/* Project RFX — Siemens iX product-quality experience */

/* ── Design tokens ───────────────────────────────────────────────────────── */
:root {
  --color-primary: #2563eb;
  --color-primary-hover: #3b82f6;
  --color-primary-subtle: rgba(37, 99, 235, 0.12);

  --color-bg-app: #0b0d10;
  --color-bg-1: #111318;
  --color-bg-2: #181b21;
  --color-bg-3: #1e2128;
  --color-bg-4: #23272e;

  /* Backward-compatible aliases for tests and existing markup */
  --bg-primary: var(--color-bg-app);
  --bg-secondary: var(--color-bg-1);
  --bg-tertiary: var(--color-bg-2);
  --bg-elevated: var(--color-bg-3);
  --bg-hover: var(--color-bg-4);

  --color-border-1: #2a2e36;
  --color-border-2: #3c414d;

  --color-text-1: #f0f1f3;
  --color-text-2: #a0a6b1;
  --color-text-3: #6b7280;

  /* Restrained status palette */
  --status-success: #4ade80;
  --status-success-bg: rgba(74, 222, 128, 0.10);
  --status-warning: #facc15;
  --status-warning-bg: rgba(250, 204, 21, 0.10);
  --status-danger: #f87171;
  --status-danger-bg: rgba(248, 113, 113, 0.10);
  --status-info: #60a5fa;
  --status-info-bg: rgba(96, 165, 250, 0.10);
  --status-neutral: #6b7280;
  --status-neutral-bg: rgba(107, 114, 128, 0.12);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --radius: 6px;
  --radius-sm: 4px;

  --topbar-height: 56px;
  --page-padding: var(--space-6);
}

@media (min-width: 1920px) { :root { --page-padding: var(--space-8); } }
@media (max-width: 1024px) { :root { --page-padding: var(--space-5); } }
@media (max-width: 768px) { :root { --page-padding: var(--space-4); } }
@media (max-width: 480px) { :root { --page-padding: var(--space-3); } }

/* ── Reset / base ────────────────────────────────────────────────────────── */
* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  background: var(--color-bg-app);
  color: var(--color-text-1);
  -webkit-font-smoothing: antialiased;
}

button, input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }

.hidden { display: none !important; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

/* ── App shell ───────────────────────────────────────────────────────────── */
#app-shell,
ix-basic-navigation,
.content-area {
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
}

#app-shell { display: block; }

.content-area {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── Topbar / application header ─────────────────────────────────────────── */
.ix-topbar {
  height: var(--topbar-height);
  border-bottom: 1px solid var(--color-border-1);
  background: var(--color-bg-app);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--page-padding);
  flex-shrink: 0;
  gap: var(--space-4);
}

.ix-topbar-left,
.ix-topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  min-width: 0;
}

.brand-slot {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.brand-logo {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-2);
  border: 1px solid var(--color-border-1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-2);
  font-weight: 600;
  font-size: 12px;
}

.brand-name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text-1);
}

#page-title {
  font-size: 14px;
  font-weight: 500;
  margin: 0;
  color: var(--color-text-2);
  line-height: 1.2;
}

/* ── Page container / layout contract ──────────────────────────────────── */
.page-container {
  flex: 1;
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  background: var(--color-bg-app);
}

.page {
  display: none;
  width: 100%;
  min-width: 0;
  padding: var(--page-padding);
}

.page.active { display: block; }

/* RFP workspace page fills remaining viewport */
#app-shell:not(.hidden) ~ #login-screen,
#app-shell:not(.hidden) {
  display: block;
}

#app-shell {
  position: fixed;
  inset: 0;
  z-index: 1;
}

#login-screen {
  position: fixed;
  inset: 0;
  z-index: 2;
}

#login-screen.hidden { display: none !important; }

#app-shell:not(.hidden) {
  z-index: 2;
}

#login-screen,
#app-shell {
  height: 100%;
}

#page-rfp.page.active {
  display: flex;
  flex-direction: column;
  height: calc(100% - var(--topbar-height));
  overflow: hidden;
  padding-bottom: 0;
}

