/* ============================================================
   MESSSCHRIEB — Design-System
   Richtung: Instrumenten-Ablesung. Tinte auf Messpapier.
   Alles ueber Tokens, damit beide Themes sauber aufloesen.
   ============================================================ */

:root {
  /* --- Grund: kuehles Messpapier, kein warmes Creme --- */
  --bg:        #E7EBED;
  --bg-deep:   #DDE3E6;
  --surface:   #F6F8F9;
  --surface-2: #EDF1F3;
  --ink:       #16212B;
  --ink-soft:  #35485A;
  --muted:     #64798A;
  --faint:     #8FA2B0;
  --rule:      #C3CFD6;
  --rule-soft: #D6DFE4;

  /* --- Signal: Schreiberfarbe des Messgeraets --- */
  --trace:     #C33C22;   /* die rote Nadel */
  --trace-dim: #E0A092;
  --calm:      #17636F;   /* geprueft, belegt */
  --calm-dim:  #9CC3C9;

  /* --- Semantik (getrennt vom Akzent) --- */
  --ok:        #2C6F52;
  --warn:      #A66A1E;
  --crit:      #A8331F;
  --ok-bg:     #DCEBE3;
  --warn-bg:   #F3E6D2;
  --crit-bg:   #F2DBD6;

  --grid:      rgba(22, 33, 43, 0.055);
  --grid-bold: rgba(22, 33, 43, 0.10);
  --shadow:    0 1px 2px rgba(16, 30, 40, .06), 0 8px 24px -12px rgba(16, 30, 40, .18);
  --shadow-lg: 0 2px 4px rgba(16, 30, 40, .07), 0 24px 60px -24px rgba(16, 30, 40, .30);

  --f-display: "Archivo", ui-sans-serif, system-ui, sans-serif;
  --f-sans:    "Archivo", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --f-body:    "Spectral", Georgia, "Times New Roman", serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Typoskala (1.25) */
  --t-xs:   0.75rem;
  --t-sm:   0.875rem;
  --t-base: 1rem;
  --t-md:   1.125rem;
  --t-lg:   1.375rem;
  --t-xl:   1.75rem;
  --t-2xl:  2.25rem;
  --t-3xl:  3rem;
  --t-4xl:  4.25rem;

  --sp-1: .25rem; --sp-2: .5rem;  --sp-3: .75rem; --sp-4: 1rem;
  --sp-5: 1.5rem; --sp-6: 2rem;   --sp-7: 3rem;   --sp-8: 4.5rem;
  --sp-9: 7rem;

  --measure: 34rem;
  --wide: 70rem;
  --radius: 3px;   /* Messgeraete haben keine runden Ecken */
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:        #0E141A;
    --bg-deep:   #090E12;
    --surface:   #151E25;
    --surface-2: #1B2731;
    --ink:       #DEE7EC;
    --ink-soft:  #B4C4CE;
    --muted:     #8095A3;
    --faint:     #5D7181;
    --rule:      #2A3A46;
    --rule-soft: #212E38;

    --trace:     #FF6E4E;
    --trace-dim: #7A3123;
    --calm:      #55BFD1;
    --calm-dim:  #24525C;

    --ok:        #63BE92;
    --warn:      #E0A64E;
    --crit:      #F0705A;
    --ok-bg:     #14291F;
    --warn-bg:   #2B2213;
    --crit-bg:   #2C1714;

    --grid:      rgba(160, 200, 220, 0.055);
    --grid-bold: rgba(160, 200, 220, 0.10);
    --shadow:    0 1px 2px rgba(0,0,0,.4), 0 8px 24px -12px rgba(0,0,0,.6);
    --shadow-lg: 0 2px 4px rgba(0,0,0,.45), 0 24px 60px -24px rgba(0,0,0,.75);
  }
}

:root[data-theme="dark"] {
  --bg:        #0E141A;
  --bg-deep:   #090E12;
  --surface:   #151E25;
  --surface-2: #1B2731;
  --ink:       #DEE7EC;
  --ink-soft:  #B4C4CE;
  --muted:     #8095A3;
  --faint:     #5D7181;
  --rule:      #2A3A46;
  --rule-soft: #212E38;

  --trace:     #FF6E4E;
  --trace-dim: #7A3123;
  --calm:      #55BFD1;
  --calm-dim:  #24525C;

  --ok:        #63BE92;
  --warn:      #E0A64E;
  --crit:      #F0705A;
  --ok-bg:     #14291F;
  --warn-bg:   #2B2213;
  --crit-bg:   #2C1714;

  --grid:      rgba(160, 200, 220, 0.055);
  --grid-bold: rgba(160, 200, 220, 0.10);
  --shadow:    0 1px 2px rgba(0,0,0,.4), 0 8px 24px -12px rgba(0,0,0,.6);
  --shadow-lg: 0 2px 4px rgba(0,0,0,.45), 0 24px 60px -24px rgba(0,0,0,.75);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important; animation-iteration-count: 1 !important;
    transition-duration: .01ms !important; scroll-behavior: auto !important;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--t-md);
  line-height: 1.65;
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  /* Messpapier */
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    linear-gradient(var(--grid-bold) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-bold) 1px, transparent 1px);
  background-size: 12px 12px, 12px 12px, 60px 60px, 60px 60px;
  background-position: -1px -1px;
}
img, svg { max-width: 100%; }
[hidden] { display: none !important; }

:focus-visible {
  outline: 2px solid var(--trace);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ---------- Typo ---------- */
h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-stretch: 118%;
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.015em;
  text-wrap: balance;
  margin: 0;
}
h1 { font-size: clamp(2.4rem, 7vw, var(--t-4xl)); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.7rem, 4.2vw, var(--t-2xl)); }
h3 { font-size: var(--t-lg); letter-spacing: -0.005em; }
h4 { font-size: var(--t-base); }
p  { margin: 0 0 var(--sp-4); max-width: var(--measure); }
a  { color: var(--calm); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--trace); }
strong { font-weight: 600; color: var(--ink); }

.eyebrow {
  max-width: 34rem;
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex; align-items: center; gap: var(--sp-3);
}
.eyebrow::after {
  content: ""; flex: 1; height: 1px; background: var(--rule);
}
.lead {
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 40rem;
}
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.num  { font-family: var(--f-display); font-stretch: 118%; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

/* ---------- Layout ---------- */
.wrap { width: min(100% - 2.5rem, var(--wide)); margin-inline: auto; }
.narrow { width: min(100% - 2.5rem, 48rem); margin-inline: auto; }
section { padding-block: var(--sp-8); }
.stack   { display: flex; flex-direction: column; gap: var(--sp-4); }
.stack-6 { display: flex; flex-direction: column; gap: var(--sp-6); }
.stack-7 { display: flex; flex-direction: column; gap: var(--sp-7); }

.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: var(--sp-5);
}

/* ---------- Controls ---------- */
button, input, select { font: inherit; color: inherit; }
.btn {
  font-family: var(--f-mono); font-size: var(--t-sm); letter-spacing: .04em;
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--rule); border-radius: var(--radius);
  padding: .55em 1.1em; cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { border-color: var(--trace); color: var(--trace); }
.btn[aria-pressed="true"], .btn.is-on {
  background: var(--ink); color: var(--bg); border-color: var(--ink);
}