/* 
================================================================
   ME & VE ELEKTRİK - KURUMSAL WEB SİTESİ STİL DOSYASI (CSS)
   Tasarım Konsepti: Premium, Modern, Hızlı, Güven Veren ve Akıcı
   Yıl: 2026
================================================================
*/

/* 1. Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&family=Poppins:wght@300;400;500;600;700;800;900&display=swap');

/* 2. Global CSS Değişkenleri (Tasarım Sistemi) */
:root {
    /* Renk Paleti */
    --primary: #0F172A;         /* Slate Navy (Derin Lacivert) */
    --primary-light: #1E293B;   /* Slate Navy Açık (Kart & Koyu Bölüm Arka Planları) */
    --accent: #2563EB;          /* Elektrik Mavisi */
    --accent-hover: #1D4ED8;    /* Elektrik Mavisi Koyu */
    --accent-glow: rgba(37, 99, 235, 0.15);
    --secondary: #06B6D4;       /* Elektrik Yeşili/Siyan */
    --secondary-glow: rgba(6, 182, 212, 0.2);
    
    /* Arka Planlar */
    --bg-white: #FFFFFF;
    --bg-light: #F8FAFC;        /* Slate 50 (Açık Gri Arka Plan) */
    --bg-card: #FFFFFF;
    --bg-dark: #0F172A;
    
    /* Metin Renkleri */
    --text-dark: #0F172A;       /* Başlıklar & Koyu Metin */
    --text-muted: #64748B;      /* Slate 500 (Açıklama Metinleri) */
    --text-light: #F8FAFC;      /* Koyu Arka Plandaki Metinler */
    --text-gray-light: #94A3B8; /* Slate 400 */
    
    /* Gölgeler & Sınırlar */
    --border-color: #E2E8F0;    /* Slate 200 */
    --border-glow: rgba(37, 99, 235, 0.08);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.04), 0 4px 6px -4px rgba(15, 23, 42, 0.03);
    --shadow-premium: 0 20px 40px -15px rgba(15, 23, 42, 0.08);
    --shadow-glow: 0 0 20px 0 rgba(37, 99, 235, 0.15);
    
    /* Tipografi */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Manrope', sans-serif;
    
    /* Kenar Yuvarlama */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    /* Geçişler */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Sayfa Genişliği */
    --max-width: 1280px;
    --header-height: 80px;
}

/* 3. Genel Reset ve Temel Ayarlar */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

button, input, textarea, select {
    font-family: inherit;
    border: none;
    background: none;
}

/* Scrollbar Tasarımı */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: #CBD5E1;
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-light);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 4. Yerleşim Düzeni & Yardımcı Sınıflar (Layout Utilities) */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 7rem 0;
    position: relative;
    overflow: hidden;
}

.section-dark {
    background-color: var(--bg-dark);
    color: var(--text-light);
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.text-center { text-align: center; }
.w-100 { width: 100%; }

/* Başlık Grubu Tasarımı */
.section-title-group {
    max-width: 700px;
    margin: 0 auto 4rem auto;
    text-align: center;
}

.subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    margin-bottom: 0.75rem;
    position: relative;
    padding-left: 2rem;
}

.subtitle::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1.25rem;
    height: 2px;
    background-color: var(--accent);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-dark .section-title {
    color: var(--text-light);
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.05rem;
}

.section-dark .section-desc {
    color: var(--text-gray-light);
}

/* 5. Buton Tasarımları (Premium Buttons) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.875rem 2rem;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease;
    z-index: -1;
}

.btn:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-white);
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.5);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--accent);
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.2);
}

.btn-whatsapp {
    background-color: #25D366;
    color: var(--bg-white);
    box-shadow: 0 4px 14px 0 rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
    background-color: #128C7E;
    box-shadow: 0 6px 20px 0 rgba(37, 211, 102, 0.4);
    transform: translateY(-2px);
}

.btn-light {
    background-color: var(--bg-white);
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.btn-light:hover {
    background-color: var(--bg-light);
    transform: translateY(-2px);
}

/* 6. Sticky Header & Nav */
.header-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-normal);
}

/* Scroll yapıldığındaki header hali */
.header-wrapper.scrolled {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-wrapper.scrolled .nav-link {
    color: rgba(255, 255, 255, 0.75);
}

