@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600&display=swap');

*:not(i) {
    font-family: 'Kanit', sans-serif !important;
}

* {
    box-sizing: border-box;
}

/* --- 1. พื้นฐาน --- */
body {
    margin: 0;
    background-color: #0b0b0b;
    color: #333;
}

/* --- 2. Navbar Desktop --- */
.navbar {
    background: #000;
    padding: 10px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background-color 0.4s ease, backdrop-filter 0.4s ease;
}
.navbar.scrolled {
    background: rgba(0, 0, 0, 0.6); 
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-text span { font-size: 15px; }
.logo-text strong { font-size: 23px; }
.logo img { height: 40px; }

.nav-desktop { display: flex; gap: 20px; list-style: none; align-items: center; margin: 0; }
.nav-desktop a { color: white; text-decoration: none; font-size: 17px; font-weight: bold; }
.btn-signin { background: #FF6F00; padding: 8px 20px; border-radius: 20px; font-weight: bold; color: white !important; }

/* Hamburger Icon */
.hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; }
.hamburger span { width: 25px; height: 3px; background: white; border-radius: 2px; }

/* --- 3. Mobile Menu Popup --- */
.mobile-menu-overlay {
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease, visibility 0.3s;
    position: fixed;
    top: 0; left: 0; width: 100%; height: fit-content;
    background: linear-gradient(180deg, rgba(0,0,0,0.98) 0%, rgba(75, 75, 75, 0.9) 100%);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    z-index: 10000;
    padding: 0 16px;
    overflow-y: auto;
    border-radius: 0 0 25px 25px;
}
.mobile-menu-overlay.active { visibility: visible; opacity: 1; }

.mobile-header-top {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 40px; margin-top: 10px;
}
.logo-mobile-menu {
    display: flex; align-items: center; gap: 10px; overflow: hidden;
    justify-content: space-between;
}
.logo-mobile-menu img { height: 40px; flex-shrink: 0; }
.logo-mobile-menu .text-content { text-align: left; line-height: normal; }
.logo-mobile-menu .text-content strong { color: white; font-size: 16px; white-space: nowrap; font-weight: bold; }
.logo-mobile-menu .text-content span { color: white; font-size: 11px; white-space: nowrap; }

.close-btn { color: white; font-size: 35px; cursor: pointer; line-height: 1; }

.mobile-nav-links { 
    list-style: none; padding: 0; text-align: center; margin: 0; 
    opacity: 0; transform: translateY(-30px);
    transition: all 0.3s ease; transition-delay: 0.1s;
}
.mobile-menu-overlay.active .mobile-nav-links { opacity: 1; transform: translateY(0); }
.mobile-nav-links li { margin: 25px 0; }
.mobile-nav-links a, .dropdown-header {
    color: white; text-decoration: none; font-size: 20px; font-weight: bold;
    display: flex; justify-content: center; align-items: center; gap: 8px; cursor: pointer;
}

/* Sub-menu Dropdown */
.sub-menu { display: none; list-style: none; padding: 5px 0; margin: 10px auto 0 auto; }
.sub-menu li { margin: 5px 0; }
.sub-menu a { font-size: 17px !important; color: #ccc !important; text-align: center; font-weight: normal; display: block; padding: 8px 0; }

.btn-signin-mobile {
    background: #FF6F00; color: white !important; padding: 12px 50px;
    border-radius: 30px; font-size: 18px !important; font-weight: bold;
    display: inline-block; margin-top: 15px;
}

/* --- Responsive เฉพาะส่วน Navbar --- */
@media (max-width: 992px) {
    .navbar { padding: 10px 16px; }
    .nav-desktop { display: none; }
    .hamburger { display: flex; }
    .navbar .logo-text strong { font-size: 16px; white-space: nowrap; }
    .navbar .logo-text span { font-size: 11px; white-space: nowrap; }
}

/* =========================================
   Desktop Dropdown Menu (Academics, Faculty)
   ========================================= */
.desktop-dropdown {
    position: relative; 
    padding: 10px 0; 
}

.desktop-submenu {
    display: none; 
    position: absolute;
    top: 100%; 
    left: 0;
    background-color: #ffffff;
    min-width: 220px;
    box-shadow: 0px 8px 25px rgba(0,0,0,0.3);
    border-radius: 12px;
    padding: 10px 0;
    margin: 0;
    list-style: none;
    z-index: 1000;
}

