/* ORTAK CSS (Tüm sayfalarda aynı) */
        :root { --bg-color: #1e293b; --card-bg: #334155; --accent-color: #38bdf8; --secondary-accent: #818cf8; --text-main: #f1f5f9; --text-muted: #94a3b8; --border: rgba(255, 255, 255, 0.1); }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Poppins', sans-serif; background-color: var(--bg-color); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }
        
        /* Navigasyon */
        nav { position: fixed; top: 0; width: 100%; background: rgba(30, 41, 59, 0.95); backdrop-filter: blur(12px); padding: 1rem 5%; display: flex; justify-content: space-between; align-items: center; z-index: 1000; border-bottom: 1px solid var(--border); height: 80px; }
        .logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
        .logo-symbol { width: 40px; height: 40px; background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent)); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: white; font-weight: 800; font-family: 'Fira Code', monospace; font-size: 1.1rem; }
        .logo-text { font-size: 1.3rem; font-weight: 700; display: flex; flex-direction: column; line-height: 1; }
        .logo-subtitle { font-size: 0.7rem; font-weight: 400; color: var(--text-muted); letter-spacing: 2px; text-transform: uppercase; }
        
        .nav-right { display: flex; align-items: center; gap: 2rem; }
        .nav-links { display: flex; gap: 2rem; list-style: none; }
        .nav-links a { color: var(--text-main); text-decoration: none; font-weight: 500; transition: color 0.3s; position: relative; }
        .nav-links a.active { color: var(--accent-color); }
        .nav-links a:hover { color: var(--accent-color); }
        .lang-btn { background: rgba(255, 255, 255, 0.1); border: 1px solid var(--border); color: var(--text-main); padding: 0.5rem 1rem; border-radius: 20px; cursor: pointer; font-weight: 600; display: flex; align-items: center; gap: 8px; transition: all 0.3s; }
        
        /* Mobil Menü */
        .hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; z-index: 1002; }
        .bar { width: 25px; height: 3px; background-color: var(--text-main); border-radius: 2px; transition: 0.3s; }
        .mobile-menu { position: fixed; top: 0; right: -100%; width: 70%; height: 100vh; background: rgba(30, 41, 59, 0.98); z-index: 1001; display: flex; flex-direction: column; justify-content: center; align-items: center; transition: 0.4s; }
        .mobile-menu.active { right: 0; }
        .mobile-menu ul { list-style: none; text-align: center; gap: 2rem; display: flex; flex-direction: column; }
        .mobile-menu a { color: var(--text-main); text-decoration: none; font-size: 1.2rem; font-weight: 600; }
        .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .hamburger.active .bar:nth-child(2) { opacity: 0; }
        .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

        /* Loader & Glow */
        #loader { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: var(--bg-color); z-index: 9999; display: flex; justify-content: center; align-items: center; transition: opacity 0.8s; }
        .loader-content { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
        .loader-content .logo-symbol { width: 80px; height: 80px; font-size: 2rem; border-radius: 20px; animation: pulseLogo 2s infinite ease-in-out; }
        @keyframes pulseLogo { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.1); } }
        .bg-glow { position: fixed; width: 500px; height: 500px; filter: blur(150px); opacity: 0.2; border-radius: 50%; z-index: 0; transition: transform 0.1s linear; pointer-events: none; }
        .glow-1 { top: -10%; left: -10%; background: #9333ea; }
        .glow-2 { bottom: 10%; right: -10%; background: var(--accent-color); }
        .cursor-glow { position: fixed; width: 600px; height: 600px; background: radial-gradient(circle, rgba(56,189,248,0.1) 0%, rgba(0,0,0,0) 70%); border-radius: 50%; pointer-events: none; transform: translate(-50%, -50%); z-index: 0; }