/* ── Page header ─────────────────────────────────────────────────────────── */
.page-header-block { margin-bottom: var(--space-6); }
.page-header-block.with-action {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.page-header-block h1 { font-size: 20px; font-weight: 600; margin: 0 0 var(--space-1); letter-spacing: -0.01em; }
.page-description { color: var(--color-text-2); margin: 0; max-width: 70ch; }

/* ── RFP contextual header ─────────────────────────────────────────────── */
.rfp-context-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border-1);
  margin-bottom: var(--space-4);
}

.rfp-context-left { min-width: 0; }
.rfp-context-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 12px;
  color: var(--color-text-3);
  margin-bottom: var(--space-2);
}
.rfp-context-breadcrumb a { color: var(--color-text-2); }
.rfp-context-breadcrumb a:hover { color: var(--color-text-1); }
.rfp-context-title {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 var(--space-2);
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.rfp-context-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-5);
  font-size: 12px;
  color: var(--color-text-2);
}
.rfp-context-meta span { display: inline-flex; align-items: center; gap: var(--space-1); }
.rfp-context-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 36px;
  padding: 0 var(--space-4);
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 500;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, color 120ms ease;
  white-space: nowrap;
}
.btn-sm { height: 28px; padding: 0 var(--space-3); font-size: 12px; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-primary:disabled { opacity: 0.55; cursor: not-allowed; background: var(--color-primary); color: #fff; }
.btn-secondary { background: var(--color-bg-2); border-color: var(--color-border-1); color: var(--color-text-1); }
.btn-secondary:hover { background: var(--color-bg-3); border-color: var(--color-border-2); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--color-text-2); }
.btn-ghost:hover { color: var(--color-text-1); background: var(--color-bg-2); }
.btn-danger { background: transparent; border-color: transparent; color: var(--status-danger); }
.btn-danger:hover { background: var(--status-danger-bg); }
.btn-success { background: var(--status-success-bg); border-color: rgba(74,222,128,0.25); color: var(--status-success); }
.btn-success:hover { background: rgba(74,222,128,0.16); }
.btn-warning { background: var(--status-warning-bg); border-color: rgba(250,204,21,0.25); color: var(--status-warning); }
.btn-full { width: 100%; }

/* iX button overrides for focus */
ix-button { --margin: 0; }

/* ── Form fields ─────────────────────────────────────────────────────────── */
.field { display: flex; flex-direction: column; gap: var(--space-1); min-width: 0; }
.field-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-text-3);
}
.field-value { font-size: 13px; color: var(--color-text-1); word-break: break-word; min-width: 0; }
.field-value.muted { color: var(--color-text-3); }

.input, .select, .textarea {
  background: var(--color-bg-2);
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  color: var(--color-text-1);
  outline: none;
  width: 100%;
}
.input, .select { height: 36px; padding: 0 var(--space-3); }
.textarea { min-height: 80px; padding: var(--space-3); resize: vertical; line-height: 1.55; }
.input:focus, .select:focus, .textarea:focus { border-color: var(--color-border-2); box-shadow: 0 0 0 2px var(--color-primary-subtle); }
.input::placeholder, .textarea::placeholder { color: var(--color-text-3); }

.form-group { display: flex; flex-direction: column; gap: var(--space-1); margin-bottom: var(--space-3); }
.form-group label {
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-text-3);
}
.form-group input, .form-group textarea, .form-group select {
  background: var(--color-bg-2); border: 1px solid var(--color-border-1); border-radius: var(--radius);
  color: var(--color-text-1); padding: var(--space-2) var(--space-3); outline: none; width: 100%;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--color-border-2); box-shadow: 0 0 0 2px var(--color-primary-subtle); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }

/* ── Tables ───────────────────────────────────────────────────────────────── */
.table-container {
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  overflow: hidden;
  overflow-x: auto;
}
.data-table {
  width: 100%;
  min-width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th, .data-table td {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-1);
  vertical-align: middle;
  white-space: nowrap;
}
.data-table th {
  color: var(--color-text-3);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--color-bg-1);
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--color-bg-2); }
.data-table tbody tr.selected { background: var(--color-bg-3); }
.data-table td.wrap { white-space: normal; }

.cell-title { font-weight: 500; color: var(--color-text-1); }
.cell-meta { color: var(--color-text-3); font-size: 12px; }
.cell-right { text-align: right; }
.cell-progress { width: 180px; }
.cell-progress-text { font-size: 11px; color: var(--color-text-3); margin-top: var(--space-1); }

/* ── Status system ───────────────────────────────────────────────────────── */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  height: 20px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
  white-space: nowrap;
}
.status-pill::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.7;
}
.status-success { background: var(--status-success-bg); color: var(--status-success); border-color: rgba(74,222,128,0.20); }
.status-warning { background: var(--status-warning-bg); color: var(--status-warning); border-color: rgba(250,204,21,0.20); }
.status-danger { background: var(--status-danger-bg); color: var(--status-danger); border-color: rgba(248,113,113,0.20); }
.status-info { background: var(--status-info-bg); color: var(--status-info); border-color: rgba(96,165,250,0.20); }
.status-neutral { background: var(--status-neutral-bg); color: var(--color-text-2); border-color: var(--color-border-1); }

/* ── Progress ─────────────────────────────────────────────────────────────── */
.progress-bar { height: 4px; background: var(--color-bg-2); border-radius: 2px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--color-primary); border-radius: 2px; }
.progress-fill.success { background: var(--status-success); }
.progress-fill.warning { background: var(--status-warning); }
.progress-fill.danger { background: var(--status-danger); }
.progress-labels {
  display: flex; justify-content: space-between;
  font-size: 11px; color: var(--color-text-3); margin-top: var(--space-1);
}
.progress-label { font-size: 11px; color: var(--color-text-3); display: block; margin-top: var(--space-2); }
.progress-stack { display: flex; flex-direction: column; gap: var(--space-1); }

/* ── Metric cards ─────────────────────────────────────────────────────────── */
.metric-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.metric-card {
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  padding: var(--space-4);
  min-height: auto;
}
.metric-value { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: var(--space-1); }
.metric-label { font-size: 12px; color: var(--color-text-2); }

/* ── Sections / panels ─────────────────────────────────────────────────────── */
.section { margin-bottom: var(--space-8); }
.section-title {
  font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-text-3); margin: 0 0 var(--space-3);
}
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.panel {
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  overflow: hidden;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-1);
  background: var(--color-bg-2);
}
.panel-header h4 { font-size: 13px; font-weight: 600; margin: 0; }
.panel-body { padding: var(--space-4); }
.panel-actions { display: flex; flex-direction: column; gap: var(--space-3); }
.panel-debug { margin-top: var(--space-6); }

.info-list { display: flex; flex-direction: column; gap: var(--space-3); }
.info-row { display: flex; justify-content: space-between; gap: var(--space-3); }
.info-row dt { color: var(--color-text-3); font-size: 12px; }
.info-row dd { color: var(--color-text-1); margin: 0; font-size: 13px; }

/* ── Login ─────────────────────────────────────────────────────────────────── */
.login-screen {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--color-bg-app); padding: var(--space-6);
}
.login-card {
  width: 100%; max-width: 420px;
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  padding: var(--space-8);
}
.login-brand { text-align: center; margin-bottom: var(--space-8); }
.login-brand .brand-mark { margin: 0 auto var(--space-4); }
.login-brand h1 { font-size: 22px; font-weight: 600; margin: 0 0 var(--space-1); }
.login-subtitle { color: var(--color-text-2); margin: 0; }
.login-form { display: flex; flex-direction: column; gap: var(--space-4); }
.login-hint { margin-top: var(--space-4); color: var(--color-text-3); font-size: 12px; text-align: center; }
.login-hint code { background: var(--color-bg-2); padding: 2px 4px; border-radius: var(--radius-sm); }

