/*
  Beyza Akaydın - Portfolio
  Koyu tema + responsive + animasyonlar
*/

/* CSS Reset (modern, minimal) */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body, h1, h2, h3, p, ul, li, figure { margin: 0; padding: 0; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font: inherit; color: inherit; }

/* Tema Değişkenleri */
:root {
  --bg: #0d1117;
  --bg-soft: #141821;
  --text: #f5f7fb;
  --text-dim: #d6dbe6;
  --white: #ffffff;
  --primary: #c38fff; /* lavanta */
  --primary-10: rgba(195, 143, 255, 0.14);
  --primary-20: rgba(195, 143, 255, 0.24);
  --rose: #ffb3c7;   /* yumuşak pembe */
  --soft-gray: #e9ecf3; /* pastel gri/beyaz arası */
  --soft-gray-10: rgba(233, 236, 243, 0.1);
  --shadow: rgba(0,0,0,0.38);
  --radius: 16px;
  --radius-sm: 12px;
  --container: 1120px;
  --transition: 0.3s ease-in-out;
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
}

/* Global */
body {
  background: radial-gradient(1200px 600px at 20% 20%, rgba(124,58,237,0.08), transparent 60%),
              radial-gradient(1000px 500px at 80% 70%, rgba(236,72,153,0.06), transparent 60%),
              radial-gradient(900px 480px at 50% 10%, rgba(56,189,248,0.06), transparent 60%),
              var(--bg);
  color: var(--text);
  font-family: 'Roboto', system-ui, -apple-system, Segoe UI, Helvetica, Arial, sans-serif;
  line-height: 1.7;
  overflow-x: hidden; /* prevent tiny horizontal scroll on narrow devices */
}

/* Oyun benzeri ince grid overlay + yıldız alanı */
body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
/* Grid */
body::before {
  background-image:
    linear-gradient(rgba(148,163,184,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,0.05) 1px, transparent 1px);
  background-size: 44px 44px, 44px 44px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 60%, transparent 100%);
}
/* Stars */
@keyframes twinkle { 50% { opacity: 0.4; transform: translateY(-1px); } }
body::after {
  background:
    radial-gradient(2px 2px at 10% 20%, rgba(255,255,255,0.5), transparent 60%),
    radial-gradient(1.5px 1.5px at 30% 70%, rgba(255,255,255,0.4), transparent 60%),
    radial-gradient(1.6px 1.6px at 70% 30%, rgba(255,255,255,0.45), transparent 60%),
    radial-gradient(1.2px 1.2px at 85% 60%, rgba(255,255,255,0.35), transparent 60%);
  animation: twinkle 6s var(--transition) infinite;
}
/* Body scroll lock when modal is open */
body.no-scroll { overflow: hidden; }

.skip-link {
  position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden;
}
.skip-link:focus { left: 16px; top: 16px; width: auto; height: auto; padding: 8px 12px; background: var(--primary); color: #00110e; border-radius: 8px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }

.section-title {
  font-family: 'Poppins', 'Roboto', sans-serif;
  font-weight: 700; /* daha modern, kalın başlık */
  font-size: 32px;
  margin-bottom: 28px;
  background: linear-gradient(90deg, #60a5fa, #a78bfa, #f472b6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 12px rgba(96,165,250,0.25), 0 0 28px rgba(167,139,250,0.15);
}

/* Navbar */
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: saturate(140%) blur(8px); }
.navbar { background: rgba(13, 17, 23, 0.72); border-bottom: 1px solid rgba(240, 246, 252, 0.08); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; flex-direction: column; text-decoration: none; color: var(--text); margin-left: -8px; }
.brand .brand-row { display: inline-flex; align-items: center; gap: 8px; }
.brand .brand-text { display: inline-flex; flex-direction: column; }
.brand .brand-icon { width: 32px; height: 32px; border-radius: 6px; }
.brand-name { font-family: 'Poppins', 'Roboto', sans-serif; font-weight: 600; letter-spacing: 0.2px; }
.brand-role { font-size: 12px; color: var(--text-dim); }

.nav-toggle { display: none; background: transparent; border: 0; cursor: pointer; }
.nav-toggle .bar { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; transition: var(--transition); }

