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

html {
  scroll-behavior: smooth;
  font-size: 16px
}

body {
  font-family: 'Sarabun', sans-serif;
  background: #f8f9fa;
  color: #1e293b;
  line-height: 1.7;
  overflow-x: hidden
}

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

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

ul {
  list-style: none
}

/* ===== VARIABLES ===== */
:root {
  --primary: #1a56db;
  --primary-dark: #1e40af;
  --accent: #2563eb;
  --gold: #d97706;
  --green: #059669;
  --bg: #f8f9fa;
  --bg2: #ffffff;
  --bg3: #e9ecef;
  --card: #ffffff;
  --border: rgba(26, 86, 219, .15);
  --text: #1e293b;
  --muted: #64748b;
  --radius: 16px;
  --shadow: 0 8px 30px rgba(0, 0, 0, .10);
}

/* ===== UTILITIES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text
}

.section {
  padding: 100px 0
}

.section-header {
  text-align: center;
  margin-bottom: 64px
}

.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(26, 86, 219, .1);
  border: 1px solid rgba(26, 86, 219, .25);
  border-radius: 50px;
  font-size: .8rem;
  color: var(--primary);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 16px
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 680px;
  margin: 0 auto
}

.sub-heading {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin: 48px 0 24px;
  display: flex;
  align-items: center;
  gap: 12px
}

.sub-heading i {
  color: var(--primary)
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-family: 'Sarabun', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .3s;
  border: none
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 8px 24px rgba(26, 86, 219, .35)
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(26, 86, 219, .45)
}

.btn-outline {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, .6);
  color: #fff
}

.btn-outline:hover {
  background: rgba(255, 255, 255, .2);
  border-color: #fff
}

.btn-large {
  padding: 18px 40px;
  font-size: 1.1rem
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all .4s
}

.navbar.scrolled {
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(20px);
  padding: 10px 0;
  border-bottom: 1px solid rgba(26, 86, 219, .15);
  box-shadow: 0 2px 12px rgba(0, 0, 0, .08)
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff
}

.logo-th {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  color: #fff
}

.navbar.scrolled .logo-th {
  color: #1e40af;
}

.logo-en {
  display: block;
  font-size: .65rem;
  color: var(--primary);
  letter-spacing: .1em
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px
}

.nav-link {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: .9rem;
  color: rgba(255, 255, 255, .85);
  transition: all .3s
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, .15)
}

.navbar.scrolled .nav-link {
  color: var(--muted)
}

.navbar.scrolled .nav-link:hover {
  color: var(--primary);
  background: rgba(26, 86, 219, .08)
}

.nav-btn {
  padding: 10px 22px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 50px;
  font-size: .9rem;
  font-weight: 600;
  transition: all .3s
}

.nav-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(26, 86, 219, .35)
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: all .3s;
  border-radius: 2px
}

.navbar.scrolled .hamburger span {
  background: var(--text)
}

/* Complaint link — subtle amber outlined pill */
.nav-complaint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px !important;
  border-radius: 50px !important;
  border: 1.5px solid rgba(255, 255, 255, .45);
  color: rgba(255, 255, 255, .9) !important;
  font-size: .85rem !important;
  font-weight: 600;
  letter-spacing: .01em;
  transition: all .3s !important;
  background: transparent !important;
}

.nav-complaint i {
  font-size: .8rem;
  opacity: .85
}

.nav-complaint:hover {
  border-color: #f59e0b !important;
  color: #fbbf24 !important;
  background: rgba(245, 158, 11, .12) !important;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, .15);
}

/* Scrolled state */
.navbar.scrolled .nav-complaint {
  border-color: #d97706;
  color: #b45309 !important;
  background: rgba(245, 158, 11, .06) !important;
}

