@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=DM+Sans:wght@300;400;500;600&display=swap');

:root {
  --bg:#0d0d0d; --bg2:#141414; --bg3:#1c1c1c;
  --text:#e8e4de; --text2:#8a8680; --text3:#555;
  --accent:#c8f54a;
  --border:rgba(255,255,255,0.07); --border2:rgba(255,255,255,0.13);
  --nav-bg:rgba(13,13,13,0.95);
  --tag-bg:#222; --tag-text:#a8a29e; --input-bg:#1a1a1a;
}
[data-theme="light"] {
  --bg:#f5f2ec; --bg2:#eeebe4; --bg3:#e6e2da;
  --text:#1a1916; --text2:#6b6760; --text3:#aaa;
  --accent:#3d6b00;
  --border:rgba(0,0,0,0.07); --border2:rgba(0,0,0,0.13);
  --nav-bg:rgba(245,242,236,0.95);
  --tag-bg:#ede9e0; --tag-text:#6b6760; --input-bg:#fff;
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--text);transition:background .3s,color .3s;min-height:100vh;}

/* ── NAV ── */
nav{
  position:fixed;top:0;left:0;right:0;z-index:300;
  background:var(--nav-bg);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
  height:60px;padding:0 2rem;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-logo{
  font-family:'Space Mono',monospace;font-size:15px;font-weight:700;
  color:var(--text);text-decoration:none;letter-spacing:-0.5px;
  position:relative;z-index:400;
}
.nav-logo span{color:var(--accent);}
.nav-right{display:flex;align-items:center;gap:1.5rem;}
.nav-links{display:flex;align-items:center;gap:2rem;}
.nav-links a{font-size:13px;color:var(--text2);text-decoration:none;letter-spacing:.3px;transition:color .2s;}
.nav-links a:hover{color:var(--text);}
.nav-links a.active{color:var(--text);border-bottom:1px solid var(--accent);padding-bottom:2px;}

/* tema toggle */
.theme-btn{
  width:40px;height:22px;background:var(--bg3);border:1px solid var(--border2);
  border-radius:11px;cursor:pointer;position:relative;transition:background .3s;flex-shrink:0;
}
.theme-btn::after{
  content:'';width:16px;height:16px;background:var(--accent);border-radius:50%;
  position:absolute;top:2px;left:2px;transition:transform .3s;
}
[data-theme="light"] .theme-btn::after{transform:translateX(18px);}

/* ── HAMBURGER ── */
.hamburger{
  display:none;
  flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;background:none;border:none;cursor:pointer;
  padding:8px;z-index:400;flex-shrink:0;
}
.hamburger span{
  display:block;width:22px;height:2px;background:var(--text);
  border-radius:2px;transition:transform .3s,opacity .3s,width .3s;
  transform-origin:center;
}
.hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.hamburger.open span:nth-child(2){opacity:0;width:0;}
.hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ── MOBİL MENÜ ── */
.mobile-menu{
  display:none;
  position:fixed;inset:0;z-index:200;
  background:var(--bg);
  flex-direction:column;align-items:center;justify-content:center;
  gap:1.75rem;
  opacity:0;transition:opacity .3s;
  padding:2rem;
}
.mobile-menu.open{opacity:1;}
.mobile-menu>a{
  font-family:'Space Mono',monospace;font-size:26px;font-weight:700;
  color:var(--text2);text-decoration:none;letter-spacing:-1px;transition:color .2s;
}
.mobile-menu>a:hover,.mobile-menu>a.active{color:var(--accent);}
.mobile-divider{width:40px;height:1px;background:var(--border2);}
.mobile-cv{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
.mobile-cv a{
  font-family:'Space Mono',monospace;font-size:12px;
  color:var(--accent);border:1px solid var(--accent);
  padding:8px 16px;border-radius:2px;text-decoration:none;
  transition:background .2s;
}
.mobile-cv a:hover{background:rgba(200,245,74,.1);}
.mobile-theme{display:flex;align-items:center;gap:12px;}
.mobile-theme span{font-family:'Space Mono',monospace;font-size:11px;color:var(--text3);}

/* ── SCROLL BAR ── */
.scroll-bar{position:fixed;top:60px;left:0;height:2px;background:var(--accent);width:0;z-index:99;}

/* ── SECTIONS ── */
.section{padding:100px 2rem 5rem;max-width:900px;margin:0 auto;}
.section-header{display:flex;align-items:baseline;gap:1rem;margin-bottom:3rem;flex-wrap:wrap;}
.section-num{font-family:'Space Mono',monospace;font-size:12px;color:var(--accent);letter-spacing:1px;}
.section-title{font-family:'Space Mono',monospace;font-size:clamp(22px,3vw,36px);font-weight:700;letter-spacing:-1px;color:var(--text);}
.section-line{flex:1;height:1px;background:var(--border);min-width:20px;}

