/* ============================================================
   theme.css — Design tokens + modern base
   Vapor Rain (Tyler Wallentine) — v2 revamp
   Keeps the existing teal/ink palette & Space Grotesk type,
   but adds tokens, a fluid type scale, and a clean base.
   ============================================================ */

:root {
  /* ---- Brand palette (unchanged hues) ---- */
  --color-primary:        #022d33;  /* deep teal */
  --color-primary-hover:  #034d5a;  /* lighter teal */
  --color-ink:            #0d1d21;  /* near-black teal */
  --color-accent:         #617d61;  /* sage hover */
  --color-accent-strong:  #4f6b4f;

  /* ---- Surfaces & text ---- */
  --color-bg:             #ffffff;
  --color-surface:        #ffffff;
  --color-surface-alt:    #f6f8f8;
  --color-surface-dark:   #252525;
  --color-border:         #e5e7e7;
  --color-text:           #16282b;
  --color-text-muted:     #5f6c6e;
  --color-on-dark:        #ffffff;
  --color-on-dark-muted:  rgba(255, 255, 255, 0.75);

  /* ---- Feedback ---- */
  --color-success:        #1f7a4d;
  --color-error:          #b3261e;

  /* ---- Typography ---- */
  --font-sans: 'Space Grotesk', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Fluid type scale (min → max via viewport) */
  --fs-300: clamp(0.80rem, 0.76rem + 0.20vw, 0.90rem);
  --fs-400: clamp(0.95rem, 0.90rem + 0.25vw, 1.10rem);
  --fs-500: clamp(1.15rem, 1.05rem + 0.50vw, 1.40rem);
  --fs-600: clamp(1.45rem, 1.20rem + 1.10vw, 2.10rem);
  --fs-700: clamp(2.00rem, 1.50rem + 2.20vw, 3.25rem);
  --fs-900: clamp(2.75rem, 1.80rem + 4.60vw, 5.50rem);

  --lh-tight: 1.15;
  --lh-snug:  1.35;
  --lh-base:  1.6;

  /* ---- Spacing scale ---- */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 2.5rem;
  --space-6: 3rem;
  --space-8: 4rem;

  /* ---- Radii ---- */
  --radius-sm: 8px;
  --radius:    12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  /* ---- Shadows (tinted with brand) ---- */
  --shadow-sm: 0 1px 2px rgba(2, 45, 51, 0.06), 0 1px 3px rgba(2, 45, 51, 0.08);
  --shadow:    0 6px 24px rgba(2, 45, 51, 0.10);
  --shadow-lg: 0 16px 48px rgba(2, 45, 51, 0.18);

  /* ---- Motion ---- */
  --transition-fast: 0.15s ease;
  --transition:      0.25s cubic-bezier(0.4, 0, 0.2, 1);

  /* ---- Layout ---- */
  --header-h: 4rem;          /* top account bar height */
  --content-max: 1200px;
}

/* ---- Modern, predictable box model ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

/* Don't let anchored content hide under the fixed top bar */
:target {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-400);
  line-height: var(--lh-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Accessible focus ring for keyboard users */
:focus-visible {
  outline: 3px solid var(--color-primary-hover);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Subtle, reusable entrance animation */
@keyframes vr-rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}