.nav-menu { display: flex; align-items: center; gap: 20px; }
.nav-link { color: var(--text); text-decoration: none; padding: 10px 12px; border-radius: 999px; transition: var(--transition); border: 1px solid transparent; outline: none; position: relative; }
.nav-link:hover { background: var(--primary-10); color: var(--white); border-color: var(--primary-20); }
.nav-link:focus-visible { box-shadow: 0 0 0 3px rgba(110,168,255,0.28); border-color: rgba(110,168,255,0.4); }

/* Aktif menü için hafif neon alt çizgi */
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 6px;
  height: 2px;
  background: linear-gradient(90deg, #60a5fa, #a78bfa, #f472b6);
  box-shadow: 0 0 10px rgba(167,139,250,0.55), 0 0 16px rgba(96,165,250,0.35);
  border-radius: 2px;
}

.hero { position: relative; min-height: 82vh; display: grid; align-items: center; overflow: hidden; }
.hero-inner { padding-top: 32px; padding-bottom: 32px; }
.hero-content { max-width: 720px; }
.hero-title { font-family: 'Poppins', 'Roboto', sans-serif; font-size: 44px; line-height: 1.15; margin-bottom: 12px; letter-spacing: 0.2px; }
.accent { color: transparent; background: linear-gradient(90deg, #60a5fa, #a78bfa, #f472b6); -webkit-background-clip: text; background-clip: text; text-shadow: 0 0 24px rgba(99,102,241,0.4), 0 0 48px rgba(236,72,153,0.2); }
.hero-subtitle { font-size: 18px; color: var(--text-dim); margin-bottom: 12px; }
.hero-text { color: var(--text-dim); margin-bottom: 22px; }
.hero-actions { display: flex; gap: 12px; }

/* Typing caret for hero subtitle */
.typing::after { content: "|"; margin-left: 4px; opacity: 0.8; animation: caretBlink 1s steps(1, end) infinite; }
@keyframes caretBlink { 50% { opacity: 0; } }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 18px; border-radius: 999px; text-decoration: none; border: 1px solid transparent; transition: transform var(--transition), background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition); }
.btn.small { padding: 8px 12px; font-size: 14px; }
.btn.primary { background: linear-gradient(135deg, #60a5fa, #a78bfa 45%, #f472b6); color: #07111a; font-weight: 700; letter-spacing: .2px; box-shadow: 0 10px 24px -12px rgba(96,165,250,0.85), 0 0 0 1px rgba(167,139,250,0.28) inset; }
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 22px 54px -18px rgba(167,139,250,0.9), 0 0 0 3px rgba(96,165,250,0.22); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--primary-20); }
.btn.ghost:hover { background: rgba(96,165,250,0.08); border-color: rgba(167,139,250,0.5); box-shadow: 0 0 0 3px rgba(96,165,250,0.14), inset 0 0 0 1px rgba(167,139,250,0.25); }
/* Focus görünürlüğü */
.btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(110,168,255,0.28), 0 0 0 6px rgba(110,168,255,0.16); }

/* Futuristik konstelasyoın katmanı */
.constellation { position: absolute; inset: 0; z-index: 0; opacity: 0.9; pointer-events: none; }
.hero .hero-content { position: relative; z-index: 1; }
.hero .hero-actions .btn { position: relative; z-index: 1; }

.hero-bg { position: absolute; inset: -20%; pointer-events: none; background:
  radial-gradient(680px 240px at 20% 30%, rgba(195, 143, 255, 0.16), transparent 60%),
  radial-gradient(680px 240px at 80% 70%, rgba(255, 179, 199, 0.16), transparent 60%),
  linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.2) 100%);
  animation: floatBg 12s ease-in-out infinite alternate;
  z-index: 0;
}

@keyframes floatBg {
  from { transform: translateY(-12px) scale(1.02); }
  to { transform: translateY(12px) scale(1.05); }
}

/* About */
.about-columns { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 28px; align-items: start; position: relative; }
.about-right-top { margin-bottom: 16px; }
.about-photo { display: none; }
.about-subtitle { font-family: 'Poppins','Roboto',sans-serif; font-size: 18px; font-weight: 700; margin: 8px 0 12px; letter-spacing: 0.2px; color: var(--text); }
.about-left .timeline, .about-right .timeline { display: grid; gap: 14px; }
.about-left .timeline-item { background: var(--bg-soft); border: 1px solid rgba(240,246,252,0.06); padding: 16px; border-radius: var(--radius); }
.about-right .cert-list { display: grid; gap: 10px; margin-bottom: 14px; }
.cert-item { background: var(--bg-soft); border: 1px solid rgba(240,246,252,0.06); padding: 12px 14px; border-radius: var(--radius-sm); color: var(--text-dim); }

