/* 
   ================================================
   Endüstriyel İzolasyon Projesi - Premium CSS Dosyası
   ================================================ 
*/
:root {
    /* Color Palette */
    --clr-primary: #0a192f; /* Deep Navy */
    --clr-secondary: #004d40; /* Dark Teal */
    --clr-accent: #ff6b00; /* Vibrant Orange for Insulation/Heat */
    --clr-accent-hover: #e05e00;
    --clr-text-main: #333333;
    --clr-text-light: #555555;
    --clr-white: #ffffff;
    --clr-bg-light: #f5f7fa;
    --clr-bg-dark: #121212;

    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Playfair Display', serif;

    /* Spacing & Utilities */
    --transition-fast: 0.2s ease-in-out;
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.15);
    --radius-md: 8px;
    --radius-lg: 16px;
}

/* ================== Reset & Basis ================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--clr-primary);
}

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

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

/* ================== Layout Utilities ================== */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-padding {
    padding: 100px 0;
}

.bg-light { background-color: var(--clr-bg-light); }
.bg-dark { background-color: var(--clr-primary); color: var(--clr-white); }
.bg-dark h2, .bg-dark p { color: var(--clr-white); }

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: var(--transition-smooth);
}

.btn-primary {
    background-color: var(--clr-accent);
    color: var(--clr-white);
    box-shadow: 0 4px 15px rgba(255, 107, 0, 0.3);
}

.btn-primary:hover {
    background-color: var(--clr-accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 107, 0, 0.4);
}

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

.btn-secondary:hover {
    background-color: var(--clr-white);
    color: var(--clr-primary);
    transform: translateY(-3px);
}

.w-100 {
    width: 100%;
}

/* ================== Header & Nav ================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a:not(.btn-primary) {
    font-weight: 500;
    color: var(--clr-text-main);
    position: relative;
}

.nav-links a:not(.btn-primary)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--clr-accent);
    transition: var(--transition-fast);
}

.nav-links a:not(.btn-primary):hover::after {
    width: 100%;
}

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

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

/* ================== Hero Section ================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: url('Images/WhatsApp\\ Image\\ 2026-04-05\\ at\\ 18.51.28.jpeg') center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(10, 25, 47, 0.9) 0%, rgba(10, 25, 47, 0.6) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: var(--clr-white);
    margin-bottom: 20px;
    font-family: var(--font-heading);
}

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

.hero-content p {
    font-size: 1.2rem;
    color: #e0e0e0;
    margin-bottom: 40px;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

/* ================== Section Headers ================== */
.section-title {
    text-align: center;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-title h2 {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--clr-accent);
}

.section-title p {
    color: var(--clr-text-light);
    margin-top: 15px;
    font-size: 1.1rem;
}

/* ================== Services Grid ================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--clr-white);
    padding: 40px 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    border-bottom: 4px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-bottom: 4px solid var(--clr-accent);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--clr-text-light);
    font-size: 0.95rem;
}

/* ================== SEO Articles ================== */
.article-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.seo-box {
    flex: 1 1 400px;
    background: var(--clr-white);
    padding: 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border-left: 5px solid var(--clr-primary);
}

.seo-box h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.seo-box p {
    color: var(--clr-text-light);
}

.seo-box strong, .seo-box em {
    color: var(--clr-primary);
}

/* ================== Gallery ================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item {
    overflow: hidden;
    border-radius: var(--radius-md);
    position: relative;
    aspect-ratio: 4/3;
    box-shadow: var(--shadow-sm);
}

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

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-item::after {
    content: '';
    position: absolute;
    top: 0; left:0; width:100%; height:100%;
    background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 100%);
    opacity: 0;
    transition: var(--transition-smooth);
    pointer-events: none;
}

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

/* ================== Contact Section ================== */
.contact-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    align-items: center;
}

.contact-info {
    flex: 1 1 400px;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-family: var(--font-heading);
}

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

.contact-details {
    list-style: none;
    margin-top: 30px;
}

.contact-details li {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.contact-details a:hover {
    color: var(--clr-accent);
}

.contact-form-container {
    flex: 1 1 400px;
    background: var(--clr-white);
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: var(--font-main);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--clr-accent);
    box-shadow: 0 0 0 3px rgba(255, 107, 0, 0.1);
}

/* ================== Footer ================== */
footer {
    background-color: #071222;
    color: #8892b0;
    text-align: center;
    padding: 25px 0;
    font-size: 0.9rem;
}

/* ================== Responsive Design ================== */
@media (max-width: 900px) {
    .hero-content h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* Hide default on mobile */
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--clr-white);
        padding: 20px 0;
        box-shadow: var(--shadow-md);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .contact-wrapper {
        flex-direction: column;
    }
}