:root {
    --bg: #0e1313;
    --surface: #151c1c;
    --surface-2: #1b2424;
    --border: rgba(255, 255, 255, 0.09);
    --text: #e8eeee;
    --text-2: #c3cdcd;
    --muted: #94a3a3;
    --accent: #11d6d6;
    --accent-hover: #3fe3e3;
    --accent-soft: rgba(17, 214, 214, 0.1);
    --accent-ink: #052626;
    --radius: 14px;
    --wrap: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 84px; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', 'Segoe UI', system-ui, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* --- Navigasyon --- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(14, 19, 19, 0.88);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.navbar .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.logo { font-weight: 800; font-size: 1.25rem; letter-spacing: 0.5px; color: var(--accent); text-decoration: none; }

.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }

.nav-links a {
    display: block;
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover, .nav-links a.current { color: var(--text); background: rgba(255, 255, 255, 0.05); }

.nav-links a.current { color: var(--accent); }

.nav-links .nav-btn { margin-left: 8px; background: var(--accent); color: var(--accent-ink); font-weight: 600; }

.nav-links .nav-btn:hover { background: var(--accent-hover); color: var(--accent-ink); }

.hamburger { display: none; width: 42px; height: 42px; padding: 0; background: none; border: 0; cursor: pointer; }

.hamburger span { display: block; width: 24px; height: 2px; margin: 5px auto; background: var(--text); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }

.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-overlay { display: none; }

/* --- Düğmeler --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

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

.btn.primary:hover { background: var(--accent-hover); }

.btn img { width: 18px; height: 18px; filter: invert(1); }

/* --- Bölümler --- */
section { padding: 96px 0; }

.section-head { margin-bottom: 40px; }

.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: 0.8rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; }

.section-head h2 { margin: 0; font-size: clamp(1.7rem, 3vw, 2.2rem); line-height: 1.2; letter-spacing: -0.5px; }

.section-head p { margin: 10px 0 0; max-width: 620px; color: var(--muted); }

/* --- Hero --- */
.hero { padding: 88px 0 72px; }

.hero-main { display: grid; grid-template-columns: minmax(0, 1fr) 400px; gap: 56px; align-items: center; }

.hero h1 { margin: 0 0 16px; font-size: clamp(2.3rem, 5.2vw, 3.7rem); line-height: 1.08; letter-spacing: -1.5px; }

.hero h1 span { color: var(--accent); }

.hero .lead { margin: 0 0 28px; max-width: 580px; color: var(--text-2); font-size: 1.12rem; line-height: 1.7; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Kod penceresi görünümlü profil kartı */
.code-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
    overflow: hidden;
}

.code-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; background: var(--surface-2); border-bottom: 1px solid var(--border); }

.code-bar i { width: 11px; height: 11px; border-radius: 50%; background: rgba(255, 255, 255, 0.16); }

.code-bar span { margin-left: 8px; color: var(--muted); font-size: 0.8rem; }

/* Etkileşimli terminal */
.terminal { font-family: 'Cascadia Code', Consolas, 'Courier New', monospace; font-size: 0.85rem; }

.term-screen { height: 300px; padding: 18px 20px; overflow-y: auto; line-height: 1.7; color: var(--text-2); }

.term-screen p { margin: 0 0 4px; }

.term-screen b { color: var(--text); }

.term-line { color: var(--text); }

.term-screen .prompt { color: var(--accent); font-weight: 700; }

.term-screen .caret { display: inline-block; width: 8px; height: 1em; margin-left: 2px; background: var(--accent); vertical-align: text-bottom; animation: caretBlink 0.9s steps(1) infinite; }

@keyframes caretBlink { 50% { opacity: 0; } }

.term-out { margin-top: 10px; animation: termIn 0.3s ease; }

@keyframes termIn { from { opacity: 0; transform: translateY(6px); } }

.term-screen .key { display: inline-block; min-width: 82px; color: #8fb8f2; }

.term-screen .dim { color: var(--muted); }

.term-screen a, .term-screen button { padding: 0; background: none; border: 0; color: var(--accent); font: inherit; text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }

.term-screen a:hover, .term-screen button:hover { color: #7ff0f0; }

.term-cmds { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 16px 16px; border-top: 1px solid var(--border); }

