/* base.css — Reset, Fonts, Design Tokens — v2.0.0 */

/* ── IBM Plex Mono — lokal gehostet (OFL-1.1) ──────────────────── */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono/IBMPlexMono-Regular-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono/IBMPlexMono-Regular.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono/IBMPlexMono-Medium-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono/IBMPlexMono-Medium.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono/IBMPlexMono-SemiBold-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono/IBMPlexMono-SemiBold.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono/IBMPlexMono-Bold-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/ibm-plex-mono/IBMPlexMono-Bold.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { min-height: 100vh; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ── Fonts — Inter lokal, DSGVO-konform ──────────────────────── */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/InterVariable.woff2') format('woff2');
}
/* JetBrains Mono bleibt als lokaler Fallback fuer --mono */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-SemiBold.woff2') format('woff2');
}

/* ── Design Tokens — v2.0.0 Wired-System ─────────────────────── */
:root {
  /* Flaechen */
  --paper:        #F4F2EC;
  --paper-warm:   #ECE8DE;
  --paper-bright: #FCFAF4;
  /* Tinte */
  --ink:          #0B0B0D;
  --ink-soft:     #1F1F22;
  --ink-mid:      #4A4A4E;
  --ink-mute:     #7A7A7E;
  /* Trennlinien */
  --rule:         #C9C5BA;
  --rule-fine:    #DDD8CB;
  /* Nacht (dunkle Sektionen) */
  --night:        #0A0A0B;
  --night-soft:   #131316;
  /* Akzent Wired-Rot */
  --hot:          #FF3A1F;
  --hot-soft:     #FFE4DD;
  /* Schriften */
  --sans:    "Inter", "Helvetica Neue", -apple-system, sans-serif;
  --display: "Inter", "Helvetica Neue", sans-serif;
  --mono:    "IBM Plex Mono", "JetBrains Mono", "Courier New", monospace;

  /* ── Backward-compat-Aliases fuer v1.1.0-CSS (Sequenz 2 Bridge) ── */
  /* Werden in Sequenz 3 + 4 beim Rebuild der Seiten entfernt.        */
  --bg:           var(--paper);
  --bg-pure:      var(--paper-bright);
  --bg-soft:      var(--paper-warm);
  --ink-2:        var(--ink-soft);
  --rule-strong:  var(--rule);
  --font:         var(--sans);
}

/* ── Base ────────────────────────────────────────────────────── */
body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink-soft);
  line-height: 1.5;
  font-weight: 400;
  font-size: 16px;
  background-image: radial-gradient(circle, rgba(11, 11, 13, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-optical-sizing: auto;
}
::selection { background: var(--hot); color: var(--paper-bright); }

/* ── Skip Link (Accessibility) ─────────────────────────────── */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 8px 16px;
  z-index: 9999;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* ── Container ───────────────────────────────────────────────── */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 56px);
  position: relative;
}

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

/* 800px–1100px: kompaktere Abstände, kleinere Schrift */
@media (max-width: 1100px) and (min-width: 769px) {
  .topbar-nav {
    gap: 16px;
  }
  .topbar-nav a {
    font-size: 11px;
    letter-spacing: 0.08em;
  }
  .topbar-btn {
    font-size: 11px;
    padding: 6px 10px;
  }
}

/* 601px–768px: Tablet hochkant, flex-wrap */
@media (max-width: 768px) and (min-width: 601px) {
  .topbar-inner {
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-start;
    height: auto;
    padding-top: 10px;
    padding-bottom: 10px;
  }
  .topbar-left {
    width: 100%;
    flex-wrap: wrap;
    gap: 12px;
  }
  .topbar-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: flex-start;
  }
  .topbar-btn {
    font-size: 11px;
    padding: 6px 12px;
  }
}

/* ≤600px: vertikaler Stack */
@media (max-width: 600px) {
  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    height: auto;
    padding-top: 12px;
    padding-bottom: 12px;
  }
  .topbar-left {
    width: 100%;
    flex-wrap: wrap;
    gap: 8px;
  }
  .topbar-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 12px;
  }
  .topbar-nav a {
    font-size: 10px;
  }
  .logo {
    font-size: 20px;
  }
}