/* ========================================
   MCLINIC — Хистероскопия лендинг
   Custom palette: warm rose neutrals + deep teal
   Fonts: Instrument Serif (display) + Work Sans (body)
   ======================================== */

:root,
[data-theme='light'] {
  /* Custom palette — warm rose neutrals + medical teal */
  --color-bg: #faf7f4;
  --color-surface: #ffffff;
  --color-surface-2: #f5f0ec;
  --color-surface-offset: #f0eae4;
  --color-surface-dynamic: #ebe4dd;
  --color-divider: #e2d9d1;
  --color-border: #d8cdc3;

  --color-text: #2a2420;
  --color-text-muted: #6b6259;
  --color-text-faint: #b0a89f;
  --color-text-inverse: #faf7f4;

  /* Primary — deep teal (medical, trustworthy) */
  --color-primary: #0d7377;
  --color-primary-hover: #0a5a5d;
  --color-primary-active: #074447;
  --color-primary-highlight: #d4e8e6;
  --color-primary-soft: #e8f2f1;

  /* Secondary — warm rose */
  --color-accent: #b76e79;
  --color-accent-soft: #f0dfe1;

  --color-success: #437a22;
  --color-warning: #964219;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(42, 36, 32, 0.06);
  --shadow-md: 0 4px 16px rgba(42, 36, 32, 0.08);
  --shadow-lg: 0 12px 40px rgba(42, 36, 32, 0.12);

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 720px;
  --content-default: 1080px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Work Sans', 'Helvetica Neue', sans-serif;
}

[data-theme='dark'] {
  --color-bg: #1a1715;
  --color-surface: #221e1b;
  --color-surface-2: #2a2522;
  --color-surface-offset: #1e1a17;
  --color-surface-dynamic: #332d29;
  --color-divider: #2e2825;
  --color-border: #3d3531;

  --color-text: #e8e2dc;
  --color-text-muted: #9c938a;
  --color-text-faint: #6b635c;
  --color-text-inverse: #1a1715;

  --color-primary: #5db0b3;
  --color-primary-hover: #4a9a9d;
  --color-primary-active: #3a8487;
  --color-primary-highlight: #2d3a39;
  --color-primary-soft: #1f2e2d;

  --color-accent: #c9919a;
  --color-accent-soft: #3d2a2e;

  --color-success: #6daa45;
  --color-warning: #bb653b;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* System dark fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #1a1715;
    --color-surface: #221e1b;
    --color-surface-2: #2a2522;
    --color-surface-offset: #1e1a17;
    --color-surface-dynamic: #332d29;
    --color-divider: #2e2825;
    --color-border: #3d3531;
    --color-text: #e8e2dc;
    --color-text-muted: #9c938a;
    --color-text-faint: #6b635c;
    --color-text-inverse: #1a1715;
    --color-primary: #5db0b3;
    --color-primary-hover: #4a9a9d;
    --color-primary-active: #3a8487;
    --color-primary-highlight: #2d3a39;
    --color-primary-soft: #1f2e2d;
    --color-accent: #c9919a;
    --color-accent-soft: #3d2a2e;
  }
}

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

html {
  -webkit-text-size-adjust: none;
  -moz-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* Type scale */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

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

a,
button,
[role='button'],
input,
textarea,
select {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.15;
  font-family: var(--font-display);
  font-weight: 400;
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection {
  background: color-mix(in oklab, var(--color-primary) 25%, transparent);
  color: var(--color-text);
}

button {
  cursor: pointer;
  background: none;
  border: none;
  font: inherit;
  color: inherit;
}

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

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

/* ============ LAYOUT ============ */
.container {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container--narrow {
  max-width: var(--content-narrow);
}

.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.section--alt {
  background-color: var(--color-surface-2);
}

.section__label {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section__label--light {
  color: var(--color-primary-highlight);
}

.section__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
}

.section__lead {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-12);
  line-height: 1.5;
}

.section__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.section__grid--reverse {
  grid-template-columns: 1fr 1.6fr;
}

.section__grid--reverse .section__text {
  order: 2;
}

.section__grid--reverse .section__aside {
  order: 1;
}

.prose p {
  margin-bottom: var(--space-4);
  line-height: 1.7;
}

.prose strong {
  font-weight: 600;
  color: var(--color-text);
}

.prose em {
  font-family: var(--font-display);
  font-size: 1.1em;
  font-style: italic;
}

/* ============ HEADER ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition:
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.header--hidden {
  transform: translateY(-100%);
}

.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.logo__img {
  height: 40px;
  width: auto;
  transition: opacity var(--transition-interactive);
}

.logo:hover .logo__img {
  opacity: 0.85;
}

.nav {
  display: flex;
  gap: var(--space-6);
  margin-left: auto;
}

.nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
}

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

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-interactive);
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

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

.btn--ghost {
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

/* ============ HERO ============ */
.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, var(--color-primary-soft) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, var(--color-accent-soft) 0%, transparent 50%);
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
  text-align: center;
}

