/* ==========================================================================
   PLM-IQ front-end styling — single source of truth for all UI pages.
   Structure: tokens -> reset -> layout -> components (topbar, hero, cards,
   404) -> edition accents -> responsive.
   ========================================================================== */

:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --ink: #16232e;
  --ink-soft: #55677a;
  --ink-faint: #8aa0b4;
  --line: #dde5ec;
  --accent: #0e6e6e;
  --accent-ink: #ffffff;
  --accent-soft: #e2f1f1;
  --danger: #b3392f;
  --radius: 10px;
  --shadow: 0 1px 2px rgb(22 35 46 / 6%), 0 8px 24px rgb(22 35 46 / 7%);
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
}

body.edition-discrete { --accent: #155a9c; --accent-soft: #e3edf7; }
body.edition-process { --accent: #6d4a9e; --accent-soft: #efe9f8; }
body.edition-food { --accent: #1f7a3f; --accent-soft: #e4f3ea; }
body.edition-none { --accent: #44586b; --accent-soft: #eaeff3; }

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.55;
}

code {
  background: var(--accent-soft);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  font-size: 0.92em;
}

/* ── Topbar ─────────────────────────────────────────────────────────────── */

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.65rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 1.05rem;
  color: var(--ink);
}

.edition-badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
}

.topnav {
  margin-left: auto;
  display: flex;
  gap: 1.1rem;
}

.topnav-item {
  color: var(--ink-faint);
  font-size: 0.9rem;
  cursor: not-allowed;
}

.tenant-chip {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 0.28rem 0.75rem;
  border-radius: 999px;
  max-width: 16ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.topnav + .tenant-chip { margin-left: 0; }

/* ── Page frame ─────────────────────────────────────────────────────────── */

.page {
  flex: 1;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3.5rem;
}

/* ── Hero ───────────────────────────────────────────────────────────────── */

.hero {
  background: linear-gradient(135deg, var(--surface) 0%, var(--accent-soft) 100%);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.6);
  box-shadow: var(--shadow);
  padding: 3rem 2.5rem;
  text-align: center;
}

.hero-eyebrow {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.hero-title {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.1;
  word-break: break-word;
}

.hero-sub {
  margin: 0.9rem auto 0;
  max-width: 56ch;
  color: var(--ink-soft);
}

.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Buttons ────────────────────────────────────────────────────────────── */

.btn {
  font: inherit;
  font-weight: 600;
  border-radius: var(--radius);
  padding: 0.55rem 1.3rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover { filter: brightness(1.07); }

.btn-primary[disabled] { opacity: 0.55; cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-ghost[disabled] { opacity: 0.55; cursor: not-allowed; }

/* ── Module cards ───────────────────────────────────────────────────────── */

.module-grid {
  margin-top: 2.25rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.module-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem 1.35rem 1.5rem;
}

.module-card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
}

.module-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.module-tag {
  position: absolute;
  right: 1rem;
  bottom: 0.95rem;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  border: 1px dashed var(--line);
  border-radius: 999px;
  padding: 0.14rem 0.55rem;
}

/* ── Default info page ──────────────────────────────────────────────────── */

.default-grid {
  margin-top: 2.25rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.url-format {
  margin: 0.9rem 0;
}

.url-format code {
  font-size: 1.02rem;
  padding: 0.35em 0.7em;
  display: inline-block;
}

.url-examples {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.url-examples li { margin-bottom: 0.3rem; }

.default-hint {
  color: var(--ink-faint);
  font-size: 0.85rem;
  border-top: 1px dashed var(--line);
  padding-top: 0.8rem;
  margin: 0;
}

.edition-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.2rem 0 0.9rem;
}

.edition-pill {
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
}

.feature-list {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.feature-list li { margin-bottom: 0.45rem; }

/* ── Sign-in page ───────────────────────────────────────────────────────── */

.auth-wrap {
  display: flex;
  justify-content: center;
  padding-top: 2rem;
}

.auth-card {
  width: 100%;
  max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.6);
  box-shadow: var(--shadow);
  padding: 2.25rem 2rem;
  text-align: left;
}

.auth-title {
  margin: 0.3rem 0 1.4rem;
  font-size: 1.35rem;
  word-break: break-word;
}

.auth-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}

.auth-input {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  font: inherit;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--ink);
}

.auth-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.auth-remember {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-bottom: 1.25rem;
}

.auth-submit { width: 100%; justify-content: center; }

.auth-note {
  margin: 1.1rem 0 0;
  color: var(--ink-faint);
  font-size: 0.8rem;
  border-top: 1px dashed var(--line);
  padding-top: 0.9rem;
}

/* ── Not-found page ─────────────────────────────────────────────────────── */

.nf {
  max-width: 560px;
  margin: 3rem auto 0;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.6);
  box-shadow: var(--shadow);
  padding: 3rem 2.25rem;
}

.nf-code {
  margin: 0;
  font-size: clamp(3rem, 8vw, 4.5rem);
  font-weight: 800;
  color: var(--danger);
  line-height: 1;
}

.nf-title {
  margin: 0.6rem 0 0.8rem;
  font-size: 1.4rem;
}

.nf-message {
  color: var(--ink-soft);
  margin: 0 0 1rem;
}

.nf-detail {
  color: var(--ink-faint);
  font-size: 0.88rem;
  margin: 0 0 1.6rem;
}

/* ── Footer ─────────────────────────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--ink-faint);
  font-size: 0.82rem;
}

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 720px) {
  .topnav { display: none; }
  .hero { padding: 2.25rem 1.4rem; }
}