        /* SAYFAYA ÖZEL: Hero */
        .hero { min-height: 100vh; display: flex; align-items: center; padding: 120px 10% 2rem 10%; position: relative; z-index: 1; }
        .hero-container { display: flex; flex-direction: column; align-items: center; text-align: center; width: 100%; gap: 2rem; }
        .status-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; background: rgba(34, 197, 94, 0.1); border: 1px solid rgba(34, 197, 94, 0.3); border-radius: 30px; color: #4ade80; font-size: 0.85rem; font-weight: 600; margin-bottom: 1.5rem; }
        .status-dot { width: 8px; height: 8px; background-color: #4ade80; border-radius: 50%; box-shadow: 0 0 10px #4ade80; animation: pulse 2s infinite; }
        .hero h1 { font-size: 4rem; font-weight: 800; line-height: 1.1; margin-bottom: 1rem; }
        .gradient-text { background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
        .typewriter { color: var(--text-main); font-weight: 600; border-right: 3px solid var(--accent-color); padding-right: 5px; animation: blink 0.7s infinite; }
        .btn { display: inline-block; padding: 1rem 2.5rem; border-radius: 50px; font-weight: 600; transition: 0.3s; text-decoration: none; }
        .btn-outline { background: transparent; border: 2px solid var(--border); color: var(--text-main); }
        .btn-outline:hover { border-color: var(--accent-color); color: var(--accent-color); transform: translateY(-3px); }
        .profile-container { position: relative; width: 250px; height: 250px; animation: floatProfile 6s ease-in-out infinite; }
        .profile-img { width: 230px; height: 230px; border-radius: 50%; object-fit: cover; border: 4px solid rgba(255,255,255,0.1); position: relative; z-index: 2; }
        .profile-glow { position: absolute; width: 100%; height: 100%; background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent)); border-radius: 50%; filter: blur(30px); opacity: 0.5; animation: pulseGlow 4s infinite alternate; }
        
        @keyframes blink { 50% { border-color: transparent; } }
        @keyframes floatProfile { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-20px); } }
        @keyframes pulseGlow { 0% { opacity: 0.3; transform: scale(0.95); } 100% { opacity: 0.6; transform: scale(1.05); } }
        @keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(74,222,128,0.4); } 70% { box-shadow: 0 0 0 10px rgba(74,222,128,0); } 100% { box-shadow: 0 0 0 0 rgba(74,222,128,0); } }

        /* Chatbot CSS */
        .chat-widget { position: fixed; bottom: 20px; right: 20px; z-index: 1000; display: flex; flex-direction: column; align-items: flex-end; font-family: 'Poppins', sans-serif; }
        .chat-toggle { width: 60px; height: 60px; background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent)); border-radius: 50%; display: flex; justify-content: center; align-items: center; color: white; font-size: 1.5rem; cursor: pointer; box-shadow: 0 10px 20px rgba(0,0,0,0.3); transition: transform 0.3s; }
        .chat-toggle:hover { transform: scale(1.1) rotate(10deg); }
        .chat-box { width: 350px; height: 450px; background: rgba(30, 41, 59, 0.95); backdrop-filter: blur(15px); border: 1px solid var(--border); border-radius: 20px; margin-bottom: 15px; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 20px 40px rgba(0,0,0,0.4); transform-origin: bottom right; transform: scale(0); opacity: 0; transition: all 0.4s; }
        .chat-box.active { transform: scale(1); opacity: 1; }
        .chat-header { background: linear-gradient(90deg, #334155, #1e293b); padding: 1rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
        .bot-avatar { width: 35px; height: 35px; background: var(--accent-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; }
        .chat-title h4 { font-size: 1rem; color: #f1f5f9; margin: 0; }
        .chat-title span { font-size: 0.75rem; color: #4ade80; display: flex; align-items: center; gap: 4px; }
        .chat-title span::before { content: ''; width: 6px; height: 6px; background: #4ade80; border-radius: 50%; }
        .chat-body { flex-grow: 1; padding: 1rem; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; }
        .message { max-width: 80%; padding: 10px 15px; border-radius: 12px; font-size: 0.9rem; line-height: 1.4; }
        .bot-msg { background: #334155; color: #f1f5f9; border-bottom-left-radius: 2px; align-self: flex-start; }
        .user-msg { background: var(--accent-color); color: white; border-bottom-right-radius: 2px; align-self: flex-end; }
        .chat-input-area { padding: 1rem; border-top: 1px solid var(--border); display: flex; gap: 10px; }
        .chat-input { flex-grow: 1; background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: 20px; padding: 8px 15px; color: white; outline: none; }
        .send-btn { background: transparent; border: none; color: var(--accent-color); cursor: pointer; font-size: 1.2rem; }

