/* ==========================================================================
   Pilot Dewei RFQ Lab — visual system
   Concept: TIME / PROGRESS / JOURNEY
   Clean white, warm wood accents, premium international B2B, modern sans serif,
   large whitespace, rounded cards, subtle borders.
   ========================================================================== */

:root {
  /* Surfaces */
  --bg: #fbfaf8;
  --surface: #ffffff;
  --surface-soft: #f6f3ee;
  --border: #e8e3da;
  --border-strong: #d7d0c5;

  /* Ink */
  --ink: #1f1c18;
  --ink-soft: #4b463f;
  --ink-faint: #857d72;

  /* Warm wood accents */
  --wood-900: #3a2a1a;
  --wood-700: #6b4f32;
  --wood-600: #8a6a45;
  --wood-500: #a98a5f;
  --wood-300: #cbb48f;
  --wood-100: #efe6d6;

  /* Status (used with text labels, never color-only) */
  --status-done: #3e6b4f;
  --status-done-bg: #edf4ee;
  --status-active: #a9782f;
  --status-active-bg: #f7efe0;
  --status-pending: #857d72;
  --status-pending-bg: #f1efe9;
  --status-complex: #87453a;
  --status-complex-bg: #f7e9e6;

  /* Shape */
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;

  /* Type */
  --font-sans: "Inter", "Helvetica Neue", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --shadow-sm: 0 1px 2px rgba(31, 28, 24, 0.04), 0 1px 3px rgba(31, 28, 24, 0.05);
  --shadow-md: 0 8px 24px rgba(31, 28, 24, 0.07);

  --content-max: 1160px;
  --measure: 68ch;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--wood-700); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

/* ---------- Layout helpers ---------- */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 64px 0; }
.section--tight { padding: 32px 0; }

.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--wood-600);
  margin-bottom: 12px;
}

.lede {
  font-size: 1.125rem;
  color: var(--ink-soft);
  max-width: var(--measure);
}

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 248, 0.9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}

.topbar__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 650;
  font-size: 1.02rem;
  color: var(--ink);
  letter-spacing: -0.01em;
  text-decoration: none;
}
.brand:hover { text-decoration: none; }

.brand__mark {
  width: 30px; height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--wood-600), var(--wood-900));
  display: grid; place-items: center;
  color: #fff; font-size: 0.8rem; font-weight: 700;
  flex: none;
}

.brand__sub {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-top: 1px;
}

.topnav {
  margin-left: auto;
  display: flex;
  gap: 4px;
  align-items: center;
}
.topnav a {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}
.topnav a:hover { background: var(--surface-soft); color: var(--ink); text-decoration: none; }
.topnav a[aria-current="page"] { color: var(--wood-900); font-weight: 600; }

.badge-preview {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wood-700);
  background: var(--wood-100);
  border: 1px solid var(--wood-300);
  padding: 3px 9px;
  border-radius: 999px;
  white-space: nowrap;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: inherit;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn:hover { text-decoration: none; }
.btn:focus-visible {
  outline: 2px solid var(--wood-600);
  outline-offset: 2px;
}

.btn--primary { background: var(--wood-900); color: #fff; }
.btn--primary:hover { background: var(--wood-700); }

.btn--ghost {
  background: transparent;
  color: var(--wood-900);
  border-color: var(--border-strong);
}
.btn--ghost:hover { background: var(--surface-soft); border-color: var(--wood-300); }

.btn--lg { padding: 14px 26px; font-size: 1rem; }
.btn--sm { padding: 8px 14px; font-size: 0.84rem; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(201, 180, 143, 0.18), transparent 60%),
    var(--surface);
  border-bottom: 1px solid var(--border);
}
.hero__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 72px 24px 64px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.1rem, 4.6vw, 3.3rem);
  letter-spacing: -0.025em;
  margin-bottom: 18px;
}
.hero__lede { font-size: 1.18rem; color: var(--ink-soft); max-width: 40ch; }
.hero__actions { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }

.hero__media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  box-shadow: var(--shadow-md);
}
.hero__media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }
.hero__media figcaption, .image-caption {
  position: absolute;
  left: 12px; bottom: 12px; right: 12px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(4px);
  border-radius: 8px;
  padding: 7px 11px;
  font-size: 0.76rem;
  color: var(--ink-soft);
}

/* ---------- Cards ---------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-sm);
}

.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 880px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--2 { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid--4, .grid--3 { grid-template-columns: 1fr; }
}

/* ---------- KPI ---------- */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
}
.kpi__value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--wood-900);
  line-height: 1;
}
.kpi__label {
  font-size: 0.82rem;
  color: var(--ink-faint);
  margin-top: 8px;
  font-weight: 500;
}
.kpi__note { font-size: 0.74rem; color: var(--ink-faint); margin-top: 4px; }

