/* ============================================
 MUSTAFA ER - PORTFOLIO WEBSITE GitHub Dark Theme Styles============================================*/

/* CSS Variables (Değişkenler): Tema renkleri */
:root {
    /* Ana Renkler - GitHub Dark */
    --bg-primary: #0d1117;
    /* Ana arka plan */
    --bg-secondary: #161b22;
    /* Kart arka planları */
    --bg-tertiary: #21262d;
    /* Hover durumları */

    /* Metin Renkleri */
    --text-primary: #c9d1d9;
    /* Ana metin */
    --text-secondary: #8b949e;
    /* İkincil metin */
    --text-heading: #f0f6fc;
    /* Başlıklar */

    /* Vurgu Renkleri */
    --accent-blue: #58a6ff;
    /* Ana mavi */
    --accent-green: #238636;
    /* Başarı yeşili */
    --accent-purple: #8957e5;
    /* Mor vurgu */
    --accent-orange: #f0883e;
    /* Turuncu */

    /* Border ve Diğer */
    --border-color: #30363d;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Font */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-code: 'Fira Code', monospace;
}

/* Reset ve Temel Ayarlar */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    /* Yumuşak scroll */
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Seçili metin rengi */
::selection {
    background: var(--accent-blue);
    color: var(--bg-primary);
}

/* Container: Ortalama ve genişlik sınırlama */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============================================
   NAVBAR STYLLERİ
   Scroll'da gizlenen navbar
   ============================================ */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(10px);
    /* Cam efekti */
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Scroll'da gizleme class'ı (JS ile eklenir) */
#navbar.hidden {
    transform: translateY(-100%);
    opacity: 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo Stili */
.logo {
    font-family: var(--font-code);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-heading);
    text-decoration: none;
    transition: var(--transition);
}

.logo-bracket {
    color: var(--accent-blue);
}

.logo:hover {
    color: var(--accent-blue);
}

/* Nav Menü */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

/* Link hover efekti: Alt çizgi */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-blue);
}

/* Tüm Projeler linki vurgulu */
.nav-link.highlight {
    color: var(--accent-green);
}

.nav-link.highlight:hover {
    color: #2ea043;
}

/* Hamburger Menü (Mobil) */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 3px;
}

/* Hamburger animasyonu */
.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ============================================
   HERO SECTION
   Ana giriş bölümü
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 6rem 2rem 2rem;
    position: relative;
    overflow: hidden;
}

/* Arka plan gradient efekti */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(88, 166, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

/* Hero Metin */
.hero-greeting {
    color: var(--accent-blue);
    font-family: var(--font-code);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 0.5rem;
    line-height: 1.2;
    min-height: 5rem;
}

/* Typing animasyonu için cursor */
.cursor {
    color: var(--accent-blue);
    animation: blink 1s infinite;
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

.hero-subtitle {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-weight: 600;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.4s forwards;
}

/* Animasyon Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Butonlar */
.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.6s forwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--accent-blue);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: #79b8ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 166, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}

.btn-secondary:hover {
    background: rgba(88, 166, 255, 0.1);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Sosyal Linkler */
.social-links {
    display: flex;
    gap: 1rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.8s forwards;
}

.social-link {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    transform: translateY(-3px);
}

/* ============================================
   HERO CODE WINDOW
   Dekoratif kod bloğu
   ============================================ */
.hero-code {
    opacity: 0;
    animation: fadeInUp 0.8s ease 1s forwards;
}

.code-window {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.code-header {
    background: var(--bg-tertiary);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

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

.dot.red {
    background: #ff5f56;
}

.dot.yellow {
    background: #ffbd2e;
}

.dot.green {
    background: #27c93f;
}

.code-filename {
    margin-left: auto;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-family: var(--font-code);
}

.code-content {
    padding: 1.5rem;
    font-family: var(--font-code);
    font-size: 0.9rem;
    line-height: 1.8;
    overflow-x: auto;
}

/* Kod renklendirme */
.code-keyword {
    color: #ff7b72;
}

.code-variable {
    color: #79c0ff;
}

.code-property {
    color: #9cdcfe;
}

.code-string {
    color: #a5d6ff;
}

.code-function {
    color: #dcdcaa;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease 1.2s forwards;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 12px;
    margin: 0 auto 0.5rem;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-secondary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 1.5s infinite;
}

@keyframes scrollWheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(10px);
    }
}

/* ============================================
   SECTION STYLLERİ (Genel)
   ============================================ */
section {
    padding: 6rem 0;
}

.section-title {
    font-size: 2rem;
    color: var(--text-heading);
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.title-number {
    color: var(--accent-blue);
    font-family: var(--font-code);
    font-size: 1.5rem;
}

.section-subtitle {
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.inline-link {
    color: var(--accent-blue);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-blue);
    transition: var(--transition);
}

.inline-link:hover {
    color: #79b8ff;
}

/* ============================================
   HAKKIMDA SECTION
   ============================================ */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.highlight-text {
    color: var(--accent-blue);
    font-weight: 600;
}