        @media (max-width: 992px) { .hero h1 { font-size: 3rem; } }
        @media (max-width: 768px) { .nav-right { display: none; } .hamburger { display: flex; } nav { padding: 0.5rem 5%; } .hero { padding-top: 100px; } .hero h1 { font-size: 2.5rem; } .chat-box { width: 90%; right: 5%; bottom: 90px; height: 50vh; } }
        /* ORTAK CSS */
        :root { --bg-color: #1e293b; --card-bg: #334155; --accent-color: #38bdf8; --secondary-accent: #818cf8; --text-main: #f1f5f9; --text-muted: #94a3b8; --border: rgba(255, 255, 255, 0.1); }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Poppins', sans-serif; background-color: var(--bg-color); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }
        nav { position: fixed; top: 0; width: 100%; background: rgba(30, 41, 59, 0.95); backdrop-filter: blur(12px); padding: 1rem 5%; display: flex; justify-content: space-between; align-items: center; z-index: 1000; border-bottom: 1px solid var(--border); height: 80px; }
        .logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
        .logo-symbol { width: 40px; height: 40px; background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent)); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: white; font-weight: 800; font-family: 'Fira Code', monospace; font-size: 1.1rem; }
        .logo-text { font-size: 1.3rem; font-weight: 700; display: flex; flex-direction: column; line-height: 1; }
        .logo-subtitle { font-size: 0.7rem; font-weight: 400; color: var(--text-muted); letter-spacing: 2px; text-transform: uppercase; }
        .nav-right { display: flex; align-items: center; gap: 2rem; }
        .nav-links { display: flex; gap: 2rem; list-style: none; }
        .nav-links a { color: var(--text-main); text-decoration: none; font-weight: 500; transition: color 0.3s; position: relative; }
        .nav-links a.active { color: var(--accent-color); }
        .nav-links a:hover { color: var(--accent-color); }
        .lang-btn { background: rgba(255, 255, 255, 0.1); border: 1px solid var(--border); color: var(--text-main); padding: 0.5rem 1rem; border-radius: 20px; cursor: pointer; font-weight: 600; display: flex; align-items: center; gap: 8px; transition: all 0.3s; }
        .hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; z-index: 1002; }
        .bar { width: 25px; height: 3px; background-color: var(--text-main); border-radius: 2px; transition: 0.3s; }
        .mobile-menu { position: fixed; top: 0; right: -100%; width: 70%; height: 100vh; background: rgba(30, 41, 59, 0.98); z-index: 1001; display: flex; flex-direction: column; justify-content: center; align-items: center; transition: 0.4s; }
        .mobile-menu.active { right: 0; }
        .mobile-menu ul { list-style: none; text-align: center; gap: 2rem; display: flex; flex-direction: column; }
        .mobile-menu a { color: var(--text-main); text-decoration: none; font-size: 1.2rem; font-weight: 600; }
        .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .hamburger.active .bar:nth-child(2) { opacity: 0; }
        .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
        .bg-glow { position: fixed; width: 500px; height: 500px; filter: blur(150px); opacity: 0.2; border-radius: 50%; z-index: 0; transition: transform 0.1s linear; pointer-events: none; }
        .glow-1 { top: -10%; left: -10%; background: #9333ea; }
        .glow-2 { bottom: 10%; right: -10%; background: var(--accent-color); }
        .cursor-glow { position: fixed; width: 600px; height: 600px; background: radial-gradient(circle, rgba(56,189,248,0.1) 0%, rgba(0,0,0,0) 70%); border-radius: 50%; pointer-events: none; transform: translate(-50%, -50%); z-index: 0; }
        #loader { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: var(--bg-color); z-index: 9999; display: flex; justify-content: center; align-items: center; transition: opacity 0.8s; }
        .loader-content { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }
        .loader-content .logo-symbol { width: 80px; height: 80px; font-size: 2rem; border-radius: 20px; animation: pulseLogo 2s infinite ease-in-out; }
        @keyframes pulseLogo { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.1); } }

