/*
  Design tokens — the single source of truth for the visual system.
  No color, size, spacing, or timing value should appear anywhere else
  in the codebase outside of this file. If a value is needed and no
  token fits, add a token here first.

  Palette is derived from the accretion-disk cover art: a warm
  near-black ground, a cold blue-white jet accent, and a dusty
  rust/mauve disk accent used sparingly. Hexes are placeholders to be
  tuned once the art is dropped in — keep every consumer pointed at
  the custom property, never the literal value, so retuning here is
  the only edit needed.
*/

:root {
  /* ---------------------------------------------------------------
     Color — dark, warm-neutral ground; accents used sparingly.
  --------------------------------------------------------------- */
  --bg: #0a0706;              /* deep near-black, warm brown undertone */
  --bg-raised: #16110d;       /* slightly lifted warm charcoal (panels, nav) */
  --bg-overlay: #1f1712;      /* one step further up, for hover/active states */

  --text: #ece6df;            /* warm bone white — primary text */
  --text-dim: #948b81;        /* muted warm grey — secondary text, captions */
  --text-faint: #5c554d;      /* lowest-emphasis text, disabled states */
  --text-bright: #ffffff;     /* true white — the hero title only, and
                                  only once it's brightened in (see
                                  .hero-title, hero.css); pure white
                                  reads distinctly brighter than --text
                                  against the busy scene behind it,
                                  which is the point at that one size */

  --accent: #9db8d8;          /* cold blue-white of the jet — restrained use */
  --accent-warm: #a56b6b;     /* dusty rust/mauve of the disk — secondary */

  --line: rgba(236, 230, 223, 0.1);   /* hairline dividers on --bg */
  --line-raised: rgba(236, 230, 223, 0.14); /* hairline dividers on --bg-raised */

  /* ---------------------------------------------------------------
     Type — one family (Geist), no monospace anywhere. Numerals are
     set in Geist with tabular figures via --numeric-variant.
  --------------------------------------------------------------- */
  --font-sans: 'Geist', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --numeric-variant: tabular-nums;

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-bold: 700;

  /* Fluid, editorial type scale. Step 0 is body text. */
  --step--1: clamp(0.8rem, 0.78rem + 0.14vw, 0.9375rem);
  --step-0:  clamp(1rem, 0.96rem + 0.22vw, 1.125rem);
  --step-1:  clamp(1.25rem, 1.16rem + 0.47vw, 1.5rem);
  --step-2:  clamp(1.5rem, 1.32rem + 0.9vw, 2rem);
  --step-3:  clamp(1.875rem, 1.53rem + 1.7vw, 2.75rem);
  --step-4:  clamp(2.25rem, 1.6rem + 3.2vw, 3.75rem);
  --step-5:  clamp(2.5rem, 1rem + 8vw, 6rem); /* hero display */

  --leading-tight: 1.1;   /* display headings */
  --leading-snug: 1.3;    /* subheads, short lines */
  --leading-normal: 1.6;  /* body copy */

  --tracking-tight: -0.02em;  /* large display sizes */
  --tracking-normal: 0;
  --tracking-wide: 0.08em;    /* small caps / eyebrows */

  /* ---------------------------------------------------------------
     Spacing — generous, consistent rhythm. This is an editorial
     site: prefer whitespace over density.
  --------------------------------------------------------------- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 9rem;

  /* ---------------------------------------------------------------
     Layout
  --------------------------------------------------------------- */
  --content-max: 68ch;      /* prose measure */
  --content-max-wide: 90rem; /* gallery/grid measure — press coverage
                                 and anything else that needs more
                                 columns than a reading column allows,
                                 short of true full-bleed */
  --content-pad: var(--space-4); /* min side gutter on narrow viewports */
  --radius: 3px;            /* restrained — this is not a rounded-card UI */
  --radius-cover: 6px;      /* the printed cover + its live-scene window —
                                just enough to take the sharpness off the
                                corners, barely noticeable */

  /* ---------------------------------------------------------------
     Motion — slow, heavy, buttery. Nothing snappy.
  --------------------------------------------------------------- */
  --ease-weighty: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);

  --duration-fast: 0.6s;
  --duration-base: 0.9s;
  --duration-slow: 1.2s;

  /* Looping ambient motion (idle-state breathing, not scroll-driven)
     lives on its own, much longer timescale — read by hero.js so the
     JS-side GSAP loop stays governed by the same source of truth. */
  --duration-ambient: 4s;       /* jet pulse */
  --duration-ambient-slow: 10s; /* disk / haze idle drift */
  --ease-ambient: cubic-bezier(0.45, 0, 0.55, 1); /* sine-like, for loops */

  /* ---------------------------------------------------------------
     Cover geometry — the published Nature cover's trim size, used to
     size the hero's convergence frame at true aspect ratio.
  --------------------------------------------------------------- */
  --cover-ratio-w: 880;
  --cover-ratio-h: 1168;

  /* ---------------------------------------------------------------
     Team grid — one fluid width for every headshot oval (team.css
     rule reads this once; every person gets it, no per-person
     override, so there is never a hierarchy of sizes). Ratio is
     4/5 — portrait, not a circle, restrained rather than tall/narrow.
  --------------------------------------------------------------- */
  --avatar-w: clamp(6.25rem, 5.4rem + 3.5vw, 8rem);
  --avatar-ratio: 4 / 5;

  /* Warm-black scrim for text legibility over the artwork. */
  --scrim: rgba(6, 4, 3, 0.55);
}