.header-wrapper.scrolled .nav-link.active {
    color: var(--accent);
}

.header-wrapper.scrolled .nav-logo span {
    color: var(--bg-white);
}

.navbar {
    height: var(--header-height);
    padding: 0 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--accent);
}

.nav-logo span {
    color: var(--text-light);
    transition: var(--transition-fast);
}

.nav-logo-icon {
    width: 2.2rem;
    height: 2.2rem;
    color: var(--accent);
}

/* Nav Linkleri */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.925rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.75);
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition-fast);
}

.nav-link.active {
    color: var(--accent);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-link:hover {
    color: var(--accent);
}

.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Mobil Menü Butonu */
.mobile-menu-btn {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 26px;
    height: 2px;
    background-color: var(--text-light);
    transition: var(--transition-fast);
}

.header-wrapper.scrolled .mobile-menu-btn span {
    background-color: var(--text-light);
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--secondary));
    z-index: 1100;
    transition: width 0.1s ease-out;
}

/* 7. Hero Bölümü (Hero Section) */
.hero {
    min-height: 100vh;
    padding-top: calc(var(--header-height) + 2rem);
    display: flex;
    align-items: center;
    position: relative;
    background-color: var(--bg-dark);
    color: var(--text-light);
    overflow: hidden;
    z-index: 1;
}

/* İnteraktif Canvas Arka Planı */
.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    pointer-events: none;
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 30%, rgba(37, 99, 235, 0.08) 0%, rgba(15, 23, 42, 1) 70%);
    z-index: -1;
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero-title span {
    background: linear-gradient(135deg, #60A5FA 0%, #3B82F6 50%, #2563EB 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-gray-light);
    margin-bottom: 2.5rem;
    max-width: 580px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

/* Hero Sağ Taraf Görsel/İllüstrasyon Alanı */
.hero-image-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-container {
    width: 100%;
    max-width: 520px;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
}

.hero-image-container img {
    width: 100%;
    object-fit: cover;
    aspect-ratio: 4/3;
    filter: brightness(0.9);
    transition: var(--transition-slow);
}

.hero-image-container:hover img {
    transform: scale(1.05);
}

/* Dekoratif Işık Halkaları */
.hero-glow-1 {
    position: absolute;
    top: -10%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent) 0%, rgba(37, 99, 235, 0) 70%);
    opacity: 0.3;
    z-index: -1;
    filter: blur(40px);
    pointer-events: none;
}

.hero-glow-2 {
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--secondary) 0%, rgba(6, 182, 212, 0) 70%);
    opacity: 0.2;
    z-index: -1;
    filter: blur(50px);
    pointer-events: none;
}

/* 8. İstatistik Alanı (Stats Section) */
.stats {
    background-color: var(--primary);
    padding: 3rem 0;
    position: relative;
    z-index: 5;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem 1rem;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--bg-white);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #FFFFFF 0%, #E2E8F0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-title {
    font-size: 0.95rem;
    color: var(--text-gray-light);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.1em;
}

/* 9. Hakkımızda Bölümü (About Section) */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 5rem;
    align-items: center;
}

.about-image-wrapper {
    position: relative;
}

.about-image {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-premium);
    z-index: 2;
    position: relative;
}

.about-image-decor {
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100px;
    height: 100px;
    border-left: 5px solid var(--accent);
    border-top: 5px solid var(--accent);
    z-index: 1;
}

.about-experience-badge {
    position: absolute;
    bottom: 30px;
    right: -30px;
    background-color: var(--accent);
    color: var(--bg-white);
    padding: 1.5rem 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
    z-index: 3;
    text-align: center;
}

.about-experience-years {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.25rem;
}

.about-experience-text {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.about-content h2 {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.about-lead {
    font-size: 1.125rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.about-text {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

/* Hakkımızda Liste Öğeleri */
.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.about-feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--primary);
}

.about-feature-icon {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--accent);
}

/* 10. Hizmetlerimiz Bölümü (Services Section) */
.services-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Hizmet Kartı */
.service-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-icon-box {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-sm);
    background-color: var(--bg-light);
    color: var(--accent);
    margin-bottom: 1.75rem;
    transition: var(--transition-normal);
}

.service-icon {
    width: 1.8rem;
    height: 1.8rem;
    transition: var(--transition-normal);
}

.service-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
    transition: var(--transition-fast);
}

.service-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-features-list {
    margin-bottom: 1.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.service-features-list li {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-features-list li::before {
    content: '';
    width: 4px;
    height: 4px;
    background-color: var(--accent);
    border-radius: 50%;
}

