/* ================================================================
   ReliToolbox — Shared Stylesheet
   Matches ChemCalc (chemcalc.cn) design language
   ================================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --pri:        #0d9488;
  --pri-light:  #ccfbf1;
  --pri-dark:   #115e59;
  --bg:         #f8fafb;
  --card:       #ffffff;
  --border:     #e5e7eb;
  --border-lt:  #f3f4f6;
  --text:       #1f2937;
  --text-sec:   #6b7280;
  --text-muted: #9ca3af;
  --danger:     #dc2626;
  --warning:    #d97706;
  --success:    #059669;
  --header-bg:  linear-gradient(135deg, #1e3a5f 0%, #0f766e 100%);
  --radius:     10px;
  --radius-sm:  6px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
               "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

/* ---- Header ---- */
.app-header {
  background: var(--header-bg);
  padding: 20px 16px 16px;
  color: #fff;
}
.app-header h1 { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; margin: 0; }
.app-header p  { margin: 4px 0 10px; font-size: 13px; opacity: 0.85; }

.lang-bar { display: flex; gap: 6px; }
.lang-btn {
  padding: 4px 12px; border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.4);
  background: transparent; color: #fff;
  font-size: 12px; font-weight: 600; cursor: pointer;
}
.lang-btn.active { background: rgba(255,255,255,0.25); }

/* ---- Navigation breadcrumb ---- */
.breadcrumb {
  font-size: 12px; color: var(--text-muted);
  padding: 10px 0 4px;
  display: flex; align-items: center; gap: 6px;
}
.breadcrumb a { color: var(--pri); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* ---- Layout ---- */
.container { max-width: 820px; margin: 0 auto; padding: 12px 14px 48px; }

/* ---- Cards ---- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 16px;
  margin-bottom: 12px;
}
.card-title {
  font-size: 13px; font-weight: 700;
  margin-bottom: 10px; color: var(--text);
}

/* ---- Grid helpers ---- */
.g2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.g3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.g4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.g-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap: 10px; }
.g-kpi  { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px,1fr)); gap: 8px; }

/* ---- Forms ---- */
label.lbl {
  font-size: 12px; color: var(--text-sec);
  display: block; margin-bottom: 3px; font-weight: 500;
}
input, select, textarea {
  width: 100%; padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff; color: var(--text);
  font-size: 13px; outline: none;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { border-color: var(--pri); }
textarea { font-family: monospace; resize: vertical; line-height: 1.5; }

/* ---- Buttons ---- */
.btn {
  padding: 8px 16px; border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--card); color: var(--text);
  font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all 0.15s;
  white-space: nowrap; font-family: inherit;
}
.btn:hover { background: var(--bg); }
.btn.active, .btn-pri {
  background: var(--pri); color: #fff; border-color: var(--pri);
}
.btn-full { display: block; width: 100%; padding: 10px; border-radius: 10px; font-size: 14px; }
.btn-sm { padding: 5px 10px; font-size: 11px; }

/* ---- KPI tiles ---- */
.kpi {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 12px;
  text-align: center;
}
.kpi-label { font-size: 10px; color: var(--text-sec); font-weight: 600; }
.kpi-val   { font-size: 17px; font-weight: 700; font-family: monospace; margin: 2px 0; }
.kpi-val.good { color: var(--success); }
.kpi-val.warn { color: var(--warning); }
.kpi-val.bad  { color: var(--danger); }

/* ---- Module cards (home grid) ---- */
.mod-card {
  background: var(--card); border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 14px 12px; position: relative;
  transition: box-shadow 0.2s;
}
.mod-card.live { cursor: pointer; }
.mod-card.live:hover { box-shadow: 0 4px 12px rgba(13,148,136,0.15); }
.mod-card.soon { opacity: 0.55; }
.mod-icon  { font-size: 24px; margin-bottom: 6px; }
.mod-name  { font-size: 14px; font-weight: 700; }
.mod-zh    { font-size: 11px; color: var(--text-sec); margin-top: 2px; line-height: 1.4; }
.mod-desc  { font-size: 10px; color: var(--text-muted); margin-top: 4px; }
.mod-badge {
  position: absolute; top: 8px; right: 8px;
  font-size: 9px; padding: 2px 6px; border-radius: 8px; font-weight: 600;
}
.mod-badge.live { background: var(--pri-light); color: var(--pri-dark); }
.mod-badge.soon { background: #fef3c7; color: #92400e; }

/* ---- Tab bar ---- */
.tab-bar { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 12px; }
.tab {
  padding: 6px 14px; border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--card); color: var(--text-sec);
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: all 0.15s;
}
.tab.active { background: var(--pri); color: #fff; border-color: var(--pri); }

/* ---- Table ---- */
table { width: 100%; border-collapse: collapse; font-size: 11px; }
th {
  text-align: left; padding: 6px 8px;
  color: var(--text-sec); font-weight: 600; font-size: 10px;
  border-bottom: 2px solid var(--border);
}
td { padding: 5px 8px; border-bottom: 1px solid var(--border-lt); }
tr.best td { background: #f0fdfa; }

/* ---- Alert / error ---- */
.alert-err {
  padding: 8px 12px; border-radius: 8px;
  background: #fef2f2; border: 1px solid #fecaca;
  color: var(--danger); font-size: 12px; margin-bottom: 10px;
}

/* ---- Divider ---- */
hr { border: none; border-top: 1px solid var(--border-lt); margin: 12px 0; }

/* ---- Footer ---- */
.app-footer {
  text-align: center; padding: 14px;
  font-size: 11px; color: var(--text-muted);
  border-top: 1px solid var(--border);
}
.app-footer a { color: var(--pri); text-decoration: none; }

/* ---- Unit block (RAM module) ---- */
.unit-block {
  border-left: 3px solid var(--pri);
  padding: 10px 12px; margin-bottom: 8px;
  background: var(--bg); border-radius: 0 8px 8px 0;
}
.unit-block.asu { border-color: #1D9E75; }
.unit-block.gas { border-color: #BA7517; }
.unit-block.pur { border-color: #7F77DD; }

/* ---- Progress bar ---- */
.prog-track { height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; margin-top: 6px; }
.prog-fill  { height: 100%; background: var(--pri); transition: width 0.3s; }

/* ---- Topology ---- */
.topo { display: flex; align-items: center; gap: 6px; overflow-x: auto; padding: 12px 0; }
.topo-node {
  border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 12px; text-align: center; min-width: 90px;
  background: var(--card); flex-shrink: 0;
}
.io-node {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; font-weight: 700; flex-shrink: 0;
}
.io-in  { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.io-out { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.topo-arrow { color: var(--text-muted); font-size: 18px; flex-shrink: 0; }

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .g2, .g3, .g4 { grid-template-columns: 1fr 1fr; }
  .g4 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 420px) {
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
}