/* ===========================================================================
   orhanaydogdu.com.tr — "Engineer's instrument panel"
   Display: Space Grotesk · Body: Inter · Data: JetBrains Mono
   =========================================================================== */

:root {
  --ink:        #0E141B;
  --ink-2:      #121B24;
  --panel:      #17222E;
  --panel-2:    #1C2937;
  --line:       #26333F;
  --line-soft:  #1E2A35;
  --text:       #E8EDF2;
  --text-2:     #C2CCD6;
  --muted:      #8E9CAB;
  --amber:      #F5B544;
  --amber-2:    #E08A2B;
  --sky:        #7FC3EC;
  --good:       #5BD6A0;

  --maxw: 900px;
  --side: 316px;
  --r: 14px;
  --ease: cubic-bezier(.22, .61, .36, 1);

  font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Atmosphere: soft signal glows + faint blueprint grid (architecture nod) */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(1100px 720px at 80% -10%, rgba(245,181,68,.10), transparent 60%),
    radial-gradient(900px 620px at -12% 112%, rgba(127,195,236,.06), transparent 55%),
    var(--ink);
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(circle at 50% 28%, #000 55%, transparent 100%);
          mask-image: radial-gradient(circle at 50% 28%, #000 55%, transparent 100%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

::selection { background: rgba(245,181,68,.28); color: #fff; }

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}

.mono { font-family: "JetBrains Mono", ui-monospace, Menlo, monospace; }

/* ---------------------------------------------------------------- eyebrow */
.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: .72rem;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--amber);
  display: inline-flex;
  align-items: center;
  gap: .7em;
  margin: 0;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--amber);
  display: inline-block;
}

/* =============================================================== SIDEBAR */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--side);
  padding: 34px 26px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-right: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
  overflow-y: auto;
  z-index: 50;
}

.side-top {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand img {
  width: 56px; height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 4px rgba(245,181,68,.10);
  flex: none;
}
.brand .name {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 1.06rem;
  line-height: 1.15;
  letter-spacing: -.01em;
}
.brand .role {
  font-family: "JetBrains Mono", monospace;
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* nav */
.side-nav { display: flex; flex-direction: column; gap: 2px; }
.side-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-radius: 9px;
  color: var(--muted);
  font-size: .92rem;
  font-weight: 500;
  transition: color .18s var(--ease), background .18s var(--ease);
}
.side-nav a .idx {
  font-family: "JetBrains Mono", monospace;
  font-size: .68rem;
  color: var(--line);
  transition: color .18s var(--ease);
}
.side-nav a:hover { color: var(--text); background: var(--panel); }
.side-nav a.active { color: var(--text); background: var(--panel); }
.side-nav a.active .idx { color: var(--amber); }

.side-label {
  font-family: "JetBrains Mono", monospace;
  font-size: .64rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
  opacity: .7;
  margin: 4px 0 2px 12px;
}

/* contact links in sidebar */
.side-contact { display: flex; flex-direction: column; gap: 1px; }
.side-contact a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 9px;
  color: var(--text-2);
  font-size: .86rem;
  transition: color .18s var(--ease), background .18s var(--ease);
  word-break: break-all;
}
.side-contact a i { color: var(--amber); width: 18px; text-align: center; flex: none; }
.side-contact a:hover { color: var(--amber); background: var(--panel); }

.side-cv {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .6em;
  padding: 12px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  color: #1a1206;
  font-weight: 700;
  font-size: .9rem;
  transition: transform .2s var(--ease), filter .2s var(--ease);
}
.side-cv:hover { transform: translateY(-2px); filter: brightness(1.05); }

.side-foot {
  margin-top: auto;
  font-family: "JetBrains Mono", monospace;
  font-size: .66rem;
  color: var(--muted);
  opacity: .65;
  line-height: 1.6;
}

/* ================================================================== MAIN */
.main { margin-left: var(--side); }

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 100px 56px;
  border-top: 1px solid var(--line-soft);
}
.section:first-child { border-top: 0; }

.section-head { margin-bottom: 44px; }
.section-head h2 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -.025em;
  margin: 12px 0 0;
}