/* İstatistikler */
.stats {
    display: flex;
    gap: 3rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    font-family: var(--font-code);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Profil Görseli */
.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
}

.image-border {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--accent-blue);
    border-radius: 12px;
    transition: var(--transition);
}

.image-wrapper:hover .image-border {
    top: 10px;
    left: 10px;
}

.profile-placeholder {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-tertiary);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.profile-placeholder i {
    font-size: 5rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.profile-placeholder span {
    font-size: 1.2rem;
    color: var(--text-heading);
    font-weight: 600;
}

/* ============================================
   YETENEKLER SECTION
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* Kart hover: Üstten mavi çizgi */
.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.skill-card:hover::before {
    transform: scaleX(1);
}

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.skill-icon {
    width: 50px;
    height: 50px;
    background: rgba(88, 166, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.skill-icon i {
    font-size: 1.5rem;
    color: var(--accent-blue);
}

.skill-card h3 {
    color: var(--text-heading);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

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

.skill-list li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.skill-list li i {
    color: var(--accent-green);
    font-size: 0.8rem;
}

/* ============================================
   PROJELER PREVIEW (Ana Sayfa)
   ============================================ */
.projects-preview {
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.project-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

/* Featured kart daha büyük */
.project-card.featured {
    grid-column: span 2;
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.project-placeholder i {
    font-size: 4rem;
    color: var(--accent-blue);
    opacity: 0.5;
    transition: var(--transition);
}

.project-card:hover .project-placeholder i {
    opacity: 1;
    transform: scale(1.1);
}

/* Farklı proje tipleri için renkler */
.project-placeholder.game {
    background: linear-gradient(135deg, #8957e520, var(--bg-secondary));
}

.project-placeholder.game i {
    color: var(--accent-purple);
}

.project-placeholder.web {
    background: linear-gradient(135deg, #23863620, var(--bg-secondary));
}

.project-placeholder.web i {
    color: var(--accent-green);
}

/* Overlay: Hover'da görünür */
.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 17, 23, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    width: 45px;
    height: 45px;
    border: 1px solid var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-blue);
    text-decoration: none;
    transition: var(--transition);
}

.project-link:hover {
    background: var(--accent-blue);
    color: var(--bg-primary);
    transform: scale(1.1);
}

.project-content {
    padding: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: rgba(88, 166, 255, 0.1);
    color: var(--accent-blue);
    border-radius: 20px;
    font-family: var(--font-code);
}

.project-title {
    color: var(--text-heading);
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.center-button {
    text-align: center;
}

/* ============================================
   DENEYİM TIMELINE
   ============================================ */
.experience {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

/* Timeline çizgisi */
.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-blue), var(--accent-purple));
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
    padding-bottom: 3rem;
}

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

/* Timeline noktası */
.timeline-marker {
    position: absolute;
    left: -6px;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--bg-primary);
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    transition: var(--transition);
}

.timeline-item:hover .timeline-marker {
    background: var(--accent-blue);
    transform: scale(1.2);
}

.timeline-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--accent-blue);
    transform: translateX(5px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-header h3 {
    color: var(--text-heading);
    font-size: 1.1rem;
}

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

.timeline-list {
    list-style: none;
}

.timeline-list li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
}

.timeline-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
}

/* ============================================
   İLETİŞİM SECTION
   ============================================ */
.contact {
    text-align: center;
}

.contact-text {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto 2rem;
}

.contact-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.contact-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-3px);
    color: var(--accent-blue);
}

.contact-card i {
    font-size: 1.5rem;
    color: var(--accent-blue);
}

.contact-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--bg-secondary);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-text {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-tech {
    color: var(--text-secondary);
    font-family: var(--font-code);
    font-size: 0.85rem;
}

.back-link {
    color: var(--accent-blue);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.back-link:hover {
    gap: 1rem;
}

/* ============================================
   WHATSAPP BUTONU (Sabit)
   ============================================ */
.whatsapp-button {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.75rem;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    z-index: 999;
}

.whatsapp-button:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

/* WhatsApp tooltip */
.whatsapp-tooltip {
    position: absolute;
    right: 70px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.whatsapp-button:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    right: 75px;
}

/* ============================================
   YUKARI ÇIK BUTONU
   ============================================ */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 6rem;
    width: 50px;
    height: 50px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 998;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: var(--bg-primary);
    transform: translateY(-3px);
}

/* ============================================
   PROJE GALERİSİ SAYFASI STYLLERİ
   ============================================ */

/* Galeri Hero */
.gallery-hero {
    padding: 8rem 0 3rem;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    text-align: center;
}

.gallery-title {
    font-size: 3rem;
    color: var(--text-heading);
    margin-bottom: 1rem;
}

.gallery-description {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    font-size: 1.1rem;
}