/* Neon rozet (yuvarlak piksel tarzı) */
.badge-cloud { display: flex; flex-wrap: wrap; gap: 10px 12px; }
.badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 14px; /* yuvarlak piksel hissi için küçük radius */
  background: linear-gradient(135deg, rgba(96,165,250,0.12), rgba(167,139,250,0.12));
  color: var(--text);
  border: 1px solid rgba(167,139,250,0.35);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03), 0 4px 16px -10px rgba(99,102,241,0.6);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.badge::before {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 16px;
  padding: 2px;
  background: conic-gradient(from 0deg, #60a5fa, #a78bfa, #f472b6, #60a5fa);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0.35;
  pointer-events: none;
  transition: opacity var(--transition);
}
.badge:hover { transform: translateY(-2px); box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05), 0 10px 24px -12px rgba(167,139,250,0.8); border-color: rgba(167,139,250,0.6); }
.badge:hover::before { opacity: 0.55; }

/* About retro grid/neon highlight */
.about { position: relative; }
.about::before { content: ""; position: absolute; inset: 8% 0 0 0; background:
  radial-gradient(600px 220px at 12% 14%, rgba(96,165,250,0.10), transparent 60%),
  radial-gradient(560px 200px at 88% 70%, rgba(244,114,182,0.10), transparent 60%);
  pointer-events: none; z-index: 0; }
.about .container { position: relative; z-index: 1; }
.skills { margin-top: 18px; }
.skills-title { font-size: 18px; margin-bottom: 10px; color: var(--text-dim); }
.skills-list { display: flex; flex-wrap: wrap; gap: 10px 16px; }
.skill { position: relative; display: inline-flex; align-items: center; gap: 8px; background: var(--bg-soft); border: 1px solid var(--primary-20); color: var(--text); padding: 8px 12px; border-radius: 999px; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.02); z-index: 0; }
/* Neon hareketli dış çizgi */
.skill::before { content: ""; position: absolute; inset: -2px; border-radius: inherit; padding: 2px; background: conic-gradient(from 0deg, var(--primary) 0 12deg, transparent 12deg 360deg); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; animation: neonSpin 8s linear infinite; opacity: 0.55; z-index: -1; pointer-events: none; }

@keyframes neonSpin { to { transform: rotate(1turn); } }

/* Hover’da hafif hızlanma ve parlama */
.skills-cloud .skill:hover::before { animation-duration: 5s; opacity: 0.7; }
.skills-cloud .skill:hover::after { opacity: 0.4; }

/* Hareket azaltma tercihi */
@media (prefers-reduced-motion: reduce) {
  .skill::before { animation: none; }
}
.ic { filter: drop-shadow(0 1px 0 rgba(0,0,0,0.2)); }

/* Skills Cloud with motion */
.skills-cloud { row-gap: 14px; }
.skills-cloud .skill { position: relative; transform: translateY(12px) scale(0.96); opacity: 0; transition: transform 700ms var(--transition), opacity 700ms var(--transition), box-shadow var(--transition); }
.skills-cloud .skill.visible { transform: translateY(0) scale(1); opacity: 1; }
.skills-cloud .skill:hover { box-shadow: 0 10px 24px -14px var(--shadow); transform: translateY(-2px) scale(1.02); }

/* Projects */
.projects-grid { display: grid; grid-template-columns: 1fr; gap: 22px; }
.project-card { background: var(--bg-soft); border: 1px solid rgba(240,246,252,0.06); border-radius: 18px; overflow: hidden; transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.project-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px -20px var(--shadow); border-color: var(--primary-20); }
.project-media { position: relative; overflow: hidden; }
.project-media img { aspect-ratio: 16/9; object-fit: cover; transition: transform var(--transition); }
.project-card:hover .project-media img { transform: scale(1.06); }
.overlay { position: absolute; inset: 0; display: grid; place-content: center; gap: 8px; padding: 18px; text-align: center; background: linear-gradient(180deg, rgba(0,0,0,0) 20%, rgba(10,11,14,0.72) 100%); opacity: 0; transition: opacity var(--transition); }
.project-card:hover .overlay { opacity: 1; }
.project-title { font-size: 18px; font-weight: 700; padding: 12px 16px 0; letter-spacing: 0.2px; }
.project-desc { color: var(--text-dim); padding: 6px 16px 16px; }
.tech { color: var(--text-dim); font-size: 14px; margin-bottom: 8px; }
.links { display: flex; justify-content: center; gap: 10px; }
.links .btn svg { width: 16px; height: 16px; opacity: 0.9; }