/* ---------------------------------------------------------------- HERO */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 110px 56px 90px;
}
.hero .eyebrow { font-size: .78rem; }
.hero h1 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 4.6rem);
  line-height: 1.03;
  letter-spacing: -.035em;
  margin: 22px 0 0;
  max-width: 16ch;
}
.hero h1 .accent {
  background: linear-gradient(120deg, var(--amber), var(--amber-2));
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero .lead {
  margin: 26px 0 0;
  font-size: 1.16rem;
  color: var(--text-2);
  max-width: 52ch;
}

.status {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  margin-top: 38px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.status .stat { display: flex; flex-direction: column; gap: 3px; }
.status .stat .v {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--text);
}
.status .stat .v .star { color: var(--amber); }
.status .stat .k {
  font-family: "JetBrains Mono", monospace;
  font-size: .66rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  padding: .85em 1.35em;
  border-radius: 11px;
  font-weight: 600;
  font-size: .92rem;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--panel);
  cursor: pointer;
  transition: transform .2s var(--ease), border-color .2s var(--ease),
              color .2s var(--ease), filter .2s var(--ease);
}
.btn i { font-size: 1.05em; }
.btn-primary {
  background: linear-gradient(135deg, var(--amber), var(--amber-2));
  color: #1a1206;
  border-color: transparent;
}
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-ghost:hover { transform: translateY(-2px); border-color: var(--amber); color: var(--amber); }

/* ---------------------------------------------------------------- ABOUT */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  align-items: start;
}
.about-body p { margin: 0 0 18px; color: var(--text-2); }
.about-body p:last-child { margin-bottom: 0; }
.about-body strong { color: var(--text); font-weight: 600; }

.facts {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, var(--panel), var(--ink-2));
  padding: 8px 22px;
}
.fact { padding: 16px 0; border-top: 1px solid var(--line-soft); }
.fact:first-child { border-top: 0; }
.fact .k {
  font-family: "JetBrains Mono", monospace;
  font-size: .64rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 5px;
}
.fact .v { font-size: .94rem; color: var(--text); }
.fact .v .hl { color: var(--amber); }

.callout {
  margin-top: 32px;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: 12px;
  background: linear-gradient(100deg, rgba(245,181,68,.07), var(--panel) 58%);
}
.callout .k {
  font-family: "JetBrains Mono", monospace;
  font-size: .64rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 9px;
}
.callout p { margin: 0; color: var(--text); font-size: 1.04rem; line-height: 1.6; }
.callout p strong { color: var(--amber); font-weight: 600; }

/* ----------------------------------------------------------- EXPERIENCE */
.timeline { position: relative; padding-left: 36px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 9px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--amber), var(--amber-2) 70%, transparent);
}
.tl-item { position: relative; padding-bottom: 42px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -36px; top: 4px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 5px rgba(245,181,68,.10);
}
.tl-item .date {
  font-family: "JetBrains Mono", monospace;
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--amber);
  margin-bottom: 6px;
}
.tl-item h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.28rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -.01em;
}
.tl-item .org { margin: 3px 0 12px; font-size: .95rem; color: var(--muted); }
.tl-item .org a { color: var(--sky); border-bottom: 1px solid transparent; transition: border-color .18s; }
.tl-item .org a:hover { border-color: var(--sky); }
.tl-item p { margin: 0 0 14px; color: var(--text-2); }

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-family: "JetBrains Mono", monospace;
  font-size: .72rem;
  color: var(--text-2);
  background: var(--panel-2);
  border: 1px solid var(--line);
  padding: .38em .72em;
  border-radius: 7px;
}

/* --------------------------------------------------------------- SKILLS */
.skills-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 44px; }
.skill { }
.skill .row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: "JetBrains Mono", monospace;
  font-size: .82rem;
  margin-bottom: 8px;
}
.skill .row .nm { color: var(--text); }
.skill .row .yr { color: var(--muted); }
.skill .track {
  height: 8px;
  border-radius: 6px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  overflow: hidden;
}
.skill .fill {
  height: 100%;
  width: 0;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--amber-2), var(--amber));
  transition: width 1.1s var(--ease);
}
.reveal.in .skill .fill { width: var(--w); }

