/*
  AgentChat Design Tokens, Stil „Graphit“: neutral, flach, viel Weißraum.
  Eine Quelle für Landingpage, Dashboard, Admin, Billing und Rechtsseiten.
  Hell ist Standard, Dunkel folgt prefers-color-scheme: dark. data-theme gibt es nur im Styleguide.
  Doku und Kontrastwerte: docs/design-system.md
  Wichtig: keine Gedankenstriche in dieser Datei, sie wird in Server-Seiten eingebettet.
*/

/* Schriften: IBM Plex Sans (400, 500, 600, 700) und IBM Plex Mono (400), selbst ausgeliefert unter /site/fonts/
   (SIL Open Font License, Lizenztexte daneben). Je ein Latin- und ein Latin-Ext-Teil. Wo /site/ fehlt (Worker), greift system-ui. */
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-sans-latin-400.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 Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-sans-latin-ext-400.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 Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-sans-latin-500.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 Sans";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-sans-latin-ext-500.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 Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-sans-latin-600.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 Sans";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-sans-latin-ext-600.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 Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-sans-latin-700.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 Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-sans-latin-ext-700.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("/site/fonts/ibm-plex-mono-latin-400.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: 400;
  font-display: swap;
  src: url("/site/fonts/ibm-plex-mono-latin-ext-400.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;
}

:root {
  /* Rohpalette: Graphit (neutral, ganz leicht kühl). Die einzige Farbfamilie neben den Status-Farben. */
  --graphite-0: #ffffff;
  --graphite-50: #f6f7f9;
  --graphite-100: #eef0f3;
  --graphite-200: #e4e7ec;
  --graphite-300: #d0d5dd;
  --graphite-400: #7e889a;
  --graphite-500: #5b6474;
  --graphite-600: #344054;
  --graphite-700: #1e293b;
  --graphite-800: #18181b;

  /* Rohpalette: Dunkel (neutral) */
  --dark-50: #ededed;
  --dark-100: #d4d4d8;
  --dark-200: #a1a1aa;
  --dark-300: #71717a;
  --dark-600: #34373f;
  --dark-700: #2a2d34;
  --dark-800: #1e2127;
  --dark-850: #16181d;
  --dark-900: #0f1115;
  --dark-950: #0b0c0f;

  /* Schrift */
  --font-display: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: "IBM Plex Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Typo-Skala (klassische Reihe 12, 14, 16, 18, 21, 24, 36, 48) plus fluide Rollen */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.3125rem;
  --text-xl: 1.5rem;
  --text-2xl: 2.25rem;
  --text-3xl: 3rem;

  --type-display: clamp(2.4rem, 6vw + 0.6rem, 4.25rem);
  --type-h1: clamp(1.875rem, 3vw + 1rem, 3rem);
  --type-h2: clamp(1.5rem, 1.6vw + 1rem, 2.25rem);
  --type-h3: var(--text-lg);
  --type-h4: var(--text-md);
  --type-body: var(--text-base);
  --type-body-lg: var(--text-md);
  --type-small: var(--text-sm);
  --type-mono: 0.875em;

  --leading-display: 1.05;
  --leading-tight: 1.15;
  --leading-snug: 1.25;
  --leading-body: 1.6;
  --leading-small: 1.5;

  --tracking-display: -0.025em;
  --tracking-heading: -0.02em;
  --tracking-tight: -0.01em;

  --measure: 68ch;

  /* Abstände: 4er-Raster */
  --space-0: 0;
  --space-px: 1px;
  --space-0-5: 2px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-14: 56px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-28: 112px;

  /* Radien: klein und ruhig, nur Status-Pillen und Badges sind rund */
  --radius-xs: 6px;
  --radius-sm: 6px;
  --radius-control: 6px;
  --radius-md: 8px;
  --radius-lg: 8px;
  --radius-bubble: 8px;
  --radius-pill: 999px;

  /* Rahmen */
  --border-width: 1px;
  --border-width-strong: 2px;

  /* Layout */
  --container: 1180px;
  --container-app: 1040px;
  --container-text: 760px;
  --topbar-height: 64px;

  /* Bewegung */
  --duration-instant: 80ms;
  --duration-fast: 140ms;
  --duration-base: 200ms;
  --duration-slow: 320ms;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.2, 0.8, 0.2, 1);

  /* Ebenen */
  --z-sticky: 10;
  --z-overlay: 40;
  --z-modal: 50;
  --z-toast: 60;
}

/* Hell (Standard und ohne Systemvorgabe) */
:root,
[data-theme="light"] {
  color-scheme: light;

  --bg: var(--graphite-0);
  --surface: var(--graphite-50);
  --surface-2: var(--graphite-100);
  --surface-sunken: var(--graphite-50);
  --field-bg: var(--graphite-0);
  --surface-raised: var(--graphite-0);
  --surface-overlay: rgba(255, 255, 255, 0.92);
  --scrim: rgba(15, 23, 42, 0.4);

  --border: var(--graphite-200);
  --border-subtle: var(--graphite-100);
  --border-strong: var(--graphite-400);

  --text: var(--graphite-800);
  --text-muted: var(--graphite-500);
  --text-soft: var(--graphite-600);
  --text-placeholder: var(--graphite-500);

  --accent: var(--graphite-800);
  --accent-hover: #2b2b2b;
  --accent-active: #000000;
  --accent-soft: rgba(15, 23, 42, 0.04);
  --accent-soft-strong: rgba(15, 23, 42, 0.1);
  --on-accent: #ffffff;
  --link: var(--graphite-800);
  --link-hover: var(--graphite-600);

  --focus-color: var(--graphite-800);