        /* SAYFAYA ÖZEL */
        section { padding: 150px 10% 4rem 10%; position: relative; z-index: 1; }
        .section-title { text-align: center; font-size: 2.5rem; margin-bottom: 4rem; position: relative; }
        .section-title::after { content: ''; position: absolute; bottom: -15px; left: 50%; transform: translateX(-50%); width: 80px; height: 4px; background: var(--accent-color); border-radius: 2px; }
        .about-container { max-width: 800px; margin: 0 auto; }
        .about-text { text-align: center; color: var(--text-muted); margin-bottom: 3rem; font-size: 1.1rem; line-height: 1.8; }
        .timeline { position: relative; padding-left: 2rem; border-left: 2px solid rgba(255, 255, 255, 0.1); }
        .timeline-item { position: relative; margin-bottom: 2.5rem; }
        .timeline-dot { position: absolute; left: -2.6rem; top: 0; width: 20px; height: 20px; border-radius: 50%; background: var(--bg-color); border: 2px solid var(--accent-color); box-shadow: 0 0 10px rgba(56, 189, 248, 0.3); }
        .timeline-content { background: var(--card-bg); padding: 1.5rem; border-radius: 12px; border: 1px solid var(--border); transition: transform 0.3s; }
        .timeline-content:hover { transform: translateX(10px); border-color: var(--accent-color); }
        .timeline-date { font-size: 0.85rem; color: var(--accent-color); margin-bottom: 0.5rem; font-weight: 600; text-transform: uppercase; }
        .timeline-content h3 { font-size: 1.2rem; margin-bottom: 0.3rem; color: var(--text-main); }
        .timeline-content p { color: var(--text-muted); font-size: 0.95rem; }

        /* Chatbot CSS */
        .chat-widget { position: fixed; bottom: 20px; right: 20px; z-index: 1000; display: flex; flex-direction: column; align-items: flex-end; font-family: 'Poppins', sans-serif; }
        .chat-toggle { width: 60px; height: 60px; background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent)); border-radius: 50%; display: flex; justify-content: center; align-items: center; color: white; font-size: 1.5rem; cursor: pointer; box-shadow: 0 10px 20px rgba(0,0,0,0.3); transition: transform 0.3s; }
        .chat-toggle:hover { transform: scale(1.1) rotate(10deg); }
        .chat-box { width: 350px; height: 450px; background: rgba(30, 41, 59, 0.95); backdrop-filter: blur(15px); border: 1px solid var(--border); border-radius: 20px; margin-bottom: 15px; display: flex; flex-direction: column; overflow: hidden; box-shadow: 0 20px 40px rgba(0,0,0,0.4); transform-origin: bottom right; transform: scale(0); opacity: 0; transition: all 0.4s; }
        .chat-box.active { transform: scale(1); opacity: 1; }
        .chat-header { background: linear-gradient(90deg, #334155, #1e293b); padding: 1rem; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
        .bot-avatar { width: 35px; height: 35px; background: var(--accent-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: white; }
        .chat-title h4 { font-size: 1rem; color: #f1f5f9; margin: 0; }
        .chat-title span { font-size: 0.75rem; color: #4ade80; display: flex; align-items: center; gap: 4px; }
        .chat-title span::before { content: ''; width: 6px; height: 6px; background: #4ade80; border-radius: 50%; }
        .chat-body { flex-grow: 1; padding: 1rem; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; }
        .message { max-width: 80%; padding: 10px 15px; border-radius: 12px; font-size: 0.9rem; line-height: 1.4; }
        .bot-msg { background: #334155; color: #f1f5f9; border-bottom-left-radius: 2px; align-self: flex-start; }
        .user-msg { background: var(--accent-color); color: white; border-bottom-right-radius: 2px; align-self: flex-end; }
        .chat-input-area { padding: 1rem; border-top: 1px solid var(--border); display: flex; gap: 10px; }
        .chat-input { flex-grow: 1; background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: 20px; padding: 8px 15px; color: white; outline: none; }
        .send-btn { background: transparent; border: none; color: var(--accent-color); cursor: pointer; font-size: 1.2rem; }
        footer { text-align: center; padding: 2rem; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 0.9rem; margin-top: 4rem; }

