/* TDC Thai Design Consult — shared site stylesheet
   Bootstrap 5.3.x provides the layout foundation. Keep page-specific CSS small
   and add it here unless a future feature genuinely requires its own file. */

:root {
  --tdc-ink: #20211f;
  --tdc-ink-soft: #4b4d49;
  --tdc-stone: #f4f1eb;
  --tdc-stone-2: #ebe6dd;
  --tdc-paper: #fffdf9;
  --tdc-bronze: #9a7a59;
  --tdc-bronze-dark: #765c43;
  --tdc-line: rgba(32, 33, 31, .12);
  --tdc-shadow: 0 18px 45px rgba(32, 33, 31, .10);
  --tdc-radius: 1.25rem;
}

html { scroll-behavior: smooth; }
body {
  color: var(--tdc-ink);
  background: var(--tdc-paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .display-font {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: -.02em;
}

h1 { line-height: 1.05; }
h2 { line-height: 1.15; }
img { max-width: 100%; }
a { color: var(--tdc-bronze-dark); }
a:hover { color: var(--tdc-ink); }

.skip-link {
  position: absolute; left: -9999px; top: auto;
}
.skip-link:focus {
  left: 1rem; top: 1rem; z-index: 2000; background: #fff; color: #000;
  padding: .75rem 1rem; border-radius: .5rem; box-shadow: var(--tdc-shadow);
}

.site-nav {
  background: rgba(255, 253, 249, .96);
  border-bottom: 1px solid var(--tdc-line);
  backdrop-filter: blur(10px);
}
.navbar-brand { color: var(--tdc-ink) !important; }
.brand-mark {
  display: inline-grid; place-items: center; width: 2.75rem; height: 2.75rem;
  border: 1px solid var(--tdc-ink); border-radius: 50%; font-family: Georgia, serif;
  font-size: .96rem; letter-spacing: .08em; margin-right: .65rem;
}
.brand-name { font-size: .9rem; line-height: 1.05; letter-spacing: .06em; text-transform: uppercase; }
.brand-name small { display:block; color: var(--tdc-ink-soft); font-size: .62rem; letter-spacing: .11em; margin-top: .25rem; }
.nav-link { color: var(--tdc-ink) !important; font-size: .92rem; padding: .65rem .8rem !important; }
.nav-link:hover, .nav-link.active { color: var(--tdc-bronze-dark) !important; }
.navbar-toggler { border-color: var(--tdc-line); padding: .55rem .65rem; }
.navbar-toggler:focus { box-shadow: 0 0 0 .2rem rgba(154,122,89,.14); }

.btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; border-radius: 999px; padding: .75rem 1.25rem; font-weight: 600; }
.btn-tdc { background: var(--tdc-ink); border-color: var(--tdc-ink); color: #fff; }
.btn-tdc:hover { background: var(--tdc-bronze-dark); border-color: var(--tdc-bronze-dark); color: #fff; }
.btn-outline-tdc { border-color: rgba(32,33,31,.35); color: var(--tdc-ink); background: transparent; }
.btn-outline-tdc:hover { background: var(--tdc-ink); border-color: var(--tdc-ink); color: #fff; }

.eyebrow { text-transform: uppercase; letter-spacing: .16em; font-size: .72rem; font-weight: 700; color: var(--tdc-bronze-dark); }
.lead-copy { color: var(--tdc-ink-soft); font-size: clamp(1.02rem, 1.4vw, 1.18rem); }
.section-pad { padding: clamp(4.2rem, 7vw, 7rem) 0; }
.section-stone { background: var(--tdc-stone); }
.section-dark { background: var(--tdc-ink); color: #fff; }
.section-dark .lead-copy, .section-dark .text-muted { color: rgba(255,255,255,.72) !important; }
.section-title { max-width: 760px; }

.hero { padding: clamp(3.2rem, 7vw, 6.5rem) 0 3rem; overflow: hidden; }
.hero h1 { font-size: clamp(2.7rem, 6.5vw, 5.6rem); max-width: 950px; }
.hero-media { border-radius: var(--tdc-radius); overflow: hidden; box-shadow: var(--tdc-shadow); background: var(--tdc-stone); }
.hero-media img { width: 100%; height: clamp(330px, 53vw, 680px); object-fit: cover; }
.hero-note { border-left: 1px solid var(--tdc-line); padding-left: 1.25rem; color: var(--tdc-ink-soft); }

.credibility-strip { border-top: 1px solid var(--tdc-line); border-bottom: 1px solid var(--tdc-line); background: #fff; }
.credibility-item { padding: 1.3rem .6rem; }
.credibility-item strong { display: block; font-family: Georgia, serif; font-size: 1.35rem; font-weight: 400; }
.credibility-item span { color: var(--tdc-ink-soft); font-size: .84rem; }

.tdc-card { height: 100%; border: 1px solid var(--tdc-line); border-radius: var(--tdc-radius); background: rgba(255,255,255,.72); padding: 1.6rem; transition: transform .2s ease, box-shadow .2s ease; }
.tdc-card:hover { transform: translateY(-3px); box-shadow: 0 14px 32px rgba(32,33,31,.08); }
.tdc-card .number { width: 2.25rem; height: 2.25rem; border-radius: 50%; display:grid; place-items:center; background: var(--tdc-stone-2); color: var(--tdc-bronze-dark); font-weight: 700; font-size: .8rem; }
.tdc-card h3 { font-size: 1.45rem; margin-top: 1rem; }
.tdc-card p { color: var(--tdc-ink-soft); margin-bottom: 0; }