/* ── HERO ── */
.hero{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:80px 2rem 4rem;max-width:900px;margin:0 auto;}
.hero-tag{font-family:'Space Mono',monospace;font-size:11px;color:var(--accent);letter-spacing:2px;text-transform:uppercase;margin-bottom:2rem;display:flex;align-items:center;gap:8px;}
.hero-tag::before{content:'';width:24px;height:1px;background:var(--accent);}
.hero h1{font-family:'Space Mono',monospace;font-size:clamp(34px,6vw,72px);font-weight:700;line-height:1.05;letter-spacing:-2px;margin-bottom:1.5rem;}
.hero h1 span{color:var(--accent);}
.hero-desc{font-size:17px;font-weight:300;color:var(--text2);line-height:1.7;max-width:520px;margin-bottom:2rem;}
.hero-btns{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1.5rem;}
.hero-skills{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:2.5rem;}
.skill-tag{font-family:'Space Mono',monospace;font-size:11px;background:var(--tag-bg);color:var(--tag-text);padding:6px 12px;border-radius:2px;border:1px solid var(--border);letter-spacing:.5px;}
.hero-stats{display:flex;gap:3rem;padding-top:2.5rem;border-top:1px solid var(--border);}
.stat-num{font-family:'Space Mono',monospace;font-size:28px;font-weight:700;}
.stat-num span{color:var(--accent);}
.stat-label{font-size:12px;color:var(--text2);margin-top:4px;letter-spacing:.5px;}

/* ── BUTTONS ── */
.btn-primary{background:var(--accent);color:#0d0d0d;border:none;padding:13px 26px;font-family:'DM Sans',sans-serif;font-size:14px;font-weight:600;border-radius:2px;cursor:pointer;text-decoration:none;display:inline-block;transition:opacity .2s,transform .15s;}
.btn-primary:hover{opacity:.85;transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--border2);padding:13px 26px;font-family:'DM Sans',sans-serif;font-size:14px;font-weight:500;border-radius:2px;cursor:pointer;text-decoration:none;display:inline-block;transition:border-color .2s,background .2s;}
.btn-outline:hover{border-color:var(--accent);background:rgba(200,245,74,.05);}

/* ── CV KARTLARI ── */
.cv-group{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:2rem;}
.cv-card{display:flex;align-items:center;gap:16px;background:var(--bg3);border:1px solid var(--border2);border-radius:6px;padding:14px 20px;transition:border-color .2s;flex:1;min-width:150px;}
.cv-card:hover{border-color:var(--accent);}
.cv-lang{font-family:'Space Mono',monospace;font-size:20px;font-weight:700;color:var(--accent);min-width:32px;}
.cv-actions{display:flex;flex-direction:column;gap:5px;}
.cv-btn-view,.cv-btn-dl{font-family:'Space Mono',monospace;font-size:11px;letter-spacing:.5px;text-decoration:none;transition:opacity .2s;}
.cv-btn-view{color:var(--accent);}
.cv-btn-view:hover{opacity:.7;}
.cv-btn-dl{color:var(--text2);}
.cv-btn-dl:hover{color:var(--text);}

/* ── PROJECTS ── */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1px;background:var(--border);border:1px solid var(--border);}
.project-card{background:var(--bg);padding:2rem;position:relative;transition:background .2s;}
.project-card:hover{background:var(--bg3);}
.project-num{font-family:'Space Mono',monospace;font-size:11px;color:var(--text3);margin-bottom:1.5rem;}
.project-arrow{position:absolute;top:2rem;right:2rem;font-size:18px;color:var(--text3);transition:color .2s,transform .2s;}
.project-card:hover .project-arrow{color:var(--accent);transform:translate(2px,-2px);}
.project-title{font-family:'Space Mono',monospace;font-size:16px;font-weight:700;color:var(--text);margin-bottom:.75rem;letter-spacing:-.5px;}
.project-desc{font-size:14px;color:var(--text2);line-height:1.7;font-weight:300;margin-bottom:1.5rem;}
.project-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:1.5rem;}
.project-tag{font-size:10px;font-family:'Space Mono',monospace;background:var(--tag-bg);color:var(--tag-text);padding:4px 8px;border-radius:2px;}
.project-links{display:flex;gap:1rem;}
.project-link{font-size:12px;font-family:'Space Mono',monospace;color:var(--accent);text-decoration:none;letter-spacing:.5px;transition:opacity .2s;}
.project-link:hover{opacity:.7;}