/* Projects CTA */
.projects-cta { display: grid; place-content: center; margin-top: 16px; }

/* Zigzag projects (projects.html) */
.zigzag { display: grid; gap: 26px; }
.zz-item { display: grid; grid-template-columns: 1fr; gap: 20px; align-items: start; background: var(--bg-soft); border: 1px solid rgba(240,246,252,0.06); border-radius: 18px; overflow: hidden; position: relative; }
.zz-item > .zz-content, .zz-item > .zz-media { min-width: 0; }
.zz-item:nth-child(even) { grid-template-columns: 0.85fr 1.15fr; }
.zz-item::before { content: ""; position: absolute; inset: -2px; border-radius: 20px; padding: 2px; background: conic-gradient(from 0deg, #60a5fa, #a78bfa, #f472b6, #60a5fa); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0.18; pointer-events: none; transition: opacity var(--transition); }
.zz-item:hover::before { opacity: 0.36; }
.zz-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16/9; display: block; }
.zz-media { position: relative; }
.demo-btn { position: absolute; right: 12px; bottom: 12px; background: rgba(13, 17, 23, 0.85); backdrop-filter: blur(4px); border: 1px solid var(--primary-20); color: var(--white); z-index: 2; display: flex; align-items: center; gap: 6px; opacity: 0; transform: translateY(8px); transition: all var(--transition); }
.zz-content { padding: 20px 24px; text-align: left; }
.project-kicker { color: var(--text-dim); font-size: 13px; letter-spacing: .3px; text-transform: none; margin-bottom: 4px; }
.zz-content .project-title { font-size: 20px; margin-bottom: 6px; }
.project-meta { color: var(--text-dim); font-size: 14px; margin-bottom: 6px; }
.zz-content .project-desc { color: var(--text-dim); margin-bottom: 10px; }
.tech-line { display: flex; flex-wrap: wrap; gap: 8px 10px; margin-bottom: 10px; }
.tech-line { word-break: break-word; }
.tech-line span { display: inline-flex; align-items: center; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--primary-20); background: rgba(96,165,250,0.08); color: var(--text); font-size: 13px; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.02); animation: fadeInUp .6s var(--transition) both; }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* Timeline / Education minimal styles */
.timeline { display: grid; gap: 16px; }
.timeline-item { position: relative; background: var(--bg-soft); border: 1px solid rgba(240,246,252,0.06); padding: 18px; border-radius: var(--radius); overflow: hidden; }
.timeline-item::before { content: ""; position: absolute; inset: -2px; border-radius: calc(var(--radius) + 2px); padding: 2px; background: conic-gradient(from 0deg, #60a5fa, #a78bfa, #f472b6, #60a5fa); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0.22; transition: opacity var(--transition), filter var(--transition); pointer-events: none; }
.timeline-item:hover::before { opacity: 0.42; filter: drop-shadow(0 0 12px rgba(167,139,250,0.35)); }
.timeline-item::after { content: ""; position: absolute; inset: 0; background: radial-gradient(400px 120px at 10% 0%, rgba(96,165,250,0.10), transparent 60%); opacity: 0.25; pointer-events: none; }
.timeline-header { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.timeline-header h3 { font-size: 18px; font-weight: 700; }
.timeline-header .time { color: var(--text-dim); font-size: 11px; }
.timeline-list { padding-left: 18px; }
.timeline-list li { list-style: disc; color: var(--text-dim); }

/* CV modal düzeni */
.cv-grid { display: grid; gap: 14px; }
.cv-head { font-weight: 700; margin: 8px 0; color: var(--text); }
.cv-item { background: var(--bg-soft); border: 1px solid rgba(240,246,252,0.06); padding: 12px; border-radius: var(--radius-sm); }
.cv-item-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; color: var(--text); }
.cv-list.small li { color: var(--text-dim); }
.about-text { color: var(--text-dim); margin-bottom: 12px; }
.about-actions { margin-bottom: 16px; }