.image-panel { border-radius: var(--tdc-radius); overflow: hidden; box-shadow: var(--tdc-shadow); background: var(--tdc-stone-2); }
.image-panel img { width: 100%; height: 100%; min-height: 390px; object-fit: cover; }
.image-panel.short img { min-height: 290px; max-height: 420px; }

.process-step { position: relative; padding-left: 3.25rem; padding-bottom: 2.25rem; }
.process-step::before { content: ""; position:absolute; left: 1rem; top: 2.1rem; bottom: 0; width: 1px; background: var(--tdc-line); }
.process-step:last-child::before { display:none; }
.process-num { position:absolute; left:0; top:0; width:2rem; height:2rem; border-radius:50%; display:grid; place-items:center; border:1px solid var(--tdc-bronze); color:var(--tdc-bronze-dark); background: var(--tdc-paper); font-size:.75rem; font-weight:700; }

.metric { border-left: 1px solid var(--tdc-line); padding-left: 1.25rem; }
.metric strong { font-family: Georgia, serif; font-size: 2rem; font-weight:400; display:block; }
.metric span { color: var(--tdc-ink-soft); font-size:.88rem; }

.service-band { border-top: 1px solid var(--tdc-line); padding: 2rem 0; }
.service-band:last-child { border-bottom: 1px solid var(--tdc-line); }
.service-band h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
.service-band ul { color: var(--tdc-ink-soft); }

.project-card { border: 0; background: transparent; }
.project-card .project-image { overflow:hidden; border-radius: var(--tdc-radius); background:var(--tdc-stone); }
.project-card img { width:100%; aspect-ratio: 16/10; object-fit:cover; transition: transform .4s ease; }
.project-card:hover img { transform: scale(1.025); }
.project-meta { color: var(--tdc-bronze-dark); text-transform:uppercase; letter-spacing:.12em; font-size:.7rem; font-weight:700; }

.page-hero { padding: clamp(3rem, 7vw, 6.5rem) 0 2.5rem; }
.page-hero h1 { font-size: clamp(2.55rem, 6vw, 5rem); max-width: 940px; }
.page-hero .lead-copy { max-width: 760px; }

.quote-panel { padding: clamp(2rem, 5vw, 4rem); border-radius: var(--tdc-radius); background: var(--tdc-ink); color:#fff; }
.quote-panel p { font-family: Georgia, serif; font-size: clamp(1.6rem, 3vw, 2.45rem); line-height:1.35; margin:0; }

.contact-card { border: 1px solid var(--tdc-line); border-radius: var(--tdc-radius); padding: clamp(1.4rem, 4vw, 2.2rem); background:#fff; }
.form-control, .form-select { min-height: 50px; border-radius: .75rem; border-color: rgba(32,33,31,.18); padding: .72rem .9rem; }
textarea.form-control { min-height: 150px; }
.form-control:focus, .form-select:focus { border-color: var(--tdc-bronze); box-shadow: 0 0 0 .2rem rgba(154,122,89,.12); }
.form-label { font-weight: 600; font-size: .88rem; }
.form-hp { position:absolute !important; left:-10000px !important; width:1px !important; height:1px !important; overflow:hidden !important; }

.notice-box { border: 1px solid var(--tdc-line); border-radius: 1rem; background: var(--tdc-stone); padding: 1rem 1.15rem; color: var(--tdc-ink-soft); font-size:.9rem; }

footer { background: #191a18; color: rgba(255,255,255,.8); padding: 4rem 0 2rem; }
footer a { color: rgba(255,255,255,.8); text-decoration: none; }
footer a:hover { color:#fff; }
.footer-title { color:#fff; font-family:Georgia,serif; font-size:1.35rem; }
.footer-rule { border-color: rgba(255,255,255,.12); }

.mobile-contact-bar { display:none; }

@media (max-width: 991.98px) {
  .navbar-collapse { padding: .85rem 0 1rem; }
  .nav-cta { margin-top: .5rem; width:100%; }
  .hero { padding-top: 2.2rem; }
  .hero-media img { min-height: 360px; }
  .metric { border-left:0; border-top:1px solid var(--tdc-line); padding:1rem 0 0; }
}

@media (max-width: 767.98px) {
  body { padding-bottom: 68px; }
  .section-pad { padding: 4rem 0; }
  .hero h1, .page-hero h1 { letter-spacing:-.035em; }
  .credibility-item { border-bottom: 1px solid var(--tdc-line); }
  .credibility-item:last-child { border-bottom:0; }
  .image-panel img { min-height: 320px; }
  .mobile-contact-bar {
    position: fixed; z-index: 1040; left:0; right:0; bottom:0; display:grid; grid-template-columns: 1fr 1fr;
    background:rgba(255,253,249,.98); border-top:1px solid var(--tdc-line); backdrop-filter: blur(10px);
  }
  .mobile-contact-bar a { min-height:60px; display:flex; align-items:center; justify-content:center; text-decoration:none; font-weight:700; font-size:.86rem; color:var(--tdc-ink); }
  .mobile-contact-bar a + a { border-left:1px solid var(--tdc-line); background:var(--tdc-ink); color:#fff; }
}

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