/* ════════════════════════════════════════
   syz-rodend components.css — cards, tables, callouts, chips, buttons
   ════════════════════════════════════════ */

/* ---------- Section header ---------- */
.syz-section-title-strip {
  display: flex; flex-direction: column; gap: 8px; margin-bottom: 32px;
  padding-bottom: 16px; border-bottom: 1px solid var(--border-hairline);
}
@media (min-width: 768px) { .syz-section-title-strip { flex-direction: row; justify-content: space-between; align-items: flex-end; } }
.syz-category-label {
  font-family: var(--font-mono); font-size: 12px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.8px; display: flex; align-items: center; gap: 6px;
}
.syz-category-label.blue { color: var(--accent-blue); }
.syz-category-label.green { color: var(--accent-emerald); }
.syz-category-label.amber { color: var(--accent-amber); }
.syz-section-h2 { font-family: var(--font-heading); font-size: 28px; font-weight: 800; color: var(--text-main); letter-spacing: -0.6px; }
.syz-section-desc { font-size: 14.5px; color: var(--text-muted); max-width: 620px; }

/* ---------- Filter bar (index pages) ---------- */
.syz-filter-bar { max-width: 1360px; margin: 32px auto 0 auto; padding: 0 24px; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.syz-filter-tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.syz-filter-btn {
  background: #FFFFFF; border: 1px solid var(--border-hairline); border-radius: 20px; padding: 6px 14px;
  font-family: var(--font-heading); font-size: 13px; font-weight: 600; color: var(--text-body);
  cursor: pointer; transition: all 0.15s;
}
.syz-filter-btn:hover { border-color: var(--border-medium); }
.syz-filter-btn.is-active { background: var(--accent-blue); color: #FFFFFF; border-color: var(--accent-blue); }
.syz-filter-btn.is-active.accent-emerald { background: var(--accent-emerald); border-color: var(--accent-emerald); }

/* ---------- Article / knowledge cards ---------- */
.syz-knowledge-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.syz-article-card {
  background: #FFFFFF; border: 1px solid var(--border-hairline); border-radius: var(--radius-lg);
  padding: 24px; box-shadow: var(--shadow-subtle);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1); display: flex; flex-direction: column;
  justify-content: space-between; position: relative;
}
.syz-article-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); border-color: var(--border-medium); }
.syz-article-card::after {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
  background: var(--accent-blue); border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.syz-article-card.is-motion-hardware::after { background: var(--accent-emerald); }
.syz-card-meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.syz-category-tag {
  font-family: var(--font-mono); font-size: 11px; font-weight: 600; color: var(--text-muted);
  background: var(--bg-subtle); border: 1px solid var(--border-hairline); padding: 2px 7px; border-radius: var(--radius-sm);
}
.syz-card-title { font-family: var(--font-heading); font-size: 18px; font-weight: 700; color: var(--text-main); line-height: 1.35; margin-bottom: 8px; }
.syz-card-summary { font-size: 13.5px; color: var(--text-body); line-height: 1.55; margin-bottom: 18px; }
.syz-specs-box { background: var(--bg-subtle); border: 1px solid var(--border-hairline); border-radius: var(--radius-sm); padding: 10px 12px; font-size: 12px; margin-bottom: 18px; display: flex; flex-direction: column; gap: 6px; }
.syz-spec-row { display: flex; justify-content: space-between; color: var(--text-muted); gap: 12px; }
.syz-spec-row strong { font-family: var(--font-mono); color: var(--text-main); font-weight: 600; text-align: right; }
.syz-card-footer { display: flex; justify-content: space-between; align-items: center; padding-top: 14px; border-top: 1px solid var(--border-hairline); font-size: 12.5px; }
.syz-time-tag { color: var(--text-muted); }
.syz-article-link { font-weight: 600; color: var(--accent-blue); }
.syz-article-card.is-motion-hardware .syz-article-link { color: var(--accent-emerald); }

/* ---------- Callouts ---------- */
.callout {
  background: #FFFFFF; border: 1px solid var(--border-hairline); border-left: 4px solid var(--accent-blue);
  border-radius: var(--radius-md); padding: 18px 20px; margin: 24px 0; font-size: 14.5px; box-shadow: var(--shadow-subtle);
}
.callout.tip { border-left-color: var(--accent-emerald); background: var(--accent-emerald-light); }
.callout.warning { border-left-color: var(--accent-vermilion); background: var(--accent-vermilion-light); }
.callout-title { font-family: var(--font-heading); font-weight: 700; color: var(--text-main); margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }

/* ---------- Tables ---------- */
.table-container { overflow-x: auto; margin: 28px 0; border: 1px solid var(--border-hairline); border-radius: var(--radius-lg); background: #FFFFFF; box-shadow: var(--shadow-subtle); }
.tech-table { width: 100%; border-collapse: collapse; font-size: 13.5px; text-align: left; }
.tech-table th { background: #F8FAFC; padding: 12px 16px; font-family: var(--font-heading); font-weight: 700; color: var(--text-main); border-bottom: 1px solid var(--border-hairline); white-space: nowrap; }
.tech-table td { padding: 12px 16px; border-bottom: 1px solid var(--border-hairline); color: var(--text-body); }
.tech-table tr:last-child td { border-bottom: none; }
.tech-table tr:hover td { background: #F8FAFC; }