.edu { display: grid; gap: 12px; }
.edu-item { background: var(--bg-soft); border: 1px solid rgba(240,246,252,0.06); padding: 18px; border-radius: var(--radius); }
.edu-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 24px; align-items: stretch; }
.contact-form { background: var(--bg-soft); border: 1px solid var(--primary-20); padding: 22px; border-radius: var(--radius); }
.form-field { display: grid; gap: 8px; margin-bottom: 14px; }
.form-field label { color: var(--text-dim); }
.form-field input, .form-field textarea { background: #0b0f14; border: 1px solid rgba(240,246,252,0.08); border-radius: 12px; padding: 12px 14px; color: var(--text); outline: none; transition: border-color var(--transition), box-shadow var(--transition); }
.form-field input:focus, .form-field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-10); }
.error { color: #ff8f8f; font-size: 12px; min-height: 16px; }
.form-success {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--success);
  background: var(--success-bg);
  padding: 12px 16px;
  border-radius: 6px;
  margin-top: 16px;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.form-success.show-success {
  opacity: 1;
  transform: translateY(0);
}

.form-success svg {
  width: 20px;
  height: 20px;
  color: var(--success);
}

/* Contact bilgileri stilleri */
.contact-info { position: relative; background: var(--bg-soft); border: 1px solid var(--primary-20); padding: 22px; border-radius: var(--radius); height: 100%; display: flex; flex-direction: column; gap: 12px; box-shadow: 0 18px 40px -24px var(--shadow), inset 0 0 0 1px rgba(255,255,255,0.02); }
.contact-info::before { content: ""; position: absolute; inset: -2px; border-radius: calc(var(--radius) + 2px); padding: 2px; background: conic-gradient(from 0deg, #60a5fa, #a78bfa, #f472b6, #60a5fa); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; opacity: 0.12; pointer-events: none; transition: opacity var(--transition); }
.contact-info:hover::before { opacity: 0.24; }
.contact-details { display: grid; gap: 5px; margin-bottom: 14px; }
.contact-head { font-family: 'Poppins','Roboto',sans-serif; font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 8px; letter-spacing: 0.2px; }
.detail-row { display: grid; grid-template-columns: 22px 1fr; align-items: center; gap: 10px; background: transparent; border: 1px solid rgba(240,246,252,0.08); border-radius: 12px; padding: 10px 12px; }
.detail-icon { width: 22px; height: 22px; display: inline-grid; place-content: center; color: var(--text-dim); }
.detail-label { color: var(--text-dim); font-size: 14px; }
.detail-value { color: var(--text); text-decoration: none; }
.detail-value:hover { text-decoration: underline; }
.neon-sep { height: 1px; width: 60%; margin: 14px auto 12px; background: linear-gradient(90deg, rgba(96,165,250,0), rgba(96,165,250,0.9), rgba(244,114,182,0.9), rgba(96,165,250,0)); box-shadow: 0 0 12px rgba(167,139,250,0.6), 0 0 24px rgba(244,114,182,0.35); opacity: 0.8; }
.socials { display: flex; justify-content: center; align-items: center; gap: 12px; margin-top: 8px; flex-wrap: wrap; }
.socials li { list-style: none; }
.socials a { color: var(--text); text-decoration: none; padding: 10px 12px; border-radius: 999px; border: 1px solid var(--primary-20); transition: var(--transition); display: inline-flex; align-items: center; }
.socials a:hover { border-color: var(--primary); background: var(--primary-10); }

/* Footer */
.site-footer { border-top: 1px solid rgba(240,246,252,0.06); padding: 24px 0; color: var(--text-dim); background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(15,18,24,0.6) 100%); }
.footer-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 18px; padding-top: 6px; padding-bottom: 6px; }
.brand.mini { text-decoration: none; color: var(--text); display: inline-flex; flex-direction: column; }
.footer-role { font-size: 12px; color: var(--text-dim); }
.footer-nav { display: flex; gap: 14px; }
.footer-nav a { color: var(--text-dim); text-decoration: none; padding: 8px 10px; border-radius: 999px; border: 1px solid transparent; transition: var(--transition); }
.footer-nav a:hover { color: var(--white); border-color: var(--primary-20); background: var(--primary-10); }
.footer-socials { display: flex; gap: 10px; }
.footer-socials a { color: var(--text); display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 999px; border: 1px solid var(--primary-20); transition: var(--transition); }
.footer-socials a:hover { background: var(--primary-10); border-color: var(--primary); }
.footer-bottom { display: grid; place-content: center; padding-top: 6px; color: var(--text-dim); font-size: 14px; border-top: 1px solid rgba(240,246,252,0.06); margin-top: 10px; }

