/* ─── Rubix design tokens ──────────────────────────────────────────────── */
:root {
  --rubix-navy: #012E64;
  --rubix-navy-dark: #001a3d;
  --rubix-sage: #3F5F4A;
  --rubix-sage-dark: #2c4434;
  --rubix-ochre: #B9862A;
  --rubix-ink: #1a1f24;
  --rubix-ink-soft: #4a5560;
  --rubix-paper: #fafaf7;
  --rubix-paper-soft: #f3f2ed;
  --rubix-line: #e0ddd4;
  --rubix-line-strong: #b8b3a4;
  --rubix-danger: #a8392b;
  --rubix-success: #3d6b4a;

  --rubix-radius: 4px;
  --rubix-radius-lg: 6px;
  --rubix-shadow-sm: 0 1px 2px rgba(1, 46, 100, 0.06);
  --rubix-shadow-md: 0 2px 8px rgba(1, 46, 100, 0.08);

  --rubix-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --rubix-font-display: 'Inter', Georgia, serif;
}

/* ─── Reset and base ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: var(--rubix-font-body);
  font-size: 15px;
  line-height: 1.55;
  color: var(--rubix-ink);
  background: var(--rubix-paper);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: var(--rubix-font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em 0;
  color: var(--rubix-navy);
}
h1 { font-size: 1.75rem; letter-spacing: -0.02em; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1rem; }
p { margin: 0 0 1em 0; }
a { color: var(--rubix-navy); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--rubix-sage); }
code { font-family: 'SF Mono', 'Monaco', 'Consolas', monospace; font-size: 0.875em; background: var(--rubix-paper-soft); padding: 1px 5px; border-radius: 3px; }

/* ─── Layout ──────────────────────────────────────────────────────────── */
.rubix-header {
  background: var(--rubix-navy);
  color: white;
  padding: 24px 0;
  border-bottom: 3px solid var(--rubix-ochre);
}
.rubix-header h1 { color: white; margin: 0 0 4px 0; }
.rubix-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.rubix-subtitle {
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
  margin: 0;
  letter-spacing: 0.02em;
}
.rubix-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px;
}
.rubix-footer {
  border-top: 1px solid var(--rubix-line);
  padding: 24px;
  text-align: center;
  color: var(--rubix-ink-soft);
  font-size: 0.85rem;
  margin-top: 60px;
}

/* ─── Tile grid (used on landing page and inside sections) ────────────── */
.rubix-tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.rubix-tile {
  display: block;
  background: white;
  border: 1px solid var(--rubix-line);
  border-radius: var(--rubix-radius-lg);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
  box-shadow: var(--rubix-shadow-sm);
}
.rubix-tile:hover {
  border-color: var(--rubix-sage);
  box-shadow: var(--rubix-shadow-md);
  transform: translateY(-1px);
  color: inherit;
}
.rubix-tile h2 { font-size: 1.1rem; margin-bottom: 8px; }
.rubix-tile p { color: var(--rubix-ink-soft); font-size: 0.9rem; margin-bottom: 12px; }
.rubix-tile-cta {
  color: var(--rubix-sage);
  font-weight: 600;
  font-size: 0.9rem;
}
.rubix-tile-disabled {
  background: var(--rubix-paper-soft);
  cursor: not-allowed;
  opacity: 0.65;
}
.rubix-tile-disabled:hover { transform: none; box-shadow: var(--rubix-shadow-sm); border-color: var(--rubix-line); }

/* ─── Forms and inputs ────────────────────────────────────────────────── */
input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
}
input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--rubix-line-strong);
  border-radius: var(--rubix-radius);
  background: white;
  color: var(--rubix-ink);
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--rubix-navy);
  box-shadow: 0 0 0 3px rgba(1, 46, 100, 0.08);
}
textarea { resize: vertical; min-height: 100px; line-height: 1.5; font-family: inherit; }
label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--rubix-ink-soft);
  margin-bottom: 4px;
  letter-spacing: 0.01em;
}
.rubix-field { margin-bottom: 16px; }
.rubix-field-row { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
.rubix-field-row-3 { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }

/* ─── Buttons ─────────────────────────────────────────────────────────── */
.rubix-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: var(--rubix-radius);
  background: var(--rubix-sage);
  color: white;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  transition: background 0.15s;
  text-decoration: none;
}
.rubix-btn:hover { background: var(--rubix-sage-dark); color: white; text-decoration: none; }
.rubix-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.rubix-btn-primary { background: var(--rubix-navy); }
.rubix-btn-primary:hover { background: var(--rubix-navy-dark); }
.rubix-btn-secondary { background: white; color: var(--rubix-ink); border-color: var(--rubix-line-strong); }
.rubix-btn-secondary:hover { background: var(--rubix-paper-soft); color: var(--rubix-ink); border-color: var(--rubix-ink-soft); }
.rubix-btn-danger { background: var(--rubix-danger); }
.rubix-btn-danger:hover { background: #8a2e23; }

