/*
Theme Name: Giai Mat U Ky
Theme URI: https://giaimatuky.com
Author: Giai Mat U Ky Team
Author URI: https://giaimatuky.com
Description: Theme WordPress tối giản và hiện đại cho website Giai Mat U Ky
Version: 1.0.0
Text Domain: giaimatuky
*/
:root {
  --gmk-text: #0f172a;
  --gmk-muted: #64748b;
  --gmk-surface: #ffffff;
  --gmk-border: rgba(15, 23, 42, 0.08);
  --gmk-gradient: linear-gradient(135deg, #0f172a 0%, #3b82f6 100%);
  --gmk-radius: 16px;
  --gmk-font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

body {
  font-family: var(--gmk-font);
  color: var(--gmk-text);
  background: #f5f7fb;
  min-height: 100vh;
  line-height: 1.7;
}

a {
  color: #2563eb;
  text-decoration: none;
  transition: color 0.2s ease;
}
a:hover {
  color: #1d4ed8;
}

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

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

.gmk-hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.gmk-hero-card {
  position: relative;
  border-radius: var(--gmk-radius);
  overflow: hidden;
  min-height: 360px;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
}
.gmk-hero-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.gmk-hero-card:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(15, 23, 42, 0.9) 100%);
}
.gmk-hero-card__content {
  position: absolute;
  inset: 0;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.75rem;
  color: #fff;
}
.gmk-hero-card__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
}
.gmk-hero-card__title,
.gmk-hero-card__title a {
  color: #ffffff !important;
}
.gmk-hero-card__title a:hover {
  color: #bfdbfe !important;
}
.gmk-hero-card__title-link {
  color: #ffffff !important;
  text-decoration: none !important;
}
.gmk-hero-card__title-link:hover {
  color: #bfdbfe !important;
}

.gmk-card {
  background: var(--gmk-surface);
  border-radius: var(--gmk-radius);
  border: 1px solid var(--gmk-border);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.gmk-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
}
.gmk-card__media {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
}
.gmk-card__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.gmk-card__body {
  padding: 1.25rem 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.gmk-card__title {
  font-size: 1.1rem;
  line-height: 1.4;
  font-weight: 600;
  color: var(--gmk-text);
}
.gmk-card__excerpt {
  font-size: 0.95rem;
  color: var(--gmk-muted);
}

.gmk-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  color: inherit;
  font-size: 0.85rem;
  font-weight: 500;
}
.gmk-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  background: #0f172a;
  color: #fff;
  font-weight: 600;
}

.gmk-section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--gmk-text);
}

.gmk-latest article {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 1.25rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--gmk-border);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}
.gmk-latest article img {
  border-radius: 1rem;
}

.gmk-footer {
  background: #0f172a;
  color: rgba(255, 255, 255, 0.78);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}
.gmk-footer__grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.gmk-footer__title {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.8rem;
  color: #94a3b8;
  margin-bottom: 0.75rem;
}
.gmk-footer__brand {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
}
.gmk-footer__note {
  font-size: 0.9rem;
  color: #94a3b8;
}

.gmk-top-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
  color: var(--gmk-muted);
  font-weight: 500;
}
.gmk-top-nav a {
  color: inherit;
}
.gmk-top-nav a:hover {
  color: #0f172a;
}
.main-navigation {
  transition: all 0.25s ease;
}
@media (max-width: 768px) {
  .main-navigation {
    display: none;
  }
  .main-navigation.is-open {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #ffffff;
    padding: 1.5rem;
    border-bottom: 1px solid var(--gmk-border);
    box-shadow: 0 25px 40px rgba(15, 23, 42, 0.1);
    z-index: 60;
  }
  .main-navigation.is-open ul {
    flex-direction: column;
    gap: 1rem;
  }
}

.markdown-content {
  font-family: system-ui, ui-sans-serif, sans-serif;
  color: #111827;
  font-size: 1.08rem;
  line-height: 1.85;
}
.markdown-content h1 { font-size: 2.25rem; font-weight: 700; margin: 2rem 0 1.5rem; line-height: 1.1; }
.markdown-content h2 { font-size: 1.6rem; font-weight: 700; border-left: 4px solid #3b82f6; padding: 0.5rem 0 0.5rem 1rem; background: #e0f2fe; border-radius: 0.5rem; margin: 2rem 0 1.1rem; }
.markdown-content h3 { font-size: 1.2rem; font-weight: 600; padding: 0.25rem 0 0.25rem 1rem; border-left: 3px solid #93c5fd; margin: 1rem 0 1rem; background: #eff6ff; border-radius: 0.4rem; }
.markdown-content ul,
.markdown-content ol { margin: 1.25rem 0 1.25rem 2.5rem; }
.markdown-content li { margin-bottom: 0.6rem; }
.markdown-content blockquote {
  border-left: 4px solid #2563eb;
  background: #e0f2fe;
  color: #0c2856;
  font-style: italic;
  font-weight: 500;
  border-radius: 0.5rem;
  padding: 1rem 2rem;
  margin: 2rem 0;
}
.markdown-content img {
  max-width: 100%;
  margin: 2rem auto;
  border-radius: 1rem;
  border: 1px solid #e5e7eb;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
}
.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
  margin: 2rem 0;
}
.markdown-content th,
.markdown-content td {
  border: 1px solid #d1d5db;
  padding: 0.5rem 1rem;
}
.markdown-content th {
  background: #f8fafc;
  font-weight: 600;
}
.markdown-content pre,
.markdown-content code {
  background: #1e293b;
  color: #f8fafc;
  border-radius: 0.5rem;
  padding: 0.4rem 0.7rem;
  font-size: 0.95rem;
  font-family: Menlo, Consolas, monospace;
}
.markdown-content a {
  color: #2563eb;
  text-decoration: underline dotted 1.5px #60a5fa;
}
.markdown-content a:hover {
  color: #1d4ed8;
  text-decoration: underline solid 2px #1d4ed8;
}

.gmk-cta-button {
  color: #ffffff !important;
}
.gmk-cta-button:hover {
  color: #ffffff !important;
}

@media (max-width: 768px) {
  .gmk-shell {
    padding: 0 1rem;
  }
  .gmk-hero-grid {
    grid-template-columns: 1fr;
  }
  .gmk-hero-card {
    min-height: 280px;
  }
  .gmk-top-nav {
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .markdown-content {
    font-size: 1rem;
    line-height: 1.7;
  }
  .markdown-content h1 { font-size: 1.8rem; }
  .markdown-content h2 { font-size: 1.2rem; }
  .markdown-content h3 { font-size: 1.05rem; }
  .markdown-content img {
    margin: 1.25rem 0;
  }
  .markdown-content ul,
  .markdown-content ol {
    margin-left: 1.25rem;
  }
}