/* ==========================================================================
   Serhatcan Yildirim — Portfolio
   Editorial theme: serif display, warm paper palette, typographic index
   ========================================================================== */

:root {
  --bg:     #f3f1e7;
  --paper:  #fbfaf4;
  --ink:    #1c1b17;
  --muted:  #6f6e65;
  --line:   #e4e2d6;
  --accent: #2f6b47;
  --accent-dark: #25573b;
  --gold:   #d1a03f;

  --serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --sans:  'Hanken Grotesk', system-ui, -apple-system, sans-serif;

  /* Fluid horizontal padding for the full-bleed sections */
  --pad: clamp(20px, 6vw, 112px);
  --section-y: clamp(44px, 7vw, 60px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body { margin: 0; }

body {
  background: var(--bg);
  font-family: var(--sans);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding: 0;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); }

input, textarea, button, select { font-family: inherit; }
input::placeholder, textarea::placeholder { color: #a3a298; }
::selection { background: var(--accent); color: #fff; }

img { max-width: 100%; display: block; }

h1, h2, h3, p { margin: 0; }
h1, h2, h3, .about-lead { overflow-wrap: break-word; }

.serif { font-family: var(--serif); font-weight: 400; }

/* --------------------------------------------------------------------------
   Page shell — full-bleed, edge to edge
   -------------------------------------------------------------------------- */
.card {
  width: 100%;
  min-height: 100vh;
  background: var(--bg);
  overflow-x: clip;
}

.eyebrow {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(32px, 5vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px var(--pad);
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 22px;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.brand .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}

.nav-links {
  display: flex;
  gap: 30px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
}
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--ink); }

/* Language toggle */
.lang {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: rgba(0, 0, 0, .03);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
}
.lang button {
  border: none;
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  transition: background .18s ease, color .18s ease;
}
.lang button[aria-pressed="true"] {
  background: var(--ink);
  color: #fff;
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero { padding: clamp(40px, 6vw, 64px) var(--pad) 60px; }

.rating {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.stars { color: var(--gold); letter-spacing: 2px; font-size: 13px; }
.rating-label {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(42px, 8vw, 84px);
  line-height: 1.01;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
  max-width: 920px;
}
.hero h1 .accent { color: var(--accent); font-style: italic; }

.hero-sub {
  font-size: clamp(17px, 2.2vw, 19px);
  line-height: 1.6;
  color: var(--muted);
  max-width: 520px;
  margin: 0 0 34px;
}

.hero-cta {
  display: flex;
  gap: 28px;
  align-items: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: #fff;
  padding: 15px 26px;
  border-radius: 2px;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background .18s ease;
}
.btn-primary:hover { background: #000; color: #fff; }
.btn-primary .arrow { text-transform: none; }

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1.5px solid var(--ink);
  padding-bottom: 3px;
}
.btn-text:hover { color: var(--ink); }
.btn-text .ico { color: var(--accent); display: inline-flex; }

/* Stats */
.stats {
  display: flex;
  max-width: 760px;
  margin-top: 58px;
  border-top: 1px solid var(--line);
  padding-top: 28px;
  gap: 32px;
}
.stat { flex: 1; }
.stat + .stat {
  border-left: 1px solid var(--line);
  padding-left: 32px;
}
.stat-num {
  font-family: var(--serif);
  font-size: clamp(30px, 4.5vw, 38px);
  line-height: 1;
  letter-spacing: -0.01em;
}
.stat-label {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.4;
  margin-top: 8px;
}

/* --------------------------------------------------------------------------
   Generic section
   -------------------------------------------------------------------------- */
.section { padding: var(--section-y) var(--pad); }
.section--paper {
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* Services — typographic index */
.services-list {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}
.service-row {
  display: grid;
  grid-template-columns: 52px 1fr 1.25fr 30px;
  gap: 28px;
  align-items: baseline;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.service-no {
  font-size: 14px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.service-t {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(22px, 3vw, 27px);
  line-height: 1.12;
  margin: 0;
}
.service-d {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}
.service-arrow { color: var(--accent); font-size: 18px; text-align: right; }

.foot-note {
  font-size: 13.5px;
  color: var(--muted);
  margin: 22px 0 0;
}
.section-sub {
  font-size: clamp(15px, 2vw, 16.5px);
  color: var(--muted);
  line-height: 1.55;
  margin: 0 0 22px;
  max-width: 480px;
}

/* Work — project cards */
.projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 22px;
}
.project {
  display: flex;
  align-items: center;
  gap: 13px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 15px 16px;
  color: var(--ink);
  transition: border-color .18s ease, background .18s ease;
}
.project:hover { border-color: #c9c7ba; background: #fff; color: var(--ink); }
.project-mono {
  width: 34px; height: 34px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  flex: 0 0 auto;
}
.project-logo {
  padding: 4px;
  overflow: hidden;
}
.project-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}
.project-body { flex: 1; min-width: 0; }
.project-name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
}
.project-tag {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 2px;
}
.project-ext { color: var(--muted); font-size: 15px; }