/* Reveal on Scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* Modal + Slider */
.modal { position: fixed; inset: 0; display: none; z-index: 100; }
.modal:target { display: block; }
/* Ensure JS-driven state always wins */
.modal[aria-hidden="true"] { display: none !important; }
.modal[aria-hidden="false"] { display: block !important; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(2px); }
.modal-dialog { position: relative; max-width: 960px; margin: 6vh auto; background: var(--bg-soft); border: 1px solid var(--primary-20); border-radius: var(--radius); padding: 16px; box-shadow: 0 30px 80px -30px rgba(0,0,0,0.6); }
.modal-title { font-family: 'Sora','Inter',sans-serif; font-weight: 600; margin: 6px 6px 12px; }
.modal-close { position: absolute; right: 12px; top: 8px; border: 0; background: transparent; color: var(--text); font-size: 22px; cursor: pointer; }

.slider { position: relative; overflow: hidden; border-radius: calc(var(--radius) - 4px); }
.slider input { display: none; }
.slides { display: grid; grid-auto-flow: column; grid-auto-columns: 100%; transition: transform 0.6s var(--transition); }
.slide { width: 100%; }
.slide img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  aspect-ratio: 16/9;
  background: var(--bg);
}

/* Dots */
.dots { display: flex; justify-content: center; gap: 8px; padding: 10px 0 4px; }
.dots label { width: 10px; height: 10px; border-radius: 999px; background: rgba(255,255,255,0.2); cursor: pointer; transition: background var(--transition), transform var(--transition); }

/* Arrows (label-hack) */
.arrows label {
  position: absolute;
  top: 50%;
  width: 40px;
  height: 40px;
  transform: translateY(-50%);
  cursor: pointer;
  background: rgba(13, 17, 23, 0.85);
  border: 1px solid var(--primary-20);
  border-radius: 50%;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  z-index: 10;
  opacity: 0.9;
}

.arrows label.prev1,
.arrows label.prev2,
.arrows label.prev3 { left: 12px; }

.arrows label.next1,
.arrows label.next2,
.arrows label.next3 { right: 12px; }

/* Ok tuşlarının görünürlüğü */
#oee-s1:checked ~ .arrows .prev1,
#oee-s1:checked ~ .arrows .next1,
#oee-s2:checked ~ .arrows .prev2,
#oee-s2:checked ~ .arrows .next2,
#oee-s3:checked ~ .arrows .prev3,
#oee-s3:checked ~ .arrows .next3 {
  display: flex;
}

/* Her slayt için ok görünürlüğü (index.html için) */
#oee-slide-s1:checked ~ .arrows .prev1,
#oee-slide-s2:checked ~ .arrows .prev2,
#oee-slide-s3:checked ~ .arrows .prev3,
#oee-slide-s1:checked ~ .arrows .next1,
#oee-slide-s2:checked ~ .arrows .next2,
#oee-slide-s3:checked ~ .arrows .next3,
#vardiya-slide-s1:checked ~ .arrows .prev1,
#vardiya-slide-s2:checked ~ .arrows .prev2,
#vardiya-slide-s3:checked ~ .arrows .prev3,
#vardiya-slide-s1:checked ~ .arrows .next1,
#vardiya-slide-s2:checked ~ .arrows .next2,
#vardiya-slide-s3:checked ~ .arrows .next3,
#survey-slide-s1:checked ~ .arrows .prev1,
#survey-slide-s2:checked ~ .arrows .prev2,
#survey-slide-s3:checked ~ .arrows .prev3,
#survey-slide-s1:checked ~ .arrows .next1,
#survey-slide-s2:checked ~ .arrows .next2,
#survey-slide-s3:checked ~ .arrows .next3 {
  display: flex;
  color: var(--white); /* Ok rengi beyaz yapıldı */
}