.navbar.scrolled .nav-complaint:hover {
  border-color: #f59e0b !important;
  color: #92400e !important;
  background: rgba(245, 158, 11, .14) !important;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, .12);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, .88) 0%, rgba(26, 86, 219, .35) 60%, rgba(30, 64, 175, .2) 100%)
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 120px 24px 60px;
  max-width: 900px;
  margin: 0 auto
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, .2);
  border: 1px solid rgba(255, 255, 255, .4);
  border-radius: 50px;
  font-size: .85rem;
  color: #fff;
  margin-bottom: 28px
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 900;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 12px
}

.hero-subtitle {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, .7);
  margin-bottom: 12px;
  font-weight: 500;
  letter-spacing: .05em
}

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, .7);
  margin-bottom: 36px
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap
}

.stat {
  text-align: center
}

.stat-num {
  display: block;
  font-size: 1.8rem;
  font-weight: 900;
  color: #fff;
  font-weight: 900
}

.stat-label {
  font-size: .8rem;
  color: rgba(255, 255, 255, .75)
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, .25)
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1
}

.hero-scroll a {
  color: rgba(255, 255, 255, .5);
  font-size: 1.2rem;
  animation: bounce 2s infinite
}

@keyframes bounce {

  0%,
  100% {
    transform: translateY(0)
  }

  50% {
    transform: translateY(8px)
  }
}

/* ===== ABOUT ===== */
.about-section {
  background: var(--bg2)
}

.about-highlight {
  background: linear-gradient(135deg, rgba(26, 86, 219, .07), rgba(37, 99, 235, .07));
  border: 1px solid rgba(26, 86, 219, .18);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 48px;
  display: flex;
  flex-direction: column;
  gap: 8px
}

.highlight-label {
  font-size: .85rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .05em;
  display: flex;
  align-items: center;
  gap: 8px
}

.about-highlight p {
  font-size: 1.1rem;
  color: var(--text);
  font-weight: 500
}

.year-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 32px
}

.year-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all .3s;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .06)
}

.year-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark))
}

.year-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(26, 86, 219, .15);
  border-color: var(--primary)
}

.year-num {
  font-size: .8rem;
  color: var(--muted);
  margin-bottom: 16px;
  font-weight: 600
}

.year-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text
}

.year-skill {
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5
}

.about-note {
  background: rgba(5, 150, 105, .08);
  border: 1px solid rgba(5, 150, 105, .2);
  border-radius: 12px;
  padding: 16px 24px;
  font-size: .95rem;
  color: var(--muted);
  display: flex;
  align-items: flex-start;
  gap: 10px
}

.about-note i {
  color: var(--green);
  flex-shrink: 0;
  margin-top: 3px
}

/* ===== VISION ===== */
.vision-section {
  background: var(--bg)
}

.mission-list {
  display: flex;
  flex-direction: column;
  gap: 24px
}

.mission-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all .3s;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .05)
}

.mission-item:hover {
  border-color: var(--primary);
  transform: translateX(6px);
  box-shadow: 0 8px 24px rgba(26, 86, 219, .12)
}

.mission-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  flex-shrink: 0
}

.mission-body {
  flex: 1
}

.mission-num {
  font-size: .75rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .15em;
  margin-bottom: 6px
}

.mission-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px
}

.mission-body p {
  color: var(--muted);
  font-size: .95rem
}

/* ===== FACULTY ===== */
.faculty-section {
  background: var(--bg2)
}

.faculty-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px
}

.faculty-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .06)
}

.faculty-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(26, 86, 219, .15);
  border-color: var(--primary)
}

.faculty-card.head {
  grid-column: span 3;
  display: flex;
  align-items: center;
  gap: 32px;
  text-align: left;
  padding: 32px
}

.faculty-img-wrap {
  position: relative;
  flex-shrink: 0
}

.faculty-card:not(.head) .faculty-img-wrap {
  padding: 24px 24px 0
}

.faculty-card.head .faculty-img-wrap img {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary)
}

.faculty-card:not(.head) img,
.faculty-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto;
  object-fit: cover;
  border: 2px solid var(--border)
}

.faculty-avatar {
  background: var(--bg3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--primary)
}

