/* ===================================
   ROOT VARIABLES & RESET
   =================================== */

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #2c5f4f;
    --accent-color: #c9a05c;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --text-white: #ffffff;
    --bg-light: #f8f8f8;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ===================================
   UTILITY CLASSES
   =================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--text-white);
    border-color: var(--secondary-color);
}

.btn-primary:hover {
    background-color: #234c3f;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-contact {
    background-color: var(--accent-color);
    color: var(--text-white);
    padding: 10px 24px;
    border-radius: 4px;
}

.btn-contact:hover {
    background-color: #b38d4a;
}

.btn-view {
    background-color: var(--text-white);
    color: var(--primary-color);
    padding: 12px 28px;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

.btn-view:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
    color: var(--primary-color);
}

.btn-submit {
    width: 100%;
    margin-top: 16px;
}

/* ===================================
   NAVIGATION
   =================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-brand .logo {
    height: 50px;
    width: auto;
    display: block;
}

.nav-brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-menu a {
    color: var(--text-white);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--accent-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-white);
    transition: var(--transition);
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: #1a1a1a;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('images/hero-main.jpg');
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.5) 100%);
    z-index: 1;
}

.hero-overlay {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 24px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 24px;
    line-height: 1.1;
    text-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-white);
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-white);
    opacity: 0.8;
    z-index: 2;
}

.scroll-indicator span {
    display: block;
    font-size: 0.875rem;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-left: 2px solid var(--text-white);
    border-bottom: 2px solid var(--text-white);
    transform: rotate(-45deg);
    margin: 0 auto;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(-45deg);
    }
    40% {
        transform: translateY(10px) rotate(-45deg);
    }
    60% {
        transform: translateY(5px) rotate(-45deg);
    }
}

/* ===================================
   SERVICES SECTION
   =================================== */

.services {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.service-card {
    background-color: var(--bg-white);
    padding: 40px 32px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 16px;
    font-weight: 700;
}

.service-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ===================================
   PORTFOLIO SECTION
   =================================== */

.portfolio {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 40px;
}

.project-card {
    background-color: var(--bg-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    position: relative;
    width: 100%;
    height: 280px;
    background: linear-gradient(135deg, #2c5f4f 0%, #c9a05c 100%);
    overflow: hidden;
}

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

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

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(26, 26, 26, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-info {
    padding: 28px;
}

.project-location {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--secondary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.project-info h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 12px;
    font-weight: 700;
}

.project-info p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.project-tags span {
    display: inline-block;
    padding: 6px 14px;
    background-color: var(--bg-light);
    color: var(--text-dark);
    font-size: 0.8125rem;
    border-radius: 20px;
    font-weight: 500;
}

/* ===================================
   ABOUT SECTION
   =================================== */

.about {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 24px;
    font-weight: 700;
}

.about-text .lead {
    font-size: 1.25rem;
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 24px;
    line-height: 1.6;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
    font-size: 1.0625rem;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.feature h4 {
    font-size: 1.125rem;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-weight: 600;
}

.feature p {
    color: var(--text-light);
    font-size: 0.9375rem;
    margin: 0;
}

.about-stats {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    padding: 40px 32px;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.stat {
    padding: 24px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.stat:last-child {
    border-bottom: none;
}

.stat h3 {
    font-size: 3rem;
    color: var(--accent-color);
    font-weight: 800;
    margin-bottom: 8px;
}

.stat p {
    color: var(--text-white);
    font-size: 1rem;
    margin: 0;
    opacity: 0.9;
}

/* ===================================
   CONTACT SECTION
   =================================== */

.contact {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.contact-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 0.9375rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background-color: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(44, 95, 79, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    background-color: var(--bg-white);
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.contact-info h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 16px;
    font-weight: 700;
}

.contact-info > p {
    color: var(--text-light);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

.contact-item strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 4px;
    font-size: 0.9375rem;
}

.contact-item a {
    color: var(--secondary-color);
    font-weight: 500;
}

.contact-item a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.contact-item p {
    color: var(--text-light);
    margin: 0;
}

.social-links {
    display: flex;
    gap: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.social-links a {
    color: var(--secondary-color);
    font-weight: 600;
    font-size: 0.9375rem;
}

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

/* ===================================
   FOOTER
   =================================== */

.footer {
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.footer-brand p {
    color: var(--accent-color);
    font-weight: 500;
}

.footer-links h4,
.footer-services h4 {
    font-size: 1.125rem;
    margin-bottom: 20px;
    color: var(--text-white);
}

.footer-links ul,
.footer-services ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

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

.footer-services li {
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9375rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--primary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 32px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .nav-brand .logo {
        height: 40px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .services,
    .portfolio,
    .about,
    .contact {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .stat h3 {
        font-size: 2.5rem;
    }
}