/* ============================================================
   Rekruten-Schmiede — Light institutional theme
   Inspired by German public-authority sites (Bundesamt etc.):
   gray/white "uniform" palette, sober sans, clear structure.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fira+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Fira+Mono:wght@400;500;700&display=swap');

:root {
  /* --- Neutrals (uniform gray / paper white) --- */
  --paper:        #ffffff;
  --paper-2:      #f5f6f7;   /* page background */
  --paper-3:      #eceef0;   /* sunken / alt rows */
  --line-soft:    #e3e5e8;
  --line:         #d3d6da;
  --line-strong:  #b9bdc2;

  /* --- Ink (anthracite) --- */
  --ink:          #1c2024;
  --ink-2:        #474d53;
  --ink-3:        #6b7178;
  --ink-4:        #939aa1;
  --on-accent:    #ffffff;

  /* --- Accent (set by theme; default: Oliv) --- */
  --accent:       #4d5a3c;
  --accent-700:   #3c4730;
  --accent-100:   #eef0e8;   /* light tint background */
  --accent-200:   #dde2d2;
  --accent-ink:   #39432c;   /* accessible text on light tint */

  /* --- Status --- */
  --ok:           #2e6b42;
  --ok-bg:        #e6f0e9;
  --warn:         #8a6d1f;
  --warn-bg:      #f4ecd6;
  --info:         #2b5878;
  --info-bg:      #e4edf3;
  --danger:       #8c3636;
  --danger-bg:    #f3e3e3;

  /* --- Type --- */
  --font-sans: 'Fira Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'Fira Mono', ui-monospace, 'SF Mono', 'Consolas', monospace;

  /* fluid type scale */
  --fs-mega:   clamp(2.4rem, 1.6rem + 3.2vw, 3.9rem);
  --fs-h1:     clamp(1.9rem, 1.4rem + 2vw, 2.8rem);
  --fs-h2:     clamp(1.45rem, 1.2rem + 1vw, 1.9rem);
  --fs-h3:     clamp(1.15rem, 1.05rem + 0.4vw, 1.3rem);
  --fs-body:   1.0625rem;   /* 17px */
  --fs-ui:     0.9375rem;   /* 15px */
  --fs-cap:    0.8125rem;   /* 13px */
  --fs-meta:   0.75rem;     /* 12px label/mono */

  --lh-tight: 1.12;
  --lh-head:  1.2;
  --lh-body:  1.6;

  /* --- Geometry --- */
  --r-xs: 3px;
  --r-sm: 5px;
  --r-md: 7px;
  --r-lg: 10px;
  --maxw: 1180px;

  /* --- Elevation (very restrained, paper-like) --- */
  --sh-sm: 0 1px 2px rgba(28,32,36,.06);
  --sh-md: 0 2px 6px rgba(28,32,36,.07), 0 1px 2px rgba(28,32,36,.06);
  --sh-lg: 0 8px 24px rgba(28,32,36,.10), 0 2px 6px rgba(28,32,36,.06);

  --ease: cubic-bezier(.22, 1, .36, 1);
  --t-fast: 140ms var(--ease);
  --t-base: 220ms var(--ease);
}

/* ---- Accent themes (Tweak-switchable via [data-accent]) ---- */
[data-accent="oliv"] {
  --accent: #4d5a3c; --accent-700: #3c4730; --accent-100: #eef0e8; --accent-200: #dde2d2; --accent-ink: #39432c;
}
[data-accent="anthrazit"] {
  --accent: #3a4045; --accent-700: #2a2f33; --accent-100: #eceef0; --accent-200: #dadde0; --accent-ink: #2c3135;
}
[data-accent="stahlblau"] {
  --accent: #2f4f68; --accent-700: #243d51; --accent-100: #e7eef3; --accent-200: #d2e0e9; --accent-ink: #24465c;
}
[data-accent="sandgrau"] {
  --accent: #6a5f4c; --accent-700: #524a3a; --accent-100: #f0ede5; --accent-200: #e2dccd; --accent-ink: #504734;
}