.head-badge {
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--gold), #d97706);
  color: #fff;
  font-size: .7rem;
  padding: 4px 12px;
  border-radius: 50px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 4px
}

.faculty-card.head .head-badge {
  left: 0;
  transform: none;
  bottom: 0
}

.faculty-info {
  padding: 16px
}

.faculty-card.head .faculty-info {
  flex: 1
}

.faculty-info h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px
}

.faculty-info p {
  font-size: .85rem;
  color: var(--primary)
}

/* ===== CURRICULUM ===== */
.curriculum-section {
  background: var(--bg)
}

/* --- Tab Navigation --- */
.curr-tab-nav {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: 48px;
  background: #fff;
  border-radius: 20px;
  padding: 8px;
  box-shadow: 0 4px 24px rgba(26, 86, 219, .10), 0 1px 4px rgba(0, 0, 0, .06);
  border: 1px solid rgba(26, 86, 219, .12);
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

.curr-tab-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 24px;
  border-radius: 14px;
  font-family: 'Sarabun', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  transition: all .3s cubic-bezier(.25, .46, .45, .94);
  position: relative;
  white-space: nowrap;
  flex-wrap: nowrap;
}

.curr-tab-btn i {
  font-size: .95rem;
  flex-shrink: 0
}

.curr-tab-btn:not(.active) {
  border-color: #d1d5db;
  color: #6b7280;
}

.curr-tab-btn:not(.active):hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(26, 86, 219, .04);
}

.curr-tab-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(26, 86, 219, .35);
  border-color: transparent;
}

.curr-tab-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: rgba(255, 255, 255, .25);
  border: 1px solid rgba(255, 255, 255, .4);
  border-radius: 50px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
}

.curr-tab-btn:not(.active) .curr-tab-badge {
  background: rgba(26, 86, 219, .08);
  border-color: rgba(26, 86, 219, .2);
  color: var(--primary);
}

/* --- Tab Panels --- */
.curr-tab-panel {
  animation: tabFadeIn .35s ease;
}

.curr-tab-panel[hidden] {
  display: none;
}

@keyframes tabFadeIn {
  from {
    opacity: 0;
    transform: translateY(12px)
  }

  to {
    opacity: 1;
    transform: translateY(0)
  }
}

/* --- Curriculum inner elements --- */
.degree-box {
  display: flex;
  align-items: center;
  gap: 24px;
  background: linear-gradient(135deg, rgba(26, 86, 219, .07), rgba(37, 99, 235, .07));
  border: 1px solid rgba(26, 86, 219, .2);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin-bottom: 32px
}

.degree-icon {
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0
}

.degree-label {
  font-size: .8rem;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: .05em;
  margin-bottom: 6px
}

.degree-detail h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text)
}

.degree-abbr {
  color: var(--primary)
}

.tuition-highlight {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 48px
}

.tuition-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--border)
}

.tuition-card i {
  font-size: 2rem;
  color: var(--primary)
}

.tuition-card.total i {
  color: var(--gold)
}

.tuition-amount {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--text)
}

.tuition-label {
  font-size: .85rem;
  color: var(--muted)
}

.structure-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 48px
}

.structure-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: all .3s
}

.structure-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary)
}

.structure-card.total-card {
  background: linear-gradient(135deg, rgba(16, 185, 129, .1), rgba(99, 102, 241, .1));
  border-color: rgba(16, 185, 129, .3)
}

.sc-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 12px;
  background: rgba(26, 86, 219, .08);
  color: var(--c, var(--primary))
}

.sc-label {
  font-size: .9rem;
  color: var(--muted);
  margin-bottom: 4px
}

.sc-credits {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 12px
}

.sc-bar {
  height: 4px;
  background: rgba(0, 0, 0, .07);
  border-radius: 4px;
  overflow: hidden
}

.sc-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1s ease
}

.career-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 48px
}

.career-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  font-size: .95rem;
  transition: all .3s
}

.career-item:hover {
  border-color: var(--primary);
  transform: translateX(4px)
}

