/* ============================================================
   Альпы Сибири (alsib.xyz) — Архитектура стилей
   ============================================================ */
:root {
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-soft: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-subtle: #edf2f7;
  
  --color-text-main: #0f172a;
  --color-text-muted: #475569;
  --color-text-light: #94a3b8;
  
  --color-dark: #0b1520;
  --color-dark-surface: #132232;
  --color-dark-border: #1e354d;
  
  --color-primary: #0284c7;
  --color-primary-hover: #0369a1;
  --color-accent: #d97706;
  --color-accent-soft: #fef3c7;
  --color-pine: #15803d;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 30px rgba(15, 23, 42, 0.12);
  --shadow-xl: 0 20px 40px rgba(15, 23, 42, 0.2);
  
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 860px;
}

/* ============================================================
   Header & Navigation
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 21, 32, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-dark-border);
  color: #fff;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.brand-logo:hover {
  color: #e2f1f8;
}

.brand-logo img, .brand-logo svg {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
}

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

.brand-title {
  font-weight: 800;
  line-height: 1.15;
}

.brand-sub {
  font-size: 0.72rem;
  color: #94a3b8;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  color: #cbd5e1;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

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

.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
}

.nav-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-dark-border);
  color: #fff;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.mobile-toggle svg {
  width: 22px;
  height: 22px;
  display: block;
}

/* ============================================================
   Hero Component
   ============================================================ */
.hero {
  position: relative;
  background-color: var(--color-dark);
  color: #fff;
  padding: 5.5rem 0 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  filter: brightness(0.65);
  transform: scale(1.03);
  transition: transform 10s ease;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,21,32,0.4) 0%, rgba(11,21,32,0.85) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.badge-alpine {
  background: rgba(2, 132, 199, 0.25);
  border: 1px solid rgba(56, 189, 248, 0.4);
  color: #bae6fd;
}

.badge-accent {
  background: rgba(217, 119, 6, 0.25);
  border: 1px solid rgba(251, 191, 36, 0.4);
  color: #fde68a;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(2, 132, 199, 0.35);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

/* ============================================================
   Key Stats Strip
   ============================================================ */
.stats-strip {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 2rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.stat-item {
  padding: 0.5rem 1rem;
}

.stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--color-dark);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.stat-value span {
  color: var(--color-primary);
  font-size: 1.4rem;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-top: 4px;
}

/* ============================================================
   Section Typography & Layout
   ============================================================ */
.section {
  padding: 4.5rem 0;
}

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

.section-dark {
  background-color: var(--color-dark);
  color: #ffffff;
}

.section-header {
  margin-bottom: 3rem;
}

.section-header.text-center {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--color-dark);
  margin-bottom: 0.8rem;
}

.section-dark .section-title {
  color: #ffffff;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.section-dark .section-desc {
  color: #94a3b8;
}

/* ============================================================
   Cards & Grids
   ============================================================ */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.card-img-wrapper {
  position: relative;
  height: 230px;
  overflow: hidden;
  background-color: #0f172a;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card-img {
  transform: scale(1.05);
}

.card-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(11, 21, 32, 0.8);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
}

.card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 0.6rem;
  line-height: 1.3;
}

.card-text {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.card-meta {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ============================================================
   Article & Narrative Layouts
   ============================================================ */
.story-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  margin-bottom: 4rem;
}

.story-block.reversed {
  direction: rtl;
}

.story-block.reversed > * {
  direction: ltr;
}

.story-media {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  height: 380px;
}

.story-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.story-content h3 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 1rem;
  line-height: 1.25;
}

.story-content p {
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
  font-size: 1rem;
}

.fact-list {
  list-style: none;
  margin: 1.5rem 0;
  display: grid;
  gap: 0.75rem;
}

.fact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--color-text-main);
}

.fact-item svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  color: var(--color-pine);
  margin-top: 3px;
}

/* ============================================================
   Interactive Gallery
   ============================================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.gallery-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 280px;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  background-color: #0b1520;
}

.gallery-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery-card:hover img {
  transform: scale(1.08);
}

.gallery-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,23,42,0) 40%, rgba(15,23,42,0.85) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.25rem;
  color: #fff;
  transition: background 0.3s ease;
}

.gallery-card:hover .gallery-card-overlay {
  background: linear-gradient(180deg, rgba(15,23,42,0.2) 20%, rgba(15,23,42,0.92) 100%);
}

.gallery-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.gallery-desc {
  font-size: 0.8rem;
  color: #cbd5e1;
}

/* Lightbox Modal */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(11, 21, 32, 0.95);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.lightbox.active {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 1000px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-img {
  max-width: 100%;
  max-height: 75vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  object-fit: contain;
}

.lightbox-caption {
  color: #f8fafc;
  margin-top: 1rem;
  font-size: 1rem;
  text-align: center;
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

/* ============================================================
   Forms & Contact
   ============================================================ */
.contact-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

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

.form-label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  background: #fdfdfd;
  color: var(--color-text-main);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
  background: #ffffff;
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  font-size: 0.92rem;
  display: none;
}

.form-alert.alert-success {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

/* ============================================================
   Footer Component
   ============================================================ */
.site-footer {
  background-color: var(--color-dark);
  color: #94a3b8;
  padding: 4.5rem 0 2rem;
  margin-top: auto;
  border-top: 1px solid var(--color-dark-border);
}

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

.footer-col h4 {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-links {
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: #ffffff;
  padding-left: 3px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom a {
  color: #94a3b8;
}

.footer-bottom a:hover {
  color: #ffffff;
}

/* ============================================================
   Responsive Utilities
   ============================================================ */
@media (max-width: 992px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .story-block {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .story-media {
    height: 300px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--color-dark);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    display: none;
    border-bottom: 1px solid var(--color-dark-border);
  }
  .nav-menu.is-open {
    display: flex;
  }
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero {
    padding: 3.5rem 0 3rem;
  }
}