/* 
 * XIN Dynasty - Premium Static Stylesheet
 * Architectural & Interior Design Showcase
 */

@import url('https://fonts.googleapis.com/css2?family=Raleway:wght@700&family=Roboto:wght@300;400;500;700&display=swap');

:root {
    /* Color Palette */
    --color-bg-light: #ffede6; /* Soft Cream/Peach Background from xindynasty.com */
    --color-bg-card-light: #ffffff; /* White card backgrounds */
    --color-primary: #dd183b; /* Crimson Red brand color */
    --color-primary-hover: #cc1939; /* Darker red on hover */
    --color-text-dark: #3a3a3a; /* Dark gray body text from live site */
    --color-text-muted: #666666; /* Muted gray text */
    --color-border: rgba(221, 24, 59, 0.12); /* Crimson tinted borders */
    
    /* Dark Theme Variants (Used for Hero, Header, and Footer sections to maintain contrast) */
    --color-bg-dark: #140609; /* Deep Plum-Black from live site */
    --color-bg-card-dark: #1d0d10; /* Deep Plum card background */
    --color-text-light: #ffffff;
    --color-text-light-muted: #ffede6;
    
    /* Layout & Spacing */
    --container-max-width: 1200px; /* Aligned with Astra container width */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    /* Transitions */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Fonts (Matched exactly to Astra / Endor theme) */
    --font-heading: 'Raleway', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

/* CSS Resets */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography Utility */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--color-text-dark);
}

p {
    color: var(--color-text-muted);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* Header & Navigation */
header.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: var(--transition-smooth);
}

header.site-header.scrolled,
header.site-header.mobile-active {
    background: rgba(20, 6, 9, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 24px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-smooth);
}

header.site-header.scrolled .nav-container,
header.site-header.mobile-active .nav-container {
    padding: 12px 24px;
}

.logo-link img {
    height: 48px;
    width: auto;
    display: block;
    transition: var(--transition-smooth);
}

header.site-header.scrolled .logo-link img,
header.site-header.mobile-active .logo-link img {
    height: 40px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

.nav-item a {
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-light);
    position: relative;
    padding: 8px 0;
}

.nav-item a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-smooth);
}

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

.nav-item a:hover::after,
.nav-item.active a::after {
    width: 100%;
}

.nav-item.active a {
    color: var(--color-primary);
}

/* Burger Menu */
.burger-menu {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
}

.burger-menu span {
    width: 25px;
    height: 2px;
    background-color: var(--color-text-light);
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    padding-top: 100px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(20, 6, 9, 0.64) 0%, rgba(20, 6, 9, 0.64) 100%),
                url('../images/xin-dynasty-home-01.webp') no-repeat center center / cover;
    overflow: hidden;
    color: var(--color-text-light);
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--color-text-light);
}

.hero-title span {
    color: var(--color-primary);
    font-style: italic;
}

.hero-desc {
    font-size: 1.15rem;
    max-width: 580px;
    margin-bottom: 40px;
    color: var(--color-text-light-muted);
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    background-color: var(--color-primary);
    color: #ffffff;
    padding: 16px 36px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    box-shadow: 0 10px 25px rgba(221, 24, 59, 0.25);
    transition: var(--transition-smooth);
}

.hero-btn:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(221, 24, 59, 0.35);
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    aspect-ratio: 4/5;
    border: 1px solid var(--color-border);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
    opacity: 0;
    transform: scale(0.95);
    animation: scaleUp 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.3s forwards;
}

.hero-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

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

/* Sections General */
.section {
    padding: 120px 24px;
    position: relative;
    scroll-margin-top: 80px; /* Account for sticky header height */
}

.section-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.section-header {
    margin-bottom: 60px;
    max-width: 650px;
}

.section-tag {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 12px;
    display: inline-block;
}

.section-title {
    font-size: clamp(2rem, 3.5vw, 3rem);
    margin-bottom: 20px;
}

