:root {
    --grad-1: #007AFF;
    --grad-2: #34C759;
    --grad-3: #FF9F0A;
    --light-bg: #F2F2F7;
    --text-dark: #1C1C1E;
    --color-light-bg: #fbfbfc;
    --color-light: #ffffff;
    --color-text: #000000;
    --color-secondary-text: #424245;
    --color-border: #e0e0e3;
    --color-accent-blue: #007AFF;
    --color-accent-green: #34C47B;
    --color-accent-orange: #FF9500;
    --color-accent-purple: #AF52DE;
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji";
    --color-primary: #007AFF;
    --card-bg: #FFFFFF;
    --border-color: rgba(0,0,0,0.08);
    --shadow-light: 0 4px 12px rgba(0,0,0,0.04), 0 1px 4px rgba(0,0,0,0.02);
    --shadow-hover: 0 10px 30px rgba(0,0,0,0.1), 0 2px 8px rgba(0,0,0,0.05);
    --color-bg: #f5f5f7;
    --color-card-bg: #ffffff;
    --color-border: #d2d2d7;
    --timeline-height: 550px;
    --card-width: 400px;
    --gap-size: 40px;
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.04);
    --transition-speed: 1s;
    --text-main: #1D1D1F;
    --text-secondary: #6A6A6F;
    --main-gradient: linear-gradient(135deg, #FF6F91 0%, #FFB63B 100%);
    --water-gradient: linear-gradient(135deg, #007aff 0%, #00d4ff 100%);
    --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.08);
    --modal-scrim-fill: rgba(0, 0, 0, 0.48);
    --modal-scrim-blur: 20px;
    --modal-gray: #f0f0f0;
}

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

body {
    font-family: var(--font-primary);
    background: var(--light-bg);
    color: var(--text-dark);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* HERO ve Animasyonlar */
.hero {
    height: 100vh;
    width: 100%;
    /* display: flex;
    align-items: flex-end; */
    padding-bottom: 25vh;
    /* background: linear-gradient(160deg, #ffffff 0%, #f2f2f7 45%, #e6e6eb 100%); */
    /* background-color: #fff; */
    background-color: #FAFBF6;
    position: relative;
}

.hero-title-wrapper {
    width: 100%;
    /* display: none; */
    /* max-width: 750px; */
    /* flex: 6; */
    /* margin-left: 5vw; */
    animation: fadeInUp 1.2s ease both;
}
.hero-image-wrapper{
    flex: 6;
    padding: 1em;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100%;
    width: 100%;
}
.hero-image-wrapper img{
    /* max-width: 100%; */
    max-width: 1100px;
    border-radius: 4px;
}

.hero-title {
    /* font-size: clamp(3rem, 8vw, 6rem); */
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.04em;
    text-align: center;
}

.hero-title span {
    /* display: block; */
    /* background: linear-gradient(90deg, var(--grad-1), var(--grad-2), var(--grad-3)); */
    font-size: 1em;
    color:#222;
    /* -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text; */
}

@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}


.gradient-text {
    background-image: var(--main-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}
.gradient-text.blue {
    background-image: var(--water-gradient);
}

/* Structure */
.container-esys-sistem {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 32px;
}
.container-esys-sistem-esys-hero{
    max-width: 100%;
}
.esys-section {
    padding: 150px 0;
}

/* Hero Section - YENİ TASARIM */
.esys-hero {
    /* height: 90vh; */
    background-color: var(--bg-primary);
    display: flex; 
    align-items: center;
    padding: 70px;
    border-bottom: 1px solid #eee;
}

.esys-hero .container-esys-sistem-grid { 
    display: grid;
    grid-template-columns: 1fr 1fr; /* İki eşit sütun */
    gap: 50px;
    align-items: center;
    height: 100%; 
}

.esys-hero-content {
    text-align: left; 
}

.esys-hero h1 {
    /* Başlık boyutu küçültüldü */
    font-size: clamp(2.5rem, 4.5vw, 3.2rem); 
    margin-bottom: 30px;
}

.esys-hero p {
    max-width: 600px; 
    margin: 0 0 40px 0; 
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    font-weight: 500;
    color: var(--text-secondary);
}

.esys-hero-image-placeholder {
    min-height: 500px;
    /* background: linear-gradient(145deg, #e0e0e0, #f8f8f8); */
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.5rem;
    /* box-shadow: 0 15px 30px rgba(0, 0, 0, 0.05); */
}
/* END Hero Section */


/* Feature Split Section (Alternating Background) */
.section-secondary {
    background-color: var(--bg-secondary);
}