/* Varsayılan olarak okları gizle */
.arrows label {
  display: none;
}

/* Ok pozisyonları */
.prev1, .prev2, .prev3 { left: 12px; }
.next1, .next2, .next3 { right: 12px; }

/* Slider radio kontrolü */
#oee-s1:checked ~ .slides { transform: translateX(0); }
#oee-s2:checked ~ .slides { transform: translateX(-100%); }
#oee-s3:checked ~ .slides { transform: translateX(-200%); }

#vardiya-s1:checked ~ .slides { transform: translateX(0); }
#vardiya-s2:checked ~ .slides { transform: translateX(-100%); }
#vardiya-s3:checked ~ .slides { transform: translateX(-200%); }
#vardiya-s4:checked ~ .slides { transform: translateX(-300%); }

/* 4. slayt için ok görünürlüğü */
#vardiya-s1:checked ~ .arrows .prev1,
#vardiya-s1:checked ~ .arrows .next1,
#vardiya-s2:checked ~ .arrows .prev2,
#vardiya-s2:checked ~ .arrows .next2,
#vardiya-s3:checked ~ .arrows .prev3,
#vardiya-s3:checked ~ .arrows .next3,
#vardiya-s4:checked ~ .arrows .prev4,
#vardiya-s4:checked ~ .arrows .next4 {
  display: flex;
}

/* Ok pozisyonları (4. slayt için) */
.prev4, .next4 { display: none; }
.prev4 { left: 12px; }
.next4 { right: 12px; }

/* 4. slayt için aktif dot */
#vardiya-s4:checked ~ .dots label:nth-child(4) {
  background: var(--primary);
  transform: scale(1.2);
}

/* Aktif noktanın belirginleşmesi için */
#oee-s1:checked ~ .dots label:nth-child(1),
#oee-s2:checked ~ .dots label:nth-child(2),
#oee-s3:checked ~ .dots label:nth-child(3),
#vardiya-s1:checked ~ .dots label:nth-child(1),
#vardiya-s2:checked ~ .dots label:nth-child(2),
#vardiya-s3:checked ~ .dots label:nth-child(3),
#vardiya-s4:checked ~ .dots label:nth-child(4) {
  background: var(--primary);
  transform: scale(1.2);
  box-shadow: 0 0 8px var(--primary);
}

/* Slider radio kontrollerine survey ekleyelim */
#survey-s1:checked ~ .slides { transform: translateX(0); }
#survey-s2:checked ~ .slides { transform: translateX(-100%); }
#survey-s3:checked ~ .slides { transform: translateX(-200%); }
#survey-s4:checked ~ .slides { transform: translateX(-300%); }

/* Survey için ok görünürlüğü */
#survey-s1:checked ~ .arrows .prev1,
#survey-s1:checked ~ .arrows .next1,
#survey-s2:checked ~ .arrows .prev2,
#survey-s2:checked ~ .arrows .next2,
#survey-s3:checked ~ .arrows .prev3,
#survey-s3:checked ~ .arrows .next3,
#survey-s4:checked ~ .arrows .prev4,
#survey-s4:checked ~ .arrows .next4 {
  display: flex;
}

/* Survey için aktif dot */
#survey-s1:checked ~ .dots label:nth-child(1),
#survey-s2:checked ~ .dots label:nth-child(2),

#survey-s3:checked ~ .dots label:nth-child(3),
#survey-s4:checked ~ .dots label:nth-child(4) {
  background: var(--primary);
  transform: scale(1.2);
  box-shadow: 0 0 8px var(--primary);
}

/* Responsive */

/* Large laptops / iPad Pro landscape */
@media (max-width: 1366px) {
  .zz-item { grid-template-columns: 1fr 1fr; }
  .zz-item:nth-child(even) { grid-template-columns: 1fr 1fr; }
  .projects-grid { gap: 18px; }
}

/* Large tablets (iPad Pro landscape, <=1200px) */
@media (max-width: 1200px) {
  .zz-item { grid-template-columns: 1fr 1fr; }
  .zz-item:nth-child(even) { grid-template-columns: 1fr 1fr; }
  .projects-grid { gap: 18px; }
}

/* Tablets (<=1024px): fine-tune spacing; keep 2 columns (stack handled at <=900px) */
@media (max-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .about-columns { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  /* Do not force zigzag to stack here; stacking occurs at <=900px */
  .zz-content { padding: 16px; }
  .modal-dialog { margin: 8vh 16px; }
}