/* Hover Efektleri */
.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-premium);
    border-color: rgba(37, 99, 235, 0.2);
}

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

.service-card:hover .service-icon-box {
    background-color: var(--accent);
    color: var(--bg-white);
    box-shadow: 0 8px 16px -4px rgba(37, 99, 235, 0.4);
}

.service-card:hover .service-title {
    color: var(--accent);
}

/* 11. Neden Biz Bölümü (Why Us Section) */
.why-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.why-card {
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 2.5rem 2rem;
    text-align: center;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.why-icon-box {
    width: 4.5rem;
    height: 4.5rem;
    border-radius: var(--radius-full);
    background-color: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.2);
    color: var(--accent);
    margin: 0 auto 1.5rem auto;
    transition: var(--transition-normal);
}

.why-icon {
    width: 2rem;
    height: 2rem;
}

.why-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--bg-white);
}

.why-desc {
    color: var(--text-gray-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

.why-card:hover {
    transform: translateY(-8px);
    background-color: rgba(255, 255, 255, 0.05);
    border-color: rgba(37, 99, 235, 0.4);
    box-shadow: var(--shadow-glow);
}

.why-card:hover .why-icon-box {
    background-color: var(--accent);
    color: var(--bg-white);
    transform: rotate(360deg);
}

/* 12. Çalışma Süreci (Working Process Section) */
.process-timeline-wrapper {
    position: relative;
    padding: 2rem 0;
}

/* Yatay Çizgi */
.process-timeline-line {
    position: absolute;
    top: 50px;
    left: 10%;
    width: 80%;
    height: 4px;
    background-color: var(--border-color);
    z-index: 1;
}

.process-timeline-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background-color: var(--accent);
    transition: width 1s ease-in-out;
}

.process-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
    position: relative;
    z-index: 2;
}

.process-step {
    text-align: center;
}

.process-step-node {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background-color: var(--bg-white);
    border: 4px solid var(--border-color);
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    margin: 0 auto 1.5rem auto;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.process-step-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
    transition: var(--transition-fast);
}

.process-step-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    max-width: 180px;
    margin: 0 auto;
}

/* Aktif veya Görünür Durum */
.process-step.active .process-step-node {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 0 8px rgba(37, 99, 235, 0.1), var(--shadow-md);
    transform: scale(1.05);
}

.process-step.active .process-step-title {
    color: var(--accent);
}

/* 13. Hizmet Verdiğimiz Alanlar (Sectors Served) */
.sectors-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.sector-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.sector-icon-box {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-full);
    background-color: var(--bg-light);
    color: var(--accent);
    margin: 0 auto 1.25rem auto;
    transition: var(--transition-normal);
}

.sector-icon {
    width: 1.6rem;
    height: 1.6rem;
}

.sector-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
}

.sector-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.sector-card:hover .sector-icon-box {
    background-color: var(--accent);
    color: var(--bg-white);
}

/* 14. Galeri Bölümü (Gallery Section - Masonry) */
.gallery-filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.5rem;
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--accent);
    border-color: var(--accent);
    color: var(--bg-white);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* Masonry Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    min-height: 400px;
}

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

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

/* Overlay Açıklama Alanı */
.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem 1.5rem 1.5rem 1.5rem;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(15, 23, 42, 0.9) 100%);
    color: var(--bg-white);
    opacity: 0;
    transform: translateY(10px);
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.gallery-item-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.gallery-item-category {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--secondary);
}

.gallery-item-zoom {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-full);
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
    color: var(--bg-white);
    opacity: 0;
    transform: scale(0.8);
    transition: var(--transition-normal);
    cursor: pointer;
}

.gallery-item-zoom svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* Hover Durumları */
.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

.gallery-item:hover .gallery-item-overlay {
    opacity: 1;
    transform: translateY(0);
}

.gallery-item:hover .gallery-item-zoom {
    opacity: 1;
    transform: scale(1);
}

.gallery-item-zoom:hover {
    background-color: var(--accent);
}

/* Lightbox Modal */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.95);
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    pointer-events: all;
}

.lightbox-content {
    max-width: 90%;
    max-height: 80%;
    position: relative;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    color: var(--bg-white);
    text-align: center;
    margin-top: 1.5rem;
    font-size: 1.2rem;
    font-family: var(--font-heading);
    font-weight: 600;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    color: var(--bg-white);
    cursor: pointer;
    font-size: 2rem;
    transition: var(--transition-fast);
}

