/* Modern Dark Mode Renk Paleti */
:root {
    --bg-dark: #0b101c;
    --bg-card: #131824;
    --bg-input: #10141f;
    --text-white: #e4e7ec;
    --text-gray: #8b93a7;
    --accent-purple: #a855f7;
    --accent-cyan: #00d9ff;
    --gradient-primary: linear-gradient(135deg, #00d9ff 0%, #a855f7 100%);
    --border-color: #1e2436;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Plus Jakarta Sans', sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    overflow-x: hidden;
    padding-bottom: 2rem;
}

/* Üst Menü (Navbar) */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

nav a {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--text-white);
}

.lang-switch {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s;
}

.lang-switch:hover {
    border-color: var(--accent-purple);
}

/* Konteyner Düzeni */
section {
    max-width: 1140px;
    margin: 0 auto;
    padding: 6rem 2rem 2rem 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, #fff 0%, var(--text-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Giriş Bölümü */
.hero-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    min-height: 90vh;
    padding-top: 8rem;
}

.hero-left {
    max-width: 700px;
    text-align: left;
}


.welcome-tag {
    background-color: var(--bg-input);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-gray);
    display: inline-block;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}
/* Giriş alanındaki kutucuğa mor ışıltı efekti */
.welcome-tag {
    box-shadow: 0 0 12px rgba(168, 85, 247, 0.15);
    transition: box-shadow 0.3s, border-color 0.3s;
}

.welcome-tag:hover {
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.4);
    border-color: var(--accent-purple);
}

.welcome-tag span { color: var(--accent-cyan); margin-right: 5px; }

.hero-left h1 {
    font-size: 3.8rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    font-weight: 800;
    color: #c084fc; /* Saf neon açık mor tonu */
    
    /* Çok katmanlı güçlü neon ışık efekti */
    text-shadow: 
        0 0 7px rgba(168, 85, 247, 0.6),
        0 0 15px rgba(168, 85, 247, 0.4),
        0 0 21px rgba(168, 85, 247, 0.2),
        0 0 42px rgba(168, 85, 247, 0.1);
        
    /* İstersen fareyle üzerine gelindiğinde parlama düzeyi artsın: */
    transition: text-shadow 0.3s ease, color 0.3s ease;
}

/* Üzerine gelindiğinde ışıltıyı katla */
.hero-left h1:hover {
    color: #dfbcff;
    text-shadow: 
        0 0 10px rgba(168, 85, 247, 0.9),
        0 0 20px rgba(168, 85, 247, 0.7),
        0 0 30px rgba(168, 85, 247, 0.5),
        0 0 60px rgba(168, 85, 247, 0.3);
}

.hero-left h2 {
    font-size: 1.4rem;
    color: var(--accent-cyan);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.hero-left p {
    color: var(--text-gray);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

/* Kod Pencereli Profil Kartı */
.code-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.6), 0 0 60px rgba(0, 217, 255, 0.08), 0 0 100px rgba(168, 85, 247, 0.06);
}

.code-card-header {
    display: flex;
    gap: 8px;
    margin-bottom: 1.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red { background: #ff5f56; box-shadow: 0 0 8px rgba(255, 95, 86, 0.6); }
.dot-yellow { background: #ffbd2e; box-shadow: 0 0 8px rgba(255, 189, 46, 0.6); }
.dot-green { background: #27c93f; box-shadow: 0 0 8px rgba(39, 201, 63, 0.6); }

.code-header i {
    color: var(--accent-purple);
    font-size: 1.2rem;
}

.code-body {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    color: #e2e8f0;
}

.keyword { color: var(--accent-purple); text-shadow: 0 0 10px rgba(168, 85, 247, 0.4); }
.string { color: #fbbf24; text-shadow: 0 0 10px rgba(251, 191, 36, 0.3); }
.key { color: var(--accent-cyan); }
.profile-badges {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.badge-row {
    background-color: var(--bg-input);
    padding: 0.8rem 1.2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    color: var(--text-gray);
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.badge-row i { color: var(--accent-purple); }

.badge-link {
    text-decoration: none;
    color: var(--text-gray);
    transition: border-color 0.3s, color 0.3s;
    cursor: pointer;
}

.badge-link:hover {
    border-color: var(--accent-cyan);
    color: var(--text-white);
}