.term-cmds button {
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--muted);
    font: inherit;
    font-size: 0.8rem;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.term-cmds button::before { content: "$ "; color: var(--accent); }

.term-cmds button:hover { color: var(--text); border-color: rgba(17, 214, 214, 0.5); }

.term-cmds button[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 64px; padding: 0; list-style: none; }

.stats li { padding: 20px 22px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }

.stats strong { display: block; color: var(--accent); font-size: 1.6rem; line-height: 1.2; }

.stats span { color: var(--muted); font-size: 0.9rem; }

/* --- Öne çıkan projeler --- */
.featured { display: grid; gap: 28px; }

.feature {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.feature:hover { border-color: rgba(17, 214, 214, 0.55); transform: translateY(-3px); }

.feature:nth-child(even) .feature-media { order: 2; }

.feature-media {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 16px;
    min-height: 340px;
    padding: 36px 28px 0;
    background: linear-gradient(160deg, rgba(17, 214, 214, 0.16), rgba(17, 214, 214, 0.02) 75%);
    overflow: hidden;
}

.feature-media img { width: 150px; border-radius: 16px 16px 0 0; box-shadow: 0 12px 34px rgba(0, 0, 0, 0.5); }

.feature-media img:nth-child(2) { transform: translateY(26px); }
.feature-media img:nth-child(3) { transform: translateY(52px); }

.feature-media.web { align-items: center; padding: 32px; }

.feature-media.web img { width: 100%; border-radius: 10px; }

.feature-body { display: flex; flex-direction: column; justify-content: center; padding: 40px; }

.meta { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 0.82rem; }

.meta .year { color: var(--accent); font-weight: 700; }

.meta .type { padding: 2px 10px; border: 1px solid var(--border); border-radius: 999px; }

.feature-body h3 { margin: 14px 0 10px; font-size: 1.6rem; line-height: 1.2; letter-spacing: -0.4px; }

.feature-body p { margin: 0 0 18px; color: var(--text-2); }

.feature-body ul { margin: 0 0 22px; padding-left: 20px; color: var(--text-2); }

.feature-body li { margin-bottom: 6px; }

.feature-body li::marker { color: var(--accent); }

.tags { display: flex; flex-wrap: wrap; gap: 6px; }

.tags span { padding: 4px 10px; background: var(--accent-soft); border-radius: 6px; color: var(--accent); font-size: 0.76rem; font-weight: 500; }

.more { margin-top: 22px; color: var(--accent); font-size: 0.9rem; font-weight: 600; }

/* --- Diğer projeler --- */
.sub-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin: 72px 0 24px; }

.sub-head h3 { margin: 0; font-size: 1.3rem; }

.filters { display: flex; flex-wrap: wrap; gap: 8px; }

.filters button {
    padding: 7px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    font: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filters button:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.25); }

.filters button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }

.project-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 20px; }

.p-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.p-card[hidden] { display: none; }

.p-card:hover { border-color: rgba(17, 214, 214, 0.55); transform: translateY(-4px); }

.p-cover { height: 150px; overflow: hidden; background: linear-gradient(160deg, rgba(17, 214, 214, 0.14), rgba(17, 214, 214, 0.02) 70%); }

.p-cover img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }

.p-cover.phone img { width: 120px; height: auto; margin: 18px auto 0; border-radius: 12px 12px 0 0; box-shadow: 0 8px 22px rgba(0, 0, 0, 0.45); transition: transform 0.4s ease; }

/* Kare kapak görseli: kırpmadan, ortalı */
.p-cover.square img { width: auto; height: calc(100% - 20px); margin: 10px auto; object-fit: contain; border-radius: 10px; }

.p-card:hover .p-cover.phone img { transform: translateY(-6px); }

.p-body { display: flex; flex-direction: column; flex: 1; padding: 18px; }

.p-body h4 { margin: 10px 0 6px; font-size: 1.05rem; line-height: 1.3; }

.p-body p { margin: 0 0 14px; color: var(--muted); font-size: 0.88rem; line-height: 1.5; }

.p-body .tags { margin-top: auto; }

/* --- Hakkımda --- */
.alt { background: #111818; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.about-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 56px; }