.lightbox-close:hover {
    color: var(--accent);
    transform: rotate(90deg);
}

/* 15. Müşteri Yorumları (Testimonials Section) */
.testimonials-slider-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.testimonials-wrapper {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-slide {
    min-width: 100%;
    padding: 1rem;
    box-sizing: border-box;
    text-align: center;
}

.testimonial-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 3.5rem 3rem;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--border-color);
    position: relative;
}

.testimonial-quote-icon {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-full);
    background-color: var(--accent);
    color: var(--bg-white);
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.3);
}

.testimonial-quote-icon svg {
    width: 1.5rem;
    height: 1.5rem;
}

.testimonial-stars {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    color: #FBBF24;
    margin-bottom: 1.5rem;
}

.testimonial-stars svg {
    width: 1.25rem;
    height: 1.25rem;
}

.testimonial-comment {
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--primary);
    font-style: italic;
    margin-bottom: 2rem;
}

.testimonial-author {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.testimonial-author-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
}

/* Slider Kontrolleri */
.testimonial-dots {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2rem;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background-color: var(--border-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.dot.active {
    width: 24px;
    background-color: var(--accent);
}

/* 16. Sık Sorulan Sorular (Accordion FAQ) */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition-normal);
}

.faq-header {
    padding: 1.5rem 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-fast);
}

.faq-question {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    padding-right: 1.5rem;
}

.faq-icon-wrapper {
    width: 1.75rem;
    height: 1.75rem;
    border-radius: var(--radius-full);
    background-color: var(--bg-light);
    color: var(--text-muted);
    transition: var(--transition-normal);
    flex-shrink: 0;
}

.faq-icon-wrapper svg {
    width: 0.875rem;
    height: 0.875rem;
    transition: var(--transition-normal);
}

/* Akordeon Açık Durumu */
.faq-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-content {
    padding: 0 2rem 1.5rem 2rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.faq-item.active {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}

.faq-item.active .faq-header {
    color: var(--accent);
}

.faq-item.active .faq-icon-wrapper {
    background-color: var(--accent);
    color: var(--bg-white);
    transform: rotate(180deg);
}

/* 17. İletişim Bölümü (Contact Section) */
.contact-grid {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
}

/* İletişim Formu */
.contact-form-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-premium);
    border: 1px solid var(--border-color);
}

.contact-form-title {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group-full {
    grid-column: span 2;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 0.875rem 1.25rem;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--accent);
    background-color: var(--bg-white);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

/* İletişim Bilgileri */
.contact-info-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.contact-info-card {
    background-color: var(--primary-light);
    border-radius: var(--radius-lg);
    padding: 3rem;
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-info-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    color: var(--bg-white);
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
}

.contact-info-icon-box {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--accent);
    transition: var(--transition-fast);
}

.contact-info-item:hover .contact-info-icon-box {
    background-color: var(--accent);
    color: var(--bg-white);
}

.contact-info-icon {
    width: 1.3rem;
    height: 1.3rem;
}

.contact-info-content h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--bg-white);
}

.contact-info-content p, .contact-info-content a {
    font-size: 0.95rem;
    color: var(--text-gray-light);
}

.contact-info-content a:hover {
    color: var(--accent);
}

/* Google Maps Iframe */
.map-container {
    width: 100%;
    height: 350px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-premium);
    margin-top: 4rem;
    border: 1px solid var(--border-color);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* Form Durum Bildirimleri */
.form-notification {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    display: none;
    font-weight: 600;
}

.form-notification.success {
    background-color: #DEF7EC;
    color: #03543F;
    border: 1px solid #BCF0DA;
}

.form-notification.error {
    background-color: #FDE8E8;
    color: #9B1C1C;
    border: 1px solid #FBD5D5;
}

/* 18. Footer */
.footer {
    background-color: var(--primary);
    color: var(--text-light);
    padding: 5rem 0 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-col-about p {
    color: var(--text-gray-light);
    margin: 1.5rem 0 2rem 0;
    font-size: 0.925rem;
}

.footer-socials {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-sm);
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-light);
    transition: var(--transition-fast);
}

.social-icon svg {
    width: 1.15rem;
    height: 1.15rem;
}

.social-icon:hover {
    background-color: var(--accent);
    color: var(--bg-white);
    transform: translateY(-3px);
}

