margin-bottom: 20px;
    background-color: var(--bg);
    color: var(--txt);
    overflow-x: hidden;
}

/* 1. HERO ALANI */
.cs-hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    padding-top: 80px;
}

.cs-hero-bg-text {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100vw;
    overflow: hidden;
    opacity: 0.03;
    pointer-events: none;
    z-index: 0;
}

.cs-hero-track {
    display: flex;
    width: max-content;
    animation: csMarquee 60s linear infinite;
}

.cs-hero-track span {
    font-size: clamp(100px, 15vw, 250px);
    font-weight: 800;
    line-height: 1;
    white-space: nowrap;
    padding-right: 50px;
}

@keyframes csMarquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.cs-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.cs-hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 20px;
    background: var(--grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
}

.cs-hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--txt-muted);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 400;
}

.cs-scroll-indicator {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    z-index: 1;
    opacity: 0.6;
}

.cs-scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--accent) 0%, transparent 100%);
}

.cs-scroll-text {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* 2. İÇERİK BÖLÜMÜ (STICKY LAYOUT) */
.cs-content-section {
    padding: 100px 0;
    position: relative;
}

.cs-container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 100px;
    align-items: start;
}

/* Sidebar Nav */
.cs-sidebar {
    position: sticky;
    top: 150px;
}

.cs-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.cs-nav-link {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--txt-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.nav-indicator {
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: width 0.3s ease;
}

.cs-nav-link:hover,
.cs-nav-link.active {
    color: var(--txt);
    transform: translateX(10px);
}

.cs-nav-link.active .nav-indicator {
    width: 24px;
}

/* Kategori İçerikleri */
.cs-category-block {
    margin-bottom: 200px;
    position: relative;
}

.cs-category-block:last-child {
    margin-bottom: 0;
}

/* Büyük Arka Plan Kelimesi */
.cs-cat-bg-word {
    position: absolute;
    top: -50px;
    left: -50px;
    font-size: clamp(80px, 12vw, 200px);
    font-weight: 800;
    color: var(--txt);
    opacity: 0.02;
    z-index: 0;
    pointer-events: none;
    user-select: none;
    white-space: nowrap;
}

/* Kategori Header & Micro-interactions */
.cs-category-header {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: center;
    margin-bottom: 80px;
    position: relative;
    z-index: 1;
}

.cs-category-label {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    display: block;
    margin-bottom: 16px;
}

.cs-category-headline {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 20px;
    text-transform: uppercase;
    color: var(--txt);
    max-width: 600px;
}

.cs-category-desc {
    font-size: 1.15rem;
    color: var(--txt-muted);
    max-width: 600px;
    line-height: 1.6;
}

/* DENEY ALANLARI (Micro-interactions) */
.cs-experiment-area {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg, 12px);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Frontend Grid Exp */
.exp-frontend .exp-browser {
    width: 200px;
    height: 140px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    transition: width 0.4s ease;
}
.exp-frontend:hover .exp-browser { width: 140px; }
.exp-b-header { height: 16px; border-bottom: 1px solid rgba(255,255,255,0.1); display: flex; gap: 4px; padding: 0 6px; align-items: center; }
.exp-b-header span { width: 6px; height: 6px; border-radius: 50%; background: rgba(255,255,255,0.2); }
.exp-b-body { flex: 1; padding: 6px; }
.exp-grid { display: grid; grid-template-areas: "h h" "m s"; grid-template-columns: 1fr 40px; grid-template-rows: 20px 1fr; gap: 6px; height: 100%; transition: all 0.4s ease; }
.exp-frontend:hover .exp-grid { grid-template-areas: "h" "m" "s"; grid-template-columns: 1fr; grid-template-rows: 20px 1fr 20px; }
.exp-grid > div { background: rgba(255,255,255,0.05); border-radius: 4px; }
.eg-header { grid-area: h; } .eg-main { grid-area: m; background: rgba(200,255,61,0.1) !important; } .eg-sidebar { grid-area: s; }

/* Backend Flow Exp */
.exp-backend { display: flex; align-items: center; gap: 8px; }
.exp-node { padding: 8px 12px; font-size: 0.7rem; font-weight: bold; border-radius: 6px; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); }
.exp-path { display: flex; gap: 4px; }
.exp-path span { width: 4px; height: 4px; border-radius: 50%; background: rgba(255,255,255,0.2); }
.exp-backend:hover .client { background: rgba(200,255,61,0.2); border-color: rgba(200,255,61,0.5); }
.exp-backend:hover .exp-path span { animation: pathPing 1s infinite; background: rgba(200,255,61,0.5); }
@keyframes pathPing { 0% { opacity: 0; } 50% { opacity: 1; } 100% { opacity: 0; } }

