/* =============================================
   TRASH_MATH — Layouts
   ============================================= */

.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 clamp(24px, 4vw, 48px);
}
.container-sm { max-width: var(--container-sm); }
.container-md { max-width: var(--container-md); }
.container-lg { max-width: var(--container-lg); }

/* Grid */
.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

/* Flex */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ===== НАВИГАЦИЯ ===== */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(245, 240, 235, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  z-index: var(--z-sticky);
  transition: transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
}

.nav-inner {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--text-primary);
  letter-spacing: -0.03em;
  text-decoration: none;
  position: relative;
  flex-shrink: 0;
}
.nav-logo::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-color);
  border-radius: var(--radius-pill);
}
.nav-logo span {
  color: var(--primary-dark);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-link {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  transition: transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-secondary);
}
.nav-link.active {
  color: var(--primary-deeper);
  background: var(--primary-light);
  font-weight: var(--font-weight-semibold);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
  position: relative;
  z-index: 1001;
  flex-shrink: 0;
  touch-action: manipulation;
}
.nav-hamburger span {
  pointer-events: none;
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
}
.nav-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile menu */
.nav-mobile {
  position: absolute;
  top: 100%;
  right: 0;
  width: 100%;
  max-width: 400px;
  height: calc(100vh - var(--nav-height));
  background: var(--bg-primary);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
  border-left: 1px solid var(--border-light);
  overflow-y: auto;
  padding: var(--space-lg);
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  
  /* Slide-in animation from right */
  visibility: hidden;
  opacity: 0;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease, visibility 0.4s;
}
.nav-mobile.active {
  visibility: visible;
  opacity: 1;
  transform: translateX(0);
}
.nav-mobile .nav-link {
  font-size: var(--font-size-lg);
  padding: var(--space-md) var(--space-lg);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 120px 0;
  position: relative;
  overflow: hidden;
  min-height: 70vh;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--primary-light) 100%);
  z-index: -2;
}

/* Декоративные круги (как в дизайн-референсах) */
.hero-circle {
  position: absolute;
  border-radius: var(--radius-circle);
  background: var(--accent-color);
  opacity: 0.2;
  z-index: -1;
  animation: float 6s ease-in-out infinite;
}
.hero-circle-1 { width: 300px; height: 300px; top: -50px; right: 10%; animation-delay: 0s; }
.hero-circle-2 { width: 150px; height: 150px; bottom: 20%; left: 5%; animation-delay: 2s; }
.hero-circle-3 { width: 80px; height: 80px; top: 30%; right: 25%; animation-delay: 4s; }
.hero-circle-4 { width: 200px; height: 200px; bottom: -50px; right: 30%; background: var(--primary-color); animation-delay: 1s; }

/* ===== SECTION ===== */
.section {
  padding: 140px 0;
  position: relative;
}
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}
.section-title {
  margin-bottom: var(--space-sm);
}
.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Wave divider */
.wave-divider {
  position: relative;
  height: 80px;
  overflow: hidden;
}
.wave-divider svg {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 80px;
}

/* ===== SIDEBAR LAYOUT ===== */
.sidebar-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-lg);
  min-height: calc(100vh - var(--nav-height));
}

.sidebar {
  background: var(--bg-card);
  border-right: 1px solid var(--border-light);
  padding: var(--space-lg);
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
}

.sidebar-nav {
  list-style: none;
  padding: 0;
}
.sidebar-nav-item {
  margin-bottom: var(--space-xs);
}
.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  text-decoration: none;
}
.sidebar-nav-link:hover { background: var(--bg-secondary); color: var(--text-primary); }
.sidebar-nav-link.active {
  background: var(--primary-light);
  color: var(--primary-deeper);
  font-weight: var(--font-weight-semibold);
}

/* ===== DASHBOARD LAYOUT ===== */
.dashboard-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: calc(100vh - var(--nav-height));
}

.dashboard-main {
  padding: var(--space-xl);
  overflow-y: auto;
}

.dashboard-header {
  margin-bottom: var(--space-xl);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

/* ===== FOOTER ===== */
.main-footer {
  background: var(--bg-card);
  border-top: 1px solid var(--border-light);
  padding: var(--space-xl) 0;
  margin-top: var(--space-3xl);
}
/* Версия платформы */
.version-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-color);
  color: #ffffff;
  padding: 2px 5px;
  border-radius: 4px;
  font-size: 0.55rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.5px;
  pointer-events: none;
}

/* Сетка подвала */
.footer-columns {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-lg) var(--space-xl);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
}

.brand-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-slogan {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 12px;
  margin-bottom: var(--space-md);
  line-height: 1.5;
  max-width: 80%;
}

.footer-heading {
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
  color: var(--text-color);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
}

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

/* Мобильный вид футера */
@media (max-width: 768px) {
  .footer-columns {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .sidebar-layout { grid-template-columns: 1fr; }
  .dashboard-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  
  /* Mobile nav header fixes */
  .user-name-text { display: none !important; }
  .nav-inner { padding: 0 var(--space-sm); gap: 4px; }
  .nav-actions { gap: 4px; }
}

@media (max-width: 768px) {
  /* Fix dropdown menus on mobile so they don't overflow viewport */
  .nav-actions .dropdown-menu,
  .notifications-dropdown {
    position: fixed !important;
    top: calc(var(--nav-height) + 5px) !important;
    left: var(--space-sm) !important;
    right: var(--space-sm) !important;
    width: auto !important;
    min-width: 0 !important;
    max-width: none !important;
  }
  
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
  
  .hero { min-height: 50vh; padding: 80px 0; }
  .hero-circle-1 { width: 150px; height: 150px; }
  .hero-circle-4 { display: none; }
  
  .section { padding: 80px 0; }
  
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  .stats-row { grid-template-columns: 1fr; }
}