.brand-mark {
  width: 48px; height: 48px; border-radius: var(--radius);
  background: var(--color-bg-2); border: 1px solid var(--color-border-1);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700; color: var(--color-text-1);
}

/* ── Alerts ───────────────────────────────────────────────────────────────── */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  font-size: 13px;
}
.alert-error { background: var(--status-danger-bg); color: var(--status-danger); border: 1px solid rgba(248,113,113,0.25); }
.alert-success { background: var(--status-success-bg); color: var(--status-success); border: 1px solid rgba(74,222,128,0.25); }
.alert-warning { background: var(--status-warning-bg); color: var(--status-warning); border: 1px solid rgba(250,204,21,0.25); }
.alert-info { background: var(--status-info-bg); color: var(--status-info); border: 1px solid rgba(96,165,250,0.25); }

/* ── Loading / empty / error ──────────────────────────────────────────────── */
.loading-state { display: flex; align-items: center; gap: var(--space-3); color: var(--color-text-3); padding: var(--space-6); }
.loading-state.compact { padding: var(--space-4); }
.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--color-border-1);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  padding: var(--space-8);
  border: 1px dashed var(--color-border-1);
  border-radius: var(--radius);
  background: var(--color-bg-1);
}
.empty-state.inline { padding: var(--space-6); }
.empty-state h4 { margin: 0 0 var(--space-2); font-size: 14px; font-weight: 600; }
.empty-state p { margin: 0 0 var(--space-4); color: var(--color-text-2); max-width: 480px; }
.empty-state.compact p { margin-bottom: 0; }

.error-state {
  padding: var(--space-6);
  border: 1px solid rgba(248,113,113,0.25);
  border-radius: var(--radius);
  background: var(--status-danger-bg);
}
.error-state h4 { margin: 0 0 var(--space-2); font-size: 14px; font-weight: 600; color: var(--status-danger); }
.error-state p { margin: 0 0 var(--space-3); color: var(--color-text-2); }
.error-state pre {
  background: var(--color-bg-app); padding: var(--space-3); border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 11px; color: var(--color-text-2);
  overflow-x: auto;
}

/* ── Activity ─────────────────────────────────────────────────────────────── */
.activity-list { display: flex; flex-direction: column; }
.activity-item {
  display: flex; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-1);
}
.activity-item:last-child { border-bottom: none; }
.activity-dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 6px; flex-shrink: 0; }
.activity-content { flex: 1; min-width: 0; }
.activity-title { color: var(--color-text-1); font-size: 13px; margin-bottom: 2px; }
.activity-meta { color: var(--color-text-3); font-size: 11px; }

/* ── Toolbar ───────────────────────────────────────────────────────────────── */
.list-toolbar {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.list-toolbar .toolbar-field { display: flex; align-items: center; gap: var(--space-2); min-width: 0; }
.list-toolbar .input { width: 280px; }

/* ── RFP workspace ─────────────────────────────────────────────────────────── */
.rfp-workspace {
  min-width: 0;
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}
.rfp-tabs-sticky {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-bg-app);
  border-bottom: 1px solid var(--color-border-1);
  padding: 0 var(--page-padding);
  margin: 0 calc(-1 * var(--page-padding));
}
.rfp-tab-content {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding-top: var(--space-4);
}

.rfp-overview-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-6);
  align-items: start;
}
.rfp-overview-main { min-width: 0; }
.rfp-overview-sidebar { display: flex; flex-direction: column; gap: var(--space-4); min-width: 0; }

