/*
 * layout.css - Header/Footer/Component cho sieutut.com demo
 */

/* === HEADER === */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-300);
  box-shadow: var(--sh-sm);
}
.site-header .wrap {
  max-width: 1280px; margin: 0 auto; padding: 12px var(--sp-4);
  display: flex; align-items: center; gap: var(--sp-4);
}
.brand-link {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: var(--black);
  font-weight: 800; font-size: 18px;
}
.brand-link:hover { text-decoration: none; color: var(--black); }
.brand-link svg { width: 36px; height: 24px; }

.nav-main {
  display: flex; gap: var(--sp-2); margin-left: var(--sp-4);
}
.nav-main a {
  padding: 8px 14px; border-radius: var(--r-md);
  color: var(--gray-700); font-weight: 500; font-size: 14px;
  text-decoration: none;
}
.nav-main a:hover, .nav-main a.active {
  background: var(--orange-light); color: var(--orange-darker);
}

.search-wrap {
  position: relative; flex: 1; max-width: 380px; margin-left: auto;
}
.search-wrap input {
  padding: 8px 12px 8px 36px; border-radius: var(--r-full);
  border: 2px solid var(--gray-300); font-size: 13px;
}
.search-wrap input:focus { border-color: var(--orange-primary); }
.search-wrap::before {
  content: "🔍"; position: absolute; left: 12px; top: 8px;
  font-size: 13px; opacity: 0.6;
}
.search-suggest {
  position: absolute; top: 100%; left: 0; right: 0; margin-top: 4px;
  background: var(--white); border: 1px solid var(--gray-300);
  border-radius: var(--r-md); box-shadow: var(--sh-lg);
  max-height: 340px; overflow-y: auto; display: none; z-index: 50;
}
.search-suggest.show { display: block; }
.search-suggest a {
  display: block; padding: 10px 14px; border-bottom: 1px solid var(--gray-100);
  color: var(--black); text-decoration: none;
}
.search-suggest a:hover { background: var(--orange-light); }
.search-suggest .name { font-weight: 600; font-size: 14px; }
.search-suggest .desc { font-size: 12px; color: var(--gray-500); margin-top: 2px; }
.search-suggest .see-all {
  text-align: center; background: var(--gray-100);
  color: var(--orange-darker); font-weight: 600; font-size: 13px;
}

.user-area { display: flex; align-items: center; gap: var(--sp-2); }
.lang-badge {
  padding: 4px 10px; border: 1px solid var(--gray-300);
  border-radius: var(--r-sm); font-size: 11px; font-weight: 600;
  color: var(--gray-700); background: var(--white); cursor: pointer;
}

/* === HERO === */
.hero {
  background: linear-gradient(135deg, var(--orange-light) 0%, var(--white) 100%);
  padding: var(--sp-12) var(--sp-4);
  text-align: center;
}
.hero h1 {
  font-size: var(--text-display); font-weight: 800;
  margin-bottom: var(--sp-3);
  background: linear-gradient(135deg, var(--black) 0%, var(--orange-darker) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero .lead {
  font-size: 18px; color: var(--gray-500); max-width: 680px;
  margin: 0 auto var(--sp-6);
}
.hero-search {
  max-width: 600px; margin: 0 auto;
  display: flex; gap: 8px;
}
.hero-search input {
  font-size: 16px; padding: 14px 18px;
}
.hero-tags {
  display: flex; gap: 8px; justify-content: center;
  flex-wrap: wrap; margin-top: var(--sp-4);
}
.hero-tags a {
  padding: 4px 12px; border-radius: var(--r-full);
  background: var(--white); border: 1px solid var(--orange-border);
  color: var(--orange-darker); font-size: 12px; font-weight: 600;
}
.hero-tags a:hover { background: var(--orange-primary); color: white; text-decoration: none; border-color: var(--orange-primary); }

@media (max-width: 768px) {
  .hero { padding: var(--sp-8) var(--sp-4); }
  .hero h1 { font-size: 30px; }
  .hero .lead { font-size: 15px; }
}

/* === SECTION HEADER === */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--sp-4);
}
.section-header h2 { margin: 0; }
.section-header .more {
  font-size: 13px; font-weight: 600;
}

/* === TOOL CARD === */
.tool-card {
  background: var(--white); border: 1px solid var(--gray-300);
  border-radius: var(--r-lg); padding: var(--sp-4);
  display: flex; flex-direction: column;
  transition: all 0.2s ease; position: relative;
  text-decoration: none;
}
.tool-card:hover {
  border-color: var(--orange-primary);
  box-shadow: var(--sh-lg); transform: translateY(-3px);
  text-decoration: none;
}
.tool-card .badges {
  position: absolute; top: 12px; right: 12px;
  display: flex; gap: 4px;
}
.badge {
  padding: 2px 8px; border-radius: var(--r-sm);
  font-size: 10px; font-weight: 700;
  letter-spacing: 0.3px;
}
.badge-hot { background: var(--error); color: white; }
.badge-new { background: var(--success); color: white; }
.badge-premium { background: var(--warning); color: var(--black); }
.badge-free { background: var(--orange-light); color: var(--orange-darker); }

.tool-card .icon {
  width: 48px; height: 48px;
  background: var(--orange-light); border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin-bottom: var(--sp-3);
}
.tool-card .name {
  font-size: 16px; font-weight: 700; color: var(--black);
  margin-bottom: 6px;
}
.tool-card .desc {
  font-size: 13px; color: var(--gray-500); line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; flex: 1; margin-bottom: var(--sp-3);
}
.tool-card .meta {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; color: var(--gray-500);
}
.tool-card .use-btn {
  display: block; margin-top: var(--sp-3);
  padding: 8px 12px; background: var(--orange-primary); color: white;
  border-radius: var(--r-md); text-align: center;
  font-weight: 600; font-size: 13px;
}