.grid-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
}

.feature-text h2 {
    font-size: clamp(2.5rem, 4vw, 3.8rem);
    margin-bottom: 20px;
}
.feature-text p {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* Visual Placeholder (Sleek Box) */
.visual-box {
    min-height: 400px;
    background: linear-gradient(145deg, #e0e0e0, #f8f8f8);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.3rem;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.05);
}

/* Hardware Cards (Elevated Design) */
.card-grid-esys {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.product-card-esys {
    background: var(--bg-primary);
    padding: 40px;
    border-radius: 30px;
    box-shadow: var(--shadow-soft);
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.4s ease;
}

.product-card-esys:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}
.product-card-esys h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}
.product-card-esys p {
    font-size: 1.1rem;
}

.card-visual {
    height: 200px;
    background: var(--bg-secondary);
    border-radius: 15px;
    margin-top: 30px;
    /* border: 1px solid #eee; */
}

/* Responsive Adjustments */
@media (max-width: 1000px) {
    .esys-hero .container-esys-sistem-grid,
    .grid-split {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }
    .esys-hero-content {
        order: 2; /* Mobilde metin alta gelsin */
    }
    .esys-hero-image-placeholder {
        order: 1; /* Mobilde görsel üste gelsin */
    }
    .feature-text { /* Ortalanmış metin için */
        text-align: center;
    }
}
@media (max-width: 600px) {
    .nav-bar { padding: 0 20px; }
    .container-esys-sistem { padding: 0 20px; }
    .esys-section{padding: 0;}
    /* section { padding: 100px 0; } */
}

/* Animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 1.2s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================
    ORTAK STİLLER
========================================================== */
.animated {
    opacity: 0;
    transform: translateY(20px); 
}

.animated.show {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 1s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                transform 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.section-header {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 50px;
    color: var(--text-dark);
    letter-spacing: -0.03em;
}

/* ==========================================================
    KART BÖLÜMÜ 1 (NEDEN)
========================================================== */
.cards-section {
    padding: 80px 40px;
    background: var(--light-bg);
    text-align: center;
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr); 
    gap: 20px; 
    max-width: 1400px;
    margin: 0 auto;
}

.card {
    background-color: var(--card-bg);
    border-radius: 16px; 
    padding: 35px;
    box-shadow: var(--shadow-light);
    transition: transform 0.4s ease, box-shadow 0.4s ease, border 0.4s ease;
    border: 1px solid transparent; 
    display: flex;
    flex-direction: column;
    text-align: left;
    min-height: 300px; 
}

.card:hover {
    transform: translateY(-5px); 
    box-shadow: var(--shadow-hover);
    border: 1px solid var(--grad-1); 
}

.card-icon {
    font-size: 2.2rem; 
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background-color: rgba(0, 122, 255, 0.1); 
    color: var(--grad-1); 
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-weight: 500;
    line-height: 1; 
}

/* Özelleştirilmiş İkon Renkleri */
.card:nth-child(1) .card-icon { background-color: rgba(255, 159, 10, 0.1); color: var(--grad-3); } 
.card:nth-child(2) .card-icon { background-color: rgba(52, 199, 89, 0.1); color: var(--grad-2); } 
.card:nth-child(3) .card-icon { background-color: rgba(255, 59, 48, 0.1); color: #FF3B30; } 
.card:nth-child(4) .card-icon { background-color: rgba(0, 122, 255, 0.1); color: var(--grad-1); } 


.card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-dark);
    letter-spacing: -0.02em;
}

.card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #666; 
}

/* ==========================================================
    BİLEŞENLER BÖLÜMÜ
========================================================== */

.components-section {
    background-color: var(--card-bg); 
    padding: 100px 40px 0 40px;
    text-align: center;
}

/* Gradient Başlık Stili */
.components-section > h2 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 50px;
    letter-spacing: -0.04em;
    background: linear-gradient(90deg, var(--grad-1), var(--grad-2)); 
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block; 
}
.header-text{
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 50px;
    letter-spacing: -0.04em;
    background: linear-gradient(90deg, var(--grad-1), var(--grad-2)); 
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block; 
}

.components-wrapper {
    max-width: 1400px;
    margin: auto;
    display: flex;
    align-items: center;
    gap: 60px;
    text-align: left;
}

.component-visual-container {
    flex: 1;
    min-width: 40%;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.component-visual {
    width: 100%;
    border-radius: 18px; 
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.15); 
    border: 1px solid rgba(0,0,0,0.1); 
    background-color: var(--light-bg);
}

