/* ==========================================================================
   alperenaydiner — style.css
   Design concept: kişisel "veri günlüğü" (field notebook / data log).
   Her proje ve yazı, günlüğe düşülmüş bir kayıt gibi numaralandırılır.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Inter:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --bg: #12151a;
  --bg-alt: #191d24;
  --bg-raised: #1d222a;
  --fg: #ece9e2;
  --fg-muted: #8b93a1;
  --accent: #e8a33d;
  --accent-dim: #7a5a26;
  --border: #262b34;
  --dot: #262b34;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --nav-w: 300px;
  --header-h: 64px;

  color-scheme: dark;
}

html[data-theme="light"]{
  --bg: #f6f4ee;
  --bg-alt: #efece3;
  --bg-raised: #ffffff;
  --fg: #1c1f26;
  --fg-muted: #5b6270;
  --accent: #b8791f;
  --accent-dim: #e3c18c;
  --border: #ddd8cb;
  --dot: #ddd8cb;
  color-scheme: light;
}

*{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  transition: background .25s ease, color .25s ease;
  background-image: radial-gradient(var(--dot) 1px, transparent 1px);
  background-size: 22px 22px;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

a{ color: inherit; text-decoration: none; }

/* ---------- layout shell ---------- */

.page{
  max-width: 780px;
  margin: 0 auto;
  padding: calc(var(--header-h) + 64px) 24px 96px;
}

/* ---------- header ---------- */

.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 40;
}

.header-left{ display: flex; align-items: center; gap: 14px; }

.menu-btn{
  width: 38px; height: 38px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px;
  background: none; border: none; cursor: pointer;
  border-radius: 6px;
}
.menu-btn:hover{ background: var(--bg-alt); }
.menu-btn:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }
.menu-btn span{
  display: block; width: 18px; height: 1.5px; background: var(--fg);
  transition: transform .2s ease, opacity .2s ease;
}

.wordmark{
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--fg-muted);
  cursor: pointer;
}
.wordmark strong{ color: var(--fg); font-weight: 500; }
.wordmark .logo{ display: block; width: 10px; height: auto; }
.wordmark .logo-light{ display: none; }
html[data-theme="light"] .wordmark .logo-dark{ display: none; }
html[data-theme="light"] .wordmark .logo-light{ display: block; }

.theme-btn{
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: none; border: 1px solid var(--border); border-radius: 6px;
  cursor: pointer; color: var(--fg);
}
.theme-btn:hover{ border-color: var(--accent); }
.theme-btn:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-btn svg{ width: 17px; height: 17px; }
.theme-btn .icon-moon{ display: none; }
html[data-theme="light"] .theme-btn .icon-sun{ display: none; }
html[data-theme="light"] .theme-btn .icon-moon{ display: block; }

/* ---------- left slide-out nav ---------- */

.nav-overlay{
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  opacity: 0; pointer-events: none;
  transition: opacity .25s ease;
  z-index: 50;
}
.nav-overlay.open{ opacity: 1; pointer-events: auto; }

.side-nav{
  position: fixed; top: 0; left: 0; bottom: 0;
  width: min(var(--nav-w), 84vw);
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  transform: translateX(-100%);
  transition: transform .28s cubic-bezier(.4,0,.2,1);
  z-index: 60;
  display: flex; flex-direction: column;
  padding: 22px 0;
}
.side-nav.open{ transform: translateX(0); }

.side-nav-head{
  display: flex; align-items: center; justify-content: flex-end;
  padding: 0 22px 18px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.nav-close{
  background: none; border: none; color: var(--fg-muted);
  cursor: pointer; font-size: 20px; line-height: 1; padding: 4px;
}
.nav-close:hover{ color: var(--fg); }

.nav-index{ list-style: none; margin: 0; padding: 6px 0; flex: 1; }
.nav-index li{ border-bottom: 1px dashed var(--border); }
.nav-index a{
  display: flex; align-items: baseline;
  padding: 14px 22px;
  font-family: var(--font-display);
  font-size: 19px;
  transition: padding-left .18s ease, color .18s ease;
}
.nav-index a:hover{ padding-left: 28px; color: var(--accent); }
.nav-index a[aria-current="page"]{ color: var(--accent); }