/* AI Exp */
.exp-ai { display: flex; align-items: center; gap: 12px; }
.exp-ai-input { width: 24px; height: 24px; border-radius: 50%; border: 2px dashed rgba(255,255,255,0.2); }
.exp-ai-process { display: flex; flex-direction: column; gap: 4px; }
.exp-ai-process span { width: 40px; height: 4px; background: rgba(255,255,255,0.1); border-radius: 2px; }
.exp-ai-output { width: 24px; height: 24px; border-radius: 4px; background: rgba(255,255,255,0.1); }
.exp-ai:hover .exp-ai-process span { background: rgba(200,255,61,0.5); width: 60px; transition: width 0.3s ease; }

/* Motion Exp */
.exp-motion { position: relative; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.exp-motion .exp-circle { position: absolute; width: 60px; height: 60px; border-radius: 50%; background: var(--accent); filter: blur(20px); opacity: 0; transition: opacity 0.3s ease, transform 0.1s ease; pointer-events: none; }
.exp-motion:hover .exp-circle { opacity: 0.3; }
.exp-motion .exp-text { font-size: 1.5rem; font-weight: 800; letter-spacing: 0.2em; z-index: 1; transition: transform 0.3s ease, letter-spacing 0.3s ease; }
.exp-motion:hover .exp-text { transform: scale(1.1); letter-spacing: 0.4em; }

/* 3. BÜYÜK TİPOGRAFİK BECERİ SATIRLARI */
.cs-skills-list {
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

.cs-row {
    position: relative;
    border-bottom: 1px solid var(--border);
    padding: 0;
    cursor: default;
}

.cs-row:first-child {
    border-top: 1px solid var(--border);
}

.cs-row-inner {
    display: grid;
    grid-template-columns: 2fr 3fr 2fr 180px;
    align-items: center;
    gap: 24px;
    padding: 40px 0;
    transition: padding 0.4s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.4s ease;
}

.cs-row::before {
    content: '';
    position: absolute;
    top: 0;
    left: -20px;
    right: -20px;
    bottom: 0;
    background: linear-gradient(90deg, transparent, var(--glow-sm), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

.cs-row:hover::before {
    opacity: 1;
}

.cs-row:hover .cs-row-inner {
    padding-left: 20px;
}

.cs-row-col {
    display: flex;
    flex-direction: column;
}

.cs-row-name {
    flex-direction: row;
    align-items: center;
    gap: 16px;
}

.cs-row-icon {
    font-size: 1.6rem;
    color: var(--txt-dim);
    transition: color 0.4s ease;
}

.cs-row:hover .cs-row-icon {
    color: var(--row-accent, var(--accent));
}

.cs-row-name h3 {
    font-size: clamp(1.4rem, 2vw, 2rem);
    font-weight: 500;
    margin: 0;
    transition: color 0.4s ease;
}

.cs-row-usage {
    font-size: 1.05rem;
    color: var(--txt-muted);
    line-height: 1.5;
}

.cs-row:hover .cs-row-usage {
    color: var(--txt);
}

.cs-row-status span {
    display: inline-block;
    font-size: 0.85rem;
    padding: 6px 12px;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    color: var(--txt-muted);
    white-space: nowrap;
}

.cs-row-action {
    text-align: right;
    align-items: flex-end;
}

.cs-action-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--txt);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cs-row:hover .cs-action-link {
    opacity: 1;
    transform: translateX(0);
}

.cs-action-link:hover {
    color: var(--row-accent, var(--accent));
}

.cs-action-link svg {
    transition: transform 0.3s ease;
}

.cs-action-link:hover svg {
    transform: translate(4px, -4px);
}

/* RESPONSIVE */
@media (max-width: 1200px) {
    .cs-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .cs-sidebar {
        position: relative;
        top: 0;
        z-index: 10;
        background: var(--bg);
        padding: 20px 0;
        border-bottom: 1px solid var(--border);
        margin-bottom: 40px;
    }
    
    .cs-nav-list {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 10px;
        scroll-snap-type: x mandatory;
        scrollbar-width: none;
    }
    
