/* Modern Variables */
:root {
    /* Ana Renkler - Daha yumuşak mavi tonları */
    --primary: #1e40af;          /* Koyu mavi */
    --primary-dark: #1e3a8a;     /* Daha koyu mavi */
    --primary-light: #3b82f6;    /* Açık mavi */
    --primary-lighter: #60a5fa;  /* En açık mavi */
    --primary-soft: #dbeafe;     /* Çok açık mavi (arka plan için) */
    
    /* Nötr Renkler - Daha sıcak gri tonları */
    --gray-50: #f8fafc;          /* En açık gri */
    --gray-100: #f1f5f9;         /* Çok açık gri */
    --gray-200: #e2e8f0;         /* Açık gri */
    --gray-300: #cbd5e1;         /* Orta açık gri */
    --gray-400: #94a3b8;         /* Orta gri */
    --gray-500: #64748b;         /* Orta koyu gri */
    --gray-600: #475569;         /* Koyu gri */
    --gray-700: #334155;         /* Daha koyu gri */
    --gray-800: #1e293b;         /* Çok koyu gri */
    --gray-900: #0f172a;         /* En koyu gri */
    
    /* Durum Renkleri - Daha yumuşak tonlar */
    --success: #059669;          /* Yeşil */
    --success-light: #10b981;    /* Açık yeşil */
    --info: #0284c7;             /* Mavi */
    --info-light: #0ea5e9;       /* Açık mavi */
    --warning: #d97706;          /* Turuncu */
    --warning-light: #f59e0b;    /* Açık turuncu */
    --danger: #dc2626;           /* Kırmızı */
    --danger-light: #ef4444;     /* Açık kırmızı */
    
    /* Tema Renkleri */
    --body-bg: var(--gray-50);
    --body-color: var(--gray-700);
    --heading-color: var(--gray-900);
    --link-color: var(--primary);
    --link-hover-color: var(--primary-dark);
    --border-color: var(--gray-200);
    --card-bg: white;
    --footer-bg: var(--gray-900);
    --footer-color: var(--gray-400);
    --footer-link-color: var(--gray-300);
    --footer-link-hover: white;
    
    /* Diğer değişkenler aynı kalacak */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --transition: all 0.3s ease;
    --border-radius: 0.5rem;
    --border-radius-sm: 0.25rem;
    --border-radius-lg: 0.75rem;
    --box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --box-shadow-hover: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Base Styles */
body {
    font-family: var(--font-family);
    color: var(--body-color);
    background-color: var(--body-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--heading-color);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.display-1, .display-2, .display-3, .display-4 {
    font-weight: 800;
    color: var(--heading-color);
}

.lead {
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--gray-600);
}

/* Navigation */
.navbar {
    padding: 1rem 0;
    transition: var(--transition);
    background: linear-gradient(to right, var(--primary), var(--primary-dark)) !important;
    box-shadow: var(--box-shadow);
}

.navbar.scrolled {
    background: white !important;
}

.navbar-brand {
    font-weight: 800;
    font-size: var(--font-size-2xl);
}

.navbar-brand .site-title {
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.navbar.scrolled .navbar-brand .site-title {
    color: var(--primary);
}

.navbar-brand img {
    max-height: 40px;
    width: auto;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    color: rgba(255, 255, 255, 0.9) !important;
    transition: var(--transition);
}

.navbar.scrolled .nav-link {
    color: var(--gray-700) !important;
}

.nav-link:hover, .nav-link:focus {
    color: white !important;
    background: rgba(255, 255, 255, 0.15);
}

.navbar.scrolled .nav-link:hover, 
.navbar.scrolled .nav-link:focus {
    color: var(--primary) !important;
    background: var(--primary-soft);
}

.nav-link.active {
    color: white !important;
    background: rgba(255, 255, 255, 0.2);
}

.navbar.scrolled .nav-link.active {
    color: var(--primary) !important;
    background: var(--primary-soft);
}

/* Top Bar */
.top-bar {
    background: var(--gray-900) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar a {
    color: var(--gray-400) !important;
    transition: var(--transition);
}

.top-bar a:hover {
    color: white !important;
}

.social-links a {
    color: var(--gray-400);
    transition: var(--transition);
}

.social-links a:hover {
    color: white;
    transform: translateY(-2px);
}

/* Page Header / Hero */
.page-header {
    position: relative;
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    overflow: hidden;
    margin-bottom: 3rem;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
                linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
                linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
                linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    opacity: 0.1;
}

.page-header h1 {
    color: white;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
    position: relative;
}

.page-header .lead {
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    margin-bottom: 0;
    position: relative;
}

.page-header .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
    position: relative;
}

.page-header .breadcrumb-item {
    color: rgba(255, 255, 255, 0.8);
}

.page-header .breadcrumb-item a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.page-header .breadcrumb-item a:hover {
    color: var(--primary-lighter);
}

.page-header .breadcrumb-item.active {
    color: rgba(255, 255, 255, 0.6);
}

.page-header .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.5);
}

/* Ana Sayfa Hero */
.hero {
    position: relative;
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    overflow: hidden;
    margin-bottom: 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
                linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
                linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
                linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    opacity: 0.1;
}

.hero h1 {
    color: white;
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
    position: relative;
}

.hero .lead {
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    margin-bottom: 2rem;
    position: relative;
}

/* Cards */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    background: var(--card-bg);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-0.5rem);
    box-shadow: var(--box-shadow-hover);
    border-color: var(--primary-light);
}