.career-item i {
  font-size: 1.2rem;
  color: var(--primary);
  flex-shrink: 0
}

.download-cta {
  text-align: center;
  background: linear-gradient(135deg, rgba(26, 86, 219, .06), rgba(37, 99, 235, .06));
  border: 1px solid rgba(26, 86, 219, .15);
  border-radius: var(--radius);
  padding: 48px;
  margin-top: 16px
}

.download-cta p {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 20px
}

/* ===== CONTACT ===== */
.contact-section {
  background: var(--bg2)
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(26, 86, 219, .1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 3px
}

.contact-label {
  font-size: .75rem;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: .05em;
  margin-bottom: 4px
}

.contact-value {
  font-size: .95rem;
  color: var(--text)
}

.social-row {
  display: flex;
  gap: 12px;
  margin-top: 8px
}

.social-btn {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all .3s
}

.social-btn.fb {
  background: #1877f2;
  color: #fff
}

.social-btn.line {
  background: #06c755;
  color: #fff
}

.social-btn.yt {
  background: #ff0000;
  color: #fff
}

.social-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, .3)
}

.contact-map {
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 380px;
  border: 1px solid var(--border)
}

.contact-map iframe {
  height: 100%;
  min-height: 380px
}

/* ===== VISITOR COUNTER ===== */
.visitor-section {
  background: #f1f5f9;
  padding: 40px 0;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.visitor-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
  font-size: .85rem;
  font-weight: 700;
  color: #64748b;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.visitor-header-icon {
  color: var(--primary);
  font-size: 1rem;
}

.visitor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 780px;
  margin: 0 auto;
}

.visitor-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 24px 16px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .05);
  transition: transform .3s, box-shadow .3s;
}

.visitor-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 28px rgba(26, 86, 219, .12);
  border-color: rgba(26, 86, 219, .25);
}

.visitor-icon {
  width: 40px;
  height: 40px;
  background: rgba(26, 86, 219, .09);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  color: var(--primary);
  margin: 0 auto 14px;
}

.visitor-num {
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
  font-family: 'Inter', 'Sarabun', sans-serif;
  letter-spacing: -.02em;
}

.visitor-label {
  font-size: .95rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 2px;
}

.visitor-sublabel {
  font-size: .75rem;
  color: #94a3b8;
  font-family: 'Inter', sans-serif;
}

@media(max-width:600px) {
  .visitor-grid {
    grid-template-columns: repeat(2, 1fr)
  }

  .visitor-num {
    font-size: 1.5rem
  }
}

@media(max-width:360px) {
  .visitor-grid {
    grid-template-columns: 1fr 1fr
  }
}

/* ===== FOOTER ===== */
.footer {
  background: #1e293b;
  border-top: 1px solid rgba(255, 255, 255, .08)
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 64px 24px
}

.footer-logo {
  font-size: 1.3rem;
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px
}

.footer-logo i {
  color: var(--primary)
}

.footer-brand p {
  font-size: .9rem;
  color: var(--muted);
  line-height: 1.8
}

.footer-links {
  display: flex;
  gap: 48px
}

.footer-col h4 {
  font-size: .85rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 16px
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px
}

.footer-col a {
  font-size: .9rem;
  color: var(--muted);
  transition: color .3s
}

.footer-col a:hover {
  color: #fff
}

.footer-admin-link {
  font-size: .78rem !important;
  color: rgba(255, 255, 255, .25) !important;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-top: 4px;
  border-top: 1px solid rgba(255, 255, 255, .07);
  padding-top: 10px
}

.footer-admin-link i {
  font-size: .72rem;
  opacity: .7
}

.footer-admin-link:hover {
  color: #fbbf24 !important
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 24px;
  text-align: center;
  font-size: .8rem;
  color: rgba(255, 255, 255, .45)
}

/* ===== CHAT WIDGET ===== */
.chat-widget {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px
}

.chat-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  box-shadow: 0 8px 30px rgba(26, 86, 219, .4);
  transition: all .3s
}

