/* ==========================================================================
   Design tokens · Helmut Schoch GmbH
   Source: Markenhandbuch (Farben, Typografie) + Claude Design „5b Bild-Editorial“
   ========================================================================== */

@font-face {
  font-family: "Sandor";
  src: url("../assets/fonts/Sandor-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Sandor";
  src: url("../assets/fonts/Sandor-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Sandor";
  src: url("../assets/fonts/Sandor-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
/* Metric-matched fallback keeps layout shift low while Sandor loads. */
@font-face {
  font-family: "Sandor Fallback";
  src: local("Arial"), local("Helvetica Neue"), local("Helvetica");
  size-adjust: 104%;
  ascent-override: 92%;
  descent-override: 24%;
  line-gap-override: 0%;
}

:root {
  /* — Brand colours (Markenhandbuch B 15) — */
  --c-black: #141614;          /* Schoch Schwarz · Hauptfläche, Schrift */
  --c-mint: #3ef7b3;           /* Logo, Akzent, Buttons */
  --c-lavender: #b9a7ee;       /* aus Helmines Kopftuch */
  --c-chalk: #ffffff;          /* Weiß · Grundfläche */

  /* — Derived surfaces & ink — */
  --c-black-raised: #1f221f;
  --c-black-sunken: #0e0f0e;
  --c-black-line: rgb(255 255 255 / 0.16);
  --c-black-line-strong: rgb(255 255 255 / 0.28);
  --c-chalk-raised: #f0f0f0;
  --c-chalk-line: rgb(20 22 20 / 0.16);
  --c-ink-on-dark: var(--c-chalk);
  --c-ink-on-dark-soft: #c3c7c1;   /* 11.0:1 on black */
  --c-ink-on-dark-muted: #a9aea8;  /*  8.1:1 on black */
  --c-ink-on-dark-faint: #858a84;  /*  5.1:1 on black */
  --c-ink-on-light: var(--c-black);
  --c-ink-on-light-soft: #3d413c;  /* 10.4:1 on white */
  --c-ink-on-light-muted: #5a5e59; /*  6.6:1 on white */

  /* — Semantic — */
  --c-bg: var(--c-black);
  --c-fg: var(--c-ink-on-dark);
  --c-focus: var(--c-mint);
  --c-error-on-light: #a3261b;

  /* — Typography — */
  --font-sans: "Sandor", "Sandor Fallback", Arial, sans-serif;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;

  /* Fluid type scale (min @ 20rem, max @ 90rem) */
  --fs-label: clamp(0.8125rem, 0.79rem + 0.1vw, 0.875rem);
  --fs-small: clamp(0.875rem, 0.85rem + 0.13vw, 0.9375rem);
  --fs-body: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --fs-lead: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  --fs-h4: clamp(1.1875rem, 1.12rem + 0.35vw, 1.375rem);
  --fs-h3: clamp(1.5rem, 1.3rem + 0.9vw, 2rem);
  --fs-statement: clamp(1.75rem, 1.05rem + 2.75vw, 3.25rem);
  --fs-card: clamp(1.75rem, 1.2rem + 2vw, 2.75rem);
  --fs-hero: clamp(2.25rem, 0.9rem + 3.6vw, 4.5rem);
  --fs-h2: var(--fs-statement);

  --lh-snug: 1.12;
  --lh-normal: 1.5;
  --tracking-display: -0.045em;
  --tracking-heading: -0.035em;
  --tracking-statement: -0.025em;

  /* — Spacing (4px base) — */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 2.5rem;
  --sp-8: 3.5rem;
  --sp-9: 5rem;
  --section-y: clamp(4.5rem, 2.6rem + 6.8vw, 9.5rem);
  --section-gap: clamp(2.5rem, 1.8rem + 2.6vw, 4rem);

  /* — Layout — */
  --gutter: clamp(1.25rem, 0.6rem + 2.8vw, 3rem);
  --container: 105rem;           /* 1680px */
  --container-text: 46rem;
  --label-col: 17.5rem;          /* chapter index column (280px) */
  --grid-gap: clamp(0.5rem, 0.35rem + 0.5vw, 0.75rem);
  --col-gap: clamp(1.5rem, 1rem + 2vw, 3rem);
  --header-h: 4.25rem;

  /* — Shape — */
  --r-xs: 4px;
  --r-sm: 6px;
  --hairline: 1px solid var(--c-black-line);
  --hairline-strong: 1px solid var(--c-black-line-strong);
  --hairline-light: 1px solid var(--c-chalk-line);

  /* — Elevation — */
  --shadow-stack: 0 -12px 40px rgb(0 0 0 / 0.35);

  /* — Motion — */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.18, 1);
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --dur-press: 90ms;             /* a tap must answer instantly */
  --dur-fast: 180ms;
  --dur-base: 320ms;
  --dur-slow: 900ms;
  --dur-reveal: 1100ms;
  --dur-mask: 1300ms;

  /* — Layers — */
  --z-header: 50;
  --z-actionbar: 60;
  --z-menu: 80;
  --z-skip: 100;
}

@media (min-width: 64em) {
  :root {
    --header-h: 5.75rem;         /* 92px, as in the design */
  }
}