.about-text p { margin: 0 0 16px; color: var(--text-2); font-size: 1.03rem; line-height: 1.75; }

.about-text strong { color: var(--text); }

.about-intro { display: flex; align-items: center; gap: 20px; margin-bottom: 24px; padding: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }

.avatar { flex: 0 0 auto; width: 88px; height: 88px; object-fit: cover; border: 1px solid rgba(17, 214, 214, 0.45); border-radius: 50%; }

.about-name { display: block; color: var(--text); font-size: 1.15rem; line-height: 1.3; }

.about-role { display: block; margin-top: 4px; color: var(--muted); font-size: 0.9rem; }

.focus-list { display: grid; gap: 12px; margin: 28px 0 0; padding: 0; list-style: none; }

.focus-list li { padding: 16px 18px; background: var(--surface); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 10px; }

.focus-list strong { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 2px; }

.focus-list em { padding: 1px 8px; background: var(--accent-soft); border-radius: 999px; color: var(--accent); font-size: 0.72rem; font-style: normal; font-weight: 600; }

.focus-list span { color: var(--muted); font-size: 0.9rem; }

.skill-groups { display: grid; gap: 22px; }

.skill-group h3 { margin: 0 0 10px; color: var(--muted); font-size: 0.8rem; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }

.chips span { padding: 6px 13px; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; font-size: 0.88rem; }

/* --- Zaman çizelgesi --- */
.timeline { position: relative; max-width: 760px; margin: 0; padding: 0; list-style: none; }

.timeline::before { content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: var(--border); }

.timeline li { position: relative; padding: 0 0 28px 40px; }

.timeline li:last-child { padding-bottom: 0; }

.timeline li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    width: 16px;
    height: 16px;
    border: 2px solid var(--accent);
    border-radius: 50%;
    background: var(--bg);
}

.timeline li.now::before { background: var(--accent); box-shadow: 0 0 0 5px var(--accent-soft); }

.t-item {
    display: block;
    width: 100%;
    padding: 18px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
    transition: border-color 0.25s ease, transform 0.25s ease;
}

.t-item:hover { border-color: rgba(17, 214, 214, 0.55); transform: translateX(4px); }

.t-item .year { color: var(--accent); font-size: 0.82rem; font-weight: 700; }

.t-item h3 { margin: 4px 0 4px; font-size: 1.08rem; }

.t-item p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* --- İletişim --- */
.contact-box {
    padding: 56px 40px;
    background: linear-gradient(160deg, rgba(17, 214, 214, 0.14), rgba(17, 214, 214, 0.02) 70%), var(--surface);
    border: 1px solid rgba(17, 214, 214, 0.3);
    border-radius: 24px;
    text-align: center;
}

.contact-box h2 { margin: 0 0 12px; font-size: clamp(1.7rem, 3.4vw, 2.4rem); letter-spacing: -0.6px; line-height: 1.2; }

.contact-box p { margin: 0 auto 28px; max-width: 520px; color: var(--text-2); }

.contact-box .hero-actions { justify-content: center; }

.footer { padding: 32px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.88rem; }

.footer .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; }

.footer-links { display: flex; flex-wrap: wrap; gap: 6px 20px; }

.footer-links a { color: var(--muted); text-decoration: none; transition: color 0.2s ease; }

.footer-links a:hover { color: var(--accent); }

/* --- Detay penceresi (mevcut index.js ile çalışır) --- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    padding: 5vh 16px;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(6px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}

.modal.show { opacity: 1; visibility: visible; transition: opacity 0.3s ease, visibility 0s; }

.modal-content {
    position: relative;
    max-width: 820px;
    max-height: 90vh;
    margin: 0 auto;
    padding: 36px;
    overflow-y: auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    transform: translateY(24px);
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.modal.show .modal-content { transform: none; }

.close-button {
    position: absolute;
    top: 14px;
    right: 18px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    background: none;
    border: 0;
    border-radius: 50%;
    color: var(--muted);
    font: inherit;
    font-size: 30px;
    line-height: 1;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.close-button:hover { background: rgba(255, 255, 255, 0.08); color: var(--text); }

#modal-body h2 { margin: 0 48px 20px 0; font-size: 1.6rem; line-height: 1.25; letter-spacing: -0.4px; }

