm-amber);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-main);
  padding-block: 0.5rem;
  position: relative;
  white-space: nowrap;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-accent);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: var(--radius-pill);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.nav-burger {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

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

.nav-burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Мобильная навигация */
.mobile-nav {
  display: none;
  position: fixed;
  top: calc(var(--header-height) + 33px);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--header-height) - 33px);
  background-color: var(--color-surface);
  z-index: 99;
  overflow-y: auto;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--color-border);
  transform: translateY(-10px);
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.mobile-nav.open {
  display: block;
  transform: translateY(0);
  opacity: 1;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.mobile-nav-link {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-primary);
  padding-block: 0.4rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

/* -------------------------------------------------------------
   3. BUTTONS & UI CONTROLS
   ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-sage {
  background-color: #E2ECE8;
  color: var(--color-primary);
}

.badge-amber {
  background-color: var(--color-warm-bg);
  color: #B45309;
}

.badge-brand {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* -------------------------------------------------------------
   4. HERO & MODERN EDITORIAL PRESENTATION
   ------------------------------------------------------------- */
.hero-editorial {
  padding-block: clamp(3rem, 5vw, 4.5rem);
  background: linear-gradient(180deg, #F0F5F2 0%, var(--color-bg) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 58ch;
}

/* Metric Strip (Чистая полоса клинических метрик) */
.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 0.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.metric-cell {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
}

.metric-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.hero-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

.hero-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.hero-card-floating {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  right: 1.25rem;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

/* -------------------------------------------------------------
   5. SEGMENTED CONTROL: STAGE TIMELINE
   ------------------------------------------------------------- */
.stage-bar-wrapper {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding-block: 1.25rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.stage-bar {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.stage-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-pill);
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.stage-btn:hover {
  background-color: #E2ECE8;
  border-color: var(--color-accent);
}

.stage-btn.active {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.stage-content-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  margin-top: 1.5rem;
  box-shadow: var(--shadow-sm);
}

/* -------------------------------------------------------------
   6. ANATOMY & CLINICAL CARDS
   ------------------------------------------------------------- */
.anatomy-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.anatomy-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.anatomy-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.anatomy-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-warm-amber);
  font-weight: 700;
}

.anatomy-feature-list {
  list-style: none;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.anatomy-feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.925rem;
  color: var(--color-text-muted);
}

.anatomy-feature-list li::before {
  content: "•";
  color: var(--color-accent);
  font-weight: bold;
}

/* -------------------------------------------------------------
   7. INTERACTIVE CLINICAL CALCULATOR
   ------------------------------------------------------------- */
.calc-card {
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 0.4rem;
  color: var(--color-primary);
}

.form-input, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  font-size: 1rem;
  color: var(--color-text-main);
  transition: border-color var(--transition-fast);
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: #FFFFFF;
}

.calc-output-panel {
  background-color: var(--color-surface-subtle);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.output-stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.output-stat:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.output-value {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--color-primary);
}

.output-label {
  font-size: 0.925rem;
  color: var(--color-text-muted);
}

/* -------------------------------------------------------------
   8. MODERN RESPONSIVE TABLE (Modern Web Guidance: responsive-table)
   ------------------------------------------------------------- */
.table-wrapper {
  overflow: auto;
  max-width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  box-shadow: var(--shadow-sm);
  container-type: inline-size;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.9375rem;
  text-align: left;
}

thead {
  position: sticky;
  top: 0;
  z-index: 2;
  background-color: var(--color-surface-subtle);
}

th, td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

thead th {
  font-weight: 700;
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  background-color: var(--color-surface);
  font-weight: 600;
  color: var(--color-primary);
}

tbody tr:hover td {
  background-color: #F8FAF9;
}

/* Стек-трансформация таблицы на мобильных через @container */
@container (width < 600px) {
  table, thead, tbody, tr, th, td {
    display: block;
  }

  thead {
    display: none;
  }

  tr {
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--color-border);
    padding: 1rem;
    background-color: #FFFFFF;
  }

  tbody th {
    position: static;
    background-color: var(--color-surface-subtle);
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
    border-radius: var(--radius-xs);
  }

  td {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--color-border-subtle);
  }

  td::before {
    content: attr(data-label) ": ";
    font-weight: 600;
    color: var(--color-text-muted);
    margin-right: 1rem;
  }
}

/* -------------------------------------------------------------
   9. ACCORDION FAQ (<details>)
   ------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--color-accent);
}

.faq-summary {
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--color-accent);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-summary::after {
  content: "−";
}

.faq-body {
  padding: 0 1.5rem 1.25rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* -------------------------------------------------------------
   10. NATIVE DIALOG MODAL (Modern Web Guidance: dialog)
   ------------------------------------------------------------- */
dialog.native-modal {
  margin: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  background-color: var(--color-surface);
  box-shadow: var(--shadow-lg);
  max-width: 580px;
  width: 90vw;
}

dialog.native-modal::backdrop {
  background-color: rgba(18, 56, 45, 0.65);
  backdrop-filter: blur(4px);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.25rem;
}

.modal-close-btn:hover {
  color: var(--color-primary);
}

/* -------------------------------------------------------------
   11. FOOTER & EDITORIAL POLICIES
   ------------------------------------------------------------- */
.site-footer {
  margin-top: auto;
  background-color: var(--color-primary-dark);
  color: #c0d4cf;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 4.5rem;
  padding-bottom: 2.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  color: #8faea7;
  font-size: 0.925rem;
  margin-top: 1rem;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: #a4c2bb;
  font-size: 0.925rem;
}

.footer-link:hover {
  color: #FFFFFF;
}

.footer-disclaimer {
  background-color: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: #8faea7;
  margin-bottom: 2rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8125rem;
  color: #7b9c95;
}

/* -------------------------------------------------------------
   12. RESPONSIVE BREAKPOINTS (@media)
   ------------------------------------------------------------- */
@media (max-width: 1120px) {
  .nav-desktop {
    display: none;
  }
  .nav-burger {
    display: flex;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding-block: 3rem;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .metric-strip {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .hero-card-floating {
    position: static;
    margin-top: 1rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .top-bar-meta {
    display: none;
  }
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
  }
  .header-actions .btn {
    display: none;
  }
}