  --success-text: #127a4b;
  --success-surface: #effaf4;
  --success-border: #c3e8d4;
  --success-solid: #127a4b;

  --warning-text: #a15c07;
  --warning-surface: #fff8ed;
  --warning-border: #f5dbb5;
  --warning-solid: #a15c07;

  --danger-text: #b42318;
  --danger-surface: #fef3f2;
  --danger-border: #f8cbc6;
  --danger-solid: #b42318;
  --on-danger: #ffffff;

  --info-text: var(--graphite-600);
  --info-surface: var(--graphite-50);
  --info-border: var(--graphite-200);
  --info-solid: var(--graphite-500);

  --neutral-text: var(--graphite-600);
  --neutral-surface: var(--graphite-50);
  --neutral-border: var(--graphite-200);

  --accent-text: var(--graphite-800);
  --accent-surface: var(--graphite-100);
  --accent-border: var(--graphite-300);

  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow-md: 0 2px 8px rgba(16, 24, 40, 0.05);
  --shadow-lg: 0 4px 16px rgba(16, 24, 40, 0.06);
}

/* Dunkel über Systemeinstellung. Kein Umschalter in der App, nur der Styleguide setzt data-theme. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --bg: var(--dark-900);
    --surface: var(--dark-850);
    --surface-2: var(--dark-800);
    --surface-sunken: var(--dark-950);
    --field-bg: var(--dark-900);
    --surface-raised: var(--dark-800);
    --surface-overlay: rgba(15, 17, 21, 0.92);
    --scrim: rgba(0, 0, 0, 0.6);

    --border: var(--dark-700);
    --border-subtle: var(--dark-800);
    --border-strong: var(--dark-300);

    --text: var(--dark-50);
    --text-muted: var(--dark-200);
    --text-soft: var(--dark-100);
    --text-placeholder: var(--dark-200);

    --accent: var(--dark-50);
    --accent-hover: #ffffff;
    --accent-active: var(--dark-100);
    --accent-soft: rgba(255, 255, 255, 0.04);
    --accent-soft-strong: rgba(255, 255, 255, 0.12);
    --on-accent: var(--dark-900);
    --link: var(--dark-50);
    --link-hover: #ffffff;

    --focus-color: var(--dark-50);

    --success-text: #5fd39a;
    --success-surface: #0f241a;
    --success-border: #1e4a34;
    --success-solid: #5fd39a;

    --warning-text: #f2b45a;
    --warning-surface: #2a1f0e;
    --warning-border: #5a4216;
    --warning-solid: #f2b45a;

    --danger-text: #ff8b80;
    --danger-surface: #2c1414;
    --danger-border: #5e2722;
    --danger-solid: #ff8b80;
    --on-danger: var(--dark-900);

    --info-text: var(--dark-100);
    --info-surface: var(--dark-850);
    --info-border: var(--dark-700);
    --info-solid: var(--dark-200);

    --neutral-text: var(--dark-100);
    --neutral-surface: var(--dark-850);
    --neutral-border: var(--dark-700);

    --accent-text: var(--dark-50);
    --accent-surface: var(--dark-800);
    --accent-border: var(--dark-600);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.35);
  }
}

/* Dunkel ausdrücklich gewählt (Styleguide). Muss mit dem Block darüber übereinstimmen, check-contrast prüft das. */
[data-theme="dark"] {
  color-scheme: dark;

  --bg: var(--dark-900);
  --surface: var(--dark-850);
  --surface-2: var(--dark-800);
  --surface-sunken: var(--dark-950);
  --field-bg: var(--dark-900);
  --surface-raised: var(--dark-800);
  --surface-overlay: rgba(15, 17, 21, 0.92);
  --scrim: rgba(0, 0, 0, 0.6);

  --border: var(--dark-700);
  --border-subtle: var(--dark-800);
  --border-strong: var(--dark-300);

  --text: var(--dark-50);
  --text-muted: var(--dark-200);
  --text-soft: var(--dark-100);
  --text-placeholder: var(--dark-200);

  --accent: var(--dark-50);
  --accent-hover: #ffffff;
  --accent-active: var(--dark-100);
  --accent-soft: rgba(255, 255, 255, 0.04);
  --accent-soft-strong: rgba(255, 255, 255, 0.12);
  --on-accent: var(--dark-900);
  --link: var(--dark-50);
  --link-hover: #ffffff;

  --focus-color: var(--dark-50);

  --success-text: #5fd39a;
  --success-surface: #0f241a;
  --success-border: #1e4a34;
  --success-solid: #5fd39a;

  --warning-text: #f2b45a;
  --warning-surface: #2a1f0e;
  --warning-border: #5a4216;
  --warning-solid: #f2b45a;

  --danger-text: #ff8b80;
  --danger-surface: #2c1414;
  --danger-border: #5e2722;
  --danger-solid: #ff8b80;
  --on-danger: var(--dark-900);

  --info-text: var(--dark-100);
  --info-surface: var(--dark-850);
  --info-border: var(--dark-700);
  --info-solid: var(--dark-200);

  --neutral-text: var(--dark-100);
  --neutral-surface: var(--dark-850);
  --neutral-border: var(--dark-700);

  --accent-text: var(--dark-50);
  --accent-surface: var(--dark-800);
  --accent-border: var(--dark-600);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.35);
}

/* Fokus-Ring: Breite und Abstand überall gleich, Farbe je Theme (--focus-color). */
:root {
  --focus-width: 2px;
  --focus-offset: 2px;
}

/* Weniger Bewegung: Dauer auf null, Übergänge bleiben technisch erhalten */
@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-instant: 0ms;
    --duration-fast: 0ms;
    --duration-base: 0ms;
    --duration-slow: 0ms;
  }
}