/* ============================================================
   CSA Pipeline Visualizer — styles.css
   Modeled after csa-dashboard visual language
   ============================================================ */

:root {
  --bg:           #0f1117;
  --surface:      #1a1d27;
  --surface2:     #22263a;
  --surface3:     #2a2f47;
  --border:       rgba(255,255,255,0.07);
  --border-mid:   rgba(255,255,255,0.11);
  --border-bright:rgba(255,255,255,0.18);
  --text:         #f0f0f5;
  --text-sub:     #9498b0;
  --text-muted:   #5a5e78;

  --blue:   #60a5fa; --blue-rgb:   96,165,250;
  --teal:   #2dd4bf; --teal-rgb:   45,212,191;
  --purple: #a78bfa; --purple-rgb: 167,139,250;
  --gray:   #6b7280; --gray-rgb:   107,114,128;
  --red:    #f87171; --red-rgb:    248,113,113;
  --amber:  #fbbf24; --amber-rgb:  251,191,36;
  --green:  #34d399; --green-rgb:  52,211,153;

  --stage-w: 560px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Header ─────────────────────────────────────────────────────────────────── */
#header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15,17,23,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-mid);
  padding: 16px 32px 14px;
}

#header h1 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

#header p {
  font-size: 12px;
  color: var(--text-muted);
}

/* ── View toggle ─────────────────────────────────────────────────────────────── */
#view-toggle {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.view-btn {
  padding: 6px 18px;
  border-radius: 6px;
  border: 1px solid var(--border-mid);
  background: var(--surface);
  color: var(--text-sub);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  letter-spacing: 0.02em;
}

.view-btn:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border-bright);
}

.view-btn.active {
  background: var(--surface3);
  color: var(--text);
  border-color: var(--border-bright);
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06);
}

.view-btn[data-view="current"].active  { color: var(--red);    border-color: rgba(var(--red-rgb),0.5);    background: rgba(var(--red-rgb),0.07);    }
.view-btn[data-view="ideal"].active    { color: var(--green);  border-color: rgba(var(--green-rgb),0.5);  background: rgba(var(--green-rgb),0.06);  }
.view-btn[data-view="delta"].active    { color: var(--amber);  border-color: rgba(var(--amber-rgb),0.5);  background: rgba(var(--amber-rgb),0.06);  }

/* ── Main content area ───────────────────────────────────────────────────────── */
#main {
  padding: 32px 32px 60px;
  max-width: 1400px;
  margin: 0 auto;
}

/* ── SVG diagram container ───────────────────────────────────────────────────── */
.svg-view {
  width: 100%;
  overflow-x: auto;
}

.svg-view svg {
  min-width: 860px;
  display: block;
}

/* ── Legend ──────────────────────────────────────────────────────────────────── */
#legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--text-sub);
}

.legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* ── Pipeline layout ─────────────────────────────────────────────────────────── */
#pipeline-wrap {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}

.stages-col {
  flex: 0 0 var(--stage-w);
  display: flex;
  flex-direction: column;
}

.annots-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-top: 4px;
}

/* ── Stage card ──────────────────────────────────────────────────────────────── */
.stage-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stage {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-mid);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.stage-bar {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  border-radius: 10px 0 0 10px;
}

.stage-inner {
  padding: 13px 15px 13px 20px;
}

.stage-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 7px;
}

.stage-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10.5px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
  color: #0f1117;
}

.stage-title-group { flex: 1; }

.stage-title {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.3;
}

.stage-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
  font-style: italic;
}

.model-tag {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
  border: 1px solid transparent;
}

.stage-details {
  margin-top: 5px;
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stage-detail {
  font-size: 11.5px;
  color: var(--text-sub);
  padding-left: 10px;
  position: relative;
  line-height: 1.55;
}

.stage-detail::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

.stage-detail.warn {
  color: var(--red);
}

.stage-detail.good {
  color: var(--green);
}

/* ── Connector ───────────────────────────────────────────────────────────────── */
.connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px 0;
}

.connector-line {
  width: 2px;
  height: 14px;
  background: linear-gradient(to bottom, var(--border-mid), rgba(255,255,255,0.2));
}

.connector-arrow {
  width: 0; height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid rgba(255,255,255,0.22);
}

/* ── Annotation cards (right column) ─────────────────────────────────────────── */
.annot-slot {
  /* matches height of corresponding stage-wrap including connector */
}

.annot-spacer {
  visibility: hidden;
  pointer-events: none;
}

.annot {
  background: rgba(var(--red-rgb),0.05);
  border: 1px solid rgba(var(--red-rgb),0.22);
  border-radius: 8px;
  padding: 11px 13px;
  margin-bottom: 0;
}

.annot-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--red);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.annot-title::before { content: "⚠"; font-size: 12px; }

.annot-body {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.annot-line {
  font-size: 11.5px;
  color: rgba(var(--red-rgb),0.8);
  padding-left: 10px;
  position: relative;
  line-height: 1.5;
}

.annot-line::before {
  content: "→";
  position: absolute;
  left: 0;
  color: rgba(var(--red-rgb),0.4);
  font-size: 10px;
  top: 3px;
}

/* ── Ideal view — note cards ──────────────────────────────────────────────────── */
.note-missing {
  background: rgba(var(--amber-rgb),0.05);
  border-color: rgba(var(--amber-rgb),0.25);
}
.note-missing .annot-title { color: var(--amber); }
.note-missing .annot-title::before { content: "✗"; }
.note-missing .annot-line { color: rgba(var(--amber-rgb),0.85); }
.note-missing .annot-line::before { color: rgba(var(--amber-rgb),0.4); }

