:root {
    /* BEBOP PALETTE */
    --cb-red: #D6272F;
    --cb-orange: #E87421;
    --cb-yellow: #F2C230;
    --cb-navy: #0C1C2B;
    --cb-blue: #1E4E79;
    --cb-black: #000000;
    --cb-paper: #F5F2E8;
    --cb-teal: #0C4A43;
    
    --font-head: 'Roboto Slab', serif;
    --font-body: 'Fira Sans', sans-serif;
    --font-tech: 'JetBrains Mono', monospace;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--cb-paper);
    color: var(--cb-black);
    line-height: 1.5;
    overflow-x: hidden;
}

/* GRAIN TEXTURE (Noir Film Effect) */
.bg-grain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.08'/%3E%3C/svg%3E");
    mix-blend-mode: multiply;
}

/* BACKGROUND SPLIT (Intro Style) */
.bg-split {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(105deg, var(--cb-navy) 0%, var(--cb-navy) 45%, var(--cb-red) 45%, var(--cb-red) 55%, var(--cb-yellow) 55%, var(--cb-yellow) 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
    z-index: 10;
}

/* HEADER */
header {
    text-align: left;
    padding: 100px 0 60px;
    border-bottom: 4px solid var(--cb-black);
    margin-bottom: 60px;
    position: relative;
    background: var(--cb-paper);
    padding: 40px;
    border: 4px solid var(--cb-black);
    box-shadow: 15px 15px 0px var(--cb-black);
}

.header-jam {
    font-family: var(--font-tech);
    color: var(--cb-blue);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 10px;
}

h1 {
    font-family: var(--font-head);
    font-size: 5rem;
    font-weight: 900;
    color: var(--cb-black);
    text-transform: uppercase;
    line-height: 0.9;
    letter-spacing: -2px;
}

h1 span {
    color: var(--cb-red);
    display: block;
}

.subtitle {
    font-family: var(--font-tech);
    font-size: 1.2rem;
    background: var(--cb-black);
    color: var(--cb-yellow);
    display: inline-block;
    padding: 5px 15px;
    margin-top: 20px;
    transform: skew(-10deg);
}

/* SESSION HEADERS (Separators) */
.session-header {
    display: flex;
    align-items: baseline;
    margin: 60px 0 30px;
    border-bottom: 3px solid var(--cb-black);
    padding-bottom: 10px;
}

.session-id {
    font-family: var(--font-head);
    font-size: 3rem;
    color: var(--cb-blue);
    margin-right: 20px;
}

.session-title {
    font-family: var(--font-tech);
    font-size: 1.2rem;
    color: var(--cb-paper);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* GRID LAYOUTS */
.content-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
}

/* CARD STYLING (Hard Edges, Pop Art Shadow) */
.card {
    background: var(--cb-paper);
    border: 3px solid var(--cb-black);
    padding: 30px;
    position: relative;
    transition: transform 0.1s ease;
    box-shadow: 10px 10px 0px var(--cb-black);
}

.card:hover {
    transform: translate(-2px, -2px);
    box-shadow: 12px 12px 0px var(--cb-red);
}

.card h2 {
    font-family: var(--font-head);
    font-size: 1.8rem;
    text-transform: uppercase;
    margin-bottom: 20px;
    color: var(--cb-navy);
    border-left: 8px solid var(--cb-orange);
    padding-left: 15px;
}

.about-text {
    font-size: 1.1rem;
    margin-bottom: 15px;
    font-weight: 500;
}

/* SKILLS (Data Chips) */
.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    font-family: var(--font-tech);
    font-size: 0.85rem;
    background: var(--cb-navy);
    color: var(--cb-paper);
    padding: 8px 12px;
    border: 2px solid var(--cb-navy);
    text-transform: uppercase;
    transition: 0.2s;
    cursor: default;
}

.skill-tag:hover {
    background: var(--cb-yellow);
    color: var(--cb-black);
    border-color: var(--cb-black);
    transform: skew(-10deg);
}

/* TIMELINE */
.timeline-item {
    border-left: 3px solid var(--cb-black);
    padding-left: 20px;
    margin-bottom: 25px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 13px;
    height: 13px;
    background: var(--cb-red);
    border: 2px solid var(--cb-black);
}

.timeline-year {
    font-family: var(--font-tech);
    background: var(--cb-black);
    color: var(--cb-paper);
    padding: 2px 8px;
    display: inline-block;
    font-size: 0.8rem;
    margin-bottom: 5px;
}

.timeline-title {
    font-weight: 900;
    font-size: 1.2rem;
    color: var(--cb-navy);
}

/* PROJECT CARDS */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.project-card {
    background: var(--cb-navy);
    color: var(--cb-paper);
    border: 3px solid var(--cb-black);
    padding: 25px;
    position: relative;
    transition: 0.2s;
}

.project-card:hover {
    background: var(--cb-red);
    transform: translateY(-5px);
}