.component-visual img {
    width: 100%;
    height: auto;
    display: block;
}

.visual-caption {
    font-size: 0.9rem;
    color: #888;
    margin-top: 15px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.component-content {
    flex: 1.2;
    text-align: left;
}

.component-content > p {
    font-size: clamp(1.1rem, 1.8vw, 1.4rem);
    line-height: 1.6;
    color: #444;
    margin-bottom: 40px;
}

.component-list {
    list-style: none;
    padding-left: 0;
    display: flex;
    flex-direction: column;
    gap: 25px; 
}

.component-list li {
    position: relative;
    padding-left: 0;
}

.list-title-wrapper {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
}

.list-icon {
    font-size: 1.5rem;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background-color: var(--grad-1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.list-icon.hardware {
        background-color: var(--grad-3); 
}
    .list-icon.software {
        background-color: var(--grad-2); 
}

.list-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.02em;
}

.list-description {
    font-size: 1rem; 
    font-weight: 400; 
    color: #666; 
    padding-left: 47px; /* İkon genişliği + margin kadar içeriden başlar */
    line-height: 1.5;
}

/* ==========================================================
    DİJİTAL İKİZ GÖRSEL BÖLÜMÜ STİLLERİ
========================================================== */
.digital-twin-section {
    padding: 100px 40px;
    background: var(--card-bg); 
    text-align: center;
}

.dt-header {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 50px; 
    color: var(--text-dark);
    letter-spacing: -0.04em;
    max-width: 1400px;
    margin: 0 auto 50px auto;
}

/* Ana Yan Yana Konteyner */
.dt-content-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: 40px; 
    text-align: left;
    align-items: flex-start; 
}

/* Metin ve Liste Alanı (Sol Taraf) */
.dt-text-content {
    flex: 1;
    min-width: 45%; 
}

.dt-text-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #444;
    margin-bottom: 20px;
}

/* Tablo Stili */
.dt-table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0 35px 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    font-size: 0.95rem;
}

.dt-table th, .dt-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
}

.dt-table th {
    background-color: var(--light-bg);
    color: var(--text-dark);
    font-weight: 600;
}

.dt-table tr:hover {
    background-color: #f9f9f9;
}

/* GÜNCEL LİSTE STİLİ */
.dt-list-inline {
    list-style: none;
    padding-left: 0;
    margin-bottom: 20px;
}

.dt-list-inline li {
    position: relative;
    padding-left: 25px;
    line-height: 1.8; /* Satır aralığı artırıldı */
    color: #555;
    font-size: 1.05rem;
}
.dt-list-inline li::before {
    content: "\f058"; /* FA Check Circle Icon */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--grad-2); /* Yeşil Check */
    position: absolute;
    left: 0;
    top: 0;
    font-size: 1.1rem;
}
/* Görsel Galeri Alanı (Sağ Taraf) */
.rect-packer-container {
    flex: 1;
    min-width: 50%;
    display: grid;
    gap: 10px; 
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 150px; 
    /* box-shadow: var(--shadow-hover); */
    border-radius: 18px;
    overflow: hidden;
    /* border: 1px solid var(--border-color);  */
    align-self: stretch; 
}

.dt-visual {
    background-color: #e0e0e0;
    overflow: hidden;
    border-radius: 8px; 
    transition: transform 0.3s ease, opacity 0.3s ease;
    cursor: zoom-in;
    position: relative;
}

.dt-visual:hover {
    transform: scale(1.02);
    opacity: 0.95;
    z-index: 5;
}

.dt-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover; 
    display: block;
}

/* Görsel Boyutlandırma (Grid Span) - Masaüstü Düzeni */
.dt-visual:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.dt-visual:nth-child(2) { grid-column: span 1; grid-row: span 2; }
.dt-visual:nth-child(3) { grid-column: span 1; grid-row: span 1; }
.dt-visual:nth-child(4) { grid-column: span 1; grid-row: span 1; }
.dt-visual:nth-child(5) { grid-column: 1 / 5; grid-row: span 1; } /* Altta tam satır */


/* ==========================================================
    KURULUM ADIMLARI BÖLÜMÜ STİLLERİ
========================================================== */
.steps-section {
    padding: 100px 40px;
    background: var(--light-bg); 
    text-align: center;
}

.steps-header {
    font-size: clamp(2rem, 4vw, 3.5rem); 
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--text-dark);
    letter-spacing: -0.04em;
    max-width: 900px; 
    margin-left: auto; 
    margin-right: auto; 
}