        @media (max-width: 768px) { .nav-right { display: none; } .hamburger { display: flex; } nav { padding: 0.5rem 5%; } .timeline { padding-left: 1.5rem; } .timeline-dot { left: -2.1rem; } .chat-box { width: 90%; right: 5%; bottom: 90px; height: 50vh; } }
        /* Ortak CSS */
        :root { --bg-color: #1e293b; --card-bg: #334155; --accent-color: #38bdf8; --secondary-accent: #818cf8; --text-main: #f1f5f9; --text-muted: #94a3b8; --c-sharp: #9333ea; --cpp: #3b82f6; --node: #22c55e; --html: #f97316; --border: rgba(255, 255, 255, 0.1); }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Poppins', sans-serif; background-color: var(--bg-color); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }
        nav { position: fixed; top: 0; width: 100%; background: rgba(30, 41, 59, 0.95); backdrop-filter: blur(12px); padding: 1rem 5%; display: flex; justify-content: space-between; align-items: center; z-index: 1000; border-bottom: 1px solid var(--border); height: 80px; }
        .logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
        .logo-symbol { width: 40px; height: 40px; background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent)); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: white; font-weight: 800; font-family: 'Fira Code', monospace; font-size: 1.1rem; }
        .logo-text { font-size: 1.3rem; font-weight: 700; display: flex; flex-direction: column; line-height: 1; }
        .logo-subtitle { font-size: 0.7rem; font-weight: 400; color: var(--text-muted); letter-spacing: 2px; text-transform: uppercase; }
        .nav-right { display: flex; align-items: center; gap: 2rem; }
        .nav-links { display: flex; gap: 2rem; list-style: none; }
        .nav-links a { color: var(--text-main); text-decoration: none; font-weight: 500; transition: color 0.3s; position: relative; }
        .nav-links a.active { color: var(--accent-color); }
        .nav-links a:hover { color: var(--accent-color); }
        .lang-btn { background: rgba(255, 255, 255, 0.1); border: 1px solid var(--border); color: var(--text-main); padding: 0.5rem 1rem; border-radius: 20px; cursor: pointer; font-weight: 600; display: flex; align-items: center; gap: 8px; transition: all 0.3s; }
        .hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; z-index: 1002; }
        .bar { width: 25px; height: 3px; background-color: var(--text-main); border-radius: 2px; transition: 0.3s; }
        .mobile-menu { position: fixed; top: 0; right: -100%; width: 70%; height: 100vh; background: rgba(30, 41, 59, 0.98); z-index: 1001; display: flex; flex-direction: column; justify-content: center; align-items: center; transition: 0.4s; }
        .mobile-menu.active { right: 0; }
        .mobile-menu ul { list-style: none; text-align: center; gap: 2rem; display: flex; flex-direction: column; }
        .mobile-menu a { color: var(--text-main); text-decoration: none; font-size: 1.2rem; font-weight: 600; }
        .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .hamburger.active .bar:nth-child(2) { opacity: 0; }
        .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
        .bg-glow { position: fixed; width: 500px; height: 500px; filter: blur(150px); opacity: 0.2; border-radius: 50%; z-index: 0; transition: transform 0.1s linear; pointer-events: none; }
        .glow-1 { top: -10%; left: -10%; background: #9333ea; }
        .glow-2 { bottom: 10%; right: -10%; background: var(--accent-color); }
        .cursor-glow { position: fixed; width: 600px; height: 600px; background: radial-gradient(circle, rgba(56,189,248,0.1) 0%, rgba(0,0,0,0) 70%); border-radius: 50%; pointer-events: none; transform: translate(-50%, -50%); z-index: 0; }