/* ── Scope ─────────────────────────────────────────────────────────────────── */
.scope-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-6);
  align-items: start;
}
.scope-panel.read-only { display: flex; flex-direction: column; gap: var(--space-4); }
.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4) var(--space-6);
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  padding: var(--space-5);
  min-width: 0;
}
.scope-field { display: flex; flex-direction: column; gap: 0.2rem; min-width: 0; }
.scope-field.scope-full { grid-column: 1 / -1; }
.scope-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-text-3);
}
.scope-value { font-size: 14px; color: var(--color-text-1); word-break: break-word; }
.scope-value-large { font-size: 16px; font-weight: 500; }
.scope-empty-value { color: var(--color-text-3); }
.scope-meta {
  display: flex; flex-wrap: wrap; gap: var(--space-3);
  font-size: 12px; color: var(--color-text-3);
  padding-top: var(--space-3); border-top: 1px solid var(--color-border-1);
}
.scope-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; }
.scope-state {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: 13px; font-weight: 600;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-1);
}
.scope-state.suggested { color: var(--status-warning); border-color: rgba(250,204,21,0.25); }
.scope-state.confirmed { color: var(--status-success); border-color: rgba(74,222,128,0.25); }

/* ── Split pane requirements ──────────────────────────────────────────────── */
.split-pane {
  display: flex;
  gap: 0;
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  overflow: hidden;
  flex: 1;
  min-height: 0;
}
.pane-left {
  width: 380px;
  flex-shrink: 0;
  background: var(--color-bg-1);
  border-right: 1px solid var(--color-border-1);
  display: flex;
  flex-direction: column;
  min-width: 280px;
  max-width: 420px;
}
.pane-right {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--color-bg-app);
}
.pane-header {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-1);
  background: var(--color-bg-2);
  display: flex; align-items: center; justify-content: space-between;
}
.pane-body { flex: 1; overflow-y: auto; padding: var(--space-4); }
.pane-left .pane-body { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.pane-title { font-size: 13px; font-weight: 600; margin: 0; }
.pane-subtitle { font-size: 11px; color: var(--color-text-3); margin: 0; }

.req-filter-bar {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-1);
  display: flex; gap: var(--space-2); flex-wrap: wrap;
  background: var(--color-bg-1);
}
.req-filter-bar ix-input { flex: 1; min-width: 140px; }

.req-list { flex: 1; overflow-y: auto; }
.req-row {
  display: flex; align-items: flex-start; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-1);
  cursor: pointer;
  position: relative;
}
.req-row:hover { background: var(--color-bg-2); }
.req-row.selected { background: var(--color-bg-3); }
.req-row.selected::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--color-primary);
}
.req-row:focus-visible { outline: 2px solid var(--color-primary); outline-offset: -2px; }
.req-id {
  font-family: var(--font-mono); font-size: 11px; color: var(--color-text-3);
  flex-shrink: 0; width: 36px; padding-top: 2px;
}
.req-main { flex: 1; min-width: 0; }
.req-text {
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; color: var(--color-text-1); font-size: 13px;
  line-height: 1.45; margin-bottom: var(--space-1);
}
.req-meta { display: flex; align-items: center; gap: var(--space-2); color: var(--color-text-3); font-size: 11px; }
.req-status { flex-shrink: 0; display: flex; flex-direction: column; align-items: flex-end; gap: var(--space-1); }

/* Requirement detail */
.detail-block { margin-bottom: var(--space-6); }
.detail-block-title {
  font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--color-text-3); margin: 0 0 var(--space-3);
}
.detail-question { font-size: 16px; line-height: 1.45; color: var(--color-text-1); margin: 0 0 var(--space-4); font-weight: 500; }
.detail-meta { display: flex; flex-wrap: wrap; gap: var(--space-3); color: var(--color-text-2); font-size: 12px; margin-bottom: var(--space-4); }
.detail-meta .status-pill { text-transform: none; font-weight: 500; }

