/* =========================
   RESET
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', sans-serif;
  background: #f6f6f6;
  color: #333;
}

/* =========================
   HEADER
========================= */
.header-top {
  background: #8B0000;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 40px 80px;
  position: relative;
  flex-wrap: wrap;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 30px;
}

.logo {
  height: 100px;
  width: auto;
  transform: translateY(10px);
}

.header-title {
  font-family: 'Inria Serif', serif;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.2;
}

.header-right {
  position: absolute;
  top: 15px;
  right: 40px;
  font-size: 14px;
  text-align: right;
}

/* =========================
   NAVIGATION
========================= */
nav {
  background: linear-gradient(90deg, #5c0000, #8B0000, #5c0000);
  padding: 22px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav ul {
  display: flex;
  justify-content: center;
  align-items: center;
  list-style: none;
  gap: 90px;
  flex-wrap: wrap;
}

nav ul li {
  position: relative;
  font-weight: 500;
  font-size: 18px;
  letter-spacing: 1px;
}

nav ul li a {
  text-decoration: none;
  color: white;
  transition: 0.3s;
}

nav ul li a:hover {
  color: #ffe5e5;
}

nav ul li::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 0%;
  height: 2px;
  background: #ffffff;
  transition: 0.3s;
}

nav ul li:hover::after {
  width: 100%;
}

/* =========================
   DROPDOWN
========================= */
.dropdown {
  position: relative;
  cursor: pointer;
  color: white;
}

.dropdown-content {
  position: absolute;
  top: 55px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(255, 255, 255, 0.97);
  border-radius: 12px;
  padding: 12px 0;
  min-width: 260px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
}

.dropdown-content a {
  display: block;
  padding: 14px 22px;
  font-size: 16px;
  font-weight: 600;
  color: #111;
  text-decoration: none;
  transition: 0.3s;
  border-left: 4px solid transparent;
}

.dropdown-content a:hover {
  background: #f3f3f3;
  border-left: 4px solid #8B0000;
  color: #000;
  padding-left: 28px;
}

.dropdown:hover .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
} 

:root {
    --primary-red: #8B0000;
    --light-gray: #f9f9f9;
    --border-color: #e0e0e0;
    --text-dark: #333;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    background-color: var(--light-gray);
    color: var(--text-dark);
}

.hero-section {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('myphoto/career-bg.png');
    background-size: cover;
    background-position: center;
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
}

.container {
    max-width: 1100px;
    margin: -50px auto 50px;
    padding: 0 20px;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

/* การ์ดปกติ */
.career-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

/* Hover */
.career-card:hover {
    background-color: var(--primary-red);
    color: white;
    transform: translateY(-5px);
}

.career-card h3 { margin-top: 0; font-size: 1rem; margin-bottom: 5px;}
.career-card p { font-size: 0.9rem; opacity: 0.8; }

/* (Active) */
.career-card.active {
    background-color: var(--primary-red);
    color: white;
}

/* detail */
.detail-section {
    background: white;
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.detail-header {
    background: var(--primary-red);
    color: white;
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 1.2rem;       
    font-weight: 600;        
    letter-spacing: 1px;     

}

.content-cols {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
    margin: 0 auto;      
    max-width: 1000px;   
}

.learn-more-btn {
    width: 100%;
    background: var(--primary-red);
    color: white;
    border: none;
    padding: 15px;
    margin-top: 30px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
}

.subject-list {
    list-style: none;
    padding: 0;
}

.subject-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 15px;
    font-size: 0.95rem;
    color: #444;
}

/* Bullet  */
.subject-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    font-weight: bold;
    color: #ccc;
}

.outcomes li {
    font-weight: 500;
    color: #444;
}


.outcomes li::before {
    content: "•";
    color: #ccc;               
    margin-right: 10px;        
}

/* Grid */
@media (max-width: 768px) {
    .content-cols {
        grid-template-columns: 1fr;
    }
    .grid-container {
        grid-template-columns: 1fr;
    }
}

/* ================= RESPONSIVE - TABLET ================= */
@media (max-width: 992px) {

  .main .container {
    flex-direction: column;
    text-align: center;
  }

  .image {
    margin-top: 30px;
  }

  .contact-container {
    flex-direction: column;
    gap: 40px;
    text-align: center;
  }

  nav {
    gap: 30px;
    flex-wrap: wrap;
  }

}


/* ================= RESPONSIVE - MOBILE ================= */
@media (max-width: 768px) {

  .header-top {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 25px 20px;
    gap: 15px;
  }

  .header-left {
    flex-direction: column;
    gap: 15px;
  }

  .logo {
    height: 80px;
    transform: none;
  }

  .header-title h1 {
    font-size: 18px;
  }

  .header-right {
    position: static;
    margin-top: 10px;
    text-align: center;
  }

  nav {
    padding: 15px 0;
  }

  nav ul {
    flex-direction: column;
    gap: 18px;
  }

  nav ul li {
    font-size: 16px;
  }

  .hero {
    height: 220px;
  }

  .hero h2 {
    font-size: 28px;
  }

  .container {
    width: 92%;
    margin: 40px auto;
  }

  .content-box {
    padding: 25px;
  }

  .footer-logo {
    width: 150px;
  }

  /* 1. จัดตำแหน่งกล่องให้อยู่ตรงกลาง ไม่ลอย และซ่อนไว้ก่อน */
  .dropdown-content {
    position: static !important;
    transform: none !important;
    width: 80%;
    margin: 7px auto 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 8px;
    box-shadow: none;
    padding: 10px 0;
    
    /* บังคับซ่อน เพื่อให้ JS เป็นตัวสั่งเปิดแทน */
    display: none !important; 
    opacity: 1;
    visibility: visible;
  }

  /* 2. เมื่อมีคลาส .active (ที่ JS เติมให้ตอนกด) ค่อยแสดงกล่องออกมา */
  .dropdown.active .dropdown-content {
    display: block !important;
  }
    
  /* ซ่อน outline สีฟ้าๆ ที่อาจจะขึ้นมาตอนกดในบางเบราว์เซอร์ */
  .dropdown {
    outline: none;
  }
  .dropdown-content div, 
  .dropdown-content a {
    font-size: 14px; /* ลดขนาดตัวอักษรลง */
    padding: 10px 16px; /* ลด Padding ลงนิดหน่อยเพื่อให้กล่องดูพอดีขึ้น */
  }

}


/* ================= RESPONSIVE - SMALL MOBILE ================= */
@media (max-width: 480px) {

  .hero h2 {
    font-size: 22px;
  }

  .section-title {
    font-size: 18px;
    padding: 10px 18px;
  }

  .content-box {
    font-size: 14px;
    line-height: 1.6;
  }

}

/* ================= FOOTER ================= */
footer {
    background: #222;
    color: white;
    text-align: center;
    padding: 20px;
}

.footer {
    background: url("myphoto/building.png") center/cover no-repeat;
    position: relative;
    color: white;
    margin-top: 20px;
}

/* overlay dark */
.footer::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.65); 
}

.footer-overlay {
    position: relative;
    z-index: 1;
    padding: 10px 10px 10px;
    text-align: center;
}

/* logo */
.footer-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 80px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.footer-logos img {
    height: 80px;
    object-fit: contain;
}


/* copyright */
.footer p {
    font-size: 18px;
    opacity: 0.9;
}