.chat-toggle:hover {
  transform: scale(1.08)
}

.chat-close-icon {
  display: none
}

.chat-widget.open .chat-open-icon {
  display: none
}

.chat-widget.open .chat-close-icon {
  display: block
}

.chat-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  width: 300px;
  overflow: hidden;
  box-shadow: var(--shadow);
  display: none;
  flex-direction: column
}

.chat-widget.open .chat-box {
  display: flex
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark))
}

.chat-avatar {
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, .2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  color: #fff
}

.chat-name {
  font-weight: 700;
  color: #fff;
  font-size: .9rem
}

.chat-status {
  font-size: .75rem;
  color: rgba(255, 255, 255, .8);
  display: flex;
  align-items: center;
  gap: 5px
}

.online-dot {
  width: 6px;
  height: 6px;
  background: #6ee7b7;
  border-radius: 50%;
  animation: pulse 2s infinite
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1
  }

  50% {
    opacity: .5
  }
}

.chat-messages {
  padding: 16px;
  min-height: 120px;
  max-height: 260px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px
}

.msg {
  padding: 10px 14px;
  border-radius: 14px;
  font-size: .85rem;
  max-width: 85%;
  line-height: 1.5;
  word-break: break-word
}

.msg.bot {
  background: rgba(26, 86, 219, .08);
  border: 1px solid rgba(26, 86, 219, .15);
  color: var(--text);
  align-self: flex-start;
  border-radius: 4px 14px 14px 14px
}

.msg.user {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  align-self: flex-end;
  border-radius: 14px 14px 4px 14px
}

.msg-time {
  font-size: .68rem;
  opacity: .55;
  margin-top: 3px;
  display: block
}

.msg.user .msg-time {
  text-align: right
}

/* Unread badge on toggle button */
.chat-unread-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #ef4444;
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  display: flex !important;
  align-items: center;
  justify-content: center;
  border: 2px solid #fff;
  animation: badgePop .3s ease;
}

@keyframes badgePop {
  from {
    transform: scale(0)
  }

  to {
    transform: scale(1)
  }
}

/* Typing indicator */
.chat-typing {
  padding: 6px 18px 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.chat-typing span {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(26, 86, 219, .35);
  animation: typingDot 1.4s infinite;
}

.chat-typing span:nth-child(2) {
  animation-delay: .2s
}

.chat-typing span:nth-child(3) {
  animation-delay: .4s
}

@keyframes typingDot {

  0%,
  80%,
  100% {
    transform: scale(.6);
    opacity: .4
  }

  40% {
    transform: scale(1);
    opacity: 1
  }
}

.chat-input-row {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border)
}

.chat-input-row input {
  flex: 1;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--text);
  font-family: 'Sarabun', sans-serif;
  font-size: .85rem;
  outline: none
}

.chat-input-row input:focus {
  border-color: var(--primary)
}

.chat-input-row button {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: none;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
  font-size: .85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0
}


/* ===== ANIMATIONS ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0)
}

/* ===== STUDENT WORKS GALLERY ===== */
.student-works-section {
  background: var(--bg)
}

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

.work-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3/4;
  box-shadow: 0 8px 30px rgba(0, 0, 0, .4);
  cursor: pointer
}

.work-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .55s cubic-bezier(.25, .46, .45, .94)
}

.work-card:hover img {
  transform: scale(1.08)
}

.work-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(26, 86, 219, .9) 0%, rgba(15, 23, 42, .95) 100%);
  opacity: 0;
  transition: opacity .4s ease;
  display: flex;
  align-items: flex-end;
  padding: 28px
}

.work-card:hover .work-overlay {
  opacity: 1
}

.work-overlay-inner {
  transform: translateY(16px);
  transition: transform .4s ease;
  width: 100%
}

.work-card:hover .work-overlay-inner {
  transform: translateY(0)
}

.work-tag {
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, .15);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 14px
}