.editor-boundary {
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  overflow: hidden;
}
.editor-textarea {
  width: 100%; min-height: 160px; background: var(--color-bg-1); border: none;
  padding: var(--space-4); color: var(--color-text-1);
  line-height: 1.6; outline: none; resize: vertical;
}
.editor-meta {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border-1);
  background: var(--color-bg-2);
  font-size: 12px; color: var(--color-text-3);
}
.dirty-indicator {
  font-size: 11px; color: var(--status-warning);
  display: inline-flex; align-items: center; gap: var(--space-1);
}
.saved-indicator {
  font-size: 11px; color: var(--status-success);
  display: inline-flex; align-items: center; gap: var(--space-1);
}

.action-bar {
  display: flex; align-items: center; justify-content: flex-end;
  gap: var(--space-3); padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-1); margin-top: var(--space-4);
  flex-wrap: wrap;
}
.action-bar-left { margin-right: auto; }

.source-list { display: flex; flex-direction: column; gap: var(--space-2); }
.source-item {
  padding: var(--space-3); background: var(--color-bg-2);
  border: 1px solid var(--color-border-1); border-radius: var(--radius); font-size: 12px;
}
.source-title { color: var(--color-text-2); font-weight: 500; margin-bottom: var(--space-1); }
.source-text { color: var(--color-text-3); line-height: 1.5; }

.history-list { display: flex; flex-direction: column; gap: var(--space-2); }
.history-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-3); background: var(--color-bg-2);
  border: 1px solid var(--color-border-1); border-radius: var(--radius); font-size: 12px;
}
.history-left { display: flex; flex-direction: column; gap: var(--space-1); }
.history-version { font-weight: 500; color: var(--color-text-1); }
.history-meta { color: var(--color-text-3); }

/* ── Review page / tab ───────────────────────────────────────────────────── */
.review-table { width: 100%; }
.review-row-table { cursor: pointer; transition: background 120ms ease; }
.review-row-table:hover { background: var(--color-bg-2); }
.review-preview {
  max-width: 40ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text-2);
  font-size: 12px;
}
.review-cell-meta { font-size: 11px; color: var(--color-text-3); }

/* ── Knowledge library ─────────────────────────────────────────────────────── */
.knowledge-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-6);
  align-items: start;
}
.knowledge-toolbar {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-4); flex-wrap: wrap;
}
.knowledge-toolbar .toolbar-field { display: flex; align-items: center; gap: var(--space-2); }
.knowledge-toolbar .input { width: 280px; }
.knowledge-count { font-size: 12px; color: var(--color-text-3); margin-bottom: var(--space-3); }
.knowledge-row { cursor: pointer; }
.knowledge-row.selected { background: var(--color-bg-3); }
.knowledge-title { font-weight: 500; }
.knowledge-row-actions { display: flex; align-items: center; gap: var(--space-2); }
.knowledge-preview-results { margin-top: var(--space-4); }
.knowledge-match {
  padding: var(--space-3); background: var(--color-bg-1);
  border: 1px solid var(--color-border-1); border-radius: var(--radius);
  margin-bottom: var(--space-3);
}
.knowledge-match-header { display: flex; justify-content: space-between; margin-bottom: var(--space-2); }
.knowledge-match-label { font-size: 11px; color: var(--color-text-3); margin-bottom: 2px; }
.knowledge-match-text { font-size: 13px; color: var(--color-text-1); margin-bottom: var(--space-2); }
.knowledge-import-form { display: flex; flex-direction: column; gap: var(--space-3); }
.file-selected { font-size: 12px; color: var(--color-text-3); margin-top: 2px; }
.knowledge-import-summary { margin-top: var(--space-4); }
.knowledge-preview-list { display: flex; flex-direction: column; gap: var(--space-2); }
.knowledge-preview-item {
  padding: var(--space-3); background: var(--color-bg-2);
  border: 1px solid var(--color-border-1); border-radius: var(--radius);
}

