/* ========================================
   TRADING 2D – Layout System
   Header, Footer, Grid, Containers
   ======================================== */

/* ---- CONTAINER & GRID ---- */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

.container-fluid {
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

.container-sm {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

.container-lg {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

/* Grid System (CSS Grid) */
.grid {
  display: grid;
  gap: var(--sp-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-6 {
  grid-template-columns: repeat(6, 1fr);
}

/* Grid with auto-fit (responsive) */
.grid-auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-auto-sm {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-auto-lg {
  /* Реальне значення для теми задає industrial.css (auto-fit + center),
     цей рядок лишається як безпечний фолбек, якщо industrial.css не завантажено. */
  grid-template-columns: repeat(auto-fit, minmax(260px, 300px));
  justify-content: center;
}

/* ---- FLEXBOX UTILITIES ---- */

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-row {
  flex-direction: row;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-start {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
}

.flex-end {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}

.flex-gap-sm {
  gap: var(--sp-sm);
}

.flex-gap {
  gap: var(--sp-md);
}

.flex-gap-lg {
  gap: var(--sp-lg);
}

.flex-wrap {
  flex-wrap: wrap;
}

.flex-1 {
  flex: 1;
}

/* ---- SPACING UTILITIES ---- */

.mt-xs { margin-top: var(--sp-xs); }
.mt-sm { margin-top: var(--sp-sm); }
.mt-md { margin-top: var(--sp-md); }
.mt-lg { margin-top: var(--sp-lg); }
.mt-xl { margin-top: var(--sp-xl); }

.mb-xs { margin-bottom: var(--sp-xs); }
.mb-sm { margin-bottom: var(--sp-sm); }
.mb-md { margin-bottom: var(--sp-md); }
.mb-lg { margin-bottom: var(--sp-lg); }
.mb-2xl { margin-bottom: var(--sp-2xl); }
.mb-xl { margin-bottom: var(--sp-xl); }

.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }

.px-sm { padding: 0 var(--sp-sm); }
.px-md { padding: 0 var(--sp-md); }
.px-lg { padding: 0 var(--sp-lg); }

.py-sm { padding: var(--sp-sm) 0; }
.py-md { padding: var(--sp-md) 0; }
.py-lg { padding: var(--sp-lg) 0; }
.py-2xl { padding: var(--sp-2xl) 0; }

.p-md { padding: var(--sp-md); }
.p-lg { padding: var(--sp-lg); }

/* ---- HEADER ---- */

.site-header {
  background-color: var(--bg-card);
  border-bottom: var(--border-thin) solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-overlay);
  box-shadow: var(--shadow-sm);
  height: auto;
  display: block;
  flex-shrink: 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: var(--header-height-mobile);
  gap: var(--sp-md);
  padding: var(--sp-sm) 0;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  flex-shrink: 0;
}

.header-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.header-logo a {
  display: flex;
  align-items: center;
  text-decoration: none;
  line-height: 0;
}

.header-logo img,
.header-logo-img {
  height: 64px;
  width: auto;
  flex-shrink: 0;
  display: block;
}

/* Search Bar – fills space between logo block and action icons */
.header-search {
  flex: 1 1 auto;
  max-width: 600px;
  min-width: 0;
  display: flex;
  align-items: center;
}

.search-form {
  position: relative;
  width: 100%;
}

.search-input {
  width: 100%;
  padding: var(--sp-sm) calc(var(--sp-xl) + var(--sp-md)) var(--sp-sm) var(--sp-md);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--border-radius-md);
  font-size: var(--fs-sm);
  background-color: var(--color-bg);
  transition: border-color var(--duration-base) var(--easing-ease),
              box-shadow var(--duration-base) var(--easing-ease);
}

.search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: var(--color-white);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 10%, transparent);
}