.project-number {
    font-family: var(--font-head);
    font-size: 3rem;
    color: rgba(255,255,255,0.2);
    position: absolute;
    top: 10px;
    right: 20px;
    line-height: 1;
}

.project-title {
    font-family: var(--font-head);
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--cb-yellow);
    position: relative;
    z-index: 2;
}

.project-desc {
    font-family: var(--font-tech);
    font-size: 0.9rem;
    opacity: 0.9;
    position: relative;
    z-index: 2;
}

/* CONTACT & BUTTONS */
.contact-section {
    background: var(--cb-black);
    padding: 60px;
    text-align: center;
    margin-top: 80px;
    border: 4px solid var(--cb-paper);
    outline: 4px solid var(--cb-black);
}

.contact-title {
    color: var(--cb-paper);
    font-family: var(--font-head);
    font-size: 3rem;
    margin-bottom: 10px;
}

.contact-subtitle {
    color: var(--cb-yellow);
    font-family: var(--font-tech);
    margin-bottom: 40px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.social-link {
    display: inline-block;
    background: var(--cb-black);
    color: var(--cb-yellow);
    text-decoration: none;
    padding: 15px 40px;
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 1.1rem;
    border: 3px solid var(--cb-red);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.1s cubic-bezier(0.1, 0.7, 1.0, 0.1);
    position: relative;
}

.social-link:hover {
    background: var(--cb-red);
    color: var(--cb-paper);
    transform: scale(1.05);
    box-shadow: 5px 5px 0 var(--cb-paper);
}

/* FOOTER */
footer {
    text-align: center;
    padding: 40px;
    background: var(--cb-paper);
    font-family: var(--font-tech);
    font-size: 0.9rem;
    color: var(--cb-navy);
    border-top: 3px solid var(--cb-black);
}

.end-quote {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
}

/* ANIMATIONS (Slide Blocks) */
@keyframes slideInBlock {
    0% { opacity: 0; transform: translateX(-50px); }
    100% { opacity: 1; transform: translateX(0); }
}

.card, .project-card, .header-jam {
    animation: slideInBlock 0.5s ease-out forwards;
}

.card:nth-child(2) { animation-delay: 0.1s; }
.project-card:nth-child(1) { animation-delay: 0.2s; }
.project-card:nth-child(2) { animation-delay: 0.3s; }
.project-card:nth-child(3) { animation-delay: 0.4s; }

/* RESPONSIVE (Mobile Optimizasyon) */
@media (max-width: 900px) {
    .content-grid, .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 20px 15px; /* Mobilde kenar boşluğunu azalt */
    }
    
    /* BACKGROUND ADJUSTMENT - RED STRIP FIXED */
    .bg-split {
        /* Mobilde de araya kirmizi serit eklendi */
        background: linear-gradient(180deg, var(--cb-navy) 0%, var(--cb-navy) 35%, var(--cb-red) 35%, var(--cb-red) 45%, var(--cb-yellow) 45%, var(--cb-yellow) 100%);
    }

    .header-jam {
        display: none;
    }
    
    /* HEADER MOBILE */
    header {
        padding: 30px 20px;
        box-shadow: 8px 8px 0px var(--cb-black); /* Mobilde gölgeyi küçült */
    }
    
    h1 { 
        font-size: 3rem; 
        letter-spacing: -1px;
    }
    
    .subtitle {
        font-size: 1rem;
        margin-top: 15px;
    }
    
    /* SESSION HEADERS MOBILE */
    .session-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
        margin: 40px 0 20px;
    }
    
    .session-id {
        font-size: 2rem;
        margin-right: 0;
        line-height: 1;
        border-bottom: 2px solid var(--cb-red); /* Mobilde ayrım çizgisi */
        margin-bottom: 5px;
    }
    
    .session-title {
        font-size: 1rem;
    }
    
    /* CARDS MOBILE */
    .card, .project-card {
        padding: 20px;
        box-shadow: 6px 6px 0px var(--cb-black); /* Kart gölgelerini küçült */
    }
    
    .card:hover, .project-card:hover {
        transform: none; /* Mobilde titremeyi engelle */
        box-shadow: 6px 6px 0px var(--cb-red);
    }
    
    .card h2 {
        font-size: 1.5rem;
    }
    
    .project-number {
        font-size: 2rem;
        top: 15px;
        right: 15px;
    }
    
    /* CONTACT SECTION MOBILE */
    .contact-section {
        padding: 40px 20px;
        margin-top: 50px;
        outline-width: 3px;
        border-width: 3px;
    }
    
    .contact-title {
        font-size: 2rem;
    }
    
    /* SOCIAL LINKS STACKED */
    .social-links {
        flex-direction: column;
        width: 100%;
        gap: 15px;
    }
    
    .social-link {
        width: 100%;
        text-align: center;
        padding: 15px;
        display: block;
    }
}