/* --- Cấu trúc Sticky Footer --- */
html, body {
    height: 100%;
    margin: 0;
}

body {
    display: flex;
    flex-direction: column;
}

main {
    flex: 1 0 auto; /* Đẩy footer xuống đáy */
}

/* --- Tùy chỉnh Navbar --- */
.navbar-custom {
    background-color: #2c3e50 !important;
}

.nav-link-btn {
    color: white !important;
    padding: 8px 20px !important;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-link-btn:hover {
    background-color: #ff9800 !important;
    color: white !important;
    transform: translateY(-2px);
}

/* --- Tùy chỉnh Footer --- */
.footer {
    background-color: #1a252f;
    color: #bdc3c7;
    padding: 40px 0 20px;
    flex-shrink: 0;
}

.footer h5 {
    color: #ff9800;
    font-size: 16px;
    margin-bottom: 20px;
}

.footer a {
    color: #bdc3c7;
    text-decoration: none;
}

.footer a:hover {
    color: white;
}

.shortLogo {
    max-height: 70px;
    margin-bottom: 15px;
}

.footerInfo p {
    margin-bottom: 5px;
    font-size: 13px;
}

.social-icons img {
    width: 30px;
    margin-left: 10px;
    transition: 0.3s;
}

.social-icons img:hover {
    opacity: 0.7;
}

.info-card {
    max-width: 400px;
    margin: 20px auto;
    background: #ffffff;
    border-left: 5px solid #ff9800; /* Màu cam thương hiệu STU */
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border-radius: 0 15px 15px 0;
    transition: all 0.3s ease;
    text-align: left;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(255, 152, 0, 0.15);
}

.info-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.info-dot {
    height: 10px;
    width: 10px;
    background-color: #ff9800;
    border-radius: 50%;
    margin-right: 10px;
    display: inline-block;
}

.info-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #2c3e50;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-item {
    margin-bottom: 15px;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item label {
    display: block;
    font-size: 0.75rem;
    color: #95a5a6;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 2px;
}

.info-item p {
    font-size: 1.1rem;
    color: #34495e;
    font-weight: 500;
    margin: 0;
}