/* ==========================================
   Modern Minimalist CSS - Ataşehir Su Tesisatı
   ========================================== */

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

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f4c75;
    --light-accent: #3282b8;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --gray: #6c757d;
    --border-color: #e0e0e0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

a {
    text-decoration: none;
    color: var(--accent-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--light-accent);
}

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

/* Header ve Navigation */
.top-bar {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 10px 0;
    font-size: 0.9rem;
}

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

.top-bar a {
    color: var(--white);
    margin-left: 20px;
}

.top-bar a:hover {
    opacity: 0.8;
}

header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin: 0;
}

.logo p {
    font-size: 0.85rem;
    color: var(--gray);
    margin: 0;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav a {
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
}

nav a:hover,
nav a.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

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

.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--light-bg);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

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

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

/* Sections */
section {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.section-title p {
    color: var(--gray);
    font-size: 1.1rem;
}

/* Features Grid */
.features-grid,
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card,
.service-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover,
.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 20px;
}

.service-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

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

/* Stats Section */
.stats {
    background-color: var(--light-bg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.stat-item p {
    color: var(--gray);
    font-size: 1.1rem;
}

/* Regions Section */
.regions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 40px;
}

.region-item {
    background-color: var(--light-bg);
    padding: 20px;
    border-radius: 5px;
    text-align: center;
    border-left: 4px solid var(--accent-color);
    transition: all 0.3s ease;
}

.region-item:hover {
    background-color: var(--accent-color);
    color: var(--white);
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.contact-info {
    background-color: var(--light-bg);
    padding: 30px;
    border-radius: 8px;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}

.contact-icon {
    font-size: 2rem;
    color: var(--accent-color);
    margin-right: 20px;
}

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

.contact-details p,
.contact-details a {
    color: var(--gray);
}

.contact-form {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--primary-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

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

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 50px 20px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    line-height: 2;
}

.footer-section a:hover {
    color: var(--white);
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}

.whatsapp-float img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.whatsapp-float img:hover {
    transform: scale(1.1);
}

/* Breadcrumb */
.breadcrumb {
    background-color: var(--light-bg);
    padding: 15px 0;
}

.breadcrumb ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
}

.breadcrumb li {
    margin-right: 10px;
}

.breadcrumb li:not(:last-child)::after {
    content: "›";
    margin-left: 10px;
    color: var(--gray);
}

.breadcrumb a {
    color: var(--gray);
}

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

/* Responsive Design */
@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        gap: 0;
        padding: 20px;
    }

    nav a {
        display: block;
        padding: 15px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.6rem; }
    h3 { font-size: 1.3rem; }

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

    .top-bar .container {
        justify-content: center;
        text-align: center;
    }

    .top-bar a {
        margin: 5px 10px;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .btn {
        padding: 12px 25px;
        font-size: 0.9rem;
    }

    .stat-item h3 {
        font-size: 2rem;
    }
}

/* Utilities */
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }