/**
 * ALD BETON - Site Styles
 * Light theme, beton/inşaat ilhamlı renkler
 */

/* Variables */
:root {
    --bt-bg: #F7F7F7;
    --bt-bg-alt: #EFEFEF;
    --bt-primary: #1A202C;
    --bt-accent: #3B82F6;
    --bt-accent-dark: #1D4ED8;
    --bt-accent-light: #60A5FA;
    --bt-secondary: #4A5568;
    --bt-text: #2D3748;
    --bt-text-light: #718096;
    --bt-border: rgba(26, 32, 44, 0.1);
    --bt-gradient: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
    --bt-gradient-light: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(29, 78, 216, 0.1) 100%);
    
    --font-main: 'Space Grotesk', sans-serif;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.15);
    --shadow-accent: 0 10px 40px rgba(59, 130, 246, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

body.menu-open {
    overflow: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 4rem;
    transition: var(--transition);
    background: rgba(26, 32, 44, 0.85);
    backdrop-filter: blur(10px);
}

.nav.scrolled {
    background: rgba(26, 32, 44, 0.95);
    padding: 1rem 4rem;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.nav.hidden {
    transform: translateY(-100%);
}

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

.logo-img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
    position: relative;
}

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

.nav-link:hover {
    color: white;
}

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

.nav-switch {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: white;
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--bt-accent);
    background: var(--bt-accent);
    transition: var(--transition);
}

.nav-switch:hover {
    background: var(--bt-accent-dark);
    border-color: var(--bt-accent-dark);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: white;
    transition: var(--transition);
}

.nav-toggle.active span:first-child {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:last-child {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    background: var(--bt-bg);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.mobile-link {
    font-size: 2rem;
    font-weight: 600;
    color: var(--bt-text);
    transition: var(--transition);
}

.mobile-link:hover {
    color: var(--bt-accent);
}

.mobile-link.accent {
    color: var(--bt-accent-dark);
    font-size: 1rem;
    margin-top: 2rem;
}


/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--bt-accent);
    z-index: 1001;
    width: 0%;
    transition: width 0.1s linear;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
}

.hero-slider {
    position: absolute;
    inset: 0;
}

.slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1s ease;
}

.slide.active {
    opacity: 1;
}

.slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.slide-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(26, 32, 44, 0.6), rgba(26, 32, 44, 0.8));
}

.slide-text-overlay {
    position: absolute;
    bottom: 30%;
    left: 4rem;
    max-width: 600px;
    z-index: 10;
    color: white;
}

.slide-text-overlay h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.slide-text-overlay p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.slider-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26, 32, 44, 0.3), transparent);
    pointer-events: none;
}

/* Hero Stats */
.hero-stats {
    position: absolute;
    bottom: 8rem;
    left: 4rem;
    display: flex;
    gap: 3rem;
    z-index: 10;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    color: white;
}

.stat-num {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bt-accent);
}

.stat-text {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.8;
}

/* Slider Dots */
.slider-dots {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.75rem;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active,
.dot:hover {
    background: var(--bt-accent);
}

/* CTA Button */
.cta-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--bt-gradient);
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: 0.5s;
}

.cta-btn:hover::before {
    left: 100%;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-accent);
}

/* Features Section */
.features {
    padding: 5rem 4rem;
    background: var(--bt-bg-alt);
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: var(--bt-gradient-light);
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
}

.features-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bt-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: rgba(59, 130, 246, 0.1);
}

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

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--bt-primary);
}

.feature-card p {
    font-size: 0.875rem;
    color: var(--bt-text-light);
    line-height: 1.7;
}

/* Section Header */
.section-header {
    margin-bottom: 3rem;
    position: relative;
}

.header-line {
    width: 60px;
    height: 4px;
    background: var(--bt-gradient);
    margin-bottom: 1rem;
    border-radius: 2px;
}

.section-number {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: white;
    background: var(--bt-gradient);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--bt-primary);
    line-height: 1.2;
}