#modal-body h3 { margin: 30px 0 12px; padding-left: 12px; border-left: 3px solid var(--accent); font-size: 1.08rem; line-height: 1.3; }

#modal-body p { margin: 0 0 16px; color: var(--text-2); line-height: 1.7; }

#modal-body strong { color: var(--text); }

#modal-body ul { margin: 0 0 20px; padding-left: 22px; color: var(--text-2); line-height: 1.7; }

#modal-body li { margin-bottom: 8px; }

#modal-body li::marker { color: var(--accent); }

#modal-body .tech-list { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 0; padding: 0; list-style: none; }

#modal-body .tech-list li { margin: 0; padding: 5px 12px; background: var(--accent-soft); border-radius: 999px; color: var(--accent); font-size: 0.85rem; line-height: 1.4; }

#modal-body > img,
.image-row img {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 420px;
    border: 1px solid var(--border);
    border-radius: 10px;
}

#modal-body > img { margin: 4px auto 24px; }

.image-row { display: flex; justify-content: center; align-items: flex-start; gap: 20px; margin: 4px 0 24px; }

.image-row img { flex: 0 1 auto; min-width: 0; }

.modal-content:focus { outline: none; }

.modal-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--border); }

#modal-body .modal-links img { width: 18px; height: 18px; max-height: none; margin: 0; border: 0; border-radius: 0; }

/* --- Görünme animasyonu --- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }

.reveal.in { opacity: 1; transform: none; }

/* --- Duyarlı düzen --- */
@media (max-width: 900px) {
    section { padding: 72px 0; }

    .hero-main { grid-template-columns: 1fr; gap: 40px; }

    .code-card { max-width: 440px; }

    .feature { grid-template-columns: 1fr; }

    .feature:nth-child(even) .feature-media { order: 0; }

    .feature-media { min-height: 260px; }

    .feature-body { padding: 28px; }

    .about-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 700px) {
    .wrap { padding: 0 18px; }

    section { padding: 56px 0; }

    .hero { padding: 48px 0 56px; }

    /* backdrop-filter, içindeki sabit konumlu menüyü navbar'a hapseder; mobilde kapalı */
    .navbar { background: var(--bg); backdrop-filter: none; }

    .hamburger { display: block; position: relative; z-index: 1100; }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        z-index: 1050;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        width: min(78vw, 300px);
        height: 100vh;
        padding: 92px 20px 24px;
        background: var(--surface);
        border-left: 1px solid var(--border);
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }

    .nav-links.active { transform: none; }

    .nav-links a { padding: 12px 14px; font-size: 1.05rem; }

    .nav-links .nav-btn { margin: 12px 0 0; text-align: center; }

    .nav-overlay { position: fixed; inset: 0; z-index: 900; background: rgba(0, 0, 0, 0.6); }

    .nav-overlay.active { display: block; }

    .terminal { font-size: 0.8rem; }

    .term-screen { height: 240px; padding: 16px; }

    .avatar { width: 72px; height: 72px; }

    .about-intro { gap: 14px; padding: 14px; }

    .term-screen .key { min-width: 74px; }

    .stats { grid-template-columns: 1fr; gap: 10px; margin-top: 44px; }

    .stats li { display: flex; align-items: baseline; gap: 12px; padding: 14px 18px; }

    .stats strong { font-size: 1.3rem; }

    .feature-media { min-height: 220px; padding: 26px 16px 0; gap: 10px; }

    .feature-media img { width: 110px; }

    .feature-media.web { padding: 18px; }

    .feature-body { padding: 22px; }

    .feature-body h3 { font-size: 1.35rem; }

    .sub-head { margin-top: 52px; }

    .project-grid { grid-template-columns: 1fr; }

    .contact-box { padding: 40px 22px; }

    .modal { padding: 3vh 10px; }

    .modal-content { padding: 22px; max-height: 94vh; }

    #modal-body h2 { font-size: 1.3rem; margin-right: 40px; }

    .image-row { gap: 10px; }

    .image-row.wide { flex-direction: column; align-items: center; }

    #modal-body > img, .image-row img { max-height: 340px; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }

    .reveal { opacity: 1; transform: none; }
}