/* ===== BASE STYLES ===== */
:root {
    --primary-color: #b90e0a;
    --secondary-color: #f5f5f5;
    --accent-color: #f4c430;
    --text-color: #333333;
    --light-text: #ffffff;
    --dark-bg: #222222;
    --border-color: #dddddd;
    --transition-speed: 0.3s;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    --glass-bg: rgba(255, 255, 255, 0.2);
    --glass-border: rgba(255, 255, 255, 0.3);
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(185, 14, 10, 0.1), rgba(244, 196, 48, 0.1));
    z-index: -1;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-speed) ease;
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== GLASS EFFECT ===== */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    box-shadow: var(--box-shadow);
}

@supports not (backdrop-filter: blur(12px)) {
    .glass {
        background: rgba(255, 255, 255, 0.4);
    }
}

/* ===== HEADER STYLES ===== */
header {
    position: relative;
    min-height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light-text);
    padding: 80px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
}

.header-content {
    max-width: 800px;
    position: relative;
    z-index: 2;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.header-content h1 {
    font-size: 50px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 2px;
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
}

.header-content p {
    font-size: 20px;
    font-style: italic;
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* ===== NAVBAR STYLES ===== */
nav {
    position: sticky;
    top: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 100;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.3s ease;
}

nav.light-mode {
    background: rgba(255, 255, 255, 0.8);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    color: #fff;
    transition: color 0.3s ease;
    margin-right: 25px;
}

.logo:hover {
    color: #ffd700;
}

.nav-links {
    display: flex;
    gap: 25px;
    list-style: none;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-links li a {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
    position: relative;
    padding: 8px 15px;
    transition: color 0.3s ease;
}

.nav-links li a .icon {
    margin-right: 8px;
}

.nav-links li a:hover {
    color: #ffd700;
}

.nav-links li a:hover::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #ff6f61, #ffd700);
    bottom: -5px;
    left: 0;
    animation: underline 0.3s forwards;
}

@keyframes underline {
    from { width: 0; }
    to { width: 100%; }
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(0, 0, 0, 0.9);
    padding: 10px 15px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    min-width: 200px;
    z-index: 10;
    transition: opacity 0.2s ease;
    opacity: 0;
}

.dropdown-menu a {
    display: block;
    color: #fff;
    text-decoration: none;
    padding: 8px 15px;
    font-size: 0.9rem;
    transition: background 0.3s ease;
}

.dropdown-menu a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.dropdown:hover .dropdown-menu {
    display: block;
    opacity: 1;
}

/* Search Bar */
.search-bar {
    display: flex;
    align-items: center;
}

.search-bar input {
    padding: 8px 15px;
    border: none;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    outline: none;
    font-size: 1rem;
    width: 180px;
    transition: width 0.3s ease;
}

.search-bar input:focus {
    width: 220px;
}

/* Login Button */
.login-btn {
    padding: 8px 20px;
    background: #ff6f61;
    border: none;
    border-radius: 20px;
    color: #fff;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s ease, transform 0.3s ease;
}

.login-btn:hover {
    background: #ffd700;
    transform: scale(1.05);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 250px;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 200;
    padding: 20px;
    transition: left 0.5s ease;
}

.mobile-menu.active {
    left: 0;
}

.mobile-menu ul {
    list-style: none;
    margin-top: 50px;
}

.mobile-menu ul li {
    margin: 20px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.mobile-menu ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 1.2rem;
}

/* Hamburger */
.hamburger {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #fff;
    margin-right: 15px;
    z-index: 201; /* Đảm bảo hamburger ở trên cùng */
}

/* ===== MAIN CONTENT ===== */
.main-content {
    position: relative;
    z-index: 1;
    padding: 80px 20px;
    background: transparent;
}

.contact-box {
    margin-bottom: 40px;
    padding: 30px;
    border-radius: 15px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed) ease;
}

.contact-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.contact-box h2 {
    font-size: 32px;
    margin-bottom: 25px;
    text-align: center;
    color: var(--light-text);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    font-weight: 600;
    letter-spacing: 1.5px;
}

