:root {
    /* Colors */
    --color-bg-dark: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-text-main: #f5f5f5;
    --color-text-muted: #a3a3a3;
    --color-accent: #d4af37;
    /* Muted Gold */
    --color-accent-hover: #b5952f;
    --color-border: #333333;
    --color-white: #ffffff;
    --color-overlay: rgba(0, 0, 0, 0.6);

    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Layout */
    --container-width: 1200px;
    --header-height: 80px;
    --header-height-mobile: 70px;
}

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

body {
    background-color: var(--color-bg-dark);
    color: var(--color-text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--color-white);
    font-weight: 600;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

.py-large {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg-dark);
}

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

.btn-outline {
    background-color: transparent;
    border-color: var(--color-white);
    color: var(--color-white);
}

.btn-outline:hover {
    background-color: var(--color-white);
    color: var(--color-bg-dark);
    transform: translateY(-2px);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--color-white);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-accent);
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    background-color: var(--color-bg-secondary);
    background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.7)), url('../images/hero_bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    /* Parallax effect */
    border-bottom: 1px solid var(--color-border);
}

@media (max-width: 1024px) {
    .hero {
        background-attachment: scroll;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* Project Detail Pages */
.project-detail-hero {
    height: 60vh;
    min-height: 400px;
    position: relative;
    background-color: var(--color-bg-secondary);
    overflow: hidden;
}

.project-hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.project-hero-content {
    position: absolute;
    bottom: 2rem;
    left: 0;
    right: 0;
    z-index: 2;
}

.project-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.gallery-item {
    cursor: pointer;
    overflow: hidden;
    height: 300px;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

@media (max-width: 768px) {
    .project-detail-hero {
        height: 50vh;
        min-height: 350px;
    }

    .project-hero-content {
        bottom: 1.5rem;
    }

    .project-hero-content .hero-title {
        font-size: 2.2rem !important;
    }

    .project-gallery {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .gallery-item {
        height: 250px;
    }
}

/* Base Responsive Grids */
.two-col-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Responsiveness */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 2.5rem;
        --spacing-xl: 5rem;
    }

    body {
        font-size: 15px;
        /* Slightly smaller base font for mobile */
    }

    .hero-title {
        font-size: 2.4rem;
        line-height: 1.2;
        word-wrap: break-word;
        /* Prevent long words from breaking layout */
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: var(--spacing-sm);
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
        color: var(--color-white);
        z-index: 1100;
        padding: 10px;
        /* Better touch target */
        margin-right: -10px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        gap: 1rem;
    }

    .hero-buttons .btn {
        width: 100%;
        text-align: center;
        padding: 1.2rem;
        /* Larger touch target */
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 3.5rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }

    .two-col-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .nav-links.active {
        display: flex !important;
        flex-direction: column;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: #0a0a0a;
        /* Solid black background to prevent overlap */
        padding: 80px 2rem 2rem 2rem;
        justify-content: flex-start;
        align-items: center;
        gap: 2.5rem;
        z-index: 2000;
        overflow-y: auto;
    }

    .nav-links.active a {
        font-size: 1.5rem;
        font-family: var(--font-heading);
    }

    section {
        padding-top: 100px !important;
        /* Ensure sections clear the fixed navbar on mobile */
    }

    .section-title {
        font-size: 2.2rem;
        margin-bottom: 1.5rem;
    }

    .section-desc {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .project-card {
        height: 350px !important;
    }

    .project-title {
        font-size: 1.3rem !important;
    }

    .project-category {
        font-size: 0.7rem !important;
    }
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}/* Projects Grid Styles (Global) */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    justify-content: center;
    gap: 2rem;
    margin-top: var(--spacing-lg);
}

.project-card {
    position: relative;
    height: 400px;
    overflow: hidden;
    cursor: pointer;
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    color: var(--color-white);
    transform: translateY(20px);
    opacity: 0.9;
    transition: all 0.3s ease;
}

.project-card:hover .project-overlay {
    transform: translateY(0);
    opacity: 1;
}

.project-category {
    font-size: 0.8rem;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
}

.project-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

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