/* ---------- Diagram box ---------- */
.diagram-box { background: #FFFFFF; border: 1px solid var(--border-hairline); border-radius: var(--radius-lg); padding: 24px; margin: 28px 0; text-align: center; box-shadow: var(--shadow-subtle); }
.diagram-caption { font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); margin-top: 12px; }

/* ---------- Formula card ---------- */
.formula-card { background: #F8FAFC; border: 1px solid var(--border-hairline); border-radius: var(--radius-md); padding: 18px 22px; font-family: var(--font-mono); font-size: 13.5px; color: var(--text-main); margin: 24px 0; }

/* ---------- Buttons ---------- */
.szr-btn { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-heading); font-size: 13.5px; font-weight: 700; padding: 10px 20px; border-radius: 24px; cursor: pointer; transition: all 0.15s; text-decoration: none; }
.szr-btn--primary { background: var(--accent-blue); color: #FFFFFF; border: 1px solid var(--accent-blue); }
.szr-btn--primary:hover { background: #1E40AF; color: #FFFFFF; }
.szr-btn--outline { background: #FFFFFF; color: var(--text-main); border: 1px solid var(--border-medium); }
.szr-btn--outline:hover { border-color: var(--accent-blue); color: var(--accent-blue); }

/* ---------- Calculators ---------- */
.calculator-frame { background: #FFFFFF; border: 1px solid var(--border-hairline); border-radius: var(--radius-xl); box-shadow: var(--shadow-card); padding: 36px; margin: 24px 0; }
.calc-pill-tabs { display: flex; gap: 8px; border-bottom: 1px solid var(--border-hairline); padding-bottom: 16px; margin-bottom: 28px; overflow-x: auto; }
.calc-pill-btn { font-family: var(--font-heading); font-size: 13.5px; font-weight: 600; color: var(--text-muted); background: #FFFFFF; border: 1px solid var(--border-hairline); padding: 8px 16px; border-radius: 20px; cursor: pointer; white-space: nowrap; transition: all 0.15s ease; }
.calc-pill-btn:hover { color: var(--text-main); border-color: var(--border-medium); }
.calc-pill-btn.is-active { background: var(--accent-blue); color: #FFFFFF; border-color: var(--accent-blue); box-shadow: 0 2px 6px rgba(29, 78, 216, 0.25); }
.calc-split-layout { display: grid; grid-template-columns: 1fr; gap: 32px; }
@media (min-width: 900px) { .calc-split-layout { grid-template-columns: 1fr 1fr; } }
.calc-input-col { display: flex; flex-direction: column; gap: 18px; }
.calc-field-group { display: flex; flex-direction: column; gap: 6px; }
.calc-field-label { font-size: 13px; font-weight: 600; color: var(--text-main); display: flex; justify-content: space-between; }
.calc-field-label .unit-text { font-family: var(--font-mono); font-weight: normal; color: var(--text-muted); font-size: 12px; }
.calc-field-help { font-size: 12px; color: var(--text-muted); line-height: 1.5; }
.field-input, .field-select { height: 42px; background: #FFFFFF; border: 1px solid var(--border-hairline); border-radius: var(--radius-md); padding: 0 14px; font-family: var(--font-mono); font-size: 14px; color: var(--text-main); width: 100%; }
.field-input:focus, .field-select:focus { outline: none; border-color: var(--accent-blue); }
.calc-output-col { background: var(--bg-subtle); border: 1px solid var(--border-hairline); border-radius: var(--radius-lg); padding: 28px; display: flex; flex-direction: column; justify-content: space-between; }
.result-caption { font-family: var(--font-mono); font-size: 12px; font-weight: 600; text-transform: uppercase; color: var(--text-muted); margin-bottom: 8px; }
.result-hero-num { font-family: var(--font-heading); font-size: 42px; font-weight: 800; color: var(--accent-blue); line-height: 1; margin-bottom: 8px; }
.result-subnote { font-size: 13.5px; color: var(--text-body); line-height: 1.5; }
.formula-reference-box { background: #FFFFFF; border: 1px solid var(--border-hairline); border-radius: var(--radius-md); padding: 14px; margin-top: 20px; font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); line-height: 1.6; }
.calc-disclaimer { background: var(--accent-amber-light); border: 1px solid #FDE9C8; border-radius: var(--radius-md); padding: 14px 18px; font-size: 13px; color: #7C4A03; line-height: 1.6; margin-bottom: 24px; }

/* ---------- Hero editorial badge ---------- */
.syz-hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #FFFFFF; border: 1px solid var(--border-hairline);
  padding: 4px 12px; border-radius: 20px; font-family: var(--font-mono);
  font-size: 12px; font-weight: 500; color: var(--text-muted);
  box-shadow: var(--shadow-subtle); margin-bottom: 20px;
}
.syz-hero-badge .status-dot { width: 7px; height: 7px; background: var(--accent-emerald); border-radius: 50%; }