/* ============================================
   BuildGuide — Layout
   ============================================ */

/* ================================================
   HEADER
   ================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .header__inner {
    padding: 0 var(--space-6);
  }
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  text-decoration: none;
  flex-shrink: 0;
}

.header__logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.header__logo img {
  height: 32px;
  width: auto;
}

.header__nav {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

@media (min-width: 768px) {
  .header__nav {
    display: flex;
  }
}

.header__link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-600);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.header__link:hover,
.header__link.is-active {
  color: var(--color-primary);
  background: var(--color-primary-50);
  text-decoration: none;
}

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

/* Hamburger */
.header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.header__burger:hover {
  background: var(--color-gray-100);
}

.header__burger span {
  display: block;
  height: 2px;
  background: var(--color-gray-700);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

/* Mobile menu */
.header__mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-overlay);
  background: var(--color-bg);
  padding: var(--space-4);
  overflow-y: auto;
}

.header__mobile-menu.is-open {
  display: block;
}

.header__mobile-menu .header__link {
  display: block;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  border-radius: var(--radius-lg);
}

/* ================================================
   FOOTER
   ================================================ */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: auto;
}

.footer a {
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: #fff;
  text-decoration: none;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-10);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer__col h4 {
  color: #fff;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.footer__col p {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

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

.footer__col li a {
  font-size: var(--text-sm);
  padding: var(--space-1) 0;
  display: inline-block;
}

.footer__bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-gray-700);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
  font-size: var(--text-sm);
}

@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ================================================
   MAIN
   ================================================ */
.main {
  min-height: calc(100vh - var(--header-height) - 200px);
}

/* ================================================
   HERO
   ================================================ */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0f2b46 0%, #143a5c 40%, #1a5276 70%, #1e6fa0 100%);
  color: #fff;
  text-align: center;
  padding: var(--space-16) var(--space-4) var(--space-12);
  overflow: hidden;
}

.hero__pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.04) 0%, transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(255,255,255,0.02) 0%, transparent 60%);
  pointer-events: none;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-24) var(--space-6) var(--space-16);
  }
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: #fff;
  margin-bottom: var(--space-4);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.15;
}

@media (min-width: 768px) {
  .hero__title {
    font-size: var(--text-4xl);
  }
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.7);
  max-width: 560px;
  margin: 0 auto var(--space-10);
  line-height: var(--leading-relaxed);
}

/* ================================================
   SEARCH HERO (search bar in hero)
   ================================================ */
.search-hero {
  max-width: 760px;
  margin: 0 auto;
}

.search-hero__fields {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: #fff;
  border-radius: 24px;
  padding: var(--space-4);
  box-shadow: 0 20px 60px rgba(0,0,0,0.25), 0 4px 16px rgba(0,0,0,0.1);
}

@media (min-width: 768px) {
  .search-hero__fields {
    flex-direction: row;
    align-items: stretch;
    padding: var(--space-2);
  }
}

.search-hero__field {
  position: relative;
  flex: 2;
}

.search-hero__field label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-500);
  padding: var(--space-2) var(--space-4) 0;
}

@media (min-width: 768px) {
  .search-hero__field label {
    padding: var(--space-3) var(--space-5) 0;
  }
}

.search-hero__field .input {
  border: none;
  background: transparent;
  padding: var(--space-1) var(--space-4) var(--space-3);
  font-size: var(--text-base);
  color: var(--color-gray-900);
  width: 100%;
  height: auto;
}

.search-hero__field .input:focus {
  box-shadow: none;
  outline: none;
}

/* Separator between fields on mobile */
@media (max-width: 767px) {
  .search-hero__field + .search-hero__field {
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--space-2);
    margin-top: var(--space-2);
  }
}

/* Separator between fields on desktop */
@media (min-width: 768px) {
  .search-hero__field + .search-hero__field {
    border-left: 1px solid var(--color-gray-200);
  }

  .search-hero__field .input {
    padding: var(--space-1) var(--space-5) var(--space-3);
  }
}

/* Search button */
.search-hero__btn {
  border-radius: 18px;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
  min-height: 52px;
}

@media (min-width: 768px) {
  .search-hero__btn {
    margin-top: 0;
    border-radius: 20px;
    padding: var(--space-4) var(--space-8);
    min-height: unset;
    align-self: center;
  }
}

/* Popular tags below search */
.hero__tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
}

.hero__tags-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  margin-right: var(--space-1);
}

.hero__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.85);
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.hero__tag:hover {
  background: rgba(255,255,255,0.25);
  color: #fff;
  text-decoration: none;
}