.side-nav-foot{
  padding: 18px 22px 4px;
  border-top: 1px solid var(--border);
}
.side-nav-foot .label{
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em;
  color: var(--fg-muted); text-transform: uppercase; display: block; margin-bottom: 12px;
}
.social-row{ display: flex; gap: 10px; }
.social-row a{
  width: 36px; height: 36px; border: 1px solid var(--border); border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: var(--fg-muted);
  transition: color .18s ease, border-color .18s ease;
}
.social-row a:hover{ color: var(--accent); border-color: var(--accent); }
.social-row svg{ width: 16px; height: 16px; }

/* ---------- hero (home) ---------- */

.hero{ padding-top: 8px; }
.hero .eyebrow{
  font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em;
  color: var(--accent); text-transform: uppercase; display: block; margin-bottom: 18px;
}
.hero h1{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  line-height: 1.12;
  margin: 0 0 20px;
}
.hero h1 em{ font-style: italic; color: var(--accent); }
.hero p.lede{
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 52ch;
  margin: 0 0 34px;
}
.meta-line{
  font-family: var(--font-mono); font-size: 13px; color: var(--fg-muted);
  border-top: 1px dashed var(--border);
  padding-top: 16px; margin-bottom: 48px;
}

/* section links from home */
.section-grid{ display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }
@media (max-width: 560px){ .section-grid{ grid-template-columns: 1fr; } }
.section-card{
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
  background: var(--bg-raised);
  transition: border-color .18s ease, transform .18s ease;
  display: block;
}
.section-card:hover{ border-color: var(--accent); transform: translateY(-2px); }
.section-card h3{
  font-family: var(--font-display); font-weight: 500; font-size: 1.3rem; margin: 8px 0 8px;
}
.section-card p{ color: var(--fg-muted); font-size: .92rem; margin: 0; }

/* ---------- projects grid ---------- */

.page-wide{ max-width: 1080px; }

.projects-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
@media (max-width: 760px){ .projects-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px){ .projects-grid{ grid-template-columns: 1fr; } }

.project-card{
  display: block;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-raised);
  transition: border-color .18s ease, transform .18s ease;
}
.project-card:hover{ border-color: var(--accent); transform: translateY(-2px); }
.project-thumb{
  aspect-ratio: 16 / 10;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--fg-muted);
}
.project-card h3{
  font-family: var(--font-display); font-weight: 500; font-size: 1.05rem;
  margin: 14px 16px 4px;
}
.project-card p{ color: var(--fg-muted); font-size: .85rem; margin: 0 16px 16px; }

/* ---------- generic page header ---------- */

.page-head{ margin-bottom: 44px; border-bottom: 1px solid var(--border); padding-bottom: 24px; }
.page-head .idx{ font-family: var(--font-mono); font-size: 12px; color: var(--accent); display:block; margin-bottom: 10px; }
.page-head h1{ font-family: var(--font-display); font-weight: 500; font-size: clamp(1.8rem, 4vw, 2.4rem); margin: 0 0 10px; }
.page-head p{ color: var(--fg-muted); margin: 0; max-width: 56ch; }

/* ---------- empty log state ---------- */

.log-empty{
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 48px 28px;
  text-align: left;
  background: var(--bg-alt);
}
.log-empty .idx{ font-family: var(--font-mono); font-size: 12px; color: var(--accent); }
.log-empty h2{ font-family: var(--font-display); font-weight: 500; font-size: 1.4rem; margin: 14px 0 10px; }
.log-empty p{ color: var(--fg-muted); max-width: 48ch; margin: 0; }

/* ---------- blog posts ---------- */

.post-list{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 32px; }

.post{
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-raised);
  padding: 32px;
}
.post-meta{ display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.post-date{ font-family: var(--font-mono); font-size: 12px; color: var(--fg-muted); }
.post > h2{ font-family: var(--font-display); font-weight: 500; font-size: 1.6rem; margin: 0 0 22px; }

.post-body{ max-width: 68ch; }
.post-body p{ color: var(--fg); font-size: .97rem; margin: 0 0 16px; }
.post-body h3{ font-family: var(--font-display); font-weight: 500; font-size: 1.15rem; color: var(--fg); margin: 28px 0 12px; }
.post-body ul, .post-body ol{ margin: 0 0 16px; padding-left: 22px; color: var(--fg); font-size: .95rem; }
.post-body li{ margin-bottom: 8px; }
.post-body li::marker{ color: var(--accent); }
.post-body li:last-child{ margin-bottom: 0; }

/* ---------- footer ---------- */

.site-footer{
  max-width: 780px; margin: 0 auto; padding: 0 24px 40px;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-mono); font-size: 12px; color: var(--fg-muted);
}
.site-footer .social-row a{ width: 32px; height: 32px; }