.work-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.3
}

.work-desc {
  font-size: .85rem;
  color: rgba(255, 255, 255, .78);
  line-height: 1.6
}

/* ===== ACTIVITIES SLIDER ===== */
.activities-section {
  background: var(--bg2)
}

.slider-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
  border-radius: 20px;
  overflow: hidden
}

.slider-viewport {
  flex: 1;
  overflow: hidden;
  border-radius: 20px
}

.slider-track {
  display: flex;
  transition: transform .55s cubic-bezier(.25, .46, .45, .94)
}

.slide {
  min-width: 100%;
  position: relative
}

.slide-img-wrap {
  position: relative;
  height: 480px;
  overflow: hidden
}

.slide-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block
}

.slide-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 35%, rgba(10, 11, 20, .98) 100%)
}

.slide-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 36px 44px;
  display: flex;
  flex-direction: column;
  gap: 8px
}

.slide-num {
  font-size: .75rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: .2em;
  text-transform: uppercase
}

.slide-caption h3 {
  font-size: 1.7rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2
}

.slide-caption p {
  font-size: .95rem;
  color: rgba(255, 255, 255, .72);
  max-width: 520px;
  line-height: 1.7
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(10, 11, 20, .7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .15);
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .3s;
  flex-shrink: 0
}

.slider-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(99, 102, 241, .5);
  transform: translateY(-50%) scale(1.08)
}

.slider-prev {
  left: 20px
}

.slider-next {
  right: 20px
}

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

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(26, 86, 219, .25);
  border: none;
  cursor: pointer;
  transition: all .3s;
  padding: 0
}

.dot.active {
  width: 32px;
  border-radius: 6px;
  background: var(--primary)
}

.dot:hover:not(.active) {
  background: rgba(26, 86, 219, .5)
}

/* ===== RESPONSIVE ===== */
@media(max-width:900px) {
  .year-cards {
    grid-template-columns: repeat(2, 1fr)
  }

  .faculty-grid {
    grid-template-columns: 1fr 1fr
  }

  .faculty-card.head {
    grid-column: span 2
  }

  .contact-grid {
    grid-template-columns: 1fr
  }

  .footer-inner {
    grid-template-columns: 1fr
  }

  .career-grid {
    grid-template-columns: 1fr 1fr
  }

  .tuition-highlight {
    grid-template-columns: 1fr
  }

  .works-grid {
    grid-template-columns: repeat(2, 1fr)
  }

  .slide-img-wrap {
    height: 380px
  }

  .slide-caption {
    padding: 24px 32px
  }

  .slide-caption h3 {
    font-size: 1.35rem
  }

  .curr-tab-nav {
    flex-direction: column;
    gap: 8px
  }

  .curr-tab-btn {
    font-size: .9rem;
    padding: 14px 16px
  }
}

@media(max-width:768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(10, 11, 20, .97);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border)
  }

  .nav-links.open {
    display: flex
  }

  .hamburger {
    display: flex
  }

  .faculty-grid {
    grid-template-columns: 1fr
  }

  .faculty-card.head {
    grid-column: span 1;
    flex-direction: column;
    text-align: center
  }

  .structure-cards {
    grid-template-columns: 1fr
  }

  .career-grid {
    grid-template-columns: 1fr
  }

  .footer-links {
    flex-direction: column;
    gap: 32px
  }
}

@media(max-width:480px) {
  .hero-actions {
    flex-direction: column;
    align-items: center
  }

  .year-cards {
    grid-template-columns: 1fr 1fr
  }

  .works-grid {
    grid-template-columns: 1fr 1fr
  }

  .slide-img-wrap {
    height: 300px
  }

  .slide-caption {
    padding: 20px 24px
  }

  .slider-btn {
    width: 40px;
    height: 40px;
    font-size: .85rem
  }

  .slider-prev {
    left: 10px
  }

  .slider-next {
    right: 10px
  }

  .curr-tab-btn {
    font-size: .82rem;
    gap: 6px
  }

  .curr-tab-badge {
    display: none
  }
}