.card-img-top {
    height: 240px;
    object-fit: cover;
}

.card-title {
    color: var(--heading-color);
    font-weight: 700;
    margin-bottom: 1rem;
}

.card-text {
    color: var(--gray-600);
}

/* Services */
.service-card {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: var(--box-shadow-hover);
    border-color: var(--primary-light);
    background: var(--primary-soft);
}

.service-card i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.service-card:hover i {
    color: var(--primary-dark);
}

.service-card h3 {
    color: var(--heading-color);
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--gray-600);
}

/* Projects */
.project-card {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.project-card .overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, var(--primary-dark), var(--primary));
    opacity: 0;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.project-card:hover .overlay {
    opacity: 1;
}

.project-card .overlay-content {
    color: white;
    text-align: center;
    transform: translateY(20px);
    transition: var(--transition);
}

.project-card:hover .overlay-content {
    transform: translateY(0);
}

/* Contact Form */
.form-control {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--body-color);
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.15);
}

.form-label {
    color: var(--gray-700);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

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

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
    border-width: 2px;
}

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

/* Footer */
.footer {
    background: var(--footer-bg);
    color: var(--footer-color);
    padding: 4rem 0 2rem;
}

.footer h5 {
    color: white;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--footer-link-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--footer-link-hover);
    padding-left: 0.5rem;
}

.footer .social-links a {
    color: var(--footer-link-color);
    font-size: 1.5rem;
    margin-right: 1rem;
    transition: var(--transition);
}

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

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    background: var(--primary);
    color: white;
}

.back-to-top:hover {
    background: var(--primary-dark);
    color: white;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

/* Utilities */
.section-padding {
    padding: 5rem 0;
}

.bg-light {
    background-color: var(--gray-100) !important;
}

.text-primary {
    color: var(--primary) !important;
}

.text-muted {
    color: var(--gray-500) !important;
}

/* Responsive */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: var(--card-bg);
        padding: 1rem;
        border-radius: var(--border-radius);
        border: 1px solid var(--border-color);
        box-shadow: var(--box-shadow);
        margin-top: 1rem;
    }
    
    .navbar-collapse .nav-link {
        color: var(--gray-700) !important;
    }
    
    .navbar-collapse .nav-link:hover,
    .navbar-collapse .nav-link:focus,
    .navbar-collapse .nav-link.active {
        color: var(--primary) !important;
        background: var(--primary-soft);
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .section-padding {
        padding: 3rem 0;
    }
}

@media (max-width: 767.98px) {
    .card-img-top {
        height: 200px;
    }
    
    .service-card {
        padding: 1.5rem;
    }
    
    .footer {
        text-align: center;
    }
    
    .footer .social-links {
        justify-content: center;
        margin-top: 1.5rem;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
    }
    
    .page-header {
        padding: 4rem 0;
        text-align: center;
    }
    
    .page-header .breadcrumb {
        justify-content: center;
    }
    
    .hero {
        padding: 4rem 0;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Services Page Styles */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.service-card {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.service-card .card-img-wrapper {
    position: relative;
    padding-top: 66.67%; /* 3:2 aspect ratio */
    overflow: hidden;
}

.service-card .card-img-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.service-card .card-body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.service-card .service-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
    color: var(--primary-dark);
}

.service-card .card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--heading-color);
}

.service-card .card-text {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-features {
    background: var(--gray-50);
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    margin-top: auto;
}

.service-features h5 {
    font-size: 1rem;
    color: var(--gray-700);
    margin-bottom: 0.75rem;
}

.service-features ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.service-features li {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    color: var(--gray-600);
    font-size: 0.9rem;
}

.service-features li i {
    color: var(--primary);
    margin-right: 0.5rem;
    font-size: 1rem;
}

.service-card .card-footer {
    padding: 1rem 1.5rem;
    background: transparent;
    border-top: 1px solid var(--gray-100);
}

.service-card .btn {
    width: 100%;
    padding: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Service Detail Page */
.service-detail {
    padding: 4rem 0;
}

.service-detail-header {
    margin-bottom: 3rem;
}

.service-detail-header .service-icon {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.service-detail-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--heading-color);
}

.service-detail-header .lead {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.service-detail-content {
    margin-bottom: 3rem;
}

.service-detail-content img {
    width: 100%;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.service-detail-content h2 {
    font-size: 2rem;
    margin: 2rem 0 1rem;
    color: var(--heading-color);
}

.service-detail-content p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.service-feature-item {
    background: var(--gray-50);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.service-feature-item i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.service-feature-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--heading-color);
}

.service-feature-item p {
    color: var(--gray-600);
    margin: 0;
}

.service-cta {
    background: var(--primary-soft);
    padding: 3rem;
    border-radius: var(--border-radius);
    text-align: center;
    margin-top: 4rem;
}

.service-cta h2 {
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.service-cta p {
    color: var(--gray-700);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.service-cta .btn {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Responsive Adjustments */
@media (max-width: 991.98px) {
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

    .service-detail-header h1 {
        font-size: 2rem;
    }

    .service-features-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 767.98px) {
    .service-card .card-img-wrapper {
        padding-top: 56.25%; /* 16:9 aspect ratio */
    }

    .service-detail-header {
        text-align: center;
    }

    .service-detail-header .service-icon {
        font-size: 3rem;
    }

    .service-cta {
        padding: 2rem;
    }
}