/* 
   Delhi İnşaat - Main Styles
   Theme: Premium, Construction, Professional
   Colors: Deep Navy & Gold
*/

:root {
    --primary-color: #0F172A;
    /* Slate 900 */
    --secondary-color: #1E293B;
    /* Slate 800 */
    --accent-color: #D4AF37;
    /* Metallic Gold */
    --accent-hover: #b5952f;
    --text-dark: #334155;
    --text-light: #F8FAFC;
    --bg-light: #F1F5F9;
    --bg-white: #FFFFFF;

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

    --transition: all 0.3s ease;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
}

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

ul {
    list-style: none;
}

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

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

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    line-height: 1.2;
}

.section {
    padding: 100px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.bg-dark {
    background-color: var(--primary-color);
    color: var(--text-light);
}

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

.text-gold {
    color: var(--accent-color);
}

.text-white {
    color: var(--text-light);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 2px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
    border: 2px solid var(--accent-color);
}

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

.btn-outline {
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
    margin-left: 10px;
}

.btn-outline:hover {
    background-color: #fff;
    color: var(--primary-color);
}

.btn-gold {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    width: 100%;
}

.btn-gold:hover {
    background-color: var(--accent-hover);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(15, 23, 42, 0.95);
    padding: 20px 0;
    transition: var(--transition);
    backdrop-filter: blur(5px);
}

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

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

.logo .accent-text {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 400;
    position: relative;
    padding-bottom: 5px;
}

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

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

.nav-links a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    background-color: var(--primary-color);
    /* Fallback gradient until we have an image */
    background: linear-gradient(rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.8)), url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?ixlib=rb-1.2.1&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
    display: flex;
    align-items: center;
    position: relative;
    color: #fff;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: #fff;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards;
}

.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.img-placeholder {
    width: 100%;
    height: 400px;
    background-color: #ddd;
    border-radius: 4px;
    /* Placeholder image for about */
    background: url('https://images.unsplash.com/photo-1503387762-592deb58ef4e?ixlib=rb-1.2.1&auto=format&fit=crop&w=800&q=80') no-repeat center center/cover;
    box-shadow: var(--shadow-hover);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-title::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 0;
    width: 40px;
    height: 4px;
    background-color: var(--accent-color);
}

.lead {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    border-left: 3px solid var(--accent-color);
    padding-left: 15px;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-heading);
}

.stat-label {
    font-size: 0.9rem;
    color: #64748b;
}

/* Services */
.section-subtitle {
    margin-top: 10px;
    color: #64748b;
    margin-bottom: 50px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: #fff;
    padding: 40px;
    border-radius: 4px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-bottom-color: var(--accent-color);
}

.service-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 40px;
    padding-top: 40px;
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    height: 500px;
    cursor: pointer;
    box-shadow: var(--shadow);
}

.project-img {
    width: 100%;
    height: 100%;
    background-color: #333;
    transition: transform 0.5s ease;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* Individual backgrounds for demo */
.project-card:nth-child(1) .project-img {
    background: url('https://images.unsplash.com/photo-1600596542815-e328986594c9?ixlib=rb-1.2.1&auto=format&fit=crop&w=800&q=80') center/cover;
}

.project-card:nth-child(2) .project-img {
    background: url('https://images.unsplash.com/photo-1486325212027-8081648a52aa?ixlib=rb-1.2.1&auto=format&fit=crop&w=800&q=80') center/cover;
}

.project-card:nth-child(3) .project-img {
    background: url('https://images.unsplash.com/photo-1512917774080-9991f1c4c750?ixlib=rb-1.2.1&auto=format&fit=crop&w=800&q=80') center/cover;
}


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

.project-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: #fff;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
}

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

/* Contact */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.contact-item .icon {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.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);
    color: #fff;
    border-radius: 2px;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

/* Footer */
.footer {
    background-color: #020617;
    /* Even darker */
    color: #94a3b8;
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 40px;
    margin-bottom: 20px;
}

.footer-brand h3 {
    color: #fff;
    margin-bottom: 10px;
}

.footer-links a {
    margin-left: 20px;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    font-size: 0.8rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
        /* Hide for now, requires JS for toggle */
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--primary-color);
        flex-direction: column;
        text-align: center;
        padding: 20px 0;
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: block;
    }

    .hamburger span {
        display: block;
        width: 25px;
        height: 3px;
        background-color: #fff;
        margin: 5px 0;
    }

    .about-grid,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .img-placeholder {
        height: 250px;
    }

    .btn-outline {
        margin-left: 0;
        margin-top: 10px;
        display: block;
        text-align: center;
    }

    .hero-buttons .btn {
        width: 100%;
        margin-bottom: 10px;
    }
}

/* Lightbox Styles */
.lightbox {
    display: none;
    position: fixed;
    z-index: 2000;
    padding-top: 50px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.lightbox-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 1000px;
    max-height: 80vh;
    object-fit: contain;
    animation: zoomIn 0.3s;
}

@keyframes zoomIn {
    from {
        transform: scale(0)
    }

    to {
        transform: scale(1)
    }
}

#lightbox-caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
    font-size: 1.2rem;
    font-family: var(--font-heading);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.lightbox-close:hover,
.lightbox-close:focus {
    color: var(--accent-color);
    text-decoration: none;
    cursor: pointer;
}

/* Fix for existing lint error in project-card */
.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    height: 350px;
    cursor: pointer;
}