.tools-label {
  font-family: "JetBrains Mono", monospace;
  font-size: .66rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 40px 0 16px;
}
.tools { display: flex; flex-wrap: wrap; gap: 9px; }

/* ------------------------------------------------------------- PROJECTS */
.proj-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: 28px;
  font-family: "JetBrains Mono", monospace;
  font-size: .82rem;
  color: var(--muted);
}
.proj-head .big { color: var(--text); }
.proj-head .big .star { color: var(--amber); }
.proj-head a { margin-left: auto; color: var(--sky); }
.proj-head a:hover { color: var(--amber); }

.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card {
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, var(--panel), var(--ink-2));
  transition: transform .22s var(--ease), border-color .22s var(--ease),
              box-shadow .22s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--amber);
  box-shadow: 0 20px 44px -24px rgba(0,0,0,.75);
}
.card .top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card .nm {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 1.08rem;
  display: inline-flex;
  align-items: center;
  gap: .5em;
}
.card .nm i { color: var(--muted); font-size: .9em; }
.card:hover .nm { color: var(--amber); }
.card .stars {
  font-family: "JetBrains Mono", monospace;
  font-size: .78rem;
  color: var(--amber);
  flex: none;
}
.card p { margin: 0; color: var(--text-2); font-size: .92rem; flex: 1; }
.card .lang {
  font-family: "JetBrains Mono", monospace;
  font-size: .7rem;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: .5em;
}
.card .lang .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--amber); }
.card .lang .dot.js { background: #f1e05a; }
.card .lang .dot.php { background: #8a91c7; }

/* ------------------------------------------------------------ EDUCATION */
.edu {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, var(--panel), var(--ink-2));
  padding: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: baseline;
}
.edu .date {
  font-family: "JetBrains Mono", monospace;
  font-size: .76rem;
  color: var(--amber);
  flex: none;
}
.edu h3 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin: 0;
}
.edu .field { color: var(--muted); font-size: .92rem; }
.edu p { flex-basis: 100%; margin: 6px 0 0; color: var(--text-2); }

/* -------------------------------------------------------------- CONTACT */
.contact-lead { color: var(--text-2); max-width: 54ch; margin: 0 0 32px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.contact-card:hover { transform: translateY(-2px); border-color: var(--amber); }
.contact-card .ico {
  width: 44px; height: 44px;
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  background: rgba(245,181,68,.12);
  color: var(--amber);
  font-size: 1.15rem;
}
.contact-card .k {
  font-family: "JetBrains Mono", monospace;
  font-size: .64rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.contact-card .v { font-size: .95rem; color: var(--text); word-break: break-all; }

.footer {
  border-top: 1px solid var(--line-soft);
  margin-top: 60px;
  padding-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: space-between;
  font-family: "JetBrains Mono", monospace;
  font-size: .72rem;
  color: var(--muted);
}

/* ------------------------------------------------------------- reveal fx */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .skill .fill { transition: none; }
}

/* ============================================================= RESPONSIVE */
@media (max-width: 980px) {
  .sidebar {
    position: sticky;
    top: 0; bottom: auto;
    width: 100%;
    height: auto;
    flex-direction: column;
    gap: 0;
    padding: 16px 20px;
    overflow: visible;
  }
  .nav-toggle { display: inline-flex; }
  .side-nav, .side-contact, .side-cv, .side-label, .side-foot {
    display: none;
  }
  .sidebar.open { gap: 6px; padding-bottom: 22px; }
  .sidebar.open .side-nav,
  .sidebar.open .side-contact,
  .sidebar.open .side-cv,
  .sidebar.open .side-label { display: flex; }
  .sidebar.open .side-nav { margin-top: 14px; }
  .sidebar.open .side-cv { margin-top: 10px; }

  .main { margin-left: 0; }
  .hero, .section { padding-left: 28px; padding-right: 28px; }
  .hero { min-height: calc(100vh - 90px); padding-top: 60px; }
}

@media (max-width: 720px) {
  .about-grid,
  .skills-grid,
  .cards,
  .contact-grid { grid-template-columns: 1fr; }
  .section { padding-top: 76px; padding-bottom: 76px; }
  .status { gap: 16px 24px; }
}