/* 
    MONREI SAIGON - Premium Landing Page Design
    Author: Antigravity
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:wght@400;700&display=swap');

:root {
    --primary: #CDA26E;
    --primary-light: #E6C18D;
    --secondary: #0B265D;
    --secondary-dark: #051636;
    --bg: #F8F9FA;
    --text: #333333;
    --text-muted: #666666;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, .font-serif {
    font-family: 'Playfair Display', serif;
}

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

/* --- Header --- */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(11, 38, 93, 0.85);
    backdrop-filter: blur(10px);
    padding: 10px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 60px;
    transition: var(--transition);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav ul li a {
    text-decoration: none;
    color: var(--white);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.header-cta .btn {
    padding: 12px 25px;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(205, 162, 110, 0.3);
}

.header-cta .btn:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(205, 162, 110, 0.4);
}

/* --- Hero --- */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), url('image/Monrei-Saigon-2-1.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    position: relative;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.hero h1 {
    font-size: 72px;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 5px;
    animation: fadeInUp 1s ease-out;
}

.hero p {
    font-size: 18px;
    margin-bottom: 40px;
    letter-spacing: 2px;
    font-weight: 300;
    animation: fadeInUp 1.2s ease-out;
}

.hero .btn-group {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 1.4s ease-out;
}

.btn-primary {
    padding: 15px 40px;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-outline {
    padding: 15px 40px;
    background: transparent;
    color: var(--white);
    text-decoration: none;
    border: 1px solid var(--white);
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--secondary);
}

/* --- Section General --- */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 48px;
    color: var(--secondary);
    margin-bottom: 10px;
}

.section-title .divider {
    width: 80px;
    height: 3px;
    background: var(--primary);
    margin: 0 auto;
}

/* --- Overview --- */
.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.overview-text h3 {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 20px;
}

.overview-text p {
    margin-bottom: 20px;
    color: var(--text-muted);
}

.overview-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 40px;
}

.stat-item h4 {
    font-size: 36px;
    color: var(--secondary);
}

.stat-item p {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.overview-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.image-caption {
    margin-top: 15px;
    font-size: 14px;
    font-style: italic;
    color: var(--text-muted);
    text-align: center;
}

/* Project Info Table */
.project-info-table {
    margin-top: 30px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.info-label {
    font-weight: 600;
    color: var(--secondary);
    font-size: 14px;
}

.info-value {
    color: var(--text-muted);
    font-size: 14px;
    text-align: right;
}

/* Why Choose Section */
.why-choose {
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.feature-item {
    text-align: center;
    padding: 30px;
    background: var(--bg);
    border-radius: 15px;
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.05);
}

.feature-icon {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 20px;
}

.feature-item h4 {
    color: var(--secondary);
    margin-bottom: 15px;
    font-size: 20px;
}

.feature-item p {
    font-size: 14px;
    color: var(--text-muted);
}

/* --- Amenities --- */
.amenities {
    background: var(--secondary);
    color: var(--white);
}

.amenities .section-title h2 {
    color: var(--white);
}

.amenities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.amenity-card {
    background: rgba(255,255,255,0.03);
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: var(--transition);
    overflow: hidden;
    height: 100%;
}

.amenity-card:hover {
    background: rgba(255,255,255,0.06);
    transform: translateY(-10px);
}

.amenity-img {
    height: 200px;
    overflow: hidden;
}

.amenity-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.amenity-card:hover .amenity-img img {
    transform: scale(1.1);
}

.amenity-info {
    padding: 30px;
    text-align: left;
}

.amenity-info h4 {
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 15px;
}

.amenity-info p {
    font-size: 14px;
    opacity: 0.8;
}

/* Infrastructure */
.infrastructure {
    background-color: var(--bg);
}

.infra-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.infra-item {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.infra-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.infra-img {
    height: 180px;
    overflow: hidden;
}

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

.infra-text {
    padding: 25px;
}

.infra-text h4 {
    color: var(--secondary);
    margin-bottom: 10px;
    font-size: 18px;
}