/* ── ABOUT ── */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;margin-bottom:5rem;}
.about-text p{font-size:15px;color:var(--text2);line-height:1.85;font-weight:300;margin-bottom:1.25rem;}
.about-text p strong{color:var(--text);font-weight:600;}
.skills-label{font-family:'Space Mono',monospace;font-size:11px;color:var(--accent);letter-spacing:2px;text-transform:uppercase;margin-bottom:1.25rem;}
.skills-list{display:flex;flex-direction:column;gap:14px;}
.skill-row{display:flex;align-items:center;gap:12px;}
.skill-name{font-family:'Space Mono',monospace;font-size:12px;color:var(--text2);width:80px;flex-shrink:0;}
.skill-bar{flex:1;height:2px;background:var(--border2);border-radius:1px;overflow:hidden;}
.skill-fill{height:100%;background:var(--accent);border-radius:1px;}
.skill-pct{font-family:'Space Mono',monospace;font-size:11px;color:var(--text3);width:36px;text-align:right;}

/* ── CONTACT ── */
.contact-section{border-top:1px solid var(--border);padding-top:4rem;margin-top:2rem;}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;}
.contact-info-title{font-family:'Space Mono',monospace;font-size:22px;font-weight:700;color:var(--text);margin-bottom:1rem;letter-spacing:-.5px;line-height:1.3;}
.contact-info-desc{font-size:15px;color:var(--text2);line-height:1.7;font-weight:300;margin-bottom:2rem;}
.contact-item{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.contact-icon{width:32px;height:32px;background:var(--bg3);border:1px solid var(--border);border-radius:2px;display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;}
.contact-detail a,.contact-detail span{font-size:13px;color:var(--text2);text-decoration:none;font-family:'Space Mono',monospace;}
.contact-detail a:hover{color:var(--accent);}
.contact-form{display:flex;flex-direction:column;gap:12px;}
.form-group{display:flex;flex-direction:column;gap:6px;}
.form-label{font-size:11px;font-family:'Space Mono',monospace;color:var(--text3);letter-spacing:1px;text-transform:uppercase;}
.form-input{background:var(--input-bg);border:1px solid var(--border2);color:var(--text);padding:12px 14px;font-family:'DM Sans',sans-serif;font-size:14px;border-radius:2px;outline:none;transition:border-color .2s;width:100%;}
.form-input:focus{border-color:var(--accent);}
.form-input::placeholder{color:var(--text3);}
textarea.form-input{resize:vertical;min-height:110px;}
.alert{padding:12px 16px;border-radius:2px;font-family:'Space Mono',monospace;font-size:12px;margin-bottom:12px;display:none;}
.alert.success{background:rgba(200,245,74,.1);border:1px solid var(--accent);color:var(--accent);}
.alert.error{background:rgba(255,80,80,.1);border:1px solid #f55;color:#f88;}

/* ── FOOTER ── */
footer{border-top:1px solid var(--border);padding:2rem;text-align:center;}
.footer-text{font-family:'Space Mono',monospace;font-size:12px;color:var(--text3);letter-spacing:.5px;}
.footer-text span{color:var(--accent);}

/* ── ANİMASYONLAR ── */
.fade-in{opacity:0;transform:translateY(18px);animation:fadeUp .6s forwards;}
@keyframes fadeUp{to{opacity:1;transform:translateY(0);}}
.d1{animation-delay:.1s}.d2{animation-delay:.2s}.d3{animation-delay:.3s}
.d4{animation-delay:.4s}.d5{animation-delay:.5s}.d6{animation-delay:.6s}

/* ── RESPONSİVE ── */
@media(max-width:768px){
  /* Nav: linkleri gizle, hamburgeri göster */
  .nav-links{display:none !important;}
  .hamburger{display:flex !important;}
  .mobile-menu{display:flex;}

  /* Hero */
  .hero{padding:80px 1.25rem 3rem;}
  .hero h1{letter-spacing:-1px;}
  .hero-desc{font-size:15px;}
  .hero-btns{flex-direction:column;}
  .hero-btns a{text-align:center;width:100%;}
  .cv-group{flex-direction:column;}
  .cv-card{min-width:unset;}
  .hero-stats{gap:1.5rem;}
  .stat-num{font-size:22px;}

  /* Section */
  .section{padding:80px 1.25rem 3rem;}

  /* Grids */
  .projects-grid{grid-template-columns:1fr;}
  .about-grid{grid-template-columns:1fr;gap:2.5rem;}
  .contact-grid{grid-template-columns:1fr;gap:2.5rem;}

  /* Contact detail text */
  .contact-detail a,.contact-detail span{font-size:11px;}
}

@media(max-width:400px){
  .hero h1{font-size:30px;}
  .btn-primary,.btn-outline{padding:12px 20px;font-size:13px;}
  .mobile-menu>a{font-size:22px;}
}