.desktop-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 20px;
}

.desktop-dropdown:hover .desktop-submenu {
    display: block;
    animation: fadeInDown 0.3s ease; 
}

.desktop-submenu li {
    margin: 0;
}

.desktop-submenu a {
    color: #333333 !important; 
    display: block;
    padding: 12px 20px;
    font-size: 15px !important;
    font-weight: normal !important;
    text-align: left;
    transition: all 0.2s ease;
}

.desktop-submenu a:hover {
    background-color: #f8f9fa;
    color: #FF6F00 !important; 
}

/* =========================================
   User Dropdown in Navbar (ปุ่ม User สีส้ม)
   ========================================= */
.user-dropdown {
    position: relative;
    display: inline-block;
}

.user-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    height: 15px;
}

.user-dropdown:hover .user-dropdown-content {
    display: block;
    animation: fadeInDown 0.3s ease;
}

.user-display {
    cursor: pointer;
    border: none;
    display: flex;
    justify-content: center; 
    align-items: center;    
    gap: 8px;
    font-size: 17px;
    min-width: 100px;
}

.user-dropdown-content {
    display: none; 
    position: absolute;
    right: 0;
    top: 100%;
    background-color: #ffffff;
    width: 100%;
    box-shadow: 0px 8px 16px rgba(0,0,0,0.2);
    z-index: 10001;
    border-radius: 10px;
    margin-top: 10px;
    overflow: hidden;
}

.user-dropdown-content.show {
    display: block;
    animation: fadeInDown 0.3s ease;
}

.user-dropdown-content a {
    color: #000000;
    padding: 12px 0;
    text-decoration: none;
    display: block;
    font-size: 16px;
    text-align: center;
    font-weight: normal;
    transition: background-color 0.2s;
}

.user-dropdown-content a:hover {
    background-color: #f1f1f1;
}

.user-dropdown-content a.logout-link {
    color: #FF6F00; 
    font-weight: bold;
    border-top: 1px solid #eee;
}

@keyframes fadeInDown {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* =========================================
   Mobile User Capsule (โหมดล็อกอินแล้วในมือถือ 40/30/30)
   ========================================= */
.user-capsule-container {
    display: flex;
    width: 100%;
    margin-top: 15px;
    align-items: stretch; 
    min-height: 45px;     
}

.capsule-username, .capsule-profile, .capsule-logout {
    display: flex;
    align-items: center;
    justify-content: center; 
    border-radius: 40px;
    font-weight: bold;
    font-size: 20px;
    position: relative;
    text-decoration: none;
}

.capsule-username {
    width: 40%;
    background-color: #ffffff;
    color: #000000;
    z-index: 3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.capsule-profile {
    width: calc(30% + 40px); 
    background-color: #f79844; 
    color: #ffffff;
    z-index: 2;
    margin-left: -40px; 
    padding-left: 20px; 
}

.capsule-logout {
    width: calc(30% + 40px); 
    background-color: #FF6F00; 
    color: #ffffff;
    z-index: 1;
    margin-left: -40px; 
    padding-left: 20px; 
}

/* =========================================
   Global Layout (โครงสร้างหน้าเว็บทุกหน้า)
   ========================================= */

/* 1. แถบสีดำด้านบน (Department of...) */
.page-header {
    background-color: #000;
    color: white;
    text-align: center;
    padding: 50px 20px 100px 20px; 
    font-size: 30px;
    font-weight: bold;
    letter-spacing: 1px;
}

/* 2. พื้นหลังด้านหลังการ์ด*/
.page-background {
    background-color: #ffffff;
    min-height: 100vh;
    padding-bottom: 0px;
    padding-top: 1px;
    position: relative;
}

/* 3. การ์ดสีขาวขอบมนมีเงา (สำหรับใส่เนื้อหา) */
.content-card {
    background-color: #ffffff;
    border-radius: 30px 30px 0 0; 
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5); 
    margin: -50px 120px 0px 120px; 
    padding: 40px 5%; 
    min-height: 80vh;
    position: relative;
    z-index: 10; 
}

/* 4. ปรับขนาดตอนเป็นจอมือถือ */
@media (max-width: 992px) {
    .content-card {
        margin: -18px 15px 0 15px; 
        padding: 30px 20px;
        border-radius: 25px 25px 0 0;
    }
    .page-header {
        font-size: 16px; 
        padding: 40px 20px 35px 20px;
    }
}