/* Reviews */
.reviews {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.review {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
}
.review-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.review-head .stars { font-size: 15px; }
.review-badge {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  border: 1px solid var(--line);
  width: 24px; height: 24px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}
.review-q { font-size: 16px; line-height: 1.5; margin: 14px 0 16px; }
.review-a { font-size: 13px; color: var(--muted); }

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 44px;
  margin-top: 8px;
}
.step {
  border-top: 1px solid var(--line);
  padding-top: 22px;
}
.step-n {
  font-family: var(--serif);
  font-size: 44px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}
.step-t {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 23px;
  line-height: 1.15;
  margin: 0 0 8px;
}
.step-d { font-size: 14.5px; color: var(--muted); line-height: 1.55; margin: 0; }

.section-title--mb { margin-bottom: 32px; }

/* About */
.about-lead {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(28px, 4.2vw, 40px);
  line-height: 1.25;
  letter-spacing: -0.005em;
  max-width: 920px;
  margin: 0;
}
.about-body {
  font-size: 17px;
  color: var(--muted);
  line-height: 1.6;
  max-width: 560px;
  margin: 22px 0 0;
}
.about-eyebrow { margin-bottom: 18px; }

/* --------------------------------------------------------------------------
   Contact
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
  align-items: start;
}
.contact-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 48px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
.contact-sub {
  font-size: 16px;
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
  max-width: 320px;
}
.checks {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14.5px;
}
.check-mark {
  color: var(--accent);
  font-weight: 700;
  line-height: 1.5;
  flex: 0 0 auto;
}
.check span { line-height: 1.5; }

.contact-links {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 14px;
}
.contact-links .wa {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--accent);
  font-weight: 600;
}
.contact-links a.muted { color: var(--muted); }
.contact-links a.muted:hover { color: var(--accent); }

/* Form */
.form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px 28px;
}
.field { display: flex; flex-direction: column; }
.field--full { grid-column: 1 / -1; }
.field label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 5px;
}
.field input,
.field textarea {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  padding: 9px 2px;
  font-size: 15px;
  color: var(--ink);
  outline: none;
  background: transparent;
  transition: border-color .18s ease;
}
.field textarea { resize: vertical; line-height: 1.5; min-height: 72px; }
.field input:focus,
.field textarea:focus { border-bottom-color: var(--accent); }

.form-submit {
  grid-column: 1 / -1;
  width: 100%;
  background: var(--ink);
  color: #fff;
  border: none;
  border-radius: 2px;
  padding: 15px;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin-top: 6px;
  transition: background .18s ease;
}
.form-submit:hover { background: #000; }
.form-submit .arrow { text-transform: none; }

.form-foot {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}

.form-submit:disabled { opacity: .6; cursor: default; background: var(--ink); }

.form-error {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 13px;
  color: #a2412f;
  background: rgba(162, 65, 47, .07);
  border: 1px solid rgba(162, 65, 47, .2);
  border-radius: 10px;
  padding: 10px 14px;
}

/* Sent confirmation */
.form-sent {
  padding: 44px 10px;
  text-align: center;
  border-top: 1px solid var(--line);
}
.form-sent .mark {
  font-family: var(--serif);
  font-size: 40px;
  color: var(--accent);
  margin-bottom: 8px;
}
.form-sent h3 {
  font-family: var(--serif);
  font-weight: 400;
  margin: 0 0 6px;
  font-size: 26px;
}
.form-sent p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: 30px var(--pad);
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer .brand { font-size: 19px; }
.footer-tagline { font-size: 13px; color: var(--muted); margin-top: 3px; }
.socials { display: flex; gap: 16px; align-items: center; }
.socials a { color: var(--muted); display: inline-flex; }
.socials a:hover { color: var(--accent); }
.copyright {
  padding: 0 var(--pad) 28px;
  font-size: 12px;
  color: var(--muted);
}

/* Icon sizing */
.icon { width: 18px; height: 18px; display: inline-block; }
.icon--sm { width: 16px; height: 16px; }
.service-icon { width: 17px; height: 17px; color: var(--accent); display: inline-flex; }

/* --------------------------------------------------------------------------
   Scroll reveal (progressive enhancement)
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: 1fr; gap: 28px; }
  .projects { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .nav { justify-content: space-between; }
  .nav-links { order: 3; width: 100%; justify-content: flex-start; gap: 22px; }
  .service-row {
    grid-template-columns: 40px 1fr;
    gap: 6px 16px;
    row-gap: 6px;
  }
  .service-t { grid-column: 2; }
  .service-d { grid-column: 2; }
  .service-arrow { display: none; }
  .projects { grid-template-columns: 1fr; }
  .reviews { grid-template-columns: 1fr; }
  .form { grid-template-columns: 1fr; }
  .stats { flex-direction: column; gap: 0; }
  .stat { padding: 18px 0; border-top: 1px solid var(--line); }
  .stat:first-child { padding-top: 0; border-top: none; }
  .stat + .stat { border-left: none; padding-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { scroll-behavior: auto !important; }
}