.steps-subtitle {
    font-size: clamp(1.1rem, 1.8vw, 1.4rem);
    line-height: 1.6;
    color: #666;
    margin-bottom: 60px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.steps-container {
    display: grid;
    /* YENİ: Grid ayarı daha esnek ve dengeli hale getirildi */
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
    align-items: stretch; /* Kartların eşit boyda uzamasını sağlar */
}

.step-card {
    background-color: var(--card-bg);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow-light);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: left;
    position: relative;
    overflow: hidden;
    border: 1px solid transparent; 
    height: 100%; /* İçeriği az olan kartın da uzamasını sağlar */
}

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

.step-icon {
    font-size: 1.5rem;
    width: 40px; 
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    line-height: 1;
}

.step-icon.step-1 { background-color: rgba(0, 122, 255, 0.15); color: var(--grad-1); } 
.step-icon.step-2 { background-color: rgba(52, 199, 89, 0.15); color: var(--grad-2); } 
.step-icon.step-3 { background-color: rgba(255, 159, 10, 0.15); color: var(--grad-3); } 
.step-icon.step-4 { background-color: rgba(255, 59, 48, 0.15); color: #FF3B30; } 


.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: rgba(0, 122, 255, 0.08); 
    position: absolute;
    top: 5px;
    right: 15px;
    z-index: 1;
    line-height: 1;
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
    position: relative;
    z-index: 2;
    letter-spacing: -0.01em;
}

.step-description {
    font-size: 1rem;
    line-height: 1.6;
    color: #555;
    position: relative;
    z-index: 2;
    margin-bottom: 15px;
}

/* YENİ: DETAYLI ADIM LİSTESİ STİLİ */
.step-detail-list {
    list-style: none;
    padding-left: 0;
    margin-top: 15px;
    font-size: 0.95rem;
    color: #444;
    flex-grow: 1; /* Listeyi uzatır */
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.step-detail-list li {
    position: relative;
    padding-left: 20px;
    line-height: 1.5;
}
.step-detail-list li::before {
    content: "\f058"; /* FA Check Circle Icon */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--grad-2); /* Yeşil Check */
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 0.9rem;
}


/* CTA Bölümü */
.cta-section {
    text-align: center;
    padding: 80px 40px;
    background: var(--card-bg); 
}

/* Animasyon Gecikmeleri */
.step-card.animated:nth-child(1) { transition-delay: 0.1s; }
.step-card.animated:nth-child(2) { transition-delay: 0.2s; }
.step-card.animated:nth-child(3) { transition-delay: 0.3s; }
.step-card.animated:nth-child(4) { transition-delay: 0.4s; }
.neutral-comparison-table tbody tr {
    transition: background-color 0.2s ease; /* Yumuşak geçiş */
}
.neutral-comparison-table tbody tr:hover td {
    /* Hover olduğunda tüm hücrelerin arka plan rengini değiştir */
    background-color: #F0F0F0 !important; /* Çok açık gri vurgu */
}
/* Zorluk Alanı Sütunu (1. Sütun) için sabit arka planı koru */
.neutral-comparison-table tbody tr td:first-child {
    background-color: #FAFAFA; /* Sabit tutulan hafif gri */
}
.neutral-comparison-table tbody tr:hover td:first-child {
    background-color: #E6E6E6 !important; /* Hover'da daha koyu gri yap */
}

        /* Ana Düzen */
.section {
    padding: 80px 20px;
    max-width: var(--max-width);
    margin: 0 auto;
}

/* Ana İçerik Gridi */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

/* Kart Stili */
.benefit-card {
    background-color: var(--color-light);
    border-radius: 20px;
    padding: 35px;
    border: 1px solid var(--color-border);
    transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                box-shadow 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    /* opacity: 0; */
    transform: translateY(30px);
    will-change: transform, opacity;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03); /* Çok hafif varsayılan gölge */
}

.benefit-card:hover {
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.1);
}

/* Kart Görünür Animasyonu */
.benefit-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* İkon Vurgu Alanı (Şık Daire) */
.icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    /* Hafif şeffaf arka plan */
    background-color: rgba(0, 0, 0, 0.05); 
}

/* İkon ve Metrik Renklendirme */
.fa-icon {
    font-size: 1.8rem;
    line-height: 1;
}

/* Renk Sınıfları */
.blue { color: var(--color-accent-blue); }
.green { color: var(--color-accent-green); }
.orange { color: var(--color-accent-orange); }
.purple { color: var(--color-accent-purple); }
.gray { color: var(--color-secondary-text); }

/* Metrik Vurgu Stili */
.metric {
    font-size: 3rem;
    font-weight: 700; /* Daha kalın ve vurgulu */
    display: block;
    margin-bottom: 10px;
    line-height: 1;
    letter-spacing: -0.05em;
}