        /* SAYFAYA ÖZEL: Skills */
        section { padding: 150px 10% 4rem 10%; position: relative; z-index: 1; }
        .section-title { text-align: center; font-size: 2.5rem; margin-bottom: 4rem; position: relative; }
        .section-title::after { content: ''; position: absolute; bottom: -15px; left: 50%; transform: translateX(-50%); width: 80px; height: 4px; background: var(--accent-color); border-radius: 2px; }
        
        .skills-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; }
        .skill-card { background: rgba(51, 65, 85, 0.3); backdrop-filter: blur(5px); padding: 2.5rem 2rem; border-radius: 20px; text-align: center; border: 1px solid var(--border); transition: all 0.4s ease; position: relative; overflow: hidden; }
        .skill-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%); opacity: 0; transition: opacity 0.4s; }
        .skill-card:hover { transform: translateY(-10px); border-color: var(--accent-color); box-shadow: 0 10px 30px rgba(0,0,0,0.2); }
        .skill-card:hover::before { opacity: 1; }
        .skill-icon { font-size: 3.5rem; margin-bottom: 1.5rem; display: inline-block; transition: transform 0.3s; }
        .skill-card:hover .skill-icon { transform: scale(1.1); }
        .skill-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 0.5rem; }
        .progress-bar { width: 100%; height: 8px; background: rgba(0,0,0,0.3); border-radius: 4px; overflow: hidden; margin-top: 1.5rem; }
        .progress { height: 100%; border-radius: 4px; position: relative; }
        .progress::after { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent); transform: translateX(-100%); animation: shimmer 2s infinite; }
        .c-sharp-icon { color: var(--c-sharp); }
        .cpp-icon { color: var(--cpp); }
        .node-icon { color: var(--node); }
        .web-icon { color: var(--html); }