.search-submit {
  position: absolute;
  top: 50%;
  right: var(--sp-xs);
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* Touch target ≥44px (anti-slop) */
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background-color: var(--btn-primary);
  color: var(--text-on-dark);
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.search-submit svg {
  width: 18px;
  height: 18px;
}

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

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  flex-shrink: 0;
}

.header-action-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--duration-base) var(--easing-ease);
}

.header-action-item:hover {
  color: var(--color-accent);
}

.header-action-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

.header-action-icon svg {
  width: 100%;
  height: 100%;
}

/* Badge sits on the icon's top-right corner, not over the glyph itself */
.header-action-badge {
  position: absolute;
  top: 0;
  right: 0;
  transform: translate(35%, -35%);
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  background-color: var(--btn-primary);
  color: var(--text-on-dark);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  font-weight: var(--fw-bold);
  line-height: 1;
  pointer-events: none;
  box-shadow: 0 0 0 2px var(--bg-card);
}

/* Language Switcher */
.header-lang {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.lang-select {
  padding: var(--sp-xs) var(--sp-sm);
  border: none;
  border-radius: var(--border-radius-sm);
  background-color: transparent;
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text-primary);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234B5563' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right center;
  padding-right: var(--sp-lg);
}

.lang-select:focus {
  outline: none;
  color: var(--color-accent);
}

/* Header contact (visible on XL screens) */
.header-contact {
  display: none;
  align-items: center;
  gap: var(--sp-sm);
  flex-shrink: 0;
  white-space: nowrap;
}

.header-contact-link {
  color: var(--color-text-primary);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: color var(--duration-base) var(--easing-ease);
}

.header-contact-link:hover {
  color: var(--color-accent);
}

/* Desktop navigation row (second line inside header) */
.header-nav-desktop {
  display: none;
  border-top: var(--border-thin) solid var(--color-border);
  max-height: 56px;
  overflow: hidden;
  transition: max-height var(--duration-base) var(--ease-out),
    opacity var(--duration-base) var(--ease-out);
}

/* RULE-30: dual-row sticky chrome — другий рядок навігації згортається
   при скролі вниз (hysteresis керується header.js, пороги 96/24px) */
.site-header.header--compact .header-nav-desktop {
  max-height: 0;
  opacity: 0;
  border-top-color: transparent;
}

.header-nav-list {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-lg);
  list-style: none;
  margin: 0;
  padding: var(--sp-sm) 0 var(--sp-md);
}

.header-nav-list a {
  color: var(--color-text-primary);
  font-weight: var(--fw-semibold);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: color var(--duration-base) var(--easing-ease);
}

.header-nav-list a:hover {
  color: var(--color-accent);
}

@media (min-width: 1200px) {
  .header-contact {
    display: flex;
  }
}

@media (min-width: 900px) {
  .header-nav-desktop {
    display: block;
  }

  .header-content {
    min-height: 80px;
  }
}

/* ---- FOOTER ---- */

footer {
  background-color: var(--color-text-primary);
  color: var(--color-white);
  padding: var(--sp-3xl) 0;
  margin-top: var(--sp-3xl);
  border-top: var(--border-thin) solid var(--color-border-dark);
  flex-shrink: 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-2xl);
  margin-bottom: var(--sp-2xl);
}

.footer-section h4 {
  color: var(--color-white);
  margin-bottom: var(--sp-lg);
  font-size: var(--fs-lg);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--sp-md);
}

.footer-section a {
  color: var(--color-text-light);
  text-decoration: none;
  transition: color var(--duration-base) var(--easing-ease);
}

.footer-section a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--sp-2xl);
  border-top: var(--border-thin) solid rgba(255, 255, 255, 0.1);
  font-size: var(--fs-sm);
  color: var(--color-text-light);
}

.footer-socials {
  display: flex;
  gap: var(--sp-lg);
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: var(--border-thin) solid rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-sm);
  color: var(--color-white);
  transition: background-color var(--duration-base) var(--easing-ease),
    border-color var(--duration-base) var(--easing-ease),
    color var(--duration-base) var(--easing-ease);
}

