/* ===================================================
   IoTE NEWS - RESPONSIVE STYLESHEET
   Color Palette:
     Navy:   #013A5D (rgba(1,58,93,1))
     Orange: #F36F21 (rgba(243,111,33,1))
     BG:     #F8FAFC
     White:  #FFFFFF
   =================================================== */

/* ---------- RESET & BASE ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #1a1a2e;
  background: #F8FAFC;
  overflow-x: hidden;
  padding-top: 69px;
}

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

a {
  text-decoration: none;
  color: inherit;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 60px 0;
}

/* ===== NAVBAR (ก็อปปี้จาก Iote_Main_Web) ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: #FFFFFF;
  box-shadow: 0 1px 8px rgba(0,0,0,0.10);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 32px; height: 64px;
}
.navbar-left { display: flex; align-items: center; gap: 20px; }
.navbar-left img { height: 80px; width: auto; }

.logo-info { font-size: 11px; color: #4a5568; line-height: 1.5; }
.logo-info div { display: flex; align-items: center; gap: 4px; }
.logo-info a { color: #4a5568; text-decoration: none; }

.nav-links { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-family: 'Sarabun', sans-serif; font-weight: 500; font-size: 15px;
  color: #013A5D; text-decoration: none; transition: color .2s;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover, .nav-links a.active { color: #F36F21; border-bottom-color: #F36F21; }

.nav-links li { position: relative; list-style: none; }
.nav-links li.has-dropdown > a::after {
  content: ' ▾'; font-size: 10px; display: inline-block; transition: transform .2s;
}
.nav-links li.has-dropdown:hover > a::after { transform: rotate(180deg); }

/* Dropdown เมนู */
.dropdown {
  display: none;
  position: absolute; top: calc(100% + 8px); left: 0;
  background: #FFFFFF;
  border: 1px solid #e8ecf0;
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(1,58,93,0.13);
  min-width: 280px;
  overflow: hidden;
  z-index: 999;
}
.nav-links li.has-dropdown:hover .dropdown { display: block; }
.dropdown a {
  display: block;
  padding: 13px 20px;
  font-size: 14px; font-family: 'Sarabun', sans-serif;
  color: #013A5D; text-decoration: none;
  transition: background .15s, color .15s, padding-left .15s;
  white-space: nowrap;
}
.dropdown a:not(:last-child) { border-bottom: 1px solid #f0f4f8; }
.dropdown a:hover { background: #F8FAFC; color: #F36F21; padding-left: 26px; border-bottom: none; }
.dropdown-label {
  font-size: 10px; letter-spacing: 2px; text-transform: uppercase;
  color: #0584AF; font-family: 'Kanit', sans-serif; font-weight: 600;
  padding: 10px 20px 4px; display: block; background: #F8FAFC;
  border-bottom: 1px solid #e8ecf0;
}

/* ===== HAMBURGER ===== */
.hamburger {
  display: none;
  flex-direction: column; justify-content: center; align-items: center;
  gap: 5px; width: 40px; height: 40px;
  background: none; border: none; cursor: pointer; padding: 4px;
  border-radius: 8px; transition: background .2s;
}
.hamburger:hover { background: #F8FAFC; }
.hamburger span {
  display: block; width: 24px; height: 2.5px;
  background: #013A5D; border-radius: 4px;
  transition: all .3s ease;
  transform-origin: center;
}

/* ---------- SECTION HEADER ---------- */
.section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 40px;
}

.section-icon {
  width: 42px;
  height: 42px;
  color: #F36F21;
  flex-shrink: 0;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: #013A5D;
  letter-spacing: -0.5px;
}

/* ---------- NEWS FLASH-CARD SLIDER ---------- */
.news-section {
  background: #F8FAFC;
  padding-top: 40px;
}

/* stacked news list */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ensure cards occupy full width outside slider context */
.news-list .news-card {
  width: 100%;
  min-width: auto;
}

.news-slider-wrapper {
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  padding: 0 68px;
}

.news-slider-wrapper .slider-btn-prev {
  position: absolute;
  left: 0;
  z-index: 2;
}

.news-slider-wrapper .slider-btn-next {
  position: absolute;
  right: 0;
  z-index: 2;
}

.news-slider-viewport {
  flex: 1;
  overflow: hidden;
  border-radius: 0;
}

.news-slider-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.news-card {
  min-width: 100%;
  padding: 8px;
  flex-shrink: 0;
}

.news-card-inner {
  display: flex;
  align-items: stretch;
  background: #fff;
  border: 3px solid #F36F21;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(1, 58, 93, 0.06);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  cursor: pointer;
}

.news-card-inner:hover {
  box-shadow: 0 8px 32px rgba(243, 111, 33, 0.15);
  transform: translateY(-2px);
}

.news-card-thumb {
  width: 200px;
  min-height: 180px;
  flex-shrink: 0;
  padding: 20px;
}