.data-row{
    border-top: 1px solid #E5E5EA;
}
.data-row td:first-child{
    padding: 1em;
    font-weight: 400;
    background-color: #eee;
}
.data-row td:first-child span:last-child{
    font-weight: 600;
}
.data-row td:nth-child(2){
    padding: 20px; color: #424245; background-color: #FAFAFA;text-align: left;
}
.data-row td:last-child{
    padding: 20px; color: #1C1C1E; font-weight: 500; border-left: 1px solid #E5E5EA;text-align: left;
}
.td-icon{
    display: block;
    margin-bottom: 4px;
}

.metric sup {
    font-size: 40%;
    vertical-align: top;
    opacity: 0.7;
    font-weight: 400;
}

.benefit-card h3 {
    font-size: 1.5rem; 
    font-weight: 600;
    margin-top: 10px;
    margin-bottom: 10px;
    color: var(--color-text);
}

.benefit-card p {
    color: var(--color-secondary-text);
    font-size: 1rem;
    line-height: 1.6;
}

/* Animasyon Gecikmeleri */
.benefit-card:nth-child(1) { transition-delay: 0.0s; }
.benefit-card:nth-child(2) { transition-delay: 0.1s; }
.benefit-card:nth-child(3) { transition-delay: 0.2s; }
.benefit-card:nth-child(4) { transition-delay: 0.3s; }
.benefit-card:nth-child(5) { transition-delay: 0.4s; }
.benefit-card:nth-child(6) { transition-delay: 0.5s; }
    
/* Sonuç (CTA) Bölümü */
.summary {
    background-color: var(--color-light-bg);
    text-align: center;
    padding-top: 60px;
    padding-bottom: 100px;
}

.summary h2 {
    font-size: clamp(2rem, 3.5vw, 3.2rem);
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.02em;
    max-width: 850px;
    margin: 0 auto 40px;
    line-height: 1.2;
}

.summary .cta {
    display: inline-flex;
    align-items: center;
    padding: 14px 35px;
    background-color: var(--color-accent-blue);
    color: var(--color-light);
    text-decoration: none;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 122, 255, 0.4);
}

.summary .cta:hover {
    background-color: #0066cc; 
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(0, 122, 255, 0.55);
}

.cta i {
    margin-right: 10px;
}

.timeline-wrapper {
    /* Scroll mesafesi için yükseklik */
    height: 200vh; 
    padding: 100px 0;
    position: relative;
}

.timeline-sticky {
    position: sticky;
    top: 50%;
    transform: translateY(-20%);
    width: 100%;
    height: var(--timeline-height);
    overflow: hidden; 
    display: flex;
    align-items: center;
    /* justify-content: center; */
}

.timeline-container {
    display: flex;
    gap: var(--gap-size); 
    /* KRİTİK CSS DÜZELTMESİ: İlk kartın ortada görünmesini sağlamak için padding: 50vw - (Kart Genişliğinin Yarısı) */
    padding-left: calc(50vw - (var(--card-width) / 2));
    padding-right: calc(50vw - (var(--card-width) / 2)); /* Sona da padding eklenir */
    will-change: transform;
}

.step-card-timeline {
    min-width: var(--card-width); 
    max-width: var(--card-width);
    height: 500px;
    background-color: var(--color-card-bg);
    padding: 30px;
    border-radius: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--color-border);
    transition: all 0.5s ease-in-out;
    /* opacity: 0.5; */
    transform: scale(0.95);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* ODAKLANMIŞ KART STİLLERİ */
.step-card-timeline.focused {
    opacity: 1;
    transform: scale(1);
    border-color: var(--color-primary);
    box-shadow: 0 10px 40px rgba(0, 112, 201, 0.15);
}

.step-card-timeline h2 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.step-card-timeline p, .step-card-timeline ul {
    font-size: 0.95rem;
    color: #3c3c43;
}

.step-card-timeline ul {
    list-style: none;
    padding-left: 0;
    margin-top: 10px;
    text-align: justify;
}

.step-card-timeline ul li {
    position: relative;
    padding-left: 20px;
    font-size: 0.9rem;
    margin-bottom: 6px;
}

.step-card-timeline ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}
.esys-image-container{
    /* background-color: var(--card-bg); */
    margin-top: 3em;
    padding: 5em 10em;
}
.esys-image{
    max-width: 100%;
}


