/* ============================================================
   BLUE THEME + HOVER EFFECTS
   ใช้ร่วมกับทุกหน้าในโปรเจกต์ — วางไว้ที่ css/blue-theme.css
   include ด้วย: <link rel="stylesheet" href="css/blue-theme.css">
   ============================================================ */

:root {
  --blue-primary: #1a56db;
  --blue-dark: #0f3d9e;
  --blue-deeper: #0a2563;
  --blue-light: #e8f0fe;
  --blue-glow: rgba(26, 86, 219, 0.3);
  --blue-accent: #38bdf8;
  --radius: 10px;
  --trans: 0.38s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ════════════════════════════════════════════════════════════
   SECTION BACKGROUNDS
   ════════════════════════════════════════════════════════════ */

/* ── ตัวอย่างผลงาน — off-white + grid ──────────────────── */
section.pt-0.pb-2 {
  background-color: #f8faff;
  background-image:
    linear-gradient(rgba(26, 86, 219, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 86, 219, 0.035) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ── ทำไมต้องเราหรือ Why Us — navy gradient + grid ─────── */
section.p-0.bg-light-gray {
  background-color: #0b1f4a !important;
  background-image:
    linear-gradient(135deg, #0b1f4a 0%, #2d4a7a 100%),
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px) !important;
  background-size:
    cover,
    40px 40px,
    40px 40px !important;
  position: relative;
}
/* grid overlay via pseudo */
section.p-0.bg-light-gray::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
section.p-0.bg-light-gray > * {
  position: relative;
  z-index: 1;
}
/* ปรับสี text ใน Why section ให้อ่านได้บน navy bg */
section.p-0.bg-light-gray h4 {
  color: #fff !important;
}
section.p-0.bg-light-gray .feature-content .alt-font {
  color: #fff !important;
}
section.p-0.bg-light-gray .feature-content p {
  color: rgba(255, 255, 255, 0.68) !important;
}
section.p-0.bg-light-gray .text-yellow {
  color: #f59e0b !important;
}

/* ── ข่าวสารกิจกรรม — gradient ฟ้าอ่อน ─────────────────── */
.news-section-wrap {
  background: linear-gradient(160deg, #f0f5ff 0%, #dbeafe 60%, #e8f0fe 100%);
  background-image:
    linear-gradient(160deg, #f0f5ff 0%, #dbeafe 60%, #e8f0fe 100%),
    linear-gradient(rgba(26, 86, 219, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26, 86, 219, 0.025) 1px, transparent 1px);
  background-size:
    cover,
    40px 40px,
    40px 40px;
  position: relative;
}

.text-outside-line-full {
  color: var(--blue-deeper) !important;
  position: relative;
}
/* ปิด pseudo ของ theme เดิมที่สร้างเส้นข้างซ้ายขวา */
.text-outside-line-full::before {
  display: none !important;
}
.text-outside-line-full::after {
  content: "" !important;
  display: block !important;
  position: static !important;
  width: 60px !important;
  height: 4px !important;
  margin: 8px auto 0 !important;
  background: linear-gradient(
    90deg,
    var(--blue-primary),
    var(--blue-accent)
  ) !important;
  border-radius: 2px !important;
  border: none !important;
  top: auto !important;
  left: auto !important;
  right: auto !important;
}

.blog-post {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 2px 14px rgba(15, 61, 158, 0.09);
  overflow: hidden;
  border: 1px solid rgba(26, 86, 219, 0.1);
  transition:
    transform var(--trans),
    box-shadow var(--trans),
    border-color var(--trans);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.blog-post:hover {
  transform: translateY(-9px) scale(1.015);
  box-shadow:
    0 20px 48px var(--blue-glow),
    0 2px 8px rgba(0, 0, 0, 0.1);
  border-color: var(--blue-primary);
}
.blog-post-images {
  position: relative;
  overflow: hidden;
  background: var(--blue-deeper);
  margin-bottom: 0 !important;
}
.blog-post-images::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(26, 86, 219, 0) 40%,
    rgba(26, 86, 219, 0.55) 100%
  );
  opacity: 0;
  transition: opacity var(--trans);
  z-index: 1;
}
.blog-post:hover .blog-post-images::after {
  opacity: 1;
}
.blog-post-images img,
.blog-post-images .swiper-slide img {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}
.blog-post:hover .blog-post-images img {
  transform: scale(1.07);
}

.hover-badge {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: var(--blue-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 5px 14px;
  border-radius: 20px;
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity var(--trans),
    transform var(--trans);
  z-index: 2;
  text-transform: uppercase;
  pointer-events: none;
}
.blog-post:hover .hover-badge {
  opacity: 1;
  transform: translateY(0);
}

.blog-post .post-details {
  padding: 18px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.blog-post .post-title {
  color: var(--blue-deeper) !important;
  transition: color var(--trans);
}
.blog-post:hover .post-title {
  color: var(--blue-primary) !important;
}
.blog-post .post-details p {
  color: #374151;
  font-size: 0.88rem;
  line-height: 1.65;
}
.blog-post .separator-line-horrizontal-full {
  background: linear-gradient(
    90deg,
    var(--blue-primary),
    var(--blue-accent)
  ) !important;
  height: 2px !important;
  border-radius: 1px;
  margin: 12px 0 !important;
}

.news-section-wrap {
  background: linear-gradient(180deg, #f0f5ff 0%, #e8f0fe 100%);
  position: relative;
}
.news-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(15, 61, 158, 0.08);
  overflow: hidden;
  border: 1px solid rgba(26, 86, 219, 0.08);
  transition:
    transform var(--trans),
    box-shadow var(--trans),
    border-color var(--trans);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.news-card:hover {
  transform: translateY(-7px);
  box-shadow:
    0 18px 44px var(--blue-glow),
    0 2px 8px rgba(0, 0, 0, 0.08);
  border-color: var(--blue-primary);
}
.news-card .news-img-wrap {
  display: block;
  overflow: hidden;
  position: relative;
}
.news-card .news-img-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 50%,
    rgba(10, 37, 99, 0.45) 100%
  );
  opacity: 0;
  transition: opacity var(--trans);
}
.news-card:hover .news-img-wrap::after {
  opacity: 1;
}
.news-card .news-img-wrap img {
  display: block;
  width: 100%;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}
.news-card:hover .news-img-wrap img {
  transform: scale(1.06);
}
.news-card .news-body {
  padding: 16px 18px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-card .news-body p.alt-font a {
  color: var(--blue-deeper) !important;
  font-weight: 700;
  transition: color var(--trans);
}
.news-card:hover .news-body p.alt-font a {
  color: var(--blue-primary) !important;
}
.news-card .separator-line-horrizontal-full {
  background: linear-gradient(
    90deg,
    var(--blue-primary),
    var(--blue-accent)
  ) !important;
  height: 2px !important;
  margin: 10px 0 !important;
}
.news-card .news-date {
  color: var(--blue-primary) !important;
  font-weight: 600;
  font-size: 0.78rem;
}

.btn-deep-yellow {
  background: var(--blue-primary) !important;
  border-color: var(--blue-primary) !important;
  color: #fff !important;
  border-radius: 30px !important;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition:
    background var(--trans),
    transform var(--trans),
    box-shadow var(--trans) !important;
}
.btn-deep-yellow:hover {
  background: var(--blue-dark) !important;
  border-color: var(--blue-dark) !important;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px var(--blue-glow);
}

@media (max-width: 767px) {
  .blog-post-images img {
    height: 180px;
  }
  .blog-post:hover {
    transform: translateY(-4px) scale(1.008);
  }
}