/* ================================================
   SECTION
   ================================================ */
.section {
  padding: var(--space-12) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-16) 0;
  }
}

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

.section--cta {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-800));
  color: #fff;
}

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

@media (min-width: 768px) {
  .section__title {
    font-size: var(--text-3xl);
  }
}

.section__cta {
  display: flex;
  justify-content: flex-end;
}

.section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ================================================
   GRIDS
   ================================================ */
.company-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .company-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .company-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

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

@media (min-width: 768px) {
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .article-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .category-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ================================================
   SEARCH PAGE (split layout)
   ================================================ */
.search-page {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - var(--header-height));
}

@media (min-width: 1024px) {
  .search-page {
    flex-direction: row;
  }
}

.search-page__sidebar {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-5);
}

@media (min-width: 1024px) {
  .search-page__sidebar {
    width: 320px;
    flex-shrink: 0;
    border-bottom: none;
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    max-height: calc(100vh - var(--header-height));
    position: sticky;
    top: var(--header-height);
    padding: var(--space-6);
  }
}

.search-page__content {
  flex: 1;
  min-width: 0;
}

.search-page__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

@media (min-width: 768px) {
  .search-page__header {
    padding: var(--space-4) var(--space-6);
  }
}

.search-page__count {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.search-page__count strong {
  color: var(--color-text);
}

.search-page__view-toggle {
  display: flex;
  gap: var(--space-1);
}

.search-page__view-toggle button {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
}

.search-page__view-toggle button:hover,
.search-page__view-toggle button.is-active {
  color: var(--color-primary);
  background: var(--color-primary-50);
}

/* Search results list */
.search-results {
  padding: var(--space-4);
}

@media (min-width: 768px) {
  .search-results {
    padding: var(--space-6);
  }
}

.search-results .company-grid {
  /* Optionally 2-col in list mode */
}

/* Search map */
.search-map {
  width: 100%;
  height: 300px;
  background: var(--color-gray-100);
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 1024px) {
  .search-map {
    height: 400px;
  }
}

/* Search filters (sidebar form) */
.search-filters {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.search-filters__section {
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-gray-100);
}

.search-filters__section:last-child {
  border-bottom: none;
}

.search-filters__section h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-gray-800);
  margin-bottom: var(--space-3);
}

/* ================================================
   COMPANY PAGE (detail)
   ================================================ */
.company-page {
  padding: var(--space-6) 0;
}

@media (min-width: 768px) {
  .company-page {
    padding: var(--space-10) 0;
  }
}

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

@media (min-width: 1024px) {
  .company-page__grid {
    grid-template-columns: 1fr 360px;
    gap: var(--space-8);
  }
}

.company-page__main {
  min-width: 0;
}

.company-page__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

@media (min-width: 1024px) {
  .company-page__sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--space-6));
    align-self: flex-start;
  }
}

.company-page__header {
  margin-bottom: var(--space-8);
}

.company-page__identity {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.company-page__logo {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-xl);
  object-fit: contain;
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .company-page__logo {
    width: 88px;
    height: 88px;
  }
}

.company-page__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.company-page__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.company-page__description {
  margin-bottom: var(--space-8);
}

.company-page__description h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.company-page__photos {
  margin-bottom: var(--space-8);
}

.company-page__photos h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.company-page__details {
  margin-bottom: var(--space-8);
}

.company-page__details h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

.company-page__map {
  width: 100%;
  height: 280px;
  border-radius: var(--radius-xl);
  background: var(--color-gray-100);
  overflow: hidden;
  margin-bottom: var(--space-6);
}

/* ================================================
   AUTH PAGES
   ================================================ */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height));
  padding: var(--space-6) var(--space-4);
  background: var(--color-bg-alt);
}

.auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  .auth-card {
    padding: var(--space-10) var(--space-8);
  }
}

.auth-card h1 {
  font-size: var(--text-2xl);
  text-align: center;
  margin-bottom: var(--space-2);
}

.auth-card p {
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

.auth-card__footer {
  text-align: center;
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.auth-form .form-group {
  margin-bottom: var(--space-4);
}

.auth-form .btn {
  margin-top: var(--space-2);
}

/* Social login / divider */
.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-6) 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* ================================================
   RESPONSIVE: all layouts
   ================================================ */
@media (max-width: 767px) {
  h1 { font-size: var(--text-2xl); }
  h2 { font-size: var(--text-xl); }
  h3 { font-size: var(--text-lg); }
}