:root {
    --primary: #fdf2f4;
    --primary-dark: #e8c3c7;
    --accent: #2d2d2d;
    --white: #ffffff;
    --cream: #fffcfd;
    --text: #5a5a5a;
    --text-light: #9a9a9a;
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    --radius-lg: 40px;
    --radius-md: 20px;
}

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

body {
    background-color: var(--cream);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.6;
    scroll-behavior: smooth;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }

/* Navigation */
nav {
    height: 90px;
    display: flex;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(15px);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-left, .nav-right {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    flex: 1;
}

.nav-right { justify-content: flex-end; }

.logo {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 4px;
    text-align: center;
}

.logo span { color: var(--primary-dark); }

nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: color 0.3s;
}

nav a:hover { color: var(--primary-dark); }

.btn-nav-dark {
    background: var(--accent);
    color: white !important;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
}

.lang-switcher {
    display: flex;
    gap: 5px;
    background: #f0f0f0;
    padding: 3px;
    border-radius: 20px;
}

.lang-btn {
    border: none;
    background: none;
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 700;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    color: var(--text-light);
}

.lang-btn.active { background: var(--accent); color: white; }

/* Header / Hero */
header {
    padding-top: 120px;
    padding-bottom: 60px;
    text-align: center;
}

.hero-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.hero-img-box {
    aspect-ratio: 4/5;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.hero-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.hero-img-box:hover img { transform: scale(1.05); }

.hero-tagline {
    max-width: 700px;
    margin: 0 auto;
}

.hero-tagline p {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-style: italic;
    color: var(--text);
    line-height: 1.4;
}

/* Service Bar */
.service-bar {
    padding: 4rem 0;
    background: var(--white);
}

.bar-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.bar-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--primary);
    border-radius: var(--radius-md);
    transition: all 0.3s;
    cursor: pointer;
    border: 1px solid transparent;
}

.bar-card.active {
    background: var(--accent);
    color: white;
}

.bar-icon {
    font-size: 1.5rem;
}

.bar-text strong {
    display: block;
    font-size: 1rem;
    font-family: var(--font-serif);
}

.bar-text span {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* About Section */
.about-section {
    padding: 8rem 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.about-text h2 {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--accent);
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 3rem;
    color: var(--text);
}

.btn-main-dark {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 1.2rem 3rem;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    border-radius: 50px;
    transition: all 0.3s;
}

.btn-main-dark:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.about-image {
    position: relative;
    padding: 20px;
    background: var(--primary);
    border-radius: var(--radius-lg);
}

.about-image img {
    width: 100%;
    border-radius: calc(var(--radius-lg) - 20px);
    display: block;
}

@media (max-width: 968px) {
    .nav-left, .nav-right { display: none; }
    .hero-images, .bar-grid, .about-grid { grid-template-columns: 1fr; }
    .about-text { text-align: center; }
    .hero-tagline p { font-size: 1.1rem; }
}


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

body {
    background-color: var(--cream);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.6;
    scroll-behavior: smooth;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.center { text-align: center; }

nav {
    height: 80px;
    display: flex;
    align-items: center;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.logo span { color: var(--primary-dark); }

.links { display: flex; align-items: center; }

.lang-switcher {
    display: flex;
    gap: 5px;
    margin-right: 2rem;
    background: #f0f0f0;
    padding: 3px;
    border-radius: 20px;
}

.lang-btn {
    border: none;
    background: none;
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 700;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    transition: all 0.3s;
    color: var(--text-light);
}

.lang-btn.active {
    background: var(--accent);
    color: white;
}

.links a {
    color: var(--accent);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: color 0.3s;
}

.links a:hover { color: var(--primary-dark); }

.btn-nav {
    background: var(--accent);
    color: white !important;
    padding: 0.5rem 1.2rem;
    border-radius: 5px;
}

header {
    height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: var(--primary-light);
    overflow: hidden;
    position: relative;
}

header .container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-collage {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-template-rows: repeat(12, 1fr);
    gap: 20px;
    height: 85vh;
    position: relative;
}

.collage-item {
    position: relative;
    overflow: hidden;
    transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.collage-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.collage-item:hover img {
    transform: scale(1.05);
}

.item-1 {
    grid-column: 1 / 7;
    grid-row: 1 / 8;
    z-index: 2;
}

.item-2 {
    grid-column: 7 / 13;
    grid-row: 1 / 5;
    z-index: 1;
}

.item-3 {
    grid-column: 9 / 13;
    grid-row: 5 / 13;
    z-index: 2;
}

.item-4 {
    grid-column: 7 / 9;
    grid-row: 5 / 13;
    z-index: 1;
}

.hero-text-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    text-align: center;
    width: 100%;
    max-width: 800px;
    pointer-events: none;
}