.badge-link i {
    color: var(--accent-purple);
}

/* Becerilerim */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.skill-category {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 12px;
}

.skill-category h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.skill-tag {
    background-color: rgba(39, 39, 42, 0.6);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s;
}

.skill-tag:hover {
    border-color: var(--accent-purple);
    background-color: rgba(168, 85, 247, 0.1);
}

/* Projelerim */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s, border-color 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-purple);
}

.project-info {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-info h3 { font-size: 1.3rem; margin-bottom: 0.8rem; }
.project-info p { color: var(--text-gray); font-size: 0.95rem; line-height: 1.6; margin-bottom: 1.5rem; flex-grow: 1; }

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-badge {
    background-color: rgba(0, 217, 255, 0.1);
    color: var(--accent-cyan);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.project-link {
    color: var(--text-white);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s;
}

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

.hidden-project { display: none; }

.view-all-container {
    text-align: center;
    margin-top: 3rem;
}

/* Eğitim */
.edu-header {
    text-align: left;
    margin-bottom: 3rem;
}

.edu-eyebrow {
    color: var(--accent-cyan);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.edu-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-white);
}

.edu-timeline {
    border-left: 2px solid rgba(0, 217, 255, 0.2);
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
    padding-left: 2rem;
}

.edu-item {
    position: relative;
}

.edu-dot {
    position: absolute;
    left: -2.45rem;
    top: 0.35rem;
    width: 12px;
    height: 12px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.6);
}

.edu-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.4rem;
}

.edu-date {
    display: block;
    color: var(--accent-cyan);
    font-size: 0.85rem;
    margin-bottom: 0.6rem;
}

.edu-content p {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

.valedictorian-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
    color: #000;
    font-size: 0.85rem;
    font-weight: 800;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    margin-top: 0.4rem;
}

/* Sertifikalar */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.5rem;
}

.cert-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1rem;
}

.cert-meta h4 { font-size: 1.1rem; margin-bottom: 0.4rem; color: var(--text-white); }
.cert-meta p { color: var(--text-gray); font-size: 0.85rem; }
.cert-id {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent-cyan);
    background-color: rgba(0, 217, 255, 0.05);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    display: inline-block;
}

/* Faaliyetler */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 900px;
    margin: 0 auto;
}

.activity-card {
    background-color: var(--bg-card);
    border-left: 4px solid var(--accent-purple);
    border-top: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 0 12px 12px 0;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    justify-content: space-between;
}

.activity-img {
    width: 400px;
    height: 140px;
    border-radius: 10px;
    object-fit: cover;
    object-position: center;
    flex-shrink: 0;
    border: 1px solid var(--border-color);
}

.activity-details h4 { font-size: 1.2rem; margin-bottom: 0.3rem; }
.activity-details p { color: var(--text-gray); font-size: 0.9rem; }
.activity-badge {
    background-color: rgba(168, 85, 247, 0.1);
    color: var(--accent-purple);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
}

/* İletişim Formu */
.contact-container {
    display: flex;
    gap: 4rem;
    align-items: flex-start;
}

.contact-info { flex: 1; }
.contact-form { flex: 1.2; background-color: var(--bg-card); border: 1px solid var(--border-color); padding: 2.5rem; border-radius: 16px; }

.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-size: 0.9rem; margin-bottom: 0.5rem; color: var(--text-gray); }
.form-group input, .form-group textarea {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    outline: none;
    transition: border-color 0.3s;
}
.form-group input:focus, .form-group textarea:focus { border-color: var(--accent-purple); }

/* Buton Standartları */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--gradient-primary);
    color: #0a0e1a;
    padding: 0.8rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}
.btn:hover { transform: translateY(-2px); opacity: 0.95; }

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-white);
}
.btn-sm:hover { border-color: var(--accent-purple); background-color: rgba(168, 85, 247, 0.05); }

.cv-download-box {
    text-align: center;
    margin-top: 4rem;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
}

.hero-tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 1.2rem;
}

.hero-tag {
    background-color: rgba(168, 85, 247, 0.15);
    color: var(--accent-purple);
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
}
.hero-tag {
    box-shadow: 0 0 12px rgba(168, 85, 247, 0.15);
    transition: box-shadow 0.3s;
}