/* === CATEGORY CARD === */
.cat-card {
  background: var(--white); border: 1px solid var(--gray-300);
  border-radius: var(--r-lg); padding: var(--sp-4);
  text-align: center; text-decoration: none; color: var(--black);
  transition: all 0.2s ease;
}
.cat-card:hover {
  border-color: var(--orange-primary);
  transform: translateY(-2px);
  box-shadow: var(--sh-md);
  text-decoration: none;
}
.cat-card .icon {
  font-size: 36px; margin-bottom: var(--sp-2);
}
.cat-card .name {
  font-weight: 700; color: var(--black); margin-bottom: 4px;
}
.cat-card .count {
  font-size: 12px; color: var(--gray-500);
}

/* === BREADCRUMB === */
.breadcrumb {
  display: flex; gap: 6px; font-size: 13px;
  color: var(--gray-500); margin: var(--sp-4) 0;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--gray-500); text-decoration: none; }
.breadcrumb a:hover { color: var(--orange-primary); }
.breadcrumb .sep::after { content: "›"; }
.breadcrumb .current { color: var(--black); font-weight: 600; }

/* === AD SLOT === */
.ad-slot {
  background: var(--gray-100); border: 1px dashed var(--gray-300);
  border-radius: var(--r-md); padding: var(--sp-4);
  text-align: center; margin: var(--sp-6) 0;
  position: relative; min-height: 90px;
  display: flex; align-items: center; justify-content: center;
}
.ad-slot::before {
  content: "Quảng cáo"; position: absolute; top: 6px; left: 12px;
  font-size: 10px; color: var(--gray-500); font-weight: 600;
}
.ad-slot .placeholder {
  color: var(--gray-500); font-size: 13px; font-style: italic;
}

/* === SIDEBAR === */
.layout-with-sidebar {
  display: grid; grid-template-columns: 260px 1fr; gap: var(--sp-6);
}
@media (max-width: 1024px) {
  .layout-with-sidebar { grid-template-columns: 1fr; }
}
.sidebar-filter {
  background: var(--white); border: 1px solid var(--gray-300);
  border-radius: var(--r-lg); padding: var(--sp-4);
}
.sidebar-filter h3 { font-size: 14px; margin-bottom: var(--sp-3); color: var(--black); }
.sidebar-filter label {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 0; font-size: 13px; cursor: pointer;
}

/* === PAGINATION === */
.pagination {
  display: flex; justify-content: center; gap: 4px;
  margin: var(--sp-6) 0;
}
.pagination a, .pagination span {
  padding: 8px 14px; border-radius: var(--r-md);
  border: 1px solid var(--gray-300); background: var(--white);
  color: var(--gray-700); font-weight: 600; font-size: 13px;
  text-decoration: none;
}
.pagination a:hover { border-color: var(--orange-primary); color: var(--orange-darker); }
.pagination .current {
  background: var(--orange-primary); color: white; border-color: var(--orange-primary);
}

/* === FOOTER === */
.site-footer {
  background: var(--gray-100); border-top: 1px solid var(--gray-300);
  padding: var(--sp-8) var(--sp-4) var(--sp-4);
  margin-top: var(--sp-12);
}
.site-footer .wrap {
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--sp-6);
}
@media (max-width: 768px) {
  .site-footer .wrap { grid-template-columns: 1fr; }
}
.site-footer h4 {
  font-size: 13px; color: var(--black);
  text-transform: uppercase; letter-spacing: 0.5px;
  margin-bottom: var(--sp-3);
}
.site-footer ul { list-style: none; }
.site-footer ul li { margin-bottom: 6px; }
.site-footer a { color: var(--gray-500); font-size: 13px; }
.site-footer a:hover { color: var(--orange-primary); }
.site-footer .copyright {
  max-width: 1280px; margin: var(--sp-6) auto 0;
  padding-top: var(--sp-4); border-top: 1px solid var(--gray-300);
  font-size: 12px; color: var(--gray-500);
}

/* === IFRAME TOOL === */
.tool-frame-wrap {
  background: var(--white); border: 1px solid var(--gray-300);
  border-radius: var(--r-lg); padding: var(--sp-4);
}
.tool-frame-wrap .actions {
  display: flex; justify-content: flex-end;
  margin-bottom: var(--sp-3);
}
.tool-iframe {
  width: 100%; min-height: 600px; border: 1px solid var(--gray-300);
  border-radius: var(--r-md); background: var(--white);
}

/* === FAQ ACCORDION === */
.faq-item {
  border: 1px solid var(--gray-300); border-radius: var(--r-md);
  margin-bottom: var(--sp-2); overflow: hidden;
}
.faq-q {
  padding: 14px 18px; background: var(--gray-100);
  cursor: pointer; font-weight: 600; color: var(--black);
  display: flex; justify-content: space-between; align-items: center;
  font-size: 14px;
}
.faq-q::after { content: "+"; font-size: 20px; color: var(--orange-primary); }
.faq-item.open .faq-q::after { content: "−"; }
.faq-a { padding: 14px 18px; display: none; font-size: 14px; }
.faq-item.open .faq-a { display: block; }

/* === DEMO BANNER === */
.demo-banner {
  background: linear-gradient(90deg, var(--warning) 0%, var(--orange-primary) 100%);
  color: white; padding: 8px 16px; text-align: center;
  font-size: 12px; font-weight: 600;
}
.demo-banner a { color: white; text-decoration: underline; }