/* Services / Features Grid */
.grid-services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--color-bg-card-light);
    padding: 50px 40px;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 40px rgba(221, 24, 59, 0.08);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 24px;
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.service-desc {
    font-size: 0.95rem;
}

/* Portfolio Page elements */
.portfolio-header {
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, #080203 100%);
    padding: 160px 24px 80px;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-light);
}

.portfolio-header-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 16px;
    color: var(--color-text-light);
}

.portfolio-header-desc {
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: var(--color-text-light-muted);
}

/* Portfolio Filters */
.portfolio-filters {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 40px auto 20px;
    max-width: var(--container-max-width);
    padding: 0 24px;
}

.filter-btn {
    background-color: rgba(221, 24, 59, 0.02);
    color: var(--color-text-dark);
    border: 1px solid rgba(221, 24, 59, 0.15);
    padding: 10px 24px;
    border-radius: 30px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.filter-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: rgba(221, 24, 59, 0.05);
    transform: translateY(-2px);
}

.filter-btn.active {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    box-shadow: 0 5px 15px rgba(221, 24, 59, 0.2);
}

/* Project Cards Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.project-card {
    background-color: var(--color-bg-card-light);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition-smooth);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 45px rgba(221, 24, 59, 0.08);
}

.project-img-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 3/2;
    overflow: hidden;
    background-color: var(--color-bg-light);
}

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

.project-card:hover .project-img-wrapper img {
    transform: scale(1.06);
}

.project-overlay {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(20, 6, 9, 0.75);
    backdrop-filter: blur(8px);
    border: 1px solid var(--color-border);
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-primary);
}

.project-info {
    padding: 30px;
}

.project-name {
    font-size: 1.4rem;
    margin-bottom: 10px;
    line-height: 1.3;
    color: var(--color-text-dark);
}

.project-location {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Footer styling */
footer.site-footer {
    background-color: var(--color-bg-dark);
    border-top: 1px solid var(--color-border);
    padding: 80px 24px 40px;
    color: var(--color-text-light-muted);
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand img {
    height: 40px;
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 0.95rem;
    max-width: 320px;
}

.footer-title {
    font-size: 1.15rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 24px;
    color: #ffffff;
}

.footer-links {
    list-style: none;
}

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

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: 5px;
}

.footer-contact p {
    margin-bottom: 14px;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-bottom {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

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

@keyframes scaleUp {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive Rules */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 50px;
    }
    .hero-desc {
        margin: 0 auto 40px;
    }
    .hero-image-wrapper {
        max-width: 480px;
        margin: 0 auto;
    }
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(20, 6, 9, 0.98);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 30px 24px;
        gap: 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    }
    .nav-menu.active {
        display: flex;
    }
    .nav-menu.active .nav-item {
        width: 100%;
        text-align: center;
    }
    .nav-menu.active .nav-item a {
        display: block;
        padding: 10px 0;
        font-size: 1.1rem;
    }
    .burger-menu {
        display: flex;
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .footer-brand {
        grid-column: span 1;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

/* Service Card New (Homepage) */
.service-card-new {
    transition: var(--transition-smooth);
}
.service-card-new:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(221, 24, 59, 0.08) !important;
    border-color: var(--color-primary) !important;
}
.service-card-new img {
    transition: var(--transition-smooth);
}
.service-card-new:hover img {
    transform: scale(1.05);
}

/* Why Choose Us Icons & Grid */
.why-choose-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px 30px;
    margin-top: 60px;
}
.why-choose-item {
    text-align: center;
    padding: 20px;
}
.why-choose-icon-wrapper {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: rgba(221, 24, 59, 0.06);
    margin-bottom: 20px;
    color: var(--color-primary);
    transition: var(--transition-smooth);
}
.why-choose-item:hover .why-choose-icon-wrapper {
    transform: scale(1.1);
    background-color: var(--color-primary);
    color: #ffffff;
}
.why-choose-item h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--color-text-dark);
}
.why-choose-item p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-muted);
}

@media (max-width: 992px) {
    .why-choose-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .why-choose-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}