/* ============================================
   ESTXGROUP - Professional Construction Website
   ============================================ */

/* CSS Variables */
:root {
    --primary: #1a1a1a;
    --secondary: #2d2d2d;
    --accent: #d4a44c;
    --accent-dark: #b8923f;
    --text-light: #ffffff;
    --text-muted: #a0a0a0;
    --bg-dark: #0f0f0f;
    --bg-card: #1a1a1a;
    --border-subtle: rgba(255, 255, 255, 0.1);
    --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Bebas Neue', sans-serif;
    font-weight: 400;
    letter-spacing: 0.02em;
    line-height: 1.1;
}

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

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 1.8rem;
    letter-spacing: 0.15em;
    color: var(--text-light);
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--text-light);
}

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

.nav-cta {
    background: var(--accent);
    color: var(--primary);
    padding: 0.75rem 1.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-light);
    transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--secondary) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?w=1920&q=80') center/cover no-repeat;
    opacity: 0.3;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(15,15,15,0.4) 0%, rgba(15,15,15,0.9) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 2rem;
}

.hero-badge {
    display: inline-block;
    background: rgba(212, 164, 76, 0.15);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 0.5rem 1.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.hero h1 span {
    color: var(--accent);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    background: var(--accent);
    color: var(--primary);
    padding: 1rem 2.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: var(--transition);
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(212, 164, 76, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-light);
    padding: 1rem 2.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 2px solid var(--border-subtle);
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--text-light);
    background: rgba(255, 255, 255, 0.05);
}

/* ============================================
   SERVICES SECTION
   ============================================ */
.services {
    padding: 8rem 2rem;
    background: var(--bg-dark);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 5rem;
}

.section-tag {
    display: inline-block;
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

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

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

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

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.8rem;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   PORTFOLIO / GALLERY SECTION
   ============================================ */
.portfolio {
    padding: 8rem 2rem;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--secondary) 100%);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.portfolio-item {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    overflow: hidden;
    cursor: pointer;
}

.portfolio-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.portfolio-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--accent);
    color: var(--primary);
    padding: 0.4rem 0.8rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.portfolio-info {
    padding: 1.5rem;
}

.portfolio-info h3 {
    font-size: 1.4rem;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.portfolio-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Before/After Slider */
.before-after-container {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.before-after-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.before-image {
    clip-path: inset(0 50% 0 0);
    z-index: 2;
}

.after-image {
    z-index: 1;
}

.slider-handle {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background: var(--accent);
    cursor: ew-resize;
    z-index: 10;
    transform: translateX(-50%);
}

.slider-handle::before {
    content: '◄ ►';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--accent);
    color: var(--primary);
    padding: 0.5rem;
    font-size: 0.7rem;
    white-space: nowrap;
    border-radius: 4px;
}

.ba-label {
    position: absolute;
    bottom: 1rem;
    padding: 0.3rem 0.8rem;
    background: rgba(0,0,0,0.7);
    color: var(--text-light);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    z-index: 5;
}

.ba-label.before {
    left: 1rem;
}

.ba-label.after {
    right: 1rem;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    padding: 8rem 2rem;
    background: var(--bg-dark);
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    max-width: 1400px;
    margin: 0 auto;
    align-items: center;
}

.about-content h2 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    text-transform: uppercase;
    margin-bottom: 2rem;
}

.about-content h2 span {
    color: var(--accent);
}

.about-content p {
    color: var(--text-muted);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-subtle);
}

.stat {
    text-align: center;
}

.stat-number {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 3rem;
    color: var(--accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border: 1px solid var(--border-subtle);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent);
    z-index: -1;
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    padding: 8rem 2rem;
    background: linear-gradient(180deg, var(--secondary) 0%, var(--bg-dark) 100%);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info h2 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.contact-info h2 span {
    color: var(--accent);
}

.contact-info > p {
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-size: 1.05rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(212, 164, 76, 0.1);
    border: 1px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-text h4 {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 0.3rem;
}

.contact-text p {
    color: var(--text-light);
    font-size: 1rem;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 3rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-subtle);
    color: var(--text-light);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.submit-btn {
    width: 100%;
    background: var(--accent);
    color: var(--primary);
    padding: 1.2rem;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: var(--accent-dark);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: var(--primary);
    border-top: 1px solid var(--border-subtle);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
}

.footer-brand .logo {
    margin-bottom: 1.5rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-column h4 {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 1.5rem;
    color: var(--accent);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--text-light);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 3rem;
    margin-top: 3rem;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ============================================
   MOBILE RESPONSIVE - FIXED HEADER
   ============================================ */
@media (max-width: 992px) {
    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-image::before {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    /* FIXED: Compact Mobile Header */
    nav {
        padding: 0.75rem 1rem;
    }
    
    .logo {
        font-size: 1.4rem;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15, 15, 15, 0.98);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        border-bottom: 1px solid var(--border-subtle);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        border-bottom: 1px solid var(--border-subtle);
    }
    
    .nav-links li:last-child {
        border-bottom: none;
    }
    
    .nav-links a {
        display: block;
        padding: 1rem;
        text-align: center;
    }
    
    .nav-cta {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    /* Hero adjustments */
    .hero {
        min-height: 90vh;
        padding-top: 60px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }
    
    /* Sections */
    .services, .portfolio, .about, .contact {
        padding: 5rem 1.5rem;
    }
    
    .section-header {
        margin-bottom: 3rem;
    }
    
    .services-grid, .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    /* Contact */
    .contact-form {
        padding: 2rem 1.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-brand p {
        max-width: 100%;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    nav {
        padding: 0.6rem 1rem;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}