/* ==========================================================================
   forged-kit — forged.css
   Shared brand layer for Arath Industries "Forged Tools" static sites.
   Upstream source of truth: portfolio-website (arath.site) —
   src/app/globals.css, src/app/forged/tools/page.tsx,
   src/components/Header.tsx, src/components/Footer.tsx.
   Self-contained: no build step, no external requests, no webfont loads.
   Non-invasive: nothing here restyles bare elements outside .fk-* scope.
   The site (and this kit) is dark-only.
   ========================================================================== */

:root {
  /* --- Color: backgrounds --- */
  --fk-bg: #030201;                       /* page background (site body) */
  --fk-surface: #090706;                  /* raised surface / header band */
  --fk-card-bg: rgba(13, 11, 10, 0.6);    /* card background */
  --fk-card-bg-tint: rgba(255, 136, 0, 0.02); /* forged-tools card tint */

  /* --- Color: text --- */
  --fk-text: #e0e0e0;                     /* primary text */
  --fk-text-dim: #9ca3af;                 /* secondary text (site gray-400) */
  --fk-text-faint: rgba(255, 255, 255, 0.46); /* de-emphasized nav text;
    alpha floor: 4.63:1 over the header band at rest (WCAG 4.5:1 at 13px;
    content scrolled under the translucent band can composite lower) */

  /* --- Color: accent (neon orange) --- */
  --fk-accent: #FF8800;
  --fk-accent-deep: #994400;
  --fk-accent-rgb: 255, 136, 0;           /* for rgba() composition */
  --fk-accent-dim: rgba(255, 136, 0, 0.73);  /* chip text;
    alpha floor: >=4.55:1 over every dark backdrop chips ship on
    (--fk-chip-bg on page, .fk-card, card tint, #0d0b0a panels;
    WCAG 4.5:1 at 12px) */
  --fk-accent-faint: rgba(255, 136, 0, 0.71); /* footer / maker's-mark text;
    alpha floor: 4.59:1 over --fk-surface, 4.64:1 over --fk-bg
    (WCAG 4.5:1 at 13px) */

  /* --- Borders --- */
  --fk-border-neutral: rgba(255, 255, 255, 0.06); /* resting card border */
  --fk-border-faint: rgba(255, 136, 0, 0.08);     /* header/footer hairlines */
  --fk-border-soft: rgba(255, 136, 0, 0.12);      /* forged-tools card border */
  --fk-border-strong: rgba(255, 136, 0, 0.35);    /* hover border */

  /* --- Fills --- */
  --fk-chip-bg: rgba(255, 136, 0, 0.08);
  --fk-btn-filled-bg: rgba(255, 136, 0, 0.2);
  --fk-btn-filled-bg-hover: rgba(255, 136, 0, 0.35);
  --fk-btn-bg-hover: rgba(255, 136, 0, 0.15);

  /* --- Typography (web-safe fallbacks; kit loads no webfonts) --- */
  --fk-font-sans: Inter, system-ui, -apple-system, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --fk-font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo,
    Consolas, "Liberation Mono", monospace;

  /* --- Radii --- */
  --fk-radius-sm: 0.25rem;                /* chips */
  --fk-radius-btn: 0.375rem;              /* buttons */
  --fk-radius-card: 0.5rem;               /* cards */

  /* --- Glow shadows --- */
  --fk-glow-btn: 0 0 5px rgba(255, 136, 0, 0.2),
    inset 0 0 5px rgba(255, 136, 0, 0.05);
  --fk-glow-btn-hover: 0 0 10px rgba(255, 136, 0, 0.4),
    0 0 30px rgba(255, 136, 0, 0.15), inset 0 0 10px rgba(255, 136, 0, 0.1);
  --fk-glow-btn-filled: 0 0 8px rgba(255, 136, 0, 0.3),
    inset 0 0 8px rgba(255, 136, 0, 0.1);
  --fk-glow-btn-filled-hover: 0 0 15px rgba(255, 136, 0, 0.5),
    0 0 40px rgba(255, 136, 0, 0.2), inset 0 0 15px rgba(255, 136, 0, 0.15);
  --fk-glow-card-hover: 0 0 15px rgba(255, 136, 0, 0.06),
    inset 0 0 30px rgba(255, 136, 0, 0.02);
  --fk-glow-divider: 0 0 8px rgba(255, 136, 0, 0.15),
    0 0 20px rgba(255, 136, 0, 0.05);
  --fk-glow-text: 0 0 7px rgba(255, 136, 0, 0.6),
    0 0 20px rgba(255, 136, 0, 0.3), 0 0 40px rgba(255, 136, 0, 0.15);

  /* --- Spacing rhythm --- */
  --fk-container-max: 64rem;              /* site max-w-3xl..5xl range */
  --fk-pad-x: 1rem;                       /* container side padding */
  --fk-card-pad: 1.5rem;                  /* card padding (site p-6) */
  --fk-gap: 1.5rem;                       /* card-to-card gap (space-y-6) */
}