    .cs-nav-link {
        white-space: nowrap;
        scroll-snap-align: start;
        padding: 10px 16px;
        background: var(--border);
        border-radius: 20px;
    }
    
    .cs-nav-link .nav-indicator {
        display: none;
    }
    
    .cs-nav-link.active {
        transform: translateX(0);
        background: var(--accent);
        color: #fff;
    }
    
    .cs-category-block {
        margin-bottom: 100px;
    }
}

@media (max-width: 992px) {
    .cs-category-header {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .cs-experiment-area {
        display: none; /* Mobilde deney alanını gizle */
    }
    
    .cs-row-inner {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 30px 0;
    }
    
    .cs-row:hover .cs-row-inner {
        padding-left: 0;
    }
    
    .cs-row-status span {
        background: transparent;
        padding: 0;
        color: var(--accent);
    }
    
    .cs-row-action {
        align-items: flex-start;
    }
    
    .cs-action-link {
        opacity: 1;
        transform: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .cs-hero-track { animation: none; }
    .cs-row-inner, .cs-action-link, .cs-row::before { transition: none; transform: none !important; }
}

/* 5. MANIFESTO & THE LAB */
.cs-container-narrow {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 40px;
}

.cs-manifesto {
    padding: 120px 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(circle at center, var(--glow-sm) 0%, transparent 60%);
}

.cs-manifesto-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--txt);
    margin-bottom: 60px;
}

.manifesto-line-simple {
    display: inline-block;
    color: var(--txt);
}

.cs-manifesto-signature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.sig-line {
    width: 2px;
    height: 40px;
    background-color: var(--accent);
    margin-bottom: 10px;
}

.sig-name {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.2em;
}

.sig-role {
    font-size: 0.85rem;
    color: var(--txt-muted);
    letter-spacing: 0.1em;
}

.cs-lab-section {
    padding: 150px 0;
    border-top: 1px solid var(--border);
}

.cs-lab-header {
    text-align: center;
    margin-bottom: 80px;
}

.cs-lab-eyebrow {
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    color: var(--accent);
    text-transform: uppercase;
    display: block;
    margin-bottom: 16px;
}

.cs-lab-header h2 {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: 24px;
}

.cs-lab-header p {
    font-size: 1.2rem;
    color: var(--txt-muted);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* TERMINAL (The Lab) */
.cs-lab-terminal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    font-family: "JetBrains Mono", "Courier New", Courier, monospace;
}

.cs-term-header {
    background: rgba(255,255,255,0.03);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border);
    position: relative;
}

.cs-term-controls {
    display: flex;
    gap: 8px;
    position: absolute;
}

.cs-term-controls .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.term-title {
    width: 100%;
    text-align: center;
    font-size: 0.85rem;
    color: var(--txt-muted);
}

.cs-term-body {
    padding: 30px;
    font-size: 1rem;
    line-height: 1.8;
}

.term-line {
    margin-bottom: 12px;
}

.term-line .prompt {
    color: var(--accent);
    margin-right: 12px;
}

.term-line.output {
    color: var(--txt-muted);
    margin-bottom: 24px;
    padding-left: 30px;
}

.accent-text {
    color: var(--accent);
    font-weight: bold;
}

.typing-container {
    display: flex;
    align-items: center;
}

.typing-text {
    color: var(--txt);
    white-space: pre-wrap;
}

.cursor {
    display: inline-block;
    width: 10px;
    height: 1.2em;
    background-color: var(--txt);
    margin-left: 4px;
    vertical-align: middle;
    animation: cursorBlink 1s infinite;
}

@keyframes cursorBlink {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

/* FOOTER CTA SECTION */
.cs-transition-section {
    padding: 100px 0;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    border-top: 1px solid var(--border);
}

.cs-transition-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.cs-transition-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 30px;
    position: relative;
    text-transform: uppercase;
}

.text-fill-effect {
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.4);
    background-image: linear-gradient(90deg, #fff, #fff);
    background-size: 0% 100%;
    background-repeat: no-repeat;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-fill-blue {
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.4);
    background-image: linear-gradient(90deg, #38bdf8, #38bdf8);
    background-size: 0% 100%;
    background-repeat: no-repeat;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: background-size 0.1s ease;
}

.word-anim {
    display: inline-block;
    opacity: 0; /* JS ile animasyon olacak */
}

.cs-transition-link {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    color: var(--txt);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease, transform 0.3s ease;
}

.cs-transition-link:hover {
    color: #38bdf8;
    transform: translateX(10px);
}