.hero-tag:hover {
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.4);
}

/* Mobil Tasarım */
@media (max-width: 768px) {
    header { padding: 1rem 2rem; }
    .hero-container, .contact-container { flex-direction: column; gap: 2rem; }
    .hero-left h1 { font-size: 2.8rem; }
    .activity-card { flex-direction: column; align-items: flex-start; gap: 1rem; }
}
.activity-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent-cyan);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 0.6rem;
}

.activity-link:hover {
    text-decoration: underline;
}

/* FARE TAKİP EDEN IŞIKLI NOKTA */
.cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-purple);
    box-shadow: 0 0 15px rgba(168, 85, 247, 0.7);
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: transform 0.08s ease-out, opacity 0.3s;
}
.cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid var(--accent-purple);
    pointer-events: none;
    z-index: 9998;
    transform: translate(-50%, -50%);
    transition: transform 0.15s ease-out, opacity 0.3s;
    opacity: 0.6;
}

@media (max-width: 768px) {
    .cursor-ring {
        display: none;
    }
}
@media (max-width: 768px) {
    .cursor-glow {
        display: none;
    }
}

/* BECERİLER - ORBIT TASARIM */
.orbit-container {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto 3rem auto;
}

.orbit-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 340px;
    height: 340px;
    border: 1px dashed rgba(0, 217, 255, 0.15);
    border-radius: 50%;
    transform: translate(-50%, -50%);
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 40px rgba(0, 217, 255, 0.5), 0 0 80px rgba(168, 85, 247, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-align: center;
    padding: 1rem;
    z-index: 10;
    animation: centerPulse 3s ease-in-out infinite;
}

@keyframes centerPulse {
    0%, 100% { box-shadow: 0 0 30px rgba(0, 217, 255, 0.4), 0 0 60px rgba(168, 85, 247, 0.2); }
    50% { box-shadow: 0 0 45px rgba(0, 217, 255, 0.7), 0 0 90px rgba(168, 85, 247, 0.4); }
}

.orbit-center i {
    font-size: 1.8rem;
    color: var(--accent-cyan);
}

.orbit-center span {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-white);
}

.orbit-slot {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
}

.orbit-node {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid rgba(0, 217, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-white);
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.35);
    transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease;
}

.orbit-node:hover {
    transform: scale(1.3);
    border-color: var(--accent-purple);
    box-shadow: 0 0 45px rgba(168, 85, 247, 0.8), 0 0 70px rgba(0, 217, 255, 0.4);
}

.orbit-node:hover .orbit-icon {
    animation: spinSelf 9s linear infinite;
}

@keyframes spinSelf {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.orbit-node.empty {
    opacity: 0;
    pointer-events: none;
}

/* 8 nokta - 170px yarıçap */
.pos-1 { transform: translate(0px, -170px); }
.pos-2 { transform: translate(120px, -120px); }
.pos-3 { transform: translate(170px, 0px); }
.pos-4 { transform: translate(120px, 120px); }
.pos-5 { transform: translate(0px, 170px); }
.pos-6 { transform: translate(-120px, 120px); }
.pos-7 { transform: translate(-170px, 0px); }
.pos-8 { transform: translate(-120px, -120px); }

.skill-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.skill-tab {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-gray);
    padding: 0.6rem 1.2rem;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s;
    font-family: var(--font-body, inherit);
}

.skill-tab:hover {
    border-color: var(--accent-cyan);
    color: var(--text-white);
}

.skill-tab.active {
    border-color: var(--accent-purple);
    color: var(--accent-purple);
    box-shadow: 0 0 15px rgba(168, 85, 247, 0.3);
}

@media (max-width: 480px) {
    .orbit-container {
        transform: scale(0.6);
        margin-bottom: -4rem;
    }
}

/* Alt Bilgi Satırı Tasarımı */
footer {
    width: 100%;
    padding: 2rem 0;
    margin-top: 5rem;
    border-top: 1px solid var(--border-color); /* İnce düz çizgi */
    background-color: #070a12; 
}

.footer-content {
    max-width: 1140px;
    margin: 0 auto;
    display: flex;
    justify-content: center; 
    align-items: center;
    padding: 0 2rem;
}

.footer-content p {
    color: var(--text-gray);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}