@media (max-width: 720px) {
  .kpis { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Timeline (progress) ---------- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.timeline__step {
  position: relative;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 16px;
  padding: 0 0 22px;
}
.timeline__step:last-child { padding-bottom: 0; }

.timeline__rail {
  position: relative;
  width: 34px;
  display: flex;
  justify-content: center;
}
.timeline__rail::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: var(--border-strong);
}
.timeline__step:first-child .timeline__rail::before { top: 50%; }
.timeline__step:last-child .timeline__rail::before { bottom: 50%; }

.timeline__dot {
  position: relative;
  z-index: 1;
  width: 15px; height: 15px;
  border-radius: 50%;
  margin-top: 5px;
  border: 2.5px solid var(--border-strong);
  background: var(--surface);
}
.timeline__step--done .timeline__dot { background: var(--status-done); border-color: var(--status-done); }
.timeline__step--active .timeline__dot { background: var(--status-active); border-color: var(--status-active); box-shadow: 0 0 0 4px var(--status-active-bg); }

.timeline__body { padding-top: 1px; }
.timeline__title { font-weight: 600; color: var(--ink); }
.timeline__desc { font-size: 0.88rem; color: var(--ink-faint); margin-top: 2px; }

/* Status pills */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.74rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill--done { color: var(--status-done); background: var(--status-done-bg); }
.pill--active { color: var(--status-active); background: var(--status-active-bg); }
.pill--pending { color: var(--status-pending); background: var(--status-pending-bg); }
.pill--complex { color: var(--status-complex); background: var(--status-complex-bg); }

/* ---------- Project card ---------- */
.project-card {
  display: flex;
  flex-direction: column;
}
.project-card__meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.project-card__title { font-size: 1.35rem; margin-bottom: 10px; }
.project-card__title a { color: var(--ink); }
.project-card__title a:hover { color: var(--wood-700); }
.project-card__summary { color: var(--ink-soft); font-size: 0.95rem; }

.mini-timeline { display: flex; align-items: stretch; gap: 6px; margin-top: 20px; }
.mini-timeline__seg { flex: 1; height: 6px; border-radius: 999px; background: var(--border); }
.mini-timeline__seg--done { background: var(--status-done); }
.mini-timeline__seg--active { background: var(--status-active); }
.mini-timeline__caption { font-size: 0.76rem; color: var(--ink-faint); margin-top: 10px; }

/* ---------- Search / filter bar ---------- */
.controls {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 26px;
}
.search {
  flex: 1 1 280px;
  position: relative;
}
.search input {
  width: 100%;
  font-family: inherit;
  font-size: 0.95rem;
  padding: 12px 16px 12px 42px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
}
.search input:focus-visible { outline: 2px solid var(--wood-600); outline-offset: 2px; }
.search__icon {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  color: var(--ink-faint); pointer-events: none;
  font-size: 1rem;
}

.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 550;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink-soft);
  cursor: pointer;
}
.chip:hover { border-color: var(--wood-300); }
.chip[aria-pressed="true"] { background: var(--wood-900); color: #fff; border-color: var(--wood-900); }
.chip:focus-visible { outline: 2px solid var(--wood-600); outline-offset: 2px; }

/* Category grid */
.category-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.category-card:hover { border-color: var(--wood-300); box-shadow: var(--shadow-md); text-decoration: none; }
.category-card__name { font-weight: 600; font-size: 1.05rem; }
.category-card__hint { font-size: 0.84rem; color: var(--ink-faint); }

/* ---------- Detail page ---------- */
.detail-head {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.detail-head__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 40px 24px;
}
.breadcrumb { font-size: 0.82rem; color: var(--ink-faint); margin-bottom: 16px; }
.breadcrumb a { color: var(--ink-faint); }
.breadcrumb a:hover { color: var(--wood-700); }

.detail-title { font-size: clamp(1.7rem, 3.4vw, 2.5rem); letter-spacing: -0.02em; max-width: 24ch; }

.detail-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

.preview-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 36px;
  align-items: start;
}

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; gap: 32px; }
  .preview-grid { grid-template-columns: 1fr; }
}

.figure {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface-soft);
}
.figure img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }

.spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.spec {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}
.spec__label { font-size: 0.72rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.06em; font-weight: 600; }
.spec__value { font-size: 1.08rem; font-weight: 600; color: var(--ink); margin-top: 4px; }

/* Collapsible sections */
.collapse { border-bottom: 1px solid var(--border); }
.collapse__head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  color: var(--ink);
}
.collapse__head h3 { margin: 0; font-size: 1.12rem; }
.collapse__toggle {
  flex: none;
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 50%;
  color: var(--ink-faint);
  transition: transform 0.2s ease, background 0.2s ease;
}
.collapse__head[aria-expanded="true"] .collapse__toggle { transform: rotate(45deg); background: var(--surface-soft); }
.collapse__head:focus-visible { outline: 2px solid var(--wood-600); outline-offset: 2px; }
.collapse__body { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.collapse__body-inner { padding: 0 4px 24px; color: var(--ink-soft); }

