/* ===========================================================
   Свой Каркас — Phase 1: Base, Header, Hero, Stats
   =========================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }

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

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

h1, h2, h3 { font-weight: var(--fw-semibold); line-height: var(--lh-heading); letter-spacing: -0.01em; }
h1 { font-size: var(--fs-h1); line-height: var(--lh-tight); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green-600);
}
.eyebrow::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--green-500);
  border-radius: 1px;
}

.lead { font-size: var(--fs-lead); color: var(--text-muted); font-weight: var(--fw-regular); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-size: var(--fs-small);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  transition: background var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--green-600);
  color: var(--text-on-dark);
}
.btn--primary:hover { background: var(--green-700); }

.btn--ghost {
  background: transparent;
  color: var(--text-on-dark);
  border-color: rgba(247, 244, 238, 0.4);
}
.btn--ghost:hover { border-color: var(--text-on-dark); background: rgba(247, 244, 238, 0.08); }

.btn--outline {
  background: transparent;
  color: var(--gr-900);
  border-color: var(--border);
}
.btn--outline:hover { border-color: var(--green-600); color: var(--green-600); }

.btn--block { width: 100%; }
.btn--sm { padding: 11px 20px; }

/* ===========================================================
   Header
   =========================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(247, 244, 238, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: height var(--dur-medium) var(--ease-standard),
              background var(--dur-medium) var(--ease-standard),
              border-color var(--dur-medium) var(--ease-standard),
              box-shadow var(--dur-medium) var(--ease-standard);
}
.site-header.is-scrolled {
  height: var(--header-h-scrolled);
  background: rgba(247, 244, 238, 0.98);
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-s);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}
.brand__mark { width: 34px; height: auto; }
.brand__word {
  font-size: 1.0625rem;
  font-weight: var(--fw-semibold);
  letter-spacing: 0.01em;
  color: var(--gr-900);
  line-height: 1.1;
}
.brand__word span { display: block; font-size: 0.6875rem; font-weight: var(--fw-medium); color: var(--text-muted); letter-spacing: 0.04em; }

.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  flex: 1;
  justify-content: center;
}
.nav a {
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  color: var(--gr-700);
  position: relative;
  padding: 6px 0;
  transition: color var(--dur-fast) var(--ease-standard);
}
.nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--green-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-fast) var(--ease-standard);
}
.nav a:hover { color: var(--green-600); }
.nav a:hover::after { transform: scaleX(1); }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  flex-shrink: 0;
}
.header-phone {
  font-size: 0.9375rem;
  font-weight: var(--fw-semibold);
  color: var(--gr-900);
  white-space: nowrap;
}
.header-phone span {
  display: block;
  font-size: 0.6875rem;
  font-weight: var(--fw-regular);
  color: var(--text-muted);
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  background: var(--surface);
  gap: 5px;
  flex-shrink: 0;
}
.burger span {
  width: 18px;
  height: 2px;
  background: var(--gr-900);
  border-radius: 1px;
  transition: transform var(--dur-fast) var(--ease-standard), opacity var(--dur-fast) var(--ease-standard);
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: var(--header-h-scrolled) 0 0 0;
  background: var(--bg);
  z-index: 90;
  padding: var(--sp-6) var(--container-pad);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-medium) var(--ease-standard), transform var(--dur-medium) var(--ease-standard);
}
.mobile-nav.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.mobile-nav a {
  font-size: 1.25rem;
  font-weight: var(--fw-medium);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--border);
}
.mobile-nav .btn { margin-top: var(--sp-5); }

/* ===========================================================
   Hero
   =========================================================== */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: stretch;
  overflow: hidden;
  background: var(--gr-900);
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  filter: grayscale(1) contrast(1.05) brightness(0.98);
}
.hero__media::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(30, 29, 25, 0.55) 0%, rgba(30, 29, 25, 0.15) 32%, rgba(30, 29, 25, 0.35) 68%, rgba(30, 29, 25, 0.88) 100%),
    linear-gradient(100deg, rgba(31, 61, 40, 0.55) 0%, rgba(30, 29, 25, 0.05) 45%);
}

.hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: calc(var(--header-h) + var(--sp-8));
  padding-bottom: var(--sp-9);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: var(--sp-8);
  align-items: end;
}