        @media (max-width: 768px) { .nav-right { display: none; } .hamburger { display: flex; } nav { padding: 0.5rem 5%; } .skills-container { grid-template-columns: 1fr; } }
/* Ortak CSS */
        :root { --bg-color: #1e293b; --card-bg: #334155; --accent-color: #38bdf8; --secondary-accent: #818cf8; --text-main: #f1f5f9; --text-muted: #94a3b8; --border: rgba(255, 255, 255, 0.1); }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Poppins', sans-serif; background-color: var(--bg-color); color: var(--text-main); line-height: 1.6; overflow-x: hidden; }
        nav { position: fixed; top: 0; width: 100%; background: rgba(30, 41, 59, 0.95); backdrop-filter: blur(12px); padding: 1rem 5%; display: flex; justify-content: space-between; align-items: center; z-index: 1000; border-bottom: 1px solid var(--border); height: 80px; }
        .logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
        .logo-symbol { width: 40px; height: 40px; background: linear-gradient(135deg, var(--accent-color), var(--secondary-accent)); border-radius: 10px; display: flex; align-items: center; justify-content: center; color: white; font-weight: 800; font-family: 'Fira Code', monospace; font-size: 1.1rem; }
        .logo-text { font-size: 1.3rem; font-weight: 700; display: flex; flex-direction: column; line-height: 1; }
        .logo-subtitle { font-size: 0.7rem; font-weight: 400; color: var(--text-muted); letter-spacing: 2px; text-transform: uppercase; }
        .nav-right { display: flex; align-items: center; gap: 2rem; }
        .nav-links { display: flex; gap: 2rem; list-style: none; }
        .nav-links a { color: var(--text-main); text-decoration: none; font-weight: 500; transition: color 0.3s; position: relative; }
        .nav-links a.active { color: var(--accent-color); }
        .nav-links a:hover { color: var(--accent-color); }
        .lang-btn { background: rgba(255, 255, 255, 0.1); border: 1px solid var(--border); color: var(--text-main); padding: 0.5rem 1rem; border-radius: 20px; cursor: pointer; font-weight: 600; display: flex; align-items: center; gap: 8px; transition: all 0.3s; }
        .hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; z-index: 1002; }
        .bar { width: 25px; height: 3px; background-color: var(--text-main); border-radius: 2px; transition: 0.3s; }
        .mobile-menu { position: fixed; top: 0; right: -100%; width: 70%; height: 100vh; background: rgba(30, 41, 59, 0.98); z-index: 1001; display: flex; flex-direction: column; justify-content: center; align-items: center; transition: 0.4s; }
        .mobile-menu.active { right: 0; }
        .mobile-menu ul { list-style: none; text-align: center; gap: 2rem; display: flex; flex-direction: column; }
        .mobile-menu a { color: var(--text-main); text-decoration: none; font-size: 1.2rem; font-weight: 600; }
        .hamburger.active .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .hamburger.active .bar:nth-child(2) { opacity: 0; }
        .hamburger.active .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
        .bg-glow { position: fixed; width: 500px; height: 500px; filter: blur(150px); opacity: 0.2; border-radius: 50%; z-index: 0; transition: transform 0.1s linear; pointer-events: none; }
        .glow-1 { top: -10%; left: -10%; background: #9333ea; }
        .glow-2 { bottom: 10%; right: -10%; background: var(--accent-color); }
        .cursor-glow { position: fixed; width: 600px; height: 600px; background: radial-gradient(circle, rgba(56,189,248,0.1) 0%, rgba(0,0,0,0) 70%); border-radius: 50%; pointer-events: none; transform: translate(-50%, -50%); z-index: 0; }

        /* SAYFAYA ÖZEL: Contact */
        section { padding: 150px 10% 4rem 10%; position: relative; z-index: 1; }
        .section-title { text-align: center; font-size: 2.5rem; margin-bottom: 4rem; position: relative; }
        .section-title::after { content: ''; position: absolute; bottom: -15px; left: 50%; transform: translateX(-50%); width: 80px; height: 4px; background: var(--accent-color); border-radius: 2px; }
        
        .contact-container { max-width: 700px; margin: 0 auto; text-align: center; background: rgba(30, 41, 59, 0.6); padding: 3rem; border-radius: 20px; border: 1px solid var(--border); backdrop-filter: blur(10px); }
        .social-links { display: flex; justify-content: center; gap: 2.5rem; margin-top: 3rem; }
        .social-icon { font-size: 2.2rem; color: var(--text-muted); transition: all 0.3s; position: relative; }
        .social-icon:hover { color: var(--accent-color); transform: translateY(-5px); }
        .email-btn { display: inline-block; margin-top: 1rem; padding: 1.2rem 3.5rem; background: transparent; border: 2px solid var(--accent-color); color: var(--accent-color); text-decoration: none; border-radius: 50px; font-weight: 600; font-size: 1.1rem; transition: all 0.3s; letter-spacing: 1px; }
        .email-btn:hover { background: var(--accent-color); color: #fff; box-shadow: 0 0 20px rgba(56, 189, 248, 0.4); }
        footer { text-align: center; padding: 2rem; border-top: 1px solid var(--border); color: var(--text-muted); font-size: 0.9rem; margin-top: 4rem; }

        @media (max-width: 768px) { .nav-right { display: none; } .hamburger { display: flex; } nav { padding: 0.5rem 5%; } .email-btn { padding: 1rem 2rem; font-size: 1rem; } }