:root {
    /* Color Palette - Premium Trustworthy Theme */
    --primary-color: #171E27;    /* Slate Metallic Dark */
    --secondary-color: #E31837;  /* Crimson Logo Red */
    --secondary-hover: #B5132C;
    --dark-color: #0F172A;
    --light-color: #F8FAFC;
    --white: #FFFFFF;
    --gray-text: #64748B;
    --border-color: #E2E8F0;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Layout */
    --transition: all 0.3s ease;
    --box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --border-radius: 12px;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

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

ul {
    list-style: none;
}

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

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

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

/* Typography Utility */
.text-center { text-align: center; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    gap: 10px;
    font-size: 1rem;
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--white);
    box-shadow: 0 4px 14px 0 rgba(227, 24, 55, 0.39);
}

.btn-primary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(227, 24, 55, 0.4);
}

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

.btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

.section-badge {
    display: inline-block;
    padding: 8px 16px;
    background-color: rgba(23, 30, 39, 0.1);
    color: var(--primary-color);
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: background-color 0.4s ease, padding 0.4s ease, box-shadow 0.4s ease;
}

.navbar.scrolled {
    background-color: rgba(23, 30, 39, 0.98);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
}

.navbar.scrolled .nav-links a {
    color: var(--white);
}

.navbar.scrolled .hamburger i {
    color: var(--white);
}

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

.logo-text {
    display: flex;
    align-items: center;
    gap: 25px; /* Increased space between KT and Kahramanlar Tur */
    text-decoration: none;
    font-family: var(--font-heading);
}

.logo-kt {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 1;
    letter-spacing: -3px;
    display: flex;
    font-style: italic;
    transform: skewX(-5deg);
}

.logo-kt .k {
    color: #000000;
    /* Adding text shadow so the black K is visible on the dark navbar/hero */
    text-shadow: 
        1px 1px 0 rgba(255,255,255,0.7),
        -1px -1px 0 rgba(255,255,255,0.7),
        1px -1px 0 rgba(255,255,255,0.7),
        -1px 1px 0 rgba(255,255,255,0.7);
    z-index: 2;
}

.logo-kt .t {
    color: var(--secondary-color);
    margin-left: -5px; /* overlapping effect */
    z-index: 1;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.logo-brand {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--secondary-color);
    letter-spacing: 0.5px;
    line-height: 1.1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.logo-sub {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--secondary-color);
    letter-spacing: 0;
    margin-top: 4px;
    text-transform: capitalize;
}

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

.nav-links a {
    color: var(--white);
    font-weight: 500;
    position: relative;
}

.navbar.scrolled .nav-links a:not(.btn) {
    color: var(--dark-color);
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition);
}

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

.nav-links .btn-primary {
    color: var(--white) !important;
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    color: var(--white);
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    background: url('hero-bg.png') no-repeat center center/cover;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.4) 100%);
    z-index: 1;
}

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

.hero-content h1 {
    font-size: 4.5rem;
    color: var(--white);
    margin-bottom: 20px;
}

.hero-content .highlight {
    color: var(--secondary-color);
}

.hero-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    max-width: 600px;
}

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

/* Stats Section */
.stats {
    background-color: var(--white);
    padding: 0 20px;
    position: relative;
    z-index: 10;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    transform: translateY(-50%);
}

.stat-card {
    background-color: var(--white);
    padding: 30px 20px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
    border-bottom: 4px solid var(--secondary-color);
    transition: var(--transition);
}

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

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-card p {
    color: var(--gray-text);
    font-weight: 500;
}

/* About Section */
.about-content {
    max-width: 900px;
    margin: 0 auto 50px;
    text-align: center;
}

.about-content p {
    color: var(--gray-text);
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.8;
}

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

.about-content p em {
    color: var(--secondary-color);
    font-style: normal;
    font-weight: 600;
}

.about-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.about-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--secondary-color);
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(227, 24, 55, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.card-icon i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.about-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.about-card p {
    color: var(--gray-text);
}

.values-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.values-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-text);
    font-weight: 500;
}

.values-list i {
    color: var(--secondary-color);
    font-size: 1rem;
}

/* Services Section */
.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-header p {
    color: var(--gray-text);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 50px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--secondary-color);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

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

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

.service-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(23, 30, 39, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    transition: var(--transition);
}

.service-icon i {
    font-size: 1.8rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background-color: var(--primary-color);
}

.service-card:hover .service-icon i {
    color: var(--white);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.service-card p {
    color: var(--gray-text);
    margin-bottom: 20px;
}

.service-link {
    font-weight: 600;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.service-link:hover {
    color: var(--secondary-color);
}

/* References Section */
.references {
    background-color: var(--white);
    border-top: 1px solid var(--border-color);
}

.references-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 50px;
    margin-top: 40px;
}

.reference-logo-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 200px;
    height: 120px;
    padding: 10px;
}

.reference-logo {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(100%) opacity(0.7);
    transition: var(--transition);
    cursor: pointer;
}

.reference-logo:hover {
    filter: grayscale(0%) opacity(1);
    transform: scale(1.1);
}

/* Contact Section */
.contact-container {
    display: flex;
    gap: 60px;
}

.contact-info, .contact-form-wrapper {
    flex: 1;
}

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

.contact-info > p {
    color: var(--gray-text);
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.icon-box {
    width: 60px;
    height: 60px;
    background-color: rgba(227, 24, 55, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-box i {
    font-size: 1.5rem;
    color: var(--secondary-color);
}

.contact-item h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

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

.contact-form {
    background-color: var(--white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.contact-form h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--dark-color);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(227, 24, 55, 0.2);
}

/* Footer Section */
.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 25px;
    max-width: 350px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-links h4 {
    font-size: 1.2rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--secondary-color);
}

.footer-links ul li {
    margin-bottom: 15px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links ul li a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding: 25px 0;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.active {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-left.active {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.slide-in-right.active {
    opacity: 1;
    transform: translateX(0);
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }
.delay-3 { transition-delay: 0.6s; }

/* Responsive adjustments */
@media (max-width: 992px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        transform: translateY(-30px);
    }
    
    .contact-container {
        flex-direction: column;
    }
    
    .about-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hamburger {
        display: block;
    }
    
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        transform: translateY(0);
        margin-top: 50px;
    }
    
    .about-cards-grid {
        grid-template-columns: 1fr;
    }
}