.left-content {
    padding-right: 20px;
}

.remote-control-card {
    max-width: 1000px;
    margin: 0 auto;
    background: var(--bg-primary);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
    padding: 40px;
    display: grid;
    grid-template-columns: 1fr 1fr; /* Sol: Metin/Özellikler, Sağ: Görsel */
    gap: 50px;
    border: 1px solid #EDEDED;
    align-items: center;
}

.left-content h2 {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 15px;
    background-image: var(--water-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.left-content > p { /* Ana özet paragrafı */
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.mobile-app-info {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    padding: 10px 0;
    border-top: 1px solid #eee;
    margin-top: 10px;
}

/* Özellikler Listesi */
.feature-list {
    list-style: none;
    padding: 0;
    margin-top: 25px;
    display: grid;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
}

.feature-icon {
    width: 35px;
    height: 35px;
    min-width: 35px;
    background: rgba(0, 122, 255, 0.1); /* Hafif gradyan rengi */
    border-radius: 8px;
    margin-right: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: #007aff;
    font-weight: 700;
}

.feature-text strong {
    display: block;
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 2px;
}

.feature-text p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Sağ Kolon: Görsel Alanı */
.image-placeholder {
    min-height: 400px;
    /* background: linear-gradient(145deg, #e0e0e0, #f8f8f8); */
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.2rem;
    /* box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1); */
    position: relative;
    left: 10%;
    top: -15%;
}

.container-esys-sistem .grid-split  h2{
    font-size: 3em;
}

/* Önizleme Galerisi (Thumbnails) */
.gallery-thumbnails {
    display: flex;
    justify-content: center; 
    gap: 12px; /* Küçük resimler arası boşluk */
    padding-bottom: 20px;
}

.thumbnail-item {
    width: 70px; /* Küçük resim boyutu biraz küçültüldü */
    height: 70px;
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent; 
    opacity: 0.7; /* Seçili olmayanların opaklığı */
    transition: all 0.2s ease;
    background-color: #e9e9eb; /* Açık gri thumbnail arka planı */
}

.thumbnail-item img {
    width: 100%;
    height: 100%;
    object-fit: cover; 
    display: block;
}

.thumbnail-item.active {
    border-color: #007aff;
    opacity: 1; 
    transform: scale(1.05); 
    box-shadow: 0 0 0 1px #007aff;
}

.thumbnail-item:hover {
    opacity: 0.9;
}

.lightbox-modal {
    display: none; 
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    overflow: hidden;
    touch-action: none;
}

.lightbox-content {
    position: relative;
    margin: 0 auto;
    max-width: 90%;
    max-height: 90%;
    top: 50%;
    transform: translateY(-50%);
    text-align: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh; 
    display: block;
    margin: auto;
    border-radius: 8px;
    animation: fadeIn 0.3s;
}

.prev-btn, .next-btn {
    cursor: pointer;
    position: absolute;
    top: 50%;
    width: auto;
    padding: 16px;
    margin-top: -50px;
    color: white;
    font-weight: bold;
    font-size: 30px;
    transition: 0.6s ease;
    user-select: none;
    opacity: 0.8;
    background-color: rgba(0, 0, 0, 0.2);
    border: none;
}

.prev-btn {
    left: -50px; /* Resmi geçip sola doğru itilir */
    border-radius: 3px 0 0 3px;
}

.next-btn {
    right: -50px; /* Resmi geçip sağa doğru itilir */
    border-radius: 0 3px 3px 0;
}

.prev-btn:hover, .next-btn:hover {
    opacity: 1;
    background-color: rgba(0, 0, 0, 0.6); /* Hover'da daha belirgin hale gelir */
}

/* SISTEM BILESENLERI URUNLER */

.products-section{
    padding: 100px 5%;
    overflow: hidden;
    background-color: var(--card-bg);
}

.card-container {
    flex-shrink: 0;
    width: 350px;
    scroll-snap-align: start;
}

.gallery-wrapper {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
}

.gallery-header {
    font-size: 32px;
    font-weight: 600;
    color: #1d1d1f;
    margin-bottom: 20px;
}

.gallery-content-area {
    position: relative;
    margin-bottom: 60px;
}

.scroll-container {
    overflow-x: scroll;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 30px;
}

.card-set {
    display: flex;
    list-style: none;
    gap: 20px;
    width: max-content;
}

.card-option {
    background-color: #fff;
    border-radius: 18px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
    border: 1px solid #e8e8ed;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    position: relative;
}

.feature-card-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.feature-card-copy-container {
    padding: 30px 30px 0;
}

.feature-card-label {
    font-size: 14px;
    font-weight: 500;
    color: #6e6e73;
}