/* Services Section */
.services {
    padding: 6rem 4rem;
    background: var(--bt-bg);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--bt-accent), transparent);
}

.services-wrapper {
    max-width: 1400px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.05);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--bt-gradient);
    transition: var(--transition);
    z-index: 2;
    border-radius: 0 0 4px 0;
}

.service-card:hover::before {
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    position: relative;
}

.service-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to top, rgba(0,0,0,0.3), transparent);
    pointer-events: none;
}

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

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

.service-content {
    padding: 2rem;
    position: relative;
}

.service-num {
    font-size: 4rem;
    font-weight: 800;
    background: var(--bt-gradient-light);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: absolute;
    top: 0.5rem;
    right: 1.5rem;
    line-height: 1;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--bt-primary);
}

.service-desc {
    font-size: 0.9rem;
    color: var(--bt-text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.service-features {
    list-style: none;
    padding-top: 1rem;
    border-top: 1px solid var(--bt-border);
}

.service-features li {
    font-size: 0.85rem;
    color: var(--bt-text);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--bt-accent);
    font-weight: 600;
}

/* About Section */
.about {
    padding: 6rem 4rem;
    background: var(--bt-bg-alt);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: var(--bt-gradient-light);
    border-radius: 50%;
    filter: blur(100px);
    transform: translateY(-50%);
    pointer-events: none;
}

.about-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
    position: relative;
    z-index: 1;
}

.about-text {
    margin-bottom: 2rem;
}

.about-intro {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--bt-primary);
}

.about-text p {
    font-size: 0.95rem;
    color: var(--bt-text-light);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.about-values h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--bt-primary);
}

.about-values ul {
    list-style: none;
}

.about-values li {
    font-size: 0.9rem;
    color: var(--bt-text);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.about-values li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--bt-accent);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.stat-box {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-box::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bt-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.stat-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-box:hover::before {
    transform: scaleX(1);
}

.stat-value {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    background: var(--bt-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--bt-text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Beton Types Section */
.beton-types {
    padding: 6rem 4rem;
    background: var(--bt-primary);
    position: relative;
    overflow: hidden;
}

.beton-types::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.beton-types .section-header {
    text-align: center;
    position: relative;
    z-index: 1;
}

.beton-types .header-line {
    margin: 0 auto 1rem;
}

.beton-types .section-number {
    background: rgba(255,255,255,0.1);
    color: var(--bt-accent-light);
}

.beton-types .section-title {
    color: white;
}

.types-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.types-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.type-card {
    background: rgba(255, 255, 255, 0.03);
    padding: 2.5rem 1.5rem;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.type-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bt-gradient);
    opacity: 0;
    transition: var(--transition);
}

.type-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--bt-accent);
}

.type-card:hover::before {
    opacity: 0.1;
}

.type-code {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--bt-accent);
    margin-bottom: 0.75rem;
    position: relative;
    z-index: 1;
}

.type-name {
    display: block;
    font-size: 0.9rem;
    color: white;
    margin-bottom: 0.5rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.type-usage {
    display: block;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    position: relative;
    z-index: 1;
}

/* Testimonials Section */
.testimonials {
    padding: 6rem 4rem;
    background: var(--bt-bg);
    position: relative;
    overflow: hidden;
}

.testimonials::before {
    content: '"';
    position: absolute;
    top: 2rem;
    right: 10%;
    font-size: 20rem;
    font-family: Georgia, serif;
    color: var(--bt-accent);
    opacity: 0.03;
    line-height: 1;
    pointer-events: none;
}

.testimonials-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.testimonials-slider {
    position: relative;
    overflow: hidden;
}

.testimonials-track {
    display: flex;
    gap: 2rem;
    transition: transform 0.5s ease;
}

.testimonial-card {
    flex: 0 0 calc(33.333% - 1.34rem);
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    position: relative;
    border: 1px solid transparent;
}