.hero__text { max-width: 640px; }
.hero__eyebrow { color: var(--wood-200); }
.hero__eyebrow::before { background: var(--wood-200); }
.hero h1 { color: var(--text-on-dark); margin-top: var(--sp-4); }
.hero__subtitle {
  margin-top: var(--sp-4);
  font-size: var(--fs-lead);
  color: var(--text-on-dark-muted);
  max-width: 480px;
}
.hero__cta-row {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  margin-top: var(--sp-6);
  flex-wrap: wrap;
}
.hero__cta-note {
  font-size: var(--fs-small);
  color: var(--text-on-dark-muted);
}

/* Compact lead-capture card, floated on the hero photo */
.hero-form {
  background: rgba(247, 244, 238, 0.97);
  backdrop-filter: blur(6px);
  border-radius: var(--radius-l);
  padding: var(--sp-6);
  box-shadow: var(--shadow-l);
}
.hero-form h3 { font-size: 1.125rem; }
.hero-form__lead { margin-top: var(--sp-1); font-size: var(--fs-small); color: var(--text-muted); }
.hero-form form { margin-top: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-3); }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  font-size: 0.75rem;
  font-weight: var(--fw-medium);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.field input {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius-s);
  padding: 12px 14px;
  font-size: 0.9375rem;
  transition: border-color var(--dur-fast) var(--ease-standard);
}
.field input:focus {
  outline: none;
  border-color: var(--green-500);
}
.field input:invalid:not(:placeholder-shown) { border-color: #B5493B; }

.consent {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.consent input { margin-top: 3px; accent-color: var(--green-600); }

.form-success {
  display: none;
  text-align: center;
  padding: var(--sp-5) 0;
}
.form-success__icon {
  width: 48px; height: 48px;
  margin: 0 auto var(--sp-3);
  border-radius: 50%;
  background: var(--green-100);
  color: var(--green-600);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
}
.hero-form.is-sent form,
.hero-form.is-sent .hero-form__lead,
.hero-form.is-sent .hero-form__title { display: none; }
.hero-form.is-sent .form-success { display: block; }

/* ===========================================================
   Stats strip
   =========================================================== */
.stats {
  background: var(--gr-900);
  color: var(--text-on-dark);
  padding: var(--sp-7) 0;
  position: relative;
}
.stats .container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}
.stat {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding-inline: var(--sp-4);
  position: relative;
}
.stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: calc(var(--sp-6) / -2);
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: var(--border-dark);
}
.stat__number {
  font-size: clamp(2rem, 1.5rem + 2vw, 2.75rem);
  font-weight: var(--fw-bold);
  color: var(--wood-200);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.stat__label {
  font-size: 0.9375rem;
  color: var(--text-on-dark-muted);
  max-width: 16ch;
  line-height: 1.35;
}

/* ===========================================================
   Utility placeholder for sections not yet built (Phase 2)
   =========================================================== */
.phase2-note {
  text-align: center;
  padding: var(--sp-9) var(--container-pad);
  color: var(--text-muted);
  font-size: var(--fs-small);
  border-top: 1px dashed var(--border);
}

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 1360px) {
  .nav { display: none; }
  .header-phone { display: none; }
  .burger { display: flex; }
}

@media (max-width: 1080px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero-form { max-width: 420px; }
}

@media (max-width: 560px) {
  .header-actions .btn--primary { display: none; }
  .brand__word span { display: none; }
}

@media (max-width: 720px) {
  :root { --header-h: 72px; --header-h-scrolled: 64px; }
  .hero { min-height: auto; }
  .hero__content { padding-top: calc(var(--header-h) + var(--sp-6)); padding-bottom: var(--sp-7); }
  .hero__grid { gap: var(--sp-6); }
  .hero__cta-row { flex-direction: column; align-items: stretch; }
  .hero__cta-row .btn { width: 100%; }
  .hero-form { max-width: none; padding: var(--sp-5); }
  .stats .container { grid-template-columns: 1fr; gap: var(--sp-5); }
  .stat:not(:last-child)::after { display: none; }
  .stat { padding-inline: 0; }
}

@media (max-width: 420px) {
  .brand__word { font-size: 0.9375rem; }
}