/* ── System Health ─────────────────────────────────────────────────────────── */
.health-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.health-summary-card {
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: flex; align-items: center; gap: var(--space-3);
}
.health-summary-count { font-size: 24px; font-weight: 600; }
.health-summary-label { font-size: 12px; color: var(--color-text-2); }

.health-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.health-card {
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.health-card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: var(--space-2);
}
.health-card-name { font-weight: 500; }
.health-card-status { font-size: 12px; font-weight: 600; }
.health-card-detail { font-size: 12px; color: var(--color-text-3); }
.health-degraded .health-card { border-color: rgba(250,204,21,0.30); background: rgba(250,204,21,0.05); }
.health-down .health-card { border-color: rgba(248,113,113,0.30); background: rgba(248,113,113,0.05); }

.health-header-bar {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.health-last-checked { font-size: 12px; color: var(--color-text-3); }

.debug-log {
  max-height: 400px; overflow-y: auto;
  font-family: var(--font-mono); font-size: 11px;
  display: flex; flex-direction: column; gap: var(--space-2);
}
.debug-entry { display: flex; gap: var(--space-3); }
.debug-time { color: var(--color-text-3); flex-shrink: 0; }
.debug-method { color: var(--color-primary); font-weight: 600; }
.debug-ok { color: var(--status-success); }
.debug-error { color: var(--status-danger); }

/* ── Modal system ──────────────────────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}
.modal.hidden { display: none; }

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1001;
  background: rgba(0, 0, 0, 0.7);
}

.modal-surface {
  position: relative;
  z-index: 1002;
  width: 100%;
  max-width: 520px;
  max-height: calc(100dvh - var(--space-8));
  overflow-y: auto;
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius);
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
}
.modal-surface-lg { max-width: 720px; }

.modal-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--color-border-1);
  position: sticky; top: 0; background: var(--color-bg-1); z-index: 1;
}
.modal-header h3 { margin: 0; font-size: 16px; font-weight: 600; }
.modal-subtitle { color: var(--color-text-2); margin: var(--space-1) 0 0; font-size: 12px; }
.modal-close {
  background: transparent; border: none; color: var(--color-text-3);
  font-size: 20px; cursor: pointer; line-height: 1; padding: var(--space-1);
  border-radius: var(--radius-sm);
}
.modal-close:hover { color: var(--color-text-1); background: var(--color-bg-2); }
.modal-close:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.modal-body { padding: var(--space-5); }
.modal-footer {
  display: flex; justify-content: flex-end; gap: var(--space-3);
  padding: var(--space-4) var(--space-5); border-top: 1px solid var(--color-border-1);
  position: sticky; bottom: 0; background: var(--color-bg-1); z-index: 1;
}

body.modal-open { overflow: hidden; }

.upload-dropzone {
  border: 2px dashed var(--color-border-2);
  border-radius: var(--radius);
  padding: var(--space-8);
  text-align: center;
  color: var(--color-text-2);
  position: relative;
  cursor: pointer;
  background: var(--color-bg-2);
  transition: border-color 120ms ease, background 120ms ease;
}
.upload-dropzone:hover { border-color: var(--color-border-2); background: var(--color-bg-3); }
.upload-dropzone.dragover { border-color: var(--color-primary); background: var(--color-primary-subtle); }
.upload-icon { margin: 0 auto var(--space-3); color: var(--color-text-3); }
.upload-title { font-weight: 500; margin: 0 0 var(--space-1); color: var(--color-text-1); }
.upload-subtitle { font-size: 12px; color: var(--color-text-3); margin: 0; }
.upload-formats { font-size: 11px; color: var(--color-text-3); margin-top: var(--space-3); }
.upload-file-input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.upload-selected {
  display: flex; align-items: center; justify-content: flex-start; gap: var(--space-3);
  margin-top: var(--space-4); padding: var(--space-3);
  font-size: 13px; color: var(--color-text-1);
  background: var(--color-bg-2); border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
}
.upload-selected-name { font-weight: 500; }
.upload-selected-size { color: var(--color-text-3); font-size: 12px; }
.upload-remove { margin-left: auto; font-size: 12px; color: var(--status-danger); cursor: pointer; }
.upload-remove:hover { text-decoration: underline; }