/* Filtre Butonları */
.filter-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    color: var(--text-secondary);
    font-family: var(--font-main);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: var(--bg-primary);
}

/* Galeri Grid */
.gallery-section {
    padding: 3rem 0 6rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

/* Galeri Kartı (Daha detaylı) */
.gallery-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.gallery-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-blue);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.gallery-card.hidden {
    display: none;
}

.card-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.card-placeholder i {
    font-size: 4rem;
    opacity: 0.6;
    transition: var(--transition);
}

.gallery-card:hover .card-placeholder i {
    opacity: 1;
    transform: scale(1.1);
}

/* Farklı kategori renkleri */
.card-placeholder.courier {
    background: linear-gradient(135deg, #58a6ff30, var(--bg-secondary));
}

.card-placeholder.courier i {
    color: var(--accent-blue);
}

.card-placeholder.game-3d {
    background: linear-gradient(135deg, #8957e530, var(--bg-secondary));
}

.card-placeholder.game-3d i {
    color: var(--accent-purple);
}

.card-placeholder.unreal {
    background: linear-gradient(135deg, #f0883e30, var(--bg-secondary));
}

.card-placeholder.unreal i {
    color: var(--accent-orange);
}

.card-placeholder.automation {
    background: linear-gradient(135deg, #23863630, var(--bg-secondary));
}

.card-placeholder.automation i {
    color: var(--accent-green);
}

.card-placeholder.mobile {
    background: linear-gradient(135deg, #58a6ff20, #8957e520);
}

.card-placeholder.mobile i {
    color: #a371f7;
}

.card-placeholder.portfolio {
    background: linear-gradient(135deg, #f0883e20, #58a6ff20);
}

.card-placeholder.portfolio i {
    color: #f778ba;
}

.card-placeholder.ecommerce {
    background: linear-gradient(135deg, #3fb95030, var(--bg-secondary));
}

.card-placeholder.ecommerce i {
    color: #3fb950;
}

.card-placeholder.api {
    background: linear-gradient(135deg, #79c0ff30, var(--bg-secondary));
}

.card-placeholder.api i {
    color: #79c0ff;
}

/* Kart Overlay */
.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 17, 23, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-card:hover .card-overlay {
    opacity: 1;
}

.card-actions {
    display: flex;
    gap: 1rem;
}

.action-btn {
    width: 50px;
    height: 50px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.1rem;
}

.action-btn:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: var(--bg-primary);
    transform: translateY(-3px);
}

/* Kategori Badge */
.category-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.4rem 1rem;
    background: var(--accent-blue);
    color: var(--bg-primary);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-badge.game {
    background: var(--accent-purple);
}

.category-badge.mobile {
    background: #a371f7;
}

/* Kart İçeriği */
.card-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.card-title {
    color: var(--text-heading);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1rem;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.card-date {
    color: var(--text-secondary);
    font-family: var(--font-code);
    font-size: 0.85rem;
}

.read-more {
    background: none;
    border: none;
    color: var(--accent-blue);
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.read-more:hover {
    gap: 0.75rem;
    color: #79b8ff;
}

/* ============================================
   MODAL (Proje Detayları)
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 2000;
    padding: 2rem;
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: #da3633;
    border-color: #da3633;
    color: white;
}

.modal-body {
    padding: 2rem;
}

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.75rem;
    color: var(--text-heading);
    margin-bottom: 0.5rem;
}

.modal-meta {
    display: flex;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal-image {
    width: 100%;
    height: 300px;
    background: var(--bg-tertiary);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.modal-image i {
    font-size: 5rem;
    opacity: 0.3;
}

.modal-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.modal-features {
    margin-bottom: 1.5rem;
}

.modal-features h4 {
    color: var(--text-heading);
    margin-bottom: 0.75rem;
}

.modal-features ul {
    list-style: none;
}

.modal-features li {
    color: var(--text-secondary);
    padding: 0.4rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.modal-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-green);
    font-weight: bold;
}

.modal-links {
    display: flex;
    gap: 1rem;
}

/* ============================================
   RESPONSIVE TASARIM (Mobil Uyumluluk)
   ============================================ */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-code {
        display: none;
        /* Mobilde kod bloğu gizli */
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }

    .hero-description {
        margin: 0 auto 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: -1;
    }

    .image-wrapper {
        width: 250px;
        height: 250px;
    }

    .project-card.featured {
        grid-column: span 1;
    }

    .stats {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-secondary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 2rem 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding: 5rem 1rem 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    section {
        padding: 4rem 0;
    }

    .container {
        padding: 0 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .projects-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        padding-left: 3rem;
    }

    .timeline-marker {
        left: 9px;
    }

    .filter-buttons {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }

    .whatsapp-button {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
        bottom: 1rem;
        right: 1rem;
    }

    .scroll-top {
        right: 4.5rem;
        bottom: 1rem;
        width: 45px;
        height: 45px;
    }

    .gallery-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto 2rem;
    }

    .stats {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Loading animasyonu */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}