/* ─── Cards / panels ──────────────────────────────────────────────────── */
.rubix-card {
  background: white;
  border: 1px solid var(--rubix-line);
  border-radius: var(--rubix-radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--rubix-shadow-sm);
}
.rubix-card-title {
  font-size: 1rem;
  margin: 0 0 16px 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rubix-line);
  display: flex;
  align-items: center;
  gap: 8px;
}
.rubix-card-title-meta { margin-left: auto; font-size: 0.8rem; color: var(--rubix-ink-soft); font-weight: 400; }

/* ─── Status pills ────────────────────────────────────────────────────── */
.rubix-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.rubix-pill-warn { background: rgba(185, 134, 42, 0.15); color: var(--rubix-ochre); }
.rubix-pill-ok { background: rgba(61, 107, 74, 0.15); color: var(--rubix-success); }
.rubix-pill-err { background: rgba(168, 57, 43, 0.15); color: var(--rubix-danger); }
.rubix-pill-neutral { background: var(--rubix-paper-soft); color: var(--rubix-ink-soft); }

/* ─── Status banner ───────────────────────────────────────────────────── */
.rubix-banner {
  padding: 12px 16px;
  border-radius: var(--rubix-radius);
  margin-bottom: 16px;
  border: 1px solid;
  font-size: 0.9rem;
}
.rubix-banner-ok { background: rgba(61, 107, 74, 0.08); border-color: rgba(61, 107, 74, 0.3); color: var(--rubix-success); }
.rubix-banner-err { background: rgba(168, 57, 43, 0.08); border-color: rgba(168, 57, 43, 0.3); color: var(--rubix-danger); }
.rubix-banner-info { background: rgba(1, 46, 100, 0.05); border-color: rgba(1, 46, 100, 0.2); color: var(--rubix-navy); }

/* ─── Drop zone ───────────────────────────────────────────────────────── */
.rubix-dropzone {
  border: 2px dashed var(--rubix-line-strong);
  border-radius: var(--rubix-radius-lg);
  padding: 32px;
  text-align: center;
  color: var(--rubix-ink-soft);
  transition: border-color 0.15s, background 0.15s;
  cursor: pointer;
}
.rubix-dropzone:hover, .rubix-dropzone.is-dragover {
  border-color: var(--rubix-navy);
  background: rgba(1, 46, 100, 0.02);
  color: var(--rubix-navy);
}
.rubix-dropzone-files {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.rubix-dropzone-file {
  background: white;
  border: 1px solid var(--rubix-line);
  border-radius: var(--rubix-radius);
  padding: 4px 10px;
  font-size: 0.85rem;
  color: var(--rubix-ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.rubix-dropzone-file button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--rubix-ink-soft);
  font-size: 1.1em;
  line-height: 1;
  padding: 0 0 0 4px;
}

/* ─── Action bar ──────────────────────────────────────────────────────── */
.rubix-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  padding-top: 16px;
}
.rubix-actions-right { margin-left: auto; }

/* ─── Spinner ─────────────────────────────────────────────────────────── */
.rubix-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: rubix-spin 0.6s linear infinite;
}
@keyframes rubix-spin { to { transform: rotate(360deg); } }

/* ─── Helper text ─────────────────────────────────────────────────────── */
.rubix-hint { font-size: 0.8rem; color: var(--rubix-ink-soft); margin-top: 4px; }
.rubix-empty { color: var(--rubix-ink-soft); font-style: italic; padding: 12px 0; }

/* ─── History list ────────────────────────────────────────────────────── */
.rubix-history-list { list-style: none; padding: 0; margin: 0; }
.rubix-history-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--rubix-line);
  display: flex;
  align-items: center;
  gap: 12px;
}
.rubix-history-list li:last-child { border-bottom: none; }
.rubix-history-time { font-size: 0.8rem; color: var(--rubix-ink-soft); white-space: nowrap; }

/* ─── Page header (used on tool pages) ────────────────────────────────── */
.rubix-page-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rubix-line);
}
.rubix-page-header h1 { margin: 0; }
.rubix-back-link {
  font-size: 0.9rem;
  color: var(--rubix-ink-soft);
  text-decoration: none;
}
.rubix-back-link:hover { color: var(--rubix-navy); }