/* Tablets (iPad mini portrait, <=900px) */
@media (max-width: 900px) {
  .zz-item, .zz-item:nth-child(even) { grid-template-columns: 1fr; }
  .zz-content { padding: 14px; }
  .zz-media img { aspect-ratio: 16/9; height: auto; }
  .projects-grid { gap: 16px; grid-template-columns: 1fr; }
  .project-title { font-size: 17px; }
  .project-desc { font-size: 14px; }
}

@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-menu { position: absolute; right: 20px; top: 64px; background: rgba(13, 17, 23, 0.98); border: 1px solid rgba(240,246,252,0.06); border-radius: 12px; padding: 10px; display: none; flex-direction: column; min-width: 180px; }
  .nav-menu.open { display: flex; }
  .projects-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 32px; }
  .zz-item, .zz-item:nth-child(even) { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 10px; justify-items: center; }
  .footer-nav { flex-wrap: wrap; justify-content: center; }
  .zz-content { padding: 14px; }
  .tech-line span { font-size: 12px; padding: 5px 8px; }
  .modal-dialog { margin: 8vh 12px; }
  .brand { margin-left: -6px; }
  .brand .brand-icon { width: 24px; height: 24px; border-radius: 5px; }
}

/* Phablets/smaller tablets (<=840px) */
@media (max-width: 840px) {
  .projects-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero { min-height: auto; }
  .hero-title { font-size: 28px; }
  .hero-subtitle { font-size: 16px; }
  .container { padding: 0 16px; }
}

/* Small phones (Galaxy S8+, <=400px width) */
@media (max-width: 400px) {
  .container { padding: 0 12px; }
  .section { padding: 48px 0; }
  .zz-content { padding: 12px; }
  .project-title { font-size: 16px; }
  .project-desc { font-size: 13px; }
  .tech-line span { font-size: 11px; padding: 4px 7px; }
  .modal-dialog { margin: 6vh 8px; }
  .arrows label { width: 32px; height: 32px; font-size: 20px; }
}

/* Very small phones (<=360px) - tighten spacing/fonts for Galaxy S8+ */
@media (max-width: 360px) {
  .container { padding: 0 10px; }
  .section { padding: 40px 0; }
  .hero-title { font-size: 24px; }
  .hero-subtitle { font-size: 15px; }
  .zz-content { padding: 10px; }
  .project-title { font-size: 15px; }
  .project-desc { font-size: 12.5px; }
  .tech-line { gap: 6px 8px; }
  .tech-line span { font-size: 10.5px; padding: 3px 6px; }
  .arrows label { width: 28px; height: 28px; font-size: 18px; }
}

/* === Responsive consolidation (simple, predictable across devices) === */
@media (min-width: 768px) {
  /* Tablets: 2 columns */
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .zz-item { grid-template-columns: 1fr 1fr; }
  .zz-item:nth-child(even) { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
  /* Desktops: 3 columns on home, zigzag asymmetric */
  .projects-grid { grid-template-columns: repeat(3, 1fr); }
  .zz-item { grid-template-columns: 1.15fr 0.85fr; }
  .zz-item:nth-child(even) { grid-template-columns: 0.85fr 1.15fr; }
}

@media (min-width: 1280px) {
  .container { max-width: var(--container); }
}

/* Demo butonu hover efekti */
.demo-btn {
  position: absolute;
  right: 12px;
  bottom: 12px;
  background: rgba(13, 17, 23, 0.96); /* Daha koyu zemin */
  backdrop-filter: blur(4px);
  border: 1px solid var(--primary); /* Daha belirgin kenar */
  color: var(--white);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--transition);
}

.demo-btn:hover {
  background: rgba(13, 17, 23, 0.98); /* En koyu arka plan */
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.6), 0 0 0 2px rgba(167,139,250,0.25); /* Hafif neon */
}

/* Force darker background over .btn.ghost specificity */
.project-media .demo-btn.btn.ghost,
.zz-media .demo-btn.btn.ghost {
  background: rgba(13, 17, 23, 0.96) !important;
  border-color: var(--primary) !important;
  color: var(--white) !important;
}

.project-card:hover .demo-btn {
  opacity: 1;
  transform: translateY(0);
}