/* ======================================================================
   PULS.MS · landing page for puls-muenster.de
   ----------------------------------------------------------------------
   Umbrella page for the three sibling dashboards BusPuls.MS, ZugPuls.MS
   and ParkPuls.MS. Visual language = the shared "Daylight" identity of
   BusPuls/ParkPuls: blue-tinted paper canvas, white cards with soft
   shadows, cyan #00B4F0 + coral #FF4757 accents.
   Fonts: IBM Plex Sans Condensed (display), DM Sans (UI),
          JetBrains Mono (figures).
   ====================================================================== */

:root {
  --serif: 'IBM Plex Sans Condensed', 'Inter', system-ui, -apple-system, "Segoe UI", sans-serif;
  --sans:  'DM Sans', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --mono:  'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --paper:       #eef4fa;
  --paper-deep:  #dde8f2;
  --surface:     #ffffff;
  --surface-2:   #f4f8fc;
  --ink:         #14202c;
  --ink-2:       #3a4a5c;
  --muted:       #5e6c7d;             /* WCAG AA on paper & white */
  --dim:         #b3c0cd;             /* non-text only */
  --hairline:    rgba(20, 40, 64, 0.10);
  --hairline-2:  rgba(20, 40, 64, 0.06);

  --brand:       #00B4F0;
  --brand-2:     #0091C2;
  --brand-soft:  #e1f7fe;
  --brand-line:  rgba(0, 180, 240, 0.32);

  --accent:      #FF4757;
  --accent-soft: #ffe9eb;

  --good:        #15803d;

  --radius-s:  8px;
  --radius:    12px;
  --radius-l:  18px;

  --shadow-sm: 0 1px 2px rgba(20,40,64,0.06), 0 1px 1px rgba(20,40,64,0.04);
  --shadow-md: 0 4px 18px rgba(20,40,64,0.08), 0 2px 4px rgba(20,40,64,0.05);
  --shadow-lg: 0 12px 36px rgba(20,40,64,0.12), 0 4px 12px rgba(20,40,64,0.07);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(1100px 500px at 85% -120px, rgba(0, 180, 240, 0.10), transparent 70%),
    radial-gradient(900px 460px at -120px 30%, rgba(255, 71, 87, 0.06), transparent 70%),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

/* ---------------------------------------------------------------- topbar */

#topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 22px 24px 0;
}

#brand { display: flex; align-items: center; gap: 12px; }

#brand .mark img { display: block; border-radius: 9px; }

.brand-text p { margin: 0; }

.brand-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: 0.3px;
  line-height: 1.1;
}

.brand-suffix { color: var(--accent); }

.brand-sub {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.2px;
}

#topbar nav { display: flex; gap: 6px; }

#topbar nav a {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  padding: 7px 13px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: border-color 120ms ease, color 120ms ease;
}

#topbar nav a:hover { border-color: var(--brand-line); color: var(--brand-2); }

/* ------------------------------------------------------------------ hero */

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px 56px;
}

.hero { padding: 64px 0 40px; max-width: 720px; }

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--brand-2);
  background: var(--brand-soft);
  border: 1px solid var(--brand-line);
  border-radius: 999px;
  padding: 6px 14px;
}

.live-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2.4s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 71, 87, 0.45); }
  50%      { box-shadow: 0 0 0 6px rgba(255, 71, 87, 0); }
}

@media (prefers-reduced-motion: reduce) {
  .live-dot { animation: none; }
  html { scroll-behavior: auto; }
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(38px, 6vw, 58px);
  line-height: 1.04;
  letter-spacing: 0.2px;
  margin: 0 0 16px;
}

.hero-lede {
  font-size: 17px;
  color: var(--ink-2);
  margin: 0;
  max-width: 640px;
}

/* ----------------------------------------------------------------- cards */

.tools {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 8px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-l);
  padding: 22px 22px 20px;
  box-shadow: var(--shadow-md);
  transition: transform 140ms ease, box-shadow 140ms ease, border-color 140ms ease;
}

.card:hover,
.card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--brand-line);
}

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.card-icon { width: 120px; height: 56px; object-fit: contain; }

.card-domain {
  margin: 4px 0 0;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--muted);
  letter-spacing: 0.2px;
}

.card h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 27px;
  letter-spacing: 0.2px;
  line-height: 1.15;
}

.card h2 .ms { color: var(--accent); }

/* Stretched link: whole card is clickable, link text stays the h2 */
.card-link { color: inherit; text-decoration: none; outline: none; }

.card-link::after { content: ""; position: absolute; inset: 0; border-radius: var(--radius-l); }

.card-link:focus-visible::after {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.card-tagline {
  margin: 2px 0 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--brand-2);
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.card-desc {
  margin: 0 0 18px;
  font-size: 14.5px;
  color: var(--ink-2);
  flex-grow: 1;
}

/* KPI teaser row */

.kpis {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 0 0 16px;
}

.kpi {
  background: var(--surface-2);
  border: 1px solid var(--hairline-2);
  border-radius: var(--radius);
  padding: 10px 12px 9px;
}

.kpi dt {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin: 0 0 2px;
}

.kpi dd {
  margin: 0;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 21px;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.kpi dd .unit { font-size: 12.5px; color: var(--muted); margin-left: 2px; }

.kpis.is-error .kpi dd { color: var(--dim); }

.card-cta {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
  color: var(--brand-2);
}

.card-cta .arrow { transition: transform 140ms ease; display: inline-block; }

.card:hover .card-cta .arrow { transform: translateX(3px); }

/* ---------------------------------------------------------------- ticker */

.ticker {
  margin: 14px 2px 0;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--muted);
}

/* ----------------------------------------------------------------- about */

.about {
  margin-top: 52px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-l);
  padding: 26px 28px;
  box-shadow: var(--shadow-sm);
  max-width: 820px;
}

.about h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 24px;
  margin: 0 0 8px;
}

.about p { margin: 0; color: var(--ink-2); }

/* ---------------------------------------------------------------- footer */

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

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 18px 24px;
}

footer p { margin: 0; font-size: 12.5px; color: var(--muted); }

footer nav { display: flex; gap: 18px; }

footer nav a {
  font-size: 12.5px;
  color: var(--ink-2);
  text-decoration: none;
}

footer nav a:hover { color: var(--brand-2); text-decoration: underline; }

/* ------------------------------------------------------------ responsive */

@media (max-width: 900px) {
  .tools { grid-template-columns: 1fr; max-width: 560px; }
  .hero { padding-top: 44px; }
}

@media (max-width: 480px) {
  #topbar { flex-direction: column; align-items: flex-start; gap: 12px; }
  .kpis { grid-template-columns: 1fr 1fr; }
}