.hero__eyebrow {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  margin-bottom: var(--space-4);
}

.hero__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero__title em {
  font-style: italic;
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin: 0 auto var(--space-8);
  line-height: 1.5;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-12);
}

.hero__badges {
  display: flex;
  gap: var(--space-8);
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
}

.badge svg {
  color: var(--color-primary);
}

/* ============ GRID ============ */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

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

/* ============ CARDS ============ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}

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

.card--highlight {
  background: var(--color-primary-soft);
  border-color: var(--color-primary-highlight);
}

.card--info {
  background: var(--color-surface);
}

.card--feature {
  background: var(--color-surface);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
  font-family: var(--font-body);
  font-weight: 600;
}

.card--highlight .card__title {
  color: var(--color-primary);
}

.card__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.card--highlight .btn {
  margin-top: var(--space-2);
}

/* ============ STEPS ============ */
.steps {
  list-style: none;
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.step {
  display: flex;
  gap: var(--space-4);
  align-items: start;
}

.step__num {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  font-weight: 700;
  font-family: var(--font-body);
}

.step__title {
  font-size: var(--text-base);
  font-weight: 600;
  font-family: var(--font-body);
  margin-bottom: var(--space-1);
}

.step__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============ CHECKLIST ============ */
.checklist {
  list-style: none;
  margin-top: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checklist li {
  position: relative;
  padding-left: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.4em;
  width: 16px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 50%;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") no-repeat center / 12px;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") no-repeat center / 12px;
}

/* ============ CALLOUT ============ */
.callout {
  display: flex;
  gap: var(--space-4);
  align-items: start;
  margin-top: var(--space-10);
  padding: var(--space-8);
  background: var(--color-primary-soft);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-primary-highlight);
}

.callout svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.callout p {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  max-width: none;
}

/* ============ SPLIT ============ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.split__col h2 {
  margin-bottom: var(--space-4);
}

/* ============ FAQ ============ */
.faq {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq__item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-interactive);
}

.faq__item[open] {
  border-color: var(--color-primary);
}

.faq__question {
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  font-family: var(--font-body);
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '+';
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-primary);
  transition: transform var(--transition-interactive);
}

.faq__item[open] .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  padding: 0 var(--space-6) var(--space-5);
}

.faq__answer p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============ BOOKING ============ */
.booking {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.booking__card {
  background: linear-gradient(in oklab, var(--color-primary), var(--color-primary-active));
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 4vw, var(--space-16));
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-12);
  align-items: center;
  color: var(--color-text-inverse);
}

.booking__title {
  font-size: var(--text-xl);
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
}

.booking__subtitle {
  font-size: var(--text-base);
  color: color-mix(in oklab, var(--color-text-inverse) 80%, transparent);
  line-height: 1.6;
}

.booking__contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: color-mix(in oklab, var(--color-text-inverse) 10%, transparent);
  border-radius: var(--radius-md);
  color: var(--color-text-inverse);
  font-size: var(--text-sm);
  font-weight: 500;
  border: 1px solid color-mix(in oklab, var(--color-text-inverse) 15%, transparent);
}

.contact-link:hover {
  background: color-mix(in oklab, var(--color-text-inverse) 18%, transparent);
}

.contact-link--text {
  cursor: default;
}

.contact-link--text:hover {
  background: color-mix(in oklab, var(--color-text-inverse) 10%, transparent);
}

.contact-link svg {
  color: color-mix(in oklab, var(--color-text-inverse) 80%, transparent);
  flex-shrink: 0;
}

/* ============ DISCLAIMER ============ */
.disclaimer {
  padding: var(--space-8) var(--space-6);
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-border);
}

.disclaimer p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  text-align: center;
  max-width: 80ch;
  margin: 0 auto;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--color-surface-offset);
  padding: var(--space-12) 0 var(--space-8);
  border-top: 1px solid var(--color-border);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.logo--footer .logo__img {
  height: 36px;
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

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

.footer__address p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.footer__bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.footer__bottom p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__sources {
  font-style: italic;
}

.footer__sources p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

.footer__sources ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.footer__sources li a {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

/* ============ RESPONSIVE ============ */
@media (max-width: 960px) {
  .nav {
    display: none;
  }

  .section__grid,
  .section__grid--reverse {
    grid-template-columns: 1fr;
  }

  .section__grid--reverse .section__text {
    order: 1;
  }

  .section__grid--reverse .section__aside {
    order: 2;
  }

  .split {
    grid-template-columns: 1fr;
  }

  .grid--3 {
    grid-template-columns: 1fr;
  }

  .grid--2 {
    grid-template-columns: 1fr;
  }

  .booking__card {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .footer__bottom {
    flex-direction: column;
  }

  .hero__badges {
    gap: var(--space-4);
  }
}

@media (max-width: 600px) {
  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .header__actions .btn--sm {
    display: none;
  }

  .callout {
    flex-direction: column;
  }

  .grid--2 {
    grid-template-columns: 1fr;
  }
}