.feature-card-headline {
    font-size: 24px;
    font-weight: 600;
    color: #1d1d1f;
    line-height: 1.2;
    margin-bottom: 2em;
}

.feature-card-body {
    font-size: 17px;
    color: #1d1d1f;
    line-height: 1.4;
    margin-bottom: 20px;
    margin-top: 1em;
}

.card-control-optional {
    position: absolute;
    top: 25px;
    right: 25px;
    z-index: 10;
    background: none;
    border: none;
    cursor: pointer;
}

.feature-card-image-container {
    flex-grow: 1;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0 30px 20px 30px;
    min-height: 150px;
}

.image-product {
    max-width: 300px;
}

.tile-button {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background-color 0.2s;
    background-color: #f5f5f7;
}

.icon-control {
    width: 30px;
    height: 30px;
    fill: #6e6e73;
}

.paddlenav {
    position: absolute;
    bottom: -50px;
    right: 0px;
    display: flex;
    gap: 12px;
    pointer-events: none;
    z-index: 20;
}

.paddlenav-item {
    pointer-events: auto;
}

.paddlenav-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    border: 0;
    background-color: rgba(210, 210, 215, 0.64);
    cursor: pointer;
    transition: opacity 0.3s, background-color 0.3s, box-shadow 0.3s;
}

.paddlenav-arrow svg {
    width: 30px;
    height: 30px;
    fill: #1d1d1f;
}

/* SISTEM BILESENLERI URUNLER END */

/* MODAL */

.openModalBtn {
    padding: 12px 25px;
    background-color: var(--grad-1);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.2s;
    font-weight: 600;
}

.openModalBtn:hover {
    background-color: #0066d6;
}

.mdl-overlay {
    display: none; 
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    
    background-color: var(--modal-scrim-fill); 
    backdrop-filter: blur(var(--modal-scrim-blur)); 
    -webkit-backdrop-filter: blur(var(--modal-scrim-blur));
    
    justify-content: center;
    align-items: center;
    z-index: 1000;
    
    opacity: 0; 
    transition: opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94); 
}

.mdl-content {
    background-color: rgba(255, 255, 255, 0.9); 
    border-radius: 14px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2), 0 0 15px rgba(0, 0, 0, 0.05);
    padding: 30px;
    max-width: 70%; 
    width: 90%;
    position: relative;
    
    display: flex;
    gap: 30px;

    transform: scale(0.95);
    opacity: 0; 
    transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.mdl-overlay.open {
    display: flex;
    opacity: 1;
}

.mdl-overlay.open .mdl-content {
    opacity: 1;
    transform: scale(1); 
}

.image-column {
    flex: 0 0 40%;
    max-width: 40%;
    padding-right: 15px;
    text-align: center;
}

.text-column {
    flex: 1;
    min-width: 0;
}

.logo-placeholder {
    width: 100%;
    height: 100%; 
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 36px;
    font-weight: 700;
}

.closeModalBtn {
    position: absolute;
    top: 15px;
    right: 15px;
    z-index: 10;
    width: 32px;
    height: 32px;
    background-color: #222;
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    line-height: 1;
    font-size: 18px;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.2s, color 0.2s;
}

.closeModalBtn:hover {
    background-color: #111;
    color: #fff;
}

.text-column h2 {
    font-size: 32px; 
    font-weight: 700;
    margin: 0 0 15px 0;
    color: #1d1d1f;
}

.text-column p {
    font-size: 16px;
    line-height: 1.6;
    color: #3c3c43;
    margin-bottom: 25px;
}

.feature-list-2 {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
}

.feature-list-2 li {
    display: flex;
    align-items: flex-start;
    padding: 5px 0;
    font-size: 15px;
    line-height: 1.5;
    color: #333;
}

.check-icon {
    color: var(--grad-1); 
    font-size: 18px;
    font-weight: bold;
    margin-right: 10px;
    line-height: 1.5;
    flex-shrink: 0;
}

.modal-actions {
    margin-top: 25px;
    display: flex;
    justify-content: flex-end;
}

.action-button {
    border: none;
    padding: 12px 30px; 
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.2s ease-out;
    text-decoration: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1); 
}

.primary {
    background-color: var(--grad-1); 
    color: white;
}

.primary:hover {
    background-color: #0066d6;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2); 
    color: #fff;
}

.primary:active {
    transform: translateY(1px); 
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2); 
}
/* MODAL END */

@media (max-width: 1300px) {
    .cards-container{
        grid-template-columns: repeat(2, 1fr)
    }
    .hero-title span{
        font-size: 1.2em;
    }
    .feature-text,
    .feature-text strong,
    .mobile-app-info,
    .left-content > p{
        text-align: justify;
    }
    .esys-image-container{
        padding: 0;
    }
}