.testimonial-card:hover {
    border-color: rgba(59, 130, 246, 0.1);
    box-shadow: var(--shadow-md);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 1.5rem;
    left: 2rem;
    font-size: 5rem;
    background: var(--bt-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.2;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonials-nav {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.testimonial-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid var(--bt-accent);
    background: transparent;
    color: var(--bt-accent);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
}

.testimonial-btn:hover {
    background: var(--bt-gradient);
    border-color: transparent;
    color: white;
}

.testimonial-content {
    font-size: 0.95rem;
    color: var(--bt-text);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    border-top: 1px solid var(--bt-border);
    padding-top: 1rem;
}

.author-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--bt-primary);
}

/* Order Section */
.order-section {
    padding: 6rem 4rem;
    background: var(--bt-primary);
    position: relative;
    overflow: hidden;
}

.order-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

.order-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.order-section .section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.order-section .header-line {
    margin: 0 auto 1rem;
}

.order-section .section-number {
    background: rgba(255,255,255,0.1);
    color: var(--bt-accent-light);
}

.order-section .section-title {
    color: white;
}

.order-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.order-info {
    color: white;
}

.order-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.order-info p {
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.order-benefits {
    list-style: none;
}

.order-benefits li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: rgba(255,255,255,0.8);
    font-size: 0.95rem;
}

.order-benefits li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--bt-accent);
}

.order-form {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.order-form .form-row {
    display: contents;
}

.order-form .form-group {
    position: relative;
}

.order-form .form-group.full {
    grid-column: span 2;
}

.order-form input,
.order-form select,
.order-form textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--bt-border);
    background: var(--bt-bg);
    font-family: var(--font-main);
    font-size: 0.9rem;
    color: var(--bt-text);
    transition: var(--transition);
    border-radius: 8px;
}

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

.order-form label {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--bt-text-light);
    pointer-events: none;
    transition: var(--transition);
    background: var(--bt-bg);
    padding: 0 0.25rem;
}

.order-form textarea ~ label {
    top: 1rem;
    transform: none;
}

.order-form input:focus ~ label,
.order-form input:valid ~ label,
.order-form select:focus ~ label,
.order-form select:valid ~ label,
.order-form textarea:focus ~ label,
.order-form textarea:valid ~ label {
    top: 0;
    font-size: 0.75rem;
    color: var(--bt-accent);
    background: white;
}

.order-form select ~ label {
    top: 0;
    font-size: 0.75rem;
    background: white;
}

.order-form .submit-btn {
    grid-column: span 2;
}

.form-message {
    grid-column: span 2;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    display: none;
}

.form-message.success {
    background: #D1FAE5;
    color: #065F46;
}

.form-message.error {
    background: #FEE2E2;
    color: #991B1B;
}

/* Contact Section */
.contact {
    padding: 6rem 4rem;
    background: linear-gradient(135deg, var(--bt-bg-alt) 0%, var(--bt-bg) 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: var(--bt-gradient-light);
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
}

.contact-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    position: relative;
    z-index: 1;
}

.contact-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bt-primary);
    margin-bottom: 0.5rem;
}

.contact-subtitle {
    font-size: 1rem;
    color: var(--bt-text-light);
    margin-bottom: 2rem;
}

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

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

.detail-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--bt-text-light);
    margin-bottom: 0.25rem;
}

.detail-text {
    font-size: 1rem;
    color: var(--bt-primary);
    font-weight: 500;
}

a.detail-text:hover {
    color: var(--bt-accent);
}

/* Contact Form */
.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group.full {
    grid-column: span 2;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--bt-border);
    background: white;
    font-family: var(--font-main);
    font-size: 0.9rem;
    color: var(--bt-text);
    transition: var(--transition);
    border-radius: 4px;
}

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

.form-group label {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    color: var(--bt-text-light);
    pointer-events: none;
    transition: var(--transition);
    background: white;
    padding: 0 0.25rem;
}

.form-group textarea ~ label {
    top: 1rem;
    transform: none;
}

.form-group input:focus ~ label,
.form-group input:valid ~ label,
.form-group select:focus ~ label,
.form-group select:valid ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:valid ~ label {
    top: 0;
    font-size: 0.75rem;
    color: var(--bt-accent);
}