/* --------------------------------------------------------------------------
   .fk-page — base canvas. Apply to <body> (or a wrapper). Sets background,
   text color, and the sans stack. Does not touch child element defaults.
   -------------------------------------------------------------------------- */
.fk-page {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--fk-bg);
  color: var(--fk-text);
  font-family: var(--fk-font-sans);
}

/* --------------------------------------------------------------------------
   .fk-header — slim top band. Markup:
   <header class="fk-header">
     <span class="fk-header-title">Tool Name</span>
     <a class="fk-header-link" href="https://www.arath.site/forged/tools">Forged Tools</a>
   </header>
   -------------------------------------------------------------------------- */
.fk-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 3rem;
  padding: 0 var(--fk-pad-x);
  background: rgba(9, 7, 6, 0.8);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-bottom: 1px solid var(--fk-border-faint);
  font-family: var(--fk-font-mono);
}

.fk-header-title {
  font-weight: 700;
  font-size: 1rem;
  color: var(--fk-accent);
  text-shadow: var(--fk-glow-text);
  text-decoration: none;
}

.fk-header-link {
  font-size: 0.8125rem;
  color: var(--fk-text-faint);
  text-decoration: none;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

.fk-header-link:hover {
  color: var(--fk-accent);
  text-shadow: 0 0 8px rgba(var(--fk-accent-rgb), 0.3);
}

/* --------------------------------------------------------------------------
   .fk-card — content panel with neon hover border.
   -------------------------------------------------------------------------- */
.fk-card {
  padding: var(--fk-card-pad);
  background: var(--fk-card-bg);
  border: 1px solid var(--fk-border-soft);
  border-radius: var(--fk-radius-card);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.fk-card:hover {
  border-color: var(--fk-border-strong);
  box-shadow: var(--fk-glow-card-hover);
}

/* --------------------------------------------------------------------------
   .fk-chip — small mono tag. .fk-chip-preview — status variant
   ("early preview"); same palette as tags on /forged/tools, plus a
   hairline accent border to read as a status rather than a tag.
   -------------------------------------------------------------------------- */
.fk-chip {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  font-family: var(--fk-font-mono);
  font-size: 0.75rem;
  line-height: 1.4;
  border-radius: var(--fk-radius-sm);
  background: var(--fk-chip-bg);
  color: var(--fk-accent-dim);
}

.fk-chip-preview {
  border: 1px solid var(--fk-border-soft);
}

/* --------------------------------------------------------------------------
   .fk-btn / .fk-btn-filled — the site's neon-btn / neon-btn-filled.
   Work on <a> and <button>.
   -------------------------------------------------------------------------- */
.fk-btn,
.fk-btn-filled {
  display: inline-block;
  padding: 0.5rem 1.5rem;
  font-family: var(--fk-font-mono);
  font-size: 0.875rem;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  border-radius: var(--fk-radius-btn);
  transition: all 0.2s ease;
}

.fk-btn {
  border: 1px solid var(--fk-accent);
  color: var(--fk-accent);
  background: transparent;
  box-shadow: var(--fk-glow-btn);
}

.fk-btn:hover {
  background: var(--fk-btn-bg-hover);
  box-shadow: var(--fk-glow-btn-hover);
}

.fk-btn-filled {
  border: 1px solid var(--fk-accent);
  color: #fff;
  background: var(--fk-btn-filled-bg);
  box-shadow: var(--fk-glow-btn-filled);
}

.fk-btn-filled:hover {
  background: var(--fk-btn-filled-bg-hover);
  box-shadow: var(--fk-glow-btn-filled-hover);
}

/* --------------------------------------------------------------------------
   .fk-footer — maker's mark. Markup:
   <footer class="fk-footer">
     <a href="https://www.arath.site">A Forged Tool &middot; &copy; Arath Industries</a>
   </footer>
   Gradient hairline + glow reproduces the site footer divider.
   -------------------------------------------------------------------------- */
.fk-footer {
  margin-top: auto;
  padding: 1.25rem var(--fk-pad-x);
  text-align: center;
  font-family: var(--fk-font-mono);
  font-size: 0.8125rem;
  position: relative;
}

.fk-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent,
    rgba(255, 136, 0, 0.3) 30%, rgba(255, 136, 0, 0.3) 70%, transparent);
  box-shadow: var(--fk-glow-divider);
}

.fk-footer a {
  color: var(--fk-accent-faint);
  text-decoration: none;
  transition: color 0.2s ease, text-shadow 0.2s ease;
}

.fk-footer a:hover {
  color: var(--fk-accent);
  text-shadow: 0 0 8px rgba(var(--fk-accent-rgb), 0.3);
}