.footer-social-link:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

footer p {
  margin-bottom: var(--sp-sm);
}

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

footer strong {
  display: block;
  margin-bottom: var(--sp-xs);
  font-weight: var(--fw-semibold);
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-lg);
  }

  .footer-section h4 {
    font-size: var(--fs-base);
  }

  .footer-section {
    font-size: var(--fs-xs);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--sp-md);
    text-align: center;
  }

  .footer-copyright {
    order: 2;
  }

  .footer-socials {
    order: 1;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer-section {
    border-bottom: var(--border-thin) solid rgba(255, 255, 255, 0.1);
    padding-bottom: var(--sp-lg);
  }

  .footer-section:last-child {
    border-bottom: none;
  }

  .footer-socials .footer-social-link {
    width: 32px;
    height: 32px;
  }
}

/* ---- SIDEBAR ---- */

.sidebar {
  background-color: var(--color-white);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: var(--sp-lg);
}

.sidebar-section {
  margin-bottom: var(--sp-lg);
}

.sidebar-section:last-child {
  margin-bottom: 0;
}

.sidebar-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--sp-md);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  border-bottom: var(--border-thin) solid var(--color-border);
  padding-bottom: var(--sp-md);
}

/* ---- MOBILE MENU ---- */

.mobile-menu {
  visibility: hidden;
  position: fixed;
  top: var(--header-height-mobile);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-white);
  z-index: var(--z-dropdown);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--duration-base) var(--easing-ease-out),
              transform var(--duration-base) var(--easing-ease-out),
              visibility var(--duration-base) var(--easing-ease-out);
}

.mobile-menu.active {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.mobile-menu-content {
  padding: var(--sp-lg);
}

.mobile-search {
  margin-bottom: var(--sp-lg);
}

.mobile-search input {
  width: 100%;
  padding: var(--sp-md);
  border: var(--border-thin) solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-size: 16px;
}

.mobile-nav-list {
  list-style: none;
}

.mobile-nav-list li {
  margin-bottom: var(--sp-md);
}

.mobile-nav-list a {
  display: block;
  padding: var(--sp-md);
  color: var(--color-text-primary);
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  transition: background-color var(--duration-base) var(--easing-ease),
    color var(--duration-base) var(--easing-ease);
}

.mobile-nav-list a:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-accent);
}

@media (min-width: 768px) {
  .mobile-menu {
    display: none;
  }

  #menu-toggle {
    display: none;
  }
}

/* ---- BREADCRUMBS ---- */

.breadcrumbs {
  width: 100%;
}

.breadcrumbs-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-xs) 0;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--fs-sm);
  line-height: var(--lh-tight);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  color: var(--color-text-secondary);
  max-width: 100%;
}

.breadcrumb-item a {
  color: var(--text-main);
  opacity: 0.72;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

.breadcrumb-item a:hover {
  color: var(--color-accent-hover);
  opacity: 1;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin: 0 var(--sp-sm);
  color: var(--color-text-light);
  font-weight: var(--fw-regular);
  flex-shrink: 0;
}

.breadcrumb-item.active {
  color: var(--text-main);
  font-weight: var(--fw-semibold);
}

.breadcrumb-separator {
  display: none;
}

/* ---- MAIN CONTENT AREA ---- */

.main {
  /* RULE-04: html/body — flex-колонка (reset.css), .main забирає весь
     залишок висоти екрана, footer завжди прибитий донизу без calc() */
  flex: 1 0 auto;
  padding: 0 0 var(--sp-2xl);
}

.main > :first-child:not(.breadcrumbs-alt):not(.hero) {
  padding-top: var(--sp-2xl);
}

.section {
  padding: var(--sp-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--sp-2xl);
}

.section-header h2 {
  margin-bottom: var(--sp-md);
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: var(--fs-lg);
  max-width: 600px;
  margin: 0 auto;
}