/* --- Canlı Elektrik Mavisi & Koyu Tema --- */
:root {
    --bg-dark: #080c14;
    --bg-card: rgba(13, 22, 39, 0.75);
    --border-glow: #00d2ff;
    --border-card: rgba(0, 210, 255, 0.2);
    --text-main: #f0f6fc;
    --text-muted: #8b949e;
    --accent-blue: #00f0ff;
    --accent-glow: rgba(0, 240, 255, 0.4);
    --font-sans: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 50% 30%, rgba(0, 210, 255, 0.08) 0%, transparent 60%),
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 100% 100%, 40px 40px, 40px 40px;
    overflow-x: hidden;
}

/* Tipografi */
.text-justify {
    text-align: justify;
    text-justify: inter-word;
}

/* --- Navigasyon --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 8%;
    background: rgba(8, 12, 20, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 210, 255, 0.15);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 48px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 10px rgba(0, 210, 255, 0.5));
    transition: transform 0.3s ease, filter 0.3s ease;
}

.logo img:hover {
    transform: scale(1.08);
    filter: drop-shadow(0 0 16px rgba(0, 240, 255, 0.8));
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-blue);
    text-shadow: 0 0 10px var(--accent-glow);
}

.lang-btn {
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--border-glow);
    color: var(--accent-blue);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 8px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: var(--accent-blue);
    color: #080c14;
    box-shadow: 0 0 15px var(--accent-glow);
}

/* --- Hero Bölümü --- */
.hero {
    min-height: calc(100vh - 80px);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
}

.hero-content {
    max-width: 850px;
}

.glow-text {
    font-size: 4rem;
    font-weight: 900;
    letter-spacing: 2px;
    color: #ffffff;
    text-shadow: 
        0 0 10px rgba(0, 240, 255, 0.8),
        0 0 25px rgba(0, 240, 255, 0.5),
        0 0 50px rgba(0, 240, 255, 0.2);
    margin-bottom: 0.8rem;
}

.subtitle {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--accent-blue);
    letter-spacing: 3px;
    margin-bottom: 0.8rem;
}

.tagline {
    color: var(--text-muted);
    font-size: 1.1rem;
    letter-spacing: 1px;
    margin-bottom: 3rem;
}

/* Butonlar */
.hero-buttons {
    display: inline-flex;
    gap: 1.2rem;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-glow);
    border-radius: 16px;
    box-shadow: 0 0 25px rgba(0, 210, 255, 0.25), inset 0 0 15px rgba(0, 210, 255, 0.1);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.9rem 1.8rem;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: rgba(0, 240, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(0, 240, 255, 0.4);
}

.btn-primary:hover {
    background: var(--accent-blue);
    color: #080c14;
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-accent {
    background: #00d2ff;
    color: #080c14;
    font-weight: 700;
}

.btn-accent:hover {
    background: #5ce1e6;
    box-shadow: 0 0 20px rgba(0, 210, 255, 0.6);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: rgba(0, 240, 255, 0.05);
}

/* --- Bölüm Genel --- */
.section {
    padding: 5rem 10%;
}

.section-title {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-title h2 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: #fff;
}

.underline {
    width: 60px;
    height: 4px;
    background: var(--accent-blue);
    margin: 10px auto 0;
    border-radius: 2px;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Kart Tasarımları */
.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 16px;
    padding: 2.5rem;
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-muted);
    backdrop-filter: blur(10px);
}

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

.skill-category {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.skill-category:hover {
    border-color: var(--accent-blue);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 210, 255, 0.15);
}

.skill-icon {
    font-size: 2rem;
    color: var(--accent-blue);
    margin-bottom: 1.2rem;
}

.skill-category h3 {
    margin-bottom: 1.2rem;
    font-size: 1.2rem;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    color: var(--text-muted);
    margin-bottom: 0.7rem;
    font-size: 0.95rem;
}

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

.project-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
}

.project-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 210, 255, 0.15);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
}

.project-icon {
    font-size: 1.8rem;
    color: var(--accent-blue);
}

.project-tag {
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 20px;
    background: rgba(0, 240, 255, 0.1);
    color: var(--accent-blue);
    border: 1px solid rgba(0, 240, 255, 0.3);
}

.project-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

.project-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

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

.project-tech span {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    padding: 4px 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    color: var(--text-muted);
}

/* Zaman Çizelgesi (Timeline) */
.timeline {
    max-width: 750px;
    margin: 0 auto;
    border-left: 2px solid rgba(0, 210, 255, 0.3);
    padding-left: 2rem;
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.timeline-dot {
    position: absolute;
    left: -2.6rem;
    top: 5px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-blue);
    box-shadow: 0 0 10px var(--accent-blue);
}

.timeline-date {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-blue);
    font-weight: 600;
}

.timeline-content h3 {
    font-size: 1.2rem;
    margin-top: 4px;
}

.timeline-content h4 {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 0.6rem;
}

.timeline-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* İletişim */
.contact-container {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-lead {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    white-space: nowrap;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.contact-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.8rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid rgba(0, 210, 255, 0.3);
    border-radius: 30px;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.contact-badge:hover {
    background: var(--accent-blue);
    color: #080c14;
    box-shadow: 0 0 15px var(--accent-glow);
}

.footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Mobil Uyumluluk */
@media (max-width: 768px) {
    .contact-lead {
        white-space: normal;
    }
    .glow-text {
        font-size: 2.5rem;
    }
    .subtitle {
        font-size: 1rem;
    }
    .nav-links {
        display: none;
    }
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
}