/* =========================================================
   Ekrem MORALIOGLU — portfolio
   Design: "Quiet precision." Warm paper, ink, one teal signal.
   All theming lives in the :root variables below — change the
   accent in ONE place and the whole site follows.
   ========================================================= */

:root {
  --paper:       #FCFBF8;
  --paper-soft:  #F4F1EA;
  --ink:         #17171C;
  --muted:       #6C6C74;
  --line:        #E7E3DB;
  --accent:      #0E7C86;   /* teal signal */
  --accent-deep: #0A5A61;   /* darker teal for text/links (AA contrast) */

  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body:    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --maxw: 46rem;
  --gap:  clamp(2.5rem, 6vw, 4.5rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:       #121316;
    --paper-soft:  #1B1D21;
    --ink:         #ECEAE4;
    --muted:       #9A9AA2;
    --line:        #2A2C31;
    --accent:      #2DD4BF;
    --accent-deep: #5EEAD4;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- header / nav ---------- */
header { border-bottom: 1px solid var(--line); }

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  padding: 1.25rem 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.nav a:hover,
.nav a:focus-visible { color: var(--ink); border-color: var(--accent); }
.nav a[aria-current="page"] { color: var(--ink); border-color: var(--accent); }

/* spacer no longer needed — the lang switcher is pushed right with margin-left:auto,
   which (unlike a flex-grow spacer) stays clean when the nav wraps on small screens */
.nav .spacer { display: none; }

/* language switcher */
.lang { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin-left: auto; }
.lang a { text-transform: uppercase; border: none; }
.lang a[aria-current="true"] { color: var(--accent-deep); }
.lang .sep { color: var(--line); }

/* ---------- hero ---------- */
.hero { padding: var(--gap) 0 calc(var(--gap) * 0.6); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-deep);
  margin: 0 0 0.9rem;
}

h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 8vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0;
}
/* signature: accent underline tucked under the name */
h1 .mark { box-shadow: inset 0 -0.12em 0 var(--accent); }

.tagline {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--muted);
  margin: 1rem 0 0;
}
.tagline .blink {
  color: var(--accent);
  animation: blink 1.2s steps(2, start) infinite;
}
@keyframes blink { to { opacity: 0; } }

/* ---------- sections ---------- */
section { padding: calc(var(--gap) * 0.55) 0; border-top: 1px solid var(--line); }
.hero { border-top: none; }

h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  margin: 0 0 1rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

p { margin: 0 0 1rem; }
a { color: var(--accent-deep); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
  color: var(--paper);
  background: var(--ink);
  padding: 0.6rem 1rem;
  border-radius: 2px;
}
.btn:hover { background: var(--accent-deep); color: #fff; }

/* ---------- project cards ---------- */
.projects { display: grid; gap: 1.25rem; margin-top: 0.5rem; }

.card {
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 1.25rem 1.4rem;
  background: var(--paper);
  transition: border-color 0.15s ease;
}
.card:hover { border-color: var(--accent); }
.card h3 { font-family: var(--font-display); font-size: 1.15rem; margin: 0 0 0.4rem; }
.card p  { color: var(--muted); margin: 0 0 0.9rem; }

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
}
.meta b { color: var(--ink); font-weight: 500; }

.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.9rem; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent-deep);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
}

/* skills + experience lists */
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; list-style: none; padding: 0; margin: 0; }
.chips li {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.25rem 0.65rem;
}

/* tech stack — grouped chips */
.stack { display: grid; gap: 1.4rem; margin-top: 0.5rem; }
.stack-group h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 500;
  margin: 0 0 0.6rem;
}

/* coverage — service cards */
.services { display: grid; gap: 1.25rem; margin-top: 0.5rem; }
@media (min-width: 36rem) { .services { grid-template-columns: 1fr 1fr; } }

.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { padding: 0.9rem 0; border-bottom: 1px solid var(--line); }
.timeline li:last-child { border-bottom: none; }
.timeline .when { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); }
.timeline .what { font-weight: 600; }

/* ---------- contact form ---------- */
.form { display: grid; gap: 1.1rem; margin-top: 0.5rem; max-width: 34rem; }
.form label { display: grid; gap: 0.35rem; }
.form label span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.form input,
.form textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.6rem 0.7rem;
  width: 100%;
  transition: border-color 0.15s ease;
}
.form textarea { resize: vertical; }
.form input:focus,
.form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent); }
.form input::placeholder,
.form textarea::placeholder { color: var(--muted); opacity: 0.7; }
.form button { justify-self: start; border: none; cursor: pointer; }
.form button[disabled] { opacity: 0.6; cursor: progress; }

.req { color: var(--accent-deep); }

/* invalid fields + inline messages */
.form input.invalid,
.form textarea.invalid { border-color: #b3261e; }
.form input.invalid:focus,
.form textarea.invalid:focus { box-shadow: 0 0 0 3px color-mix(in srgb, #b3261e 18%, transparent); }
.field-error { font-family: var(--font-mono); font-size: 0.72rem; color: #b3261e; min-height: 1em; }
.field-meta { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.char-count { font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted); white-space: nowrap; }
@media (prefers-color-scheme: dark) {
  .form input.invalid,
  .form textarea.invalid { border-color: #f2a59d; }
  .field-error { color: #f2a59d; }
}

.form-status { font-family: var(--font-mono); font-size: 0.78rem; margin: 0; min-height: 1.2em; }
.form-status.ok  { color: var(--accent-deep); }
.form-status.err { color: #b3261e; }
@media (prefers-color-scheme: dark) { .form-status.err { color: #f2a59d; } }

/* ---------- contact channels ---------- */
.channels { list-style: none; padding: 0; margin: 0.5rem 0 0; }
.channels li {
  display: flex;
  gap: 0.4rem 1rem;
  flex-wrap: wrap;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line);
}
.channels li:last-child { border-bottom: none; }
.channels .ch {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
  min-width: 5.5rem;
}
.channels a { overflow-wrap: anywhere; }   /* long URLs/emails wrap instead of overflowing */

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted);
}

/* ---------- responsive ---------- */
/* never let a long word/URL force horizontal scrolling on small screens */
body { overflow-wrap: break-word; }

@media (max-width: 40rem) {
  .wrap { padding: 0 1.15rem; }
  .nav { gap: 0.7rem 1rem; padding: 1rem 0; }
  .lang { width: 100%; margin-left: 0; padding-top: 0.2rem; }  /* drop to its own line, left-aligned */
}

@media (max-width: 34rem) {
  h2 { font-size: 1.3rem; }
  .tagline { font-size: 0.85rem; }
  .field-meta { flex-wrap: wrap; gap: 0.2rem 1rem; }
}

/* ---------- a11y + motion ---------- */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; }
}