@media (max-width: 720px) {
    .cards-container{
        grid-template-columns: repeat(1, 1fr)
    }
    .mdl-content{
        max-width: 90%;
    }
}

/* Responsive */
@media (max-width: 900px) {
    .hero-image-wrapper img{
        max-width: 100%;
    }
   
    .remote-control-card {
        grid-template-columns: 1fr;
        padding: 30px;
    }
    .image-placeholder {
        min-height: 250px;
    }
}

@media (max-width: 1024px) {
    .neutral-comparison-table tbody tr td:first-child,
    .th-item,.image-column{
        display: none;
    }
    .feature-text h2{
        font-size: 2em;
    }
    .card-visual{
        height: 100%;
    }
    /* Dijital İkiz Alanı için özel ayar (yan yana durması için) */
    .dt-content-wrapper {
        flex-direction: column; /* Görsel ve metin alt alta */
        gap: 40px;
    }
    .dt-text-content, .rect-packer-container {
        min-width: 100%;
        width: 100%;
    }
    /* Metin içeriğini ortalamak için */
    .dt-text-content {
        text-align: center;
    }
    .dt-text-content p, .dt-list, .dt-table, .dt-list-inline {
        text-align: left; /* Metin, liste ve tablo sola hizalı kalsın */
        margin-left: auto;
        margin-right: auto;
        max-width: 100%;
    }

    .dt-table {
        width: 100%;
    }
    
    /* Kurulum Adımları Mobil: Eşit yükseklik kaldırılabilir. */
    .steps-container {
        align-items: flex-start;
    }
    .step-card {
        height: auto;
    }
}

@media (max-width: 900px) {
    .timeline-wrapper {
        height: auto;
        padding: 50px 0;
    }
    .timeline-sticky {
        /* Sticky özelliği ve overflow kaldırıldı */
        position: static;
        transform: none;
        height: auto;
        overflow: visible;
    }
    .timeline-container {
        /* Dikey akışa geçiş */
        flex-direction: column;
        padding: 0 20px; /* Kenar boşlukları */
        gap: 20px;
    }
    .step-card-timeline {
        min-width: 100%;
        max-width: 100%;
        height: auto;
        opacity: 1;
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .components-wrapper {
        flex-direction: column; 
        gap: 40px;
    }
    .component-visual-container {
        min-width: 100%;
    }
    .steps-container {
        grid-template-columns: 1fr; 
    }
    .cards-section, .components-section, .cta-section, .steps-section, .digital-twin-section {
        padding: 60px 20px;
    }
    
    /* Rect Packer Mobil Düzenlemesi */
    .rect-packer-container {
        grid-template-columns: repeat(2, 1fr); /* Mobil cihazlarda 2 sütun */
        grid-auto-rows: 120px;
        gap: 8px;
    }
    .dt-visual {
        /* Mobil cihazlarda tüm görseller 1x1 veya 2x1 gibi oranlanır */
        grid-column: span 1 !important; 
        grid-row: span 1 !important;  
        height: 120px;
    }
    
    .dt-table {
        /* Mobil küçük ekranlarda tablo sütunlarını alt alta yığabiliriz. */
        display: block;
    }
    .dt-table th, .dt-table td {
        display: block;
        width: 100%;
        box-sizing: border-box;
        border: none;
        text-align: left;
    }
    .dt-table tr {
        margin-bottom: 10px;
        display: block;
        border: 1px solid #ddd;
        border-radius: 8px;
        overflow: hidden;
    }
    .dt-table td:before {
        content: attr(data-label);
        font-weight: bold;
        margin-right: 10px;
    }
    .dt-table th {
        display: none; /* Başlıkları gizle */
    }
        .section {
        padding: 40px 15px;
    }
    .benefits-grid {
        gap: 20px;
    }
    .metric {
        font-size: 2.5rem;
    }
    .prev-btn, .next-btn {
        left: 5px; /* Sola yasla */
        right: 5px; /* Sağa yasla */
        font-size: 20px;
        padding: 10px;
        margin-top: -35px;
    }
    .next-btn {
        left: auto; /* next-btn için sol konumlandırmayı kaldır */
    }
    .product-gallery-container {
        padding: 0 10px;
    }
}

@media (max-width: 680px) {
    .esys-hero{
        padding: 30px;
    }
    .container-esys-sistem{
        display: flex;
        flex-direction: column-reverse;
    }
}

p{
    text-indent: 0;
    text-align: left;
}