.form-group select ~ label {
    top: 0;
    font-size: 0.75rem;
}

.submit-btn {
    grid-column: span 2;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem 2.5rem;
    background: var(--bt-gradient);
    color: white;
    border: none;
    font-family: var(--font-main);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: 0.5s;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-accent);
}

.btn-icon {
    transition: var(--transition);
}

.submit-btn:hover .btn-icon {
    transform: translateX(5px);
}

/* Footer */
.footer {
    background: var(--bt-primary);
    color: white;
    padding: 4rem 4rem 2rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo-img {
    height: 60px;
    width: auto;
    margin-bottom: 1rem;
}

.footer-tagline {
    font-size: 1rem;
    font-weight: 600;
    color: var(--bt-accent);
    margin-bottom: 0.5rem;
}

.footer-desc {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4,
.footer-address h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-links a,
.footer-contact a,
.footer-contact span {
    display: block;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

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

.footer-address p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-services {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.footer-services span {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    text-align: center;
}

.footer-copy {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-credit {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 0.5rem;
}

.footer-credit a {
    color: var(--bt-accent);
    transition: var(--transition);
}

.footer-credit a:hover {
    color: white;
}

/* Responsive */
@media (max-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .types-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .testimonial-card {
        flex: 0 0 calc(50% - 1rem);
    }
}

@media (max-width: 992px) {
    .nav {
        padding: 1rem 2rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-stats {
        left: 2rem;
        gap: 2rem;
    }
    
    .slide-text-overlay {
        left: 2rem;
        right: 2rem;
        bottom: 25%;
        max-width: none;
    }
    
    .slide-text-overlay h2 {
        font-size: 2rem;
    }
    
    .slide-text-overlay p {
        font-size: 1rem;
    }
    
    .features,
    .services,
    .about,
    .beton-types,
    .testimonials,
    .order-section,
    .contact,
    .footer {
        padding: 4rem 2rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-wrapper {
        grid-template-columns: 1fr;
    }
    
    .order-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .types-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonial-card {
        flex: 0 0 100%;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        grid-template-columns: 1fr;
    }
    
    .form-group.full {
        grid-column: span 1;
    }
    
    .submit-btn {
        grid-column: span 1;
    }
    
    .order-form {
        grid-template-columns: 1fr;
        padding: 1.5rem;
    }
    
    .order-form .form-group.full,
    .order-form .submit-btn,
    .form-message {
        grid-column: span 1;
    }
    
    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 1rem;
        bottom: 6rem;
        left: 2rem;
        right: 2rem;
        justify-content: space-between;
    }
    
    .hero-stat {
        width: calc(50% - 0.5rem);
        text-align: center;
    }
    
    .slide-text-overlay {
        left: 1.5rem;
        right: 1.5rem;
        bottom: 40%;
    }
    
    .slide-text-overlay h2 {
        font-size: 1.5rem;
        line-height: 1.3;
        margin-bottom: 0.75rem;
    }
    
    .slide-text-overlay p {
        font-size: 0.875rem;
        margin-bottom: 1.5rem;
        line-height: 1.5;
    }
    
    .slide-text-overlay .cta-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.8rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .types-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-num {
        font-size: 2rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .slide-text-overlay {
        left: 1rem;
        right: 1rem;
        bottom: 38%;
    }
    
    .slide-text-overlay h2 {
        font-size: 1.25rem;
    }
    
    .slide-text-overlay p {
        font-size: 0.8rem;
    }
    
    .hero-stats {
        bottom: 5rem;
        left: 1rem;
        right: 1rem;
        gap: 0.75rem;
    }
    
    .hero-stat {
        width: calc(50% - 0.5rem);
    }
    
    .stat-num {
        font-size: 1.5rem;
    }
    
    .stat-text {
        font-size: 0.7rem;
    }
    
    .slider-dots {
        bottom: 2rem;
    }
}