.note-refactor {
  background: rgba(var(--blue-rgb),0.05);
  border-color: rgba(var(--blue-rgb),0.22);
}
.note-refactor .annot-title { color: var(--blue); }
.note-refactor .annot-title::before { content: "↻"; }
.note-refactor .annot-line { color: rgba(var(--blue-rgb),0.85); }
.note-refactor .annot-line::before { color: rgba(var(--blue-rgb),0.4); }

/* ── Color helpers ───────────────────────────────────────────────────────────── */
.color-blue   { color: var(--blue);   }
.color-teal   { color: var(--teal);   }
.color-purple { color: var(--purple); }
.color-gray   { color: var(--gray);   }
.color-green  { color: var(--green);  }
.color-amber  { color: var(--amber);  }
.color-red    { color: var(--red);    }

.bg-blue   { background: rgba(var(--blue-rgb),0.08);   border-color: rgba(var(--blue-rgb),0.18);   }
.bg-teal   { background: rgba(var(--teal-rgb),0.07);   border-color: rgba(var(--teal-rgb),0.18);   }
.bg-purple { background: rgba(var(--purple-rgb),0.07); border-color: rgba(var(--purple-rgb),0.18); }
.bg-gray   { background: rgba(var(--gray-rgb),0.08);   border-color: rgba(var(--gray-rgb),0.18);   }
.bg-green  { background: rgba(var(--green-rgb),0.06);  border-color: rgba(var(--green-rgb),0.18);  }
.bg-amber  { background: rgba(var(--amber-rgb),0.06);  border-color: rgba(var(--amber-rgb),0.18);  }

.bar-blue   { background: var(--blue);   }
.bar-teal   { background: var(--teal);   }
.bar-purple { background: var(--purple); }
.bar-gray   { background: var(--gray);   }
.bar-green  { background: var(--green);  }
.bar-amber  { background: var(--amber);  }

.num-blue   { background: var(--blue);   }
.num-teal   { background: var(--teal);   }
.num-purple { background: var(--purple); }
.num-gray   { background: var(--gray);   color: #fff; }
.num-green  { background: var(--green);  }
.num-amber  { background: var(--amber);  }

.tag-teal   { background: rgba(var(--teal-rgb),0.12);   color: var(--teal);   border-color: rgba(var(--teal-rgb),0.3);   }
.tag-purple { background: rgba(var(--purple-rgb),0.12); color: var(--purple); border-color: rgba(var(--purple-rgb),0.3); }
.tag-gray   { background: rgba(var(--gray-rgb),0.15);   color: #9ca3af;       border-color: rgba(var(--gray-rgb),0.3);   }

/* ── Delta view ──────────────────────────────────────────────────────────────── */
#delta-view {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.delta-card {
  border-radius: 10px;
  border: 1px solid;
  overflow: hidden;
}

.delta-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.delta-status {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 3px 9px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}

.delta-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.delta-col {
  padding: 12px 16px;
}

.delta-col + .delta-col {
  border-left: 1px solid rgba(255,255,255,0.06);
}

.delta-col-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.delta-stage-name {
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 4px;
}

.delta-change-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: 4px;
}

.delta-change {
  font-size: 11.5px;
  color: var(--text-sub);
  padding-left: 12px;
  position: relative;
  line-height: 1.5;
}

.delta-change::before {
  content: "→";
  position: absolute;
  left: 0;
  font-size: 10px;
  top: 3px;
}

.delta-priority {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Status: missing */
.delta-card.status-missing {
  background: rgba(var(--amber-rgb),0.04);
  border-color: rgba(var(--amber-rgb),0.2);
}
.delta-card.status-missing .delta-header { background: rgba(var(--amber-rgb),0.06); }
.delta-card.status-missing .delta-status { background: rgba(var(--amber-rgb),0.15); color: var(--amber); }
.delta-card.status-missing .delta-stage-name { color: var(--amber); }
.delta-card.status-missing .delta-change::before { color: rgba(var(--amber-rgb),0.5); }

/* Status: refactor */
.delta-card.status-refactor {
  background: rgba(var(--blue-rgb),0.04);
  border-color: rgba(var(--blue-rgb),0.18);
}
.delta-card.status-refactor .delta-header { background: rgba(var(--blue-rgb),0.06); }
.delta-card.status-refactor .delta-status { background: rgba(var(--blue-rgb),0.15); color: var(--blue); }
.delta-card.status-refactor .delta-stage-name { color: var(--blue); }
.delta-card.status-refactor .delta-change::before { color: rgba(var(--blue-rgb),0.5); }

/* Status: fix */
.delta-card.status-fix {
  background: rgba(var(--red-rgb),0.04);
  border-color: rgba(var(--red-rgb),0.2);
}
.delta-card.status-fix .delta-header { background: rgba(var(--red-rgb),0.06); }
.delta-card.status-fix .delta-status { background: rgba(var(--red-rgb),0.15); color: var(--red); }
.delta-card.status-fix .delta-stage-name { color: var(--red); }
.delta-card.status-fix .delta-change::before { color: rgba(var(--red-rgb),0.5); }

/* Status: keep */
.delta-card.status-keep {
  background: rgba(var(--green-rgb),0.03);
  border-color: rgba(var(--green-rgb),0.15);
}
.delta-card.status-keep .delta-header { background: rgba(var(--green-rgb),0.05); }
.delta-card.status-keep .delta-status { background: rgba(var(--green-rgb),0.12); color: var(--green); }
.delta-card.status-keep .delta-stage-name { color: var(--green); }
.delta-card.status-keep .delta-change::before { color: rgba(var(--green-rgb),0.4); }

/* ── Footer ──────────────────────────────────────────────────────────────────── */
#footer {
  padding: 16px 32px;
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ── Transitions ─────────────────────────────────────────────────────────────── */
.view-section {
  transition: opacity 0.15s ease;
}