/* Fact list */
.fact-list { list-style: none; margin: 0; padding: 0; }
.fact-list li {
  position: relative;
  padding: 10px 0 10px 28px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.fact-list li:last-child { border-bottom: none; }
.fact-list li::before {
  content: "";
  position: absolute; left: 4px; top: 18px;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--wood-500);
}

/* History log */
.history-log { list-style: none; margin: 0; padding: 0; }
.history-log li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.history-log li:last-child { border-bottom: none; }
.history-log__date { font-variant-numeric: tabular-nums; font-size: 0.86rem; color: var(--wood-700); font-weight: 600; }
.history-log__text { font-size: 0.95rem; color: var(--ink-soft); }
@media (max-width: 560px) {
  .history-log li { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- Updates strip ---------- */
.updates { display: flex; flex-direction: column; }
.update {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 20px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--border);
}
.update:last-child { border-bottom: none; }
.update__date { font-variant-numeric: tabular-nums; font-size: 0.88rem; color: var(--wood-700); font-weight: 600; }
.update__text { color: var(--ink-soft); }
.update__title { font-weight: 600; color: var(--ink); }
@media (max-width: 560px) {
  .update { grid-template-columns: 1fr; gap: 4px; }
}

/* ---------- Forms ---------- */
.form-card { max-width: 760px; }
.field { margin-bottom: 22px; }
.field label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 7px;
}
.field .req { color: var(--status-complex); }
.field .hint { font-size: 0.8rem; color: var(--ink-faint); margin-top: 5px; }
.field input[type="text"],
.field input[type="email"],
.field input[type="tel"],
.field select,
.field textarea {
  width: 100%;
  font-family: inherit;
  font-size: 0.95rem;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--ink);
}
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible { outline: 2px solid var(--wood-600); outline-offset: 2px; border-color: var(--wood-500); }
.field textarea { resize: vertical; min-height: 120px; }

.field--2col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .field--2col { grid-template-columns: 1fr; } }

.filepicker {
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
  background: var(--surface-soft);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.filepicker:hover { border-color: var(--wood-500); }
.filepicker.has-files { border-style: solid; }
.filepicker input[type="file"] { display: none; }
.filepicker__label { font-weight: 600; color: var(--wood-900); }
.filepicker__meta { font-size: 0.82rem; color: var(--ink-faint); margin-top: 6px; }
.filepicker__list { list-style: none; margin: 12px 0 0; padding: 0; text-align: left; }
.filepicker__list li {
  display: flex; justify-content: space-between; gap: 10px;
  font-size: 0.84rem; color: var(--ink-soft);
  padding: 6px 0; border-bottom: 1px solid var(--border);
}
.filepicker__err { color: var(--status-complex); font-size: 0.82rem; margin-top: 8px; font-weight: 600; }

.notice {
  border-radius: var(--radius-md);
  padding: 16px 18px;
  font-size: 0.9rem;
  margin-bottom: 22px;
}
.notice--staging { background: var(--status-active-bg); border: 1px solid var(--wood-300); color: var(--wood-900); }
.notice--info { background: var(--surface-soft); border: 1px solid var(--border); color: var(--ink-soft); }

/* ---------- Responsive nav ---------- */
[data-nav-toggle] { display: none; }
@media (max-width: 760px) {
  [data-nav-toggle] { display: inline-flex; margin-left: auto; }
  .topnav {
    margin-left: 0;
    flex-basis: 100%;
    flex-direction: column;
    align-items: stretch;
    display: none;
    padding-top: 4px;
  }
  .topnav.is-open {
    display: flex;
  }
  .topnav a {
    padding: 11px 12px;
    border-radius: var(--radius-sm);
  }
  .topbar__inner { flex-wrap: wrap; }
  .badge-preview { display: none; }
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  margin-top: 40px;
}
.footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 40px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  align-items: center;
}
.footer__note { font-size: 0.82rem; color: var(--ink-faint); max-width: 60ch; }
.footer__links { display: flex; gap: 18px; flex-wrap: wrap; }
.footer__links a { font-size: 0.84rem; color: var(--ink-soft); }

/* ---------- Accessibility ---------- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
:focus-visible { outline: 2px solid var(--wood-600); outline-offset: 2px; }
.skip-link {
  position: absolute; left: -9999px; top: 8px;
  background: var(--wood-900); color: #fff;
  padding: 10px 16px; border-radius: var(--radius-sm);
  z-index: 100;
}
.skip-link:focus { left: 8px; }

/* ---------- Admin shell (not publicly linked) ---------- */
.admin-shell {
  border: 1px dashed var(--border-strong);
  background: repeating-linear-gradient(45deg, var(--surface), var(--surface) 12px, var(--surface-soft) 12px, var(--surface-soft) 24px);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .collapse__body { transition: none; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}