.hero-text-overlay * {
    pointer-events: auto;
}

.hero-text-overlay h1 {
    font-family: var(--font-serif);
    font-size: 6rem;
    line-height: 0.9;
    margin-bottom: 1.5rem;
    color: var(--accent);
    font-weight: 400;
    text-shadow: 0 0 20px rgba(255,255,255,0.8);
}

.hero-text-overlay h1 span {
    display: block;
    font-style: italic;
    color: var(--primary-dark);
    font-size: 5rem;
    margin-left: 0;
}

.hero-text-overlay p {
    font-size: 1.2rem;
    color: var(--text);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(5px);
    padding: 1rem;
    display: inline-block;
}

.hero-text-overlay .btn-main {
    background: var(--accent);
    color: white;
    padding: 1.2rem 3rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}


header .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
}

h1 {
    font-family: var(--font-serif);
    font-size: 4.5rem;
    line-height: 1;
    margin-bottom: 2rem;
    color: var(--accent);
    font-weight: 400;
}

h1 span {
    display: block;
    font-style: italic;
    color: var(--primary-dark);
    font-size: 3.8rem;
    margin-left: 2rem;
}

header p {
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.btn-main {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.btn-main:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.hero-image img {
    width: 100%;
    border-radius: 0;
    box-shadow: -40px 40px 0px var(--primary-dark);
    transform: rotate(-2deg);
    transition: transform 0.5s;
}

.hero-image img:hover {
    transform: rotate(0deg) scale(1.02);
}

.section { padding: 8rem 0; }
.section.light { background: var(--white); }

.section h2 {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    margin-bottom: 4rem;
    color: var(--accent);
    font-weight: 400;
    text-align: left;
}

.section h2.center {
    text-align: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 0;
    border: 1px solid #f0f0f0;
    transition: all 0.4s;
    text-align: left;
    position: relative;
}

.service-card:nth-child(even) {
    margin-top: 3rem;
}

.service-card:hover {
    border-color: var(--primary-dark);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.03);
}

.service-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.pricing-container {
    max-width: 800px;
    margin: 0 auto;
}

.price-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    border-bottom: 1px solid #eee;
}

.price-value {
    font-family: var(--font-serif);
    font-weight: 700;
    color: var(--primary-dark);
    font-size: 1.3rem;
}

.ai-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.ai-text h2 { text-align: left; }

.ai-features {
    list-style: none;
    margin: 2rem 0;
}

.ai-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
}

.ai-visual img {
    width: 100%;
    border-radius: 15px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.gallery-item {
    aspect-ratio: 3/4;
    overflow: hidden;
    border-radius: 0;
    transition: all 0.5s;
}

.gallery-item:nth-child(even) {
    transform: translateY(2rem);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.gallery-item:hover img { transform: scale(1.1); }

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid #eee;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.contact-icon {
    font-size: 2rem;
    background: var(--primary);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.contact-info .label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-light);
    font-weight: 700;
}

.contact-info p, .contact-info a {
    font-size: 1.1rem;
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.zalo-link { color: #0084ff !important; }

.booking-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.booking-form {
    display: grid;
    gap: 1.2rem;
    background: var(--white);
    padding: 4rem;
    border-radius: 0;
    border: 1px solid var(--primary);
    box-shadow: 20px 20px 0px var(--primary);
}

.form-group input, .form-group select {
    width: 100%;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #ddd;
    font-family: var(--font-sans);
    outline: none;
}

.form-group input:focus { border-color: var(--primary-dark); }

footer {
    padding: 4rem 0;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* AI Widget */
.ai-widget {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 2000;
}

.chat-toggle {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0.8rem 1.2rem;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.chat-window {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 350px;
    height: 450px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.hidden { opacity: 0; transform: translateY(10px); pointer-events: none; }

.chat-header {
    background: var(--accent);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#close-chat { background: none; border: none; color: white; font-size: 1.2rem; cursor: pointer; }

.chat-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.message {
    max-width: 85%;
    padding: 0.6rem 1rem;
    border-radius: 12px;
    font-size: 0.9rem;
}

.message.bot { background: #f5f5f5; align-self: flex-start; }
.message.user { background: var(--primary-dark); color: white; align-self: flex-end; }

.chat-input {
    padding: 1rem;
    border-top: 1px solid #eee;
    display: flex;
    gap: 8px;
}

.chat-input input {
    flex: 1;
    padding: 0.6rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    outline: none;
}

.chat-input button {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0 1rem;
    border-radius: 8px;
    cursor: pointer;
}

@media (max-width: 968px) {
    header .container, .ai-grid { grid-template-columns: 1fr; text-align: center; }
    h1 { font-size: 3rem; }
    .hero-content { order: 2; }
    .hero-image { order: 1; }
    .ai-text { text-align: center; }
    .ai-features li { justify-content: center; }
    .links { display: none; }
}