/* TÜRKİYE HELYUM SANAYİ - Kurumsal Web Sitesi CSS */

:root {
    --primary-color: #1a5f9e;
    --secondary-color: #2c88d9;
    --accent-color: #ff6b35;
    --dark-color: #1a1a2e;
    --light-color: #f8f9fa;
    --text-color: #333;
    --white: #ffffff;
    --gray: #6c757d;
    --light-gray: #e9ecef;
    --border-radius: 8px;
    --box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

/* Header & Navigation */
.top-bar {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--primary-color) 100%);
    padding: 10px 0;
    color: var(--white);
}

.top-bar a {
    color: var(--white);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

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

.navbar {
    background: var(--white);
    box-shadow: var(--box-shadow);
    padding: 15px 0;
}

.navbar-brand {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color) !important;
}

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

.nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    padding: 10px 20px !important;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color) !important;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, rgba(26, 95, 158, 0.9) 0%, rgba(44, 136, 217, 0.9) 100%),
                url('../img/helyum-gaz.jpg');
    background-size: cover;
    background-position: center;
    padding: 150px 0;
    color: var(--white);
    text-align: center;
}

.hero-section h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-section p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 30px;
}

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    border: none;
    padding: 12px 35px;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.btn-outline-light {
    border: 2px solid var(--white);
    padding: 12px 35px;
    font-weight: 600;
    border-radius: var(--border-radius);
}

/* Section Styles */
.section-padding {
    padding: 80px 0;
}

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

.section-heading h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.section-heading h2 strong {
    color: var(--primary-color);
}

.section-subtitle {
    color: var(--gray);
    font-size: 18px;
}

/* Cards */
.service-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-card .icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: var(--white);
    font-size: 32px;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.service-card p {
    color: var(--gray);
    line-height: 1.8;
}

/* Product Cards */
.product-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 100%;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-card .image-wrapper {
    position: relative;
    overflow: hidden;
    height: 250px;
}

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

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

.product-card .content {
    padding: 30px;
}

.product-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.product-card .price {
    font-size: 20px;
    color: var(--primary-color);
    font-weight: 700;
}

/* Sevkiyat Grid */
.sevkiyat-section {
    background: var(--white);
    padding: 80px 0;
}

.sevkiyat-grid {
    margin-top: 40px;
}

.sevkiyat-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--light-color);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    transition: var(--transition);
}

.sevkiyat-item:hover {
    background: var(--primary-color);
    color: var(--white);
}

.sevkiyat-item i {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.sevkiyat-item:hover i {
    color: var(--white);
}

.sevkiyat-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.sevkiyat-item p {
    font-size: 14px;
    color: var(--gray);
}

.sevkiyat-item:hover p {
    color: rgba(255,255,255,0.8);
}

/* Alt İletişim Section */
.alt-iletisim-section {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--primary-color) 100%);
    padding: 60px 0;
    color: var(--white);
}

.contact-info-box {
    text-align: center;
    padding: 30px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.contact-info-box .icon {
    width: 60px;
    height: 60px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--white);
    font-size: 24px;
}

.contact-info-box h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.working-hours {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: var(--border-radius);
}

.working-hours h5 {
    font-size: 20px;
    margin-bottom: 10px;
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    cursor: pointer;
    aspect-ratio: 4/3;
}

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

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item .overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 95, 158, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .overlay {
    opacity: 1;
}

.gallery-item .overlay i {
    color: var(--white);
    font-size: 32px;
}

/* Content Pages */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 100px 0;
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    font-size: 42px;
    font-weight: 700;
}

.content-section {
    padding: 80px 0;
}

.content-wrapper {
    background: var(--white);
    padding: 50px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.content-wrapper h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary-color);
}

.content-wrapper h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    margin: 30px 0 15px;
}

.content-wrapper p {
    line-height: 1.9;
    color: var(--text-color);
    margin-bottom: 20px;
    text-align: justify;
}

.content-wrapper ul {
    margin: 20px 0;
    padding-left: 30px;
}

.content-wrapper ul li {
    margin-bottom: 10px;
    line-height: 1.8;
}

.content-wrapper strong {
    color: var(--primary-color);
}

.highlight-box {
    background: linear-gradient(135deg, var(--light-color) 0%, #fff 100%);
    border-left: 5px solid var(--primary-color);
    padding: 25px;
    margin: 30px 0;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.highlight-box p {
    margin-bottom: 0;
    font-size: 18px;
    font-style: italic;
}

/* Contact Page */
.contact-form-wrapper {
    background: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.contact-info-sidebar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 40px;
    border-radius: var(--border-radius);
    color: var(--white);
    height: 100%;
}

.form-control {
    padding: 12px 15px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: none;
}

/* Footer */
footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 60px 0 30px;
}

footer h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--accent-color);
}

footer ul {
    list-style: none;
}

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

footer ul li a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
}

footer ul li a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    margin-top: 40px;
    text-align: center;
}

/* Breadcrumb */
.breadcrumb-wrapper {
    background: var(--light-color);
    padding: 20px 0;
    border-bottom: 1px solid var(--light-gray);
}

.breadcrumb {
    background: none;
    margin: 0;
    padding: 0;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
}

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

/* Features List */
.features-list {
    margin: 30px 0;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.feature-item i {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.feature-item p {
    margin: 0;
    color: var(--gray);
}

/* Responsive */
@media (max-width: 991px) {
    .hero-section {
        padding: 100px 0;
    }
    
    .hero-section h1 {
        font-size: 36px;
    }
    
    .section-heading h2 {
        font-size: 28px;
    }
    
    .content-wrapper {
        padding: 30px;
    }
}

@media (max-width: 767px) {
    .hero-section h1 {
        font-size: 28px;
    }
    
    .hero-section p {
        font-size: 16px;
    }
    
    .section-padding {
        padding: 50px 0;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.8s ease-out;
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--light-gray);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Banner Carousel */
.banner-carousel {
    width: 100%;
    height: 400px;
    overflow: hidden;
}

.banner-carousel .carousel,
.banner-carousel .carousel-inner,
.banner-carousel .carousel-item {
    height: 100%;
}

.banner-carousel .carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-carousel .carousel-caption {
    background: rgba(0, 0, 0, 0.5);
    padding: 20px 40px;
    border-radius: var(--border-radius);
    bottom: 40px;
}

.banner-carousel .carousel-caption h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.banner-carousel .carousel-caption p {
    font-size: 16px;
    margin: 0;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.banner-carousel .carousel-control-prev,
.banner-carousel .carousel-control-next {
    width: 5%;
    opacity: 0.8;
}

.banner-carousel .carousel-indicators button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin: 0 5px;
}

.banner-carousel .carousel-indicators button.active {
    background-color: var(--accent-color);
}

@media (max-width: 767px) {
    .banner-carousel {
        height: 250px;
    }

    .banner-carousel .carousel-caption h3 {
        font-size: 20px;
    }

    .banner-carousel .carousel-caption p {
        font-size: 14px;
    }
}

/* Utility Classes */
.text-primary { color: var(--primary-color) !important; }
.text-accent { color: var(--accent-color) !important; }
.bg-primary { background-color: var(--primary-color) !important; }
.mt-20 { margin-top: 20px; }
.mt-40 { margin-top: 40px; }
.mb-20 { margin-bottom: 20px; }
.mb-40 { margin-bottom: 40px; }