.thumb-placeholder {
  width: 100%;
  height: 100%;
  min-height: 140px;
  background: linear-gradient(135deg, #d1d5db, #9ca3af);
  border-radius: 20px;
  animation: shimmer 2s infinite;
  background-size: 200% 100%;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

.news-card-content {
  flex: 1;
  padding: 28px 28px 28px 12px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
}

.news-tag {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 800;
  color: #fff;
  width: fit-content;
  letter-spacing: 0.5px;
}

.tag-announcement {
  background: #F36F21;
}

.tag-event {
  background: #F36F21;
}

.tag-achievement {
  background: #F36F21;
}

.tag-partnership {
  background: #F36F21;
}

.tag-seminar {
  background: #F36F21;
}

.news-time {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #6b7280;
  font-size: 14px;
  font-weight: 300;
}

.news-time svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.news-excerpt {
  color: #374151;
  font-size: 15px;
  line-height: 1.5;
}

/* Slider Buttons */
.slider-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 3px solid #013A5D;
  background: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s ease;
  box-shadow: 0 2px 12px rgba(1, 58, 93, 0.1);
}

.slider-btn:hover {
  background: #013A5D;
  transform: scale(1.08);
  box-shadow: 0 4px 20px rgba(1, 58, 93, 0.25);
}

.slider-btn:hover svg {
  stroke: #fff;
}

.slider-btn:active {
  transform: scale(0.95);
}

.slider-btn svg {
  width: 22px;
  height: 22px;
  stroke: #013A5D;
  transition: stroke 0.3s ease;
}

/* Slider Dots */
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}

.slider-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #d1d5db;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
}

.slider-dot.active {
  background: #F36F21;
  transform: scale(1.2);
  box-shadow: 0 0 8px rgba(243, 111, 33, 0.4);
}

.slider-dot:hover:not(.active) {
  background: #9ca3af;
  transform: scale(1.1);
}

/* View All Button */
.view-all-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 48px auto 0;
  padding: 16px 40px;
  border: 3px solid #013A5D;
  border-radius: 50px;
  font-size: 22px;
  font-weight: 300;
  color: #013A5D;
  background: #fff;
  transition: all 0.3s ease;
  text-align: center;
  /* center the button */
  display: flex;
  justify-content: center;
  max-width: 320px;
}

.view-all-btn svg {
  width: 24px;
  height: 24px;
  transition: transform 0.3s ease;
}

.view-all-btn:hover {
  background: #013A5D;
  color: #fff;
  box-shadow: 0 6px 24px rgba(1, 58, 93, 0.25);
  transform: translateY(-2px);
}

.view-all-btn:hover svg {
  stroke: #fff;
  transform: translateX(4px);
}

/* ---------- TCAS SECTION ---------- */
.tcas-section {
  background: #fff;
}

.tcas-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tcas-card {
  background: #fff;
  border: 3px solid #F36F21;
  border-radius: 24px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 260px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.tcas-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #F36F21, #ff8f4c);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.tcas-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(243, 111, 33, 0.15);
}

.tcas-card:hover::before {
  opacity: 1;
}

.tcas-active {
  border-color: #F36F21;
}

.tcas-card-top {
  flex: 1;
}

.tcas-round {
  font-size: 28px;
  font-weight: 600;
  color: #013A5D;
  margin-bottom: 8px;
}

.tcas-type {
  font-size: 24px;
  font-weight: 600;
  color: #013A5D;
}

.tcas-card-bottom {
  margin-top: 20px;
}

.tcas-date {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 14px;
  color: #013A5D;
  font-weight: 300;
}

.tcas-date svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: #013A5D;
}

.tcas-apply-btn {
  display: block;
  width: 100%;
  padding: 14px;
  text-align: center;
  background: #F36F21;
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  border-radius: 32px;
  transition: all 0.3s ease;
}

.tcas-apply-btn:hover {
  background: #e05f15;
  box-shadow: 0 4px 16px rgba(243, 111, 33, 0.4);
  transform: translateY(-1px);
}

.tcas-coming-soon {
  display: block;
  width: 100%;
  padding: 14px;
  text-align: center;
  background: #F8FAFC;
  color: #013A5D;
  font-size: 18px;
  font-weight: 600;
  border-radius: 32px;
}

/* ---------- CAMPS SECTION ---------- */
.camps-section {
  background: #F8FAFC;
  padding-bottom: 80px;
}

.camps-title {
  font-size: 42px;
  font-weight: 800;
  color: #013A5D;
  text-align: center;
  margin-bottom: 48px;
  letter-spacing: -0.5px;
}

.camps-slider-wrapper {
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  padding: 0 68px;
}

.camps-slider-wrapper .slider-btn-prev {
  position: absolute;
  left: 0;
  z-index: 2;
}

.camps-slider-wrapper .slider-btn-next {
  position: absolute;
  right: 0;
  z-index: 2;
}

.camps-slider-viewport {
  flex: 1;
  overflow: hidden;
  border-radius: 0;
}

.camps-slider-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.camp-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  flex-shrink: 0;
  padding: 10px;
}

.camp-card:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(242, 101, 34, 0.2);
    z-index: 10;
}

.camp-card-image {
  border: 3px solid #F36F21;
  border-radius: 24px;
  overflow: hidden;
  background: #fff;
}

.camp-placeholder {
  width: 100%;
  padding-top: 65%;
  background: linear-gradient(135deg, #e5e7eb, #d1d5db);
  border-radius: 20px;
  margin: 8px;
  width: calc(100% - 16px);
}

.camp-card-body {
  padding: 16px 8px;
}

.camp-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: #013A5D;
  margin-bottom: 6px;
}

.camp-card-body p {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.5;
}

/* ---------- FOOTER ---------- */
.footer {
  background: #013A5D;
  padding: 30px 0 32px;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.footer-logo {
  height: 80px;
  width: auto;
  object-fit: contain;
}

.footer-tagline {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  font-weight: 400;
  max-width: 600px;
  line-height: 1.6;
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
}

/* ===================================================
   RESPONSIVE BREAKPOINTS
   =================================================== */

/* ---------- TABLET (max-width: 1024px) ---------- */
@media (max-width: 1024px) {
  .navbar-info {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: #fff;
    flex-direction: column;
    padding: 100px 32px 40px;
    gap: 4px;
    box-shadow: -4px 0 32px rgba(0, 0, 0, 0.15);
    transition: right 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 105;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-link {
    font-size: 18px;
    padding: 12px 16px;
    width: 100%;
  }

  .section-title {
    font-size: 26px;
  }

  .tcas-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .camps-title {
    font-size: 32px;
  }

  .view-all-btn {
    font-size: 18px;
    padding: 14px 32px;
  }
}

/* ---------- MOBILE (max-width: 768px) ---------- */
@media (max-width: 768px) {
  .section {
    padding: 40px 0;
  }

  .navbar-inner {
    height: 64px;
  }

  .logo-img {
    height: 90px;
  }

  .section-header {
    margin-bottom: 28px;
  }

  .section-icon {
    width: 32px;
    height: 32px;
  }

  .section-title {
    font-size: 22px;
  }

  /* News cards on mobile - stack thumb & content */
  .news-card-inner {
    flex-direction: column;
  }

  .news-card-thumb {
    width: 100%;
    min-height: 140px;
    padding: 16px;
  }

  .news-card-content {
    padding: 20px;
  }

  .news-tag {
    font-size: 14px;
    padding: 6px 16px;
  }

  /* Slider buttons smaller */
  .slider-btn {
    width: 40px;
    height: 40px;
  }

  .slider-btn svg {
    width: 18px;
    height: 18px;
  }

  .slider-dots {
    margin-top: 20px;
  }

  .slider-dot {
    width: 11px;
    height: 11px;
  }

  /* TCAS grid 1 column */
  .tcas-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .tcas-card {
    min-height: auto;
    padding: 24px 20px;
    flex-direction: row;
    align-items: center;
    gap: 16px;
  }

  .tcas-card-top {
    flex: 1;
  }

  .tcas-card-bottom {
    margin-top: 0;
    text-align: right;
  }

  .tcas-round {
    font-size: 22px;
  }

  .tcas-type {
    font-size: 18px;
  }

  .tcas-apply-btn,
  .tcas-coming-soon {
    font-size: 15px;
    padding: 10px 20px;
    width: auto;
    display: inline-block;
  }

  .camps-title {
    font-size: 24px;
    margin-bottom: 32px;
  }

  .view-all-btn {
    font-size: 16px;
    padding: 12px 28px;
    max-width: 260px;
  }

  .footer-logo {
    height: 180px;
  }

  .footer-tagline {
    font-size: 14px;
  }

  .footer-copyright {
    font-size: 12px;
  }
}

/* ---------- SMALL MOBILE (max-width: 480px) ---------- */
@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 32px 0;
  }

  .section-title {
    font-size: 20px;
  }

  .news-slider-wrapper {
    gap: 8px;
  }

  .slider-btn {
    width: 34px;
    height: 34px;
    border-width: 2px;
  }

  .slider-btn svg {
    width: 14px;
    height: 14px;
  }

  .news-card-content {
    padding: 16px;
  }

  .news-tag {
    font-size: 12px;
    padding: 5px 12px;
  }

  .news-time {
    font-size: 12px;
  }

  .news-excerpt {
    font-size: 13px;
  }

  .camps-title {
    font-size: 20px;
    margin-bottom: 24px;
  }

  .camp-card-body h3 {
    font-size: 15px;
  }

  .camp-card-body p {
    font-size: 12px;
  }

  .view-all-btn {
    font-size: 14px;
    padding: 10px 24px;
    max-width: 220px;
  }
}