.footer-col-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--bg-white);
    position: relative;
    padding-bottom: 0.75rem;
}

.footer-col-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background-color: var(--accent);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-gray-light);
    font-size: 0.925rem;
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 0.25rem;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.925rem;
    color: var(--text-gray-light);
}

.footer-contact-item svg {
    width: 1.1rem;
    height: 1.1rem;
    color: var(--accent);
    flex-shrink: 0;
}

/* Telif Hakkı (Copyright) */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-gray-light);
}

/* 19. Sabit Butonlar (Floating Widgets) */
.floating-widgets {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    z-index: 999;
}

.floating-btn {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-full);
    color: var(--bg-white);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: var(--transition-normal);
}

.floating-btn svg {
    width: 1.6rem;
    height: 1.6rem;
}

.floating-btn:hover {
    transform: scale(1.1) translateY(-3px);
}

.float-whatsapp {
    background-color: #25D366;
}

.float-whatsapp:hover {
    box-shadow: 0 12px 30px rgba(37, 211, 102, 0.4);
}

.float-phone {
    background-color: var(--accent);
    display: none; /* Masaüstünde varsayılan olarak gizli */
}

.float-phone:hover {
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.4);
}

.float-totop {
    background-color: var(--primary-light);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
}

.float-totop.active {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

/* 20. Scroll Giriş Animasyonları Sınıfları */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.92);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-active {
    opacity: 1;
    transform: translate(0) scale(1);
}

/* Sırayla beliren elementler (Staggering delay) */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* 21. Mobil Uyumlu Tasarım (Responsive Media Queries) */

@media (max-width: 1200px) {
    .hero-title { font-size: 3rem; }
    .about-grid { gap: 3rem; }
}

@media (max-width: 1024px) {
    :root {
        --header-height: 70px;
    }
    
    .section { padding: 5rem 0; }
    
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-desc { margin-left: auto; margin-right: auto; }
    .hero-cta { justify-content: center; }
    .hero-image-container { max-width: 450px; margin: 0 auto; }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .stat-item {
        border-right: none;
    }
    .stat-item:nth-child(odd) {
        border-right: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3.5rem;
    }
    .about-image-wrapper { max-width: 480px; margin: 0 auto; }
    .about-experience-badge { right: -15px; }
    
    .process-timeline-line { display: none; }
    .process-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .process-step-node {
        width: 80px;
        height: 80px;
        font-size: 1.4rem;
        border-width: 3px;
    }
    
    .sectors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    /* Mobil Navigasyon Menüsü */
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 350px;
        height: 100vh;
        background-color: var(--primary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
        z-index: 1000;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        color: var(--text-light);
        font-size: 1.1rem;
    }
    
    .nav-logo span {
        color: var(--primary);
    }
    
    .header-wrapper.scrolled .nav-logo span {
        color: var(--bg-white);
    }
    
    .navbar .btn-primary {
        display: none; /* Mobilde header butonu gizle */
    }
    
    /* Mobil Menü Açıkken Logo Durumu */
    .nav-menu.active ~ .mobile-menu-btn span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
        background-color: var(--text-light);
    }
    .nav-menu.active ~ .mobile-menu-btn span:nth-child(2) {
        opacity: 0;
    }
    .nav-menu.active ~ .mobile-menu-btn span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
        background-color: var(--text-light);
    }
    
    .hero-title { font-size: 2.4rem; }
    .hero-desc { font-size: 1rem; }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .stat-item {
        border-right: none !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding-bottom: 1.5rem;
    }
    .stat-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    .service-card {
        padding: 2rem;
    }
    
    .why-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .sectors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-card {
        padding: 2rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    .form-group-full {
        grid-column: span 1;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Mobil Sabit Butonlar */
    .float-phone {
        display: flex; /* Mobilde aramayı göster */
    }
    
    .floating-widgets {
        bottom: 1.5rem;
        right: 1.5rem;
        gap: 0.75rem;
    }
    
    .floating-btn {
        width: 3.25rem;
        height: 3.25rem;
    }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .hero-cta { flex-direction: column; width: 100%; }
    .hero-cta .btn { width: 100%; }
    .about-experience-badge {
        position: relative;
        bottom: 0;
        right: 0;
        margin-top: 1.5rem;
        width: 100%;
    }
    .sectors-grid {
        grid-template-columns: 1fr;
    }
}