/* ===================================
   SN Bau NRW - Main Styles
   Professional Color Scheme
   =================================== */

:root {
    /* Colors */
    --primary-color: #1a2332;      /* Dark Blue */
    --accent-color: #ff6b35;       /* Orange */
    --light-bg: #f5f5f5;           /* Light Gray */
    --white: #ffffff;
    --text-dark: #000000;
    --text-light: #ff7c48;
    --border-color: #e0e0e0;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-size-base: 16px;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-md: 0 5px 20px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.2);
}

/* ===================================
   Reset & Base Styles
   =================================== */

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ===================================
   Container
   =================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   Language Switcher
   =================================== */

.language-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 8px;
    z-index: 1000;
    background: var(--white);
    padding: 10px;
    border-radius: 50px;
    box-shadow: var(--shadow-md);
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    border-radius: 25px;
    background: transparent;
    transition: var(--transition-fast);
    cursor: pointer;
    font-size: 14px;
}

.lang-btn:hover {
    background: var(--light-bg);
}

.lang-btn.active {
    background: var(--accent-color);
    color: var(--white);
}

.lang-btn .flag {
    font-size: 18px;
}

.lang-btn .lang-code {
    font-weight: 600;
}

/* ===================================
   Header / Navigation
   =================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 999;
    transition: var(--transition-fast);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition-fast);
}

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

.phone-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition-fast);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

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

/* ===================================
   Hero Section
   =================================== */

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-color) 0%, #2c3e50 100%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 35, 50, 0.7);
    z-index: 1;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,.03) 35px, rgba(255,255,255,.03) 70px);
    animation: movePattern 20s linear infinite;
}

@keyframes movePattern {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    max-width: 800px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

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

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-down {
    display: block;
    width: 40px;
    height: 40px;
    color: var(--white);
    font-size: 24px;
    animation: bounce 2s infinite;
}

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

/* ===================================
   Buttons
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #e55a2b;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ===================================
   Section Styles
   =================================== */

section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-label {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 107, 53, 0.1);
    color: var(--accent-color);
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

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

/* ===================================
   About Section
   =================================== */

.about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.about-badge {
    position: absolute;
    bottom: 30px;
    right: 30px;
    background: var(--accent-color);
    color: var(--white);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.badge-number {
    font-size: 2.5rem;
    font-weight: 800;
}

.badge-text {
    font-size: 0.9rem;
    margin-top: 5px;
}

.about-features {
    margin: var(--spacing-md) 0;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.about-features i {
    color: #56bd16;
    font-size: 1.2rem;
}

/* ===================================
   Services Section
   =================================== */

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: 15px;
    text-align: center;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--accent-color), #ff8555);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===================================
   Stats Section
   =================================== */

.stats {
    background: var(--primary-color);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-md);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    display: inline-block;
}

.stat-suffix {
    font-size: 2rem;
    font-weight: 800;
    display: inline-block;
    color: var(--accent-color);
}

.stat-label {
    font-size: 1.1rem;
    margin-top: var(--spacing-sm);
    opacity: 0.9;
}

/* ===================================
   Gallery Section
   =================================== */

.gallery {
    background: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.gallery-item {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

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

.before-after-slider {
    position: relative;
    height: 300px;
    overflow: hidden;
}

.before-image,
.after-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.before-image img,
.after-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.label {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--accent-color);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.gallery-info {
    padding: var(--spacing-sm);
}

.gallery-info h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.gallery-info p {
    color: var(--text-light);
}

/* ===================================
   Contact Section
   =================================== */

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--white);
    border-radius: 10px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-color), #ff8555);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-item h4 {
    margin-bottom: 5px;
    color: var(--primary-color);
}

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

.contact-item p a:hover {
    color: var(--accent-color);
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: #25D366;
    color: var(--white);
    border-radius: 30px;
    font-weight: 600;
    justify-content: center;
}

.whatsapp-btn:hover {
    background: #128C7E;
    transform: translateY(-2px);
}

.contact-form {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-fast);
}

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

.alert {
    padding: 12px 20px;
    border-radius: 10px;
    margin-bottom: var(--spacing-sm);
}

.alert-success {
    background: #d4edda;
    color: #155724;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
}

/* ===================================
   Footer
   =================================== */

.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-col h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
}

.footer-col p,
.footer-col li {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 10px;
    line-height: 1.6;
}

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

.footer-col i {
    margin-right: 10px;
    color: var(--accent-color);
}

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

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

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

/* ===================================
   WhatsApp Float Button
   =================================== */

.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    box-shadow: var(--shadow-lg);
    z-index: 998;
    transition: var(--transition-fast);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background: #128C7E;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70% { box-shadow: 0 0 0 20px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}