/* ============================================================
   Reset / base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--ink);
  background: var(--paper-2);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { margin: 0; line-height: var(--lh-head); font-weight: 700; letter-spacing: -0.01em; color: var(--ink); }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }

::selection { background: var(--accent-200); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--r-xs);
}

/* ============================================================
   Layout primitives
   ============================================================ */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: clamp(1rem, 0.4rem + 2.4vw, 2.5rem); }
.section { padding-block: clamp(2.75rem, 2rem + 3vw, 4.75rem); }
.section--alt { background: var(--paper); border-block: 1px solid var(--line-soft); }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-ink);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: var(--accent);
  display: inline-block;
}

.section-head { max-width: 62ch; margin-bottom: clamp(1.5rem, 1rem + 1.5vw, 2.5rem); }
.section-head h2 { font-size: var(--fs-h2); margin-top: .7rem; }
.section-head p { color: var(--ink-2); margin-top: .6rem; font-size: var(--fs-ui); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --bg: var(--accent);
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .72rem 1.25rem;
  font-size: var(--fs-ui); font-weight: 600;
  border: 1px solid transparent; border-radius: var(--r-sm);
  background: var(--bg); color: var(--on-accent);
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
  white-space: nowrap;
}
.btn:hover { background: var(--accent-700); }
.btn:active { transform: scale(.975); }
.btn .ico { width: 18px; height: 18px; }

.btn--ghost {
  background: var(--paper); color: var(--ink);
  border-color: var(--line-strong);
}
.btn--ghost:hover { background: var(--paper-3); border-color: var(--ink-4); }

.btn--quiet {
  background: transparent; color: var(--accent-ink);
  border-color: transparent; padding-inline: .4rem;
}
.btn--quiet:hover { background: var(--accent-100); }

.btn--lg { padding: .9rem 1.6rem; font-size: var(--fs-body); }
.btn--block { width: 100%; }

/* ============================================================
   Cards / surfaces
   ============================================================ */
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: var(--sh-sm);
}

/* ============================================================
   Tags / chips / badges
   ============================================================ */
.chip {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: var(--fs-meta); font-weight: 600;
  padding: .2rem .55rem;
  border-radius: var(--r-xs);
  background: var(--accent-100); color: var(--accent-ink);
  border: 1px solid var(--accent-200);
  white-space: nowrap;
}
.chip--mono { font-family: var(--font-mono); font-weight: 500; letter-spacing: .02em; }
.chip--neutral { background: var(--paper-3); color: var(--ink-2); border-color: var(--line); }
.chip--ok { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.chip--warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }

/* divider */
.rule { height: 1px; background: var(--line-soft); border: 0; }

/* generic grid */
.grid { display: grid; gap: clamp(.85rem, .5rem + 1vw, 1.4rem); }

/* image-slot default look inside this app */
image-slot {
  background: var(--paper-3);
  border: 1px dashed var(--line-strong);
  color: var(--ink-4);
  font-family: var(--font-mono);
  font-size: var(--fs-meta);
}

/* skip motion */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---- Tweak-driven overrides ---- */
.no-strip .hdr__strip { display: none; }
.corner-sharp { --r-xs: 0; --r-sm: 0; --r-md: 0; --r-lg: 0; }
.corner-round { --r-xs: 6px; --r-sm: 9px; --r-md: 14px; --r-lg: 18px; }
.hero__title { font-size: calc(var(--fs-mega) * var(--heading-scale, 1)); }
.page-head h1 { font-size: calc(var(--fs-h1) * var(--heading-scale, 1)); }
.section-head h2, .course-cat__head h2 { font-size: calc(var(--fs-h2) * var(--heading-scale, 1)); }

/* utility */
.mono { font-family: var(--font-mono); }
.muted { color: var(--ink-3); }
.center { text-align: center; }
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.wrap-gap { flex-wrap: wrap; gap: .75rem; }