.infra-text p {
    font-size: 14px;
    color: var(--text-muted);
}

/* Floorplans & Products */
.floor-intro {
    max-width: 800px;
    margin: 0 auto 50px;
    text-align: center;
    color: var(--text-muted);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0,0,0,0.05);
    border: 1px solid rgba(0,0,0,0.03);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

.product-img {
    height: 240px;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-img img {
    transform: scale(1.1);
}

.product-info {
    padding: 30px;
}

.product-info h4 {
    color: var(--secondary);
    font-size: 20px;
    margin-bottom: 15px;
}

.product-info p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 25px;
}

.btn-sm {
    display: inline-block;
    padding: 10px 25px;
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    text-decoration: none;
    border-radius: 5px;
    font-size: 13px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-sm:hover {
    background: var(--primary);
    color: var(--white);
}

/* Gallery */
.gallery {
    background-color: var(--secondary-dark);
    color: var(--white);
}

.gallery .section-title h2 {
    color: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 300px);
    gap: 20px;
}

.gallery-item {
    overflow: hidden;
    border-radius: 15px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
    filter: grayscale(30%);
}

.gallery-item:hover img {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.gallery-cta {
    margin-top: 50px;
    text-align: center;
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(4, 250px);
    }
}
.location-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.location-details {
    padding: 40px;
    background: var(--white);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.location-item {
    margin-bottom: 30px;
}

.location-item h5 {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: 10px;
}

.location-map iframe {
    width: 100%;
    height: 100%;
    border-radius: 15px;
    min-height: 450px;
}

/* --- Contact --- */
.contact {
    background: url('image/bg-monrei-saigon.jpg');
    background-size: cover;
    position: relative;
}

.contact-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(11, 38, 93, 0.9);
}

.contact .container {
    position: relative;
    z-index: 1;
    color: var(--white);
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--glass);
    padding: 50px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

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

.form-group input, .form-group textarea {
    width: 100%;
    padding: 15px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 5px;
    color: var(--white);
    font-family: inherit;
}

.form-group input::placeholder, .form-group textarea::placeholder {
    color: rgba(255,255,255,0.6);
}

.contact-form .btn {
    width: 100%;
    padding: 15px;
    background: var(--primary);
    border: none;
    color: var(--white);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

/* --- Footer --- */
footer {
    background: var(--secondary-dark);
    color: var(--white);
    padding: 80px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-logo img {
    height: 80px;
    margin-bottom: 20px;
}

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 25px;
    color: var(--primary);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 12px;
    color: rgba(255,255,255,0.5);
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* --- Fixed Contact --- */
.fixed-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 9999;
}

.contact-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: var(--transition);
    position: relative;
}

.contact-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(205, 162, 110, 0.7);
    animation: ripple 2s infinite;
}

.contact-btn.zalo::before {
    box-shadow: 0 0 0 0 rgba(33, 150, 243, 0.7);
}

@keyframes ripple {
    0% {
        box-shadow: 0 0 0 0 rgba(205, 162, 110, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(205, 162, 110, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(205, 162, 110, 0);
    }
}

.contact-btn.zalo::before {
    animation: ripple-zalo 2s infinite;
}

@keyframes ripple-zalo {
    0% {
        box-shadow: 0 0 0 0 rgba(33, 150, 243, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(33, 150, 243, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(33, 150, 243, 0);
    }
}

.contact-btn img {
    width: 35px;
    height: 35px;
    object-fit: contain;
}

.contact-btn.call {
    background: var(--primary);
}

.contact-btn.zalo {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    border: none;
}

.contact-btn:hover {
    transform: scale(1.1);
}

/* Ringing Animation */
.ring-anim {
    animation: ring 1.2s infinite;
}

@keyframes ring {
    0% { transform: scale(1) rotate(0); }
    10% { transform: scale(1.1) rotate(-10deg); }
    20% { transform: scale(1.1) rotate(10deg); }
    30% { transform: scale(1.1) rotate(-10deg); }
    40% { transform: scale(1.1) rotate(10deg); }
    50% { transform: scale(1) rotate(0); }
    100% { transform: scale(1) rotate(0); }
}

/* --- Mobile --- */
@media (max-width: 992px) {
    .overview-grid, .location-content, .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 48px;
    }
    
    nav {
        display: none;
    }
}