/* ===== CONTACT FORM SECTION ===== */
.contact-form {
    max-width: 500px;
    margin: 0 auto;
    color: var(--light-text);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--light-text);
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: none;
    border-radius: 8px;
    background-color: rgba(255, 255, 255, 0.3);
    color: var(--light-text);
    font-size: 16px;
    transition: all var(--transition-speed) ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    background-color: rgba(255, 255, 255, 0.4);
    outline: none;
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background-color: var(--accent-color);
    color: var(--dark-bg);
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.submit-btn:hover {
    background-color: #e0b427;
    transform: translateY(-2px);
}

/* ===== CONTACT INFO SECTION ===== */
.contact-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--light-text);
    padding: 15px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    transition: all var(--transition-speed) ease;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.contact-item .icon {
    font-size: 24px;
    color: var(--accent-color);
}

.contact-item p {
    font-size: 16px;
}

.contact-item a {
    color: var(--light-text);
    transition: color var(--transition-speed) ease;
}

.contact-item a:hover {
    color: var(--accent-color);
}

/* ===== MAP SECTION ===== */
.map-section {
    margin-bottom: 40px;
    padding: 0;
    background: transparent;
}

.map-container {
    position: relative;
    width: 100%;
    margin: 0;
    padding: 0;
    border-radius: 0;
}

.map-container h2 {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 10px 20px;
    border-radius: 8px;
    color: var(--light-text);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    font-size: 32px;
    font-weight: 600;
    letter-spacing: 1.5px;
    z-index: 2;
}

.map-container iframe {
    border-radius: 0;
    box-shadow: none;
    width: 100%;
    height: 600px;
}

/* ===== FOOTER ===== */
footer {
    background-color: rgba(34, 34, 34, 0.95);
    padding: 40px 20px;
    color: var(--light-text);
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--light-text);
    opacity: 0.8;
    font-size: 16px;
    transition: all var(--transition-speed) ease;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--accent-color);
    transform: translateY(-2px);
    display: inline-block;
}

footer p {
    font-size: 14px;
    opacity: 0.7;
}
.footer-social {
    margin: 20px 0;
}

.footer-social a {
    margin: 0 15px;
    color: var(--light-text);
    font-size: 24px;
    transition: all var(--transition-speed) ease;
}

.footer-social a:hover {
    color: var(--accent-color);
    transform: translateY(-3px);
    text-shadow: 0 0 10px rgba(230, 184, 0, 0.5);
}

/* ===== MODE TOGGLE ===== */
.mode-toggle {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--accent-color);
    color: var(--dark-bg);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    z-index: 100;
    transition: all var(--transition-speed) ease;
}

.mode-toggle:hover {
    transform: scale(1.1);
    background-color: #e0b427;
}

/* ===== RESPONSIVE STYLES ===== */
@media (max-width: 1024px) {
    .header-content h1 {
        font-size: 40px;
    }

    .header-content p {
        font-size: 18px;
    }

    nav.glass {
        margin: 10px 15px;
    }

    .contact-box {
        padding: 20px;
    }

    .map-container h2 {
        font-size: 28px;
    }

    .map-container iframe {
        height: 500px;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        display: none;
    }

    .search-bar {
        display: none;
    }

    .header-content h1 {
        font-size: 32px;
    }

    .header-content p {
        font-size: 16px;
    }

    nav.glass {
        margin: 10px;
        border-radius: 12px;
    }

    .contact-box h2 {
        font-size: 28px;
    }

    .map-container h2 {
        font-size: 24px;
    }

    .map-container iframe {
        height: 400px;
    }
}

@media (max-width: 576px) {
    .header-content h1 {
        font-size: 28px;
    }

    .header-content p {
        font-size: 14px;
    }

    .contact-box {
        padding: 15px;
    }

    .contact-box h2 {
        font-size: 24px;
    }

    .form-group input,
    .form-group textarea {
        font-size: 14px;
    }

    .submit-btn {
        font-size: 14px;
    }

    .contact-item p {
        font-size: 14px;
    }

    .map-container h2 {
        font-size: 20px;
    }

    .map-container iframe {
        height: 300px;
    }
}