/* ── Toasts ───────────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed; top: var(--space-4); right: var(--space-4);
  z-index: 3000; display: flex; flex-direction: column; gap: var(--space-3);
  max-width: 360px;
}
.toast {
  padding: var(--space-4); border-radius: var(--radius);
  color: var(--color-text-1); font-size: 13px;
  border: 1px solid var(--color-border-1);
  transition: opacity 220ms ease, transform 220ms ease;
}
.toast.error { background: var(--status-danger-bg); border-color: rgba(248,113,113,0.25); }
.toast.success { background: var(--status-success-bg); border-color: rgba(74,222,128,0.25); }
.toast.warning { background: var(--status-warning-bg); border-color: rgba(250,204,21,0.25); }
.toast.info { background: var(--status-info-bg); border-color: rgba(96,165,250,0.25); }

/* ── Structured fields ─────────────────────────────────────────────────────── */
.structured-fields { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-4); }
.structured-field { margin-bottom: 0; }
.structured-input {
  width: 100%; background: var(--color-bg-2); border: 1px solid var(--color-border-1);
  border-radius: var(--radius); color: var(--color-text-1); padding: var(--space-2) var(--space-3);
}

/* ── Data rows ─────────────────────────────────────────────────────────────── */
.data-list { display: flex; flex-direction: column; gap: var(--space-2); }
.data-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-1);
  border: 1px solid var(--color-border-1);
  border-radius: var(--radius);
  min-width: 0;
}
.data-row-main { flex: 1; min-width: 0; }
.data-row-title { font-weight: 500; margin-bottom: 2px; }
.data-row-meta { font-size: 12px; color: var(--color-text-3); }
.data-row-actions { display: flex; gap: var(--space-2); align-items: center; }

/* ── Utility ───────────────────────────────────────────────────────────────── */
.text-muted { color: var(--color-text-3); }
.text-secondary { color: var(--color-text-2); }
.font-mono { font-family: var(--font-mono); }
.flex { display: flex; }
.items-center { align-items: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.w-full { width: 100%; }
.min-w-0 { min-width: 0; }

/* ── Reduced motion ─────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .rfp-overview-grid, .scope-layout, .knowledge-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .rfp-context-header { flex-direction: column; }
  .rfp-context-actions { width: 100%; justify-content: flex-start; }
  .split-pane { flex-direction: column; min-height: auto; }
  .pane-left { width: 100%; max-width: none; border-right: none; border-bottom: 1px solid var(--color-border-1); }
  .rfp-tabs-sticky { position: relative; }
  .list-toolbar { flex-direction: column; align-items: stretch; }
  .list-toolbar .input { width: auto; }
  .health-grid { grid-template-columns: 1fr; }
  .page-header-block.with-action { flex-direction: column; }
}

@media (max-width: 640px) {
  .data-table { display: block; }
  .data-table thead { display: none; }
  .data-table tbody, .data-table tr, .data-table td { display: block; width: 100%; }
  .data-table tr {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-1);
  }
  .data-table td {
    padding: var(--space-1) 0;
    border: none;
    text-align: left;
    white-space: normal;
  }
  .data-table td::before {
    content: attr(data-label);
    display: block;
    font-size: 11px;
    color: var(--color-text-3);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 2px;
  }
  .cell-progress { width: 100%; }
}

@media (max-width: 480px) {
  .metric-strip { grid-template-columns: repeat(2, 1fr); }
  .modal-surface { max-width: 100%; max-height: calc(100dvh - var(--space-4)); }
  .form-row { grid-template-columns: 1fr; }
}