/* ================================================================
   DESIGN TOKENS
================================================================ */
:root {
  --bg:             #0a0f1e;
  --surface:        #111827;
  --surface-2:      #1c2638;
  --surface-3:      #243044;
  --border:         #2d3f55;
  --border-subtle:  #1e2d3d;
  --text:           #f0f4f8;
  --text-2:         #8da0b3;
  --text-3:         #4d6478;

  --accent:         #3b82f6;
  --accent-hover:   #2563eb;
  --accent-muted:   rgba(59,130,246,0.12);
  --accent-border:  rgba(59,130,246,0.35);

  --success:        #22c55e;
  --success-muted:  rgba(34,197,94,0.12);
  --success-border: rgba(34,197,94,0.35);

  --warning:        #f59e0b;
  --warning-muted:  rgba(245,158,11,0.12);
  --warning-border: rgba(245,158,11,0.35);

  --danger:         #ef4444;
  --danger-muted:   rgba(239,68,68,0.12);
  --danger-border:  rgba(239,68,68,0.35);

  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   14px;
  --radius-xl:   20px;
  --radius-full: 999px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 0 3px var(--accent-muted);

  --header-h:        60px;
  --mobile-tabs-h:   46px;
  --sidebar-w:       220px;
  --equipment-w:     300px;

  --transition: 0.15s ease;
}

body.light {
  --bg:             #f0f4f8;
  --surface:        #ffffff;
  --surface-2:      #f7f9fc;
  --surface-3:      #eef2f7;
  --border:         #dce4ef;
  --border-subtle:  #e8eef6;
  --text:           #0f172a;
  --text-2:         #4a6180;
  --text-3:         #8da0b3;
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.12);
}

/* ================================================================
   RESET & BASE
================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

[hidden], .d-none { display: none !important; }

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button { font-family: inherit; }

/* ================================================================
   HEADER
================================================================ */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 20px;
  z-index: 100;
}

.app-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  white-space: nowrap;
  min-width: var(--sidebar-w);
  flex-shrink: 0;
}
.app-logo svg {
  width: 22px;
  height: 22px;
  color: var(--accent);
  flex-shrink: 0;
}

.header-search {
  flex: 1;
  max-width: 380px;
  position: relative;
}
.header-search .search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--text-3);
  pointer-events: none;
}
.header-search input {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 7px 12px 7px 32px;
  color: var(--text);
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition);
}
.header-search input:focus { border-color: var(--accent); }
.header-search input::placeholder { color: var(--text-3); }

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.session-timer {
  font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-muted);
  border: 1px solid var(--accent-border);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  letter-spacing: 0.05em;
}

/* ================================================================
   BUTTONS
================================================================ */
.btn-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
  flex-shrink: 0;
}
.btn-icon svg { width: 16px; height: 16px; }
.btn-icon:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--accent);
}
.btn-icon.btn-sm { width: 28px; height: 28px; font-size: 0.9rem; }
.btn-icon.btn-sm svg { width: 14px; height: 14px; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  background: var(--accent);
  border: none;
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}
.btn-primary svg { width: 15px; height: 15px; }
.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-secondary:hover {
  background: var(--surface-2);
  color: var(--text);
}

.btn-danger {
  padding: 8px 16px;
  border-radius: var(--radius-md);
  background: var(--danger-muted);
  border: 1px solid var(--danger-border);
  color: var(--danger);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-danger:hover {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}

.btn-reset {
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-reset:hover {
  background: var(--danger-muted);
  border-color: var(--danger-border);
  color: var(--danger);
}

/* ================================================================
   MOBILE TAB BAR
================================================================ */
.mobile-tabs {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0;
  height: var(--mobile-tabs-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  z-index: 99;
}

.mobile-tab {
  flex: 1;
  height: 100%;
  border: none;
  background: transparent;
  color: var(--text-3);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.mobile-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: var(--accent-muted);
}

/* ================================================================
   APP LAYOUT
================================================================ */
.app-layout {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0; bottom: 0;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr var(--equipment-w);
  overflow: hidden;
}

/* ================================================================
   SIDEBAR
================================================================ */
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  padding: 16px 10px;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.section-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
  padding: 0 6px;
}

.filter-grid {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.filter-item {
  display: flex;
  align-items: center;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-2);
  background: transparent;
  text-align: left;
  width: 100%;
}
.filter-item:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
}
.filter-item.selected {
  background: var(--accent-muted);
  border-color: var(--accent-border);
  color: var(--accent);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

/* ================================================================
   MAIN PANEL
================================================================ */
.main-panel {
  overflow-y: auto;
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

/* Empty state */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  text-align: center;
  color: var(--text-2);
  padding: 48px 32px;
}
.empty-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.empty-icon svg { width: 28px; height: 28px; color: var(--accent); }
.empty-state h2 { font-size: 1.1rem; font-weight: 600; color: var(--text); }
.empty-state p { font-size: 0.875rem; max-width: 300px; color: var(--text-2); }

/* Session view */
.session-view {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 660px;
  width: 100%;
}

.session-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.session-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge-tech  { background: var(--accent-muted);  color: var(--accent);  border: 1px solid var(--accent-border); }
.badge-issue { background: var(--warning-muted); color: var(--warning); border: 1px solid var(--warning-border); }

/* ── Client / site name card ── */
.client-details-card {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 4px;
}

/* ── Fault / session time details card ── */
.fault-details-card {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  padding: 10px 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.fault-detail-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 160px;
}

.fault-detail-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-3);
}

.fault-detail-input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.82rem;
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
  cursor: pointer;
}
.fault-detail-input:focus { border-color: var(--accent); }
select.fault-detail-input { appearance: auto; }
/* Style the calendar picker icon on dark bg */
.fault-detail-input::-webkit-calendar-picker-indicator {
  filter: invert(0.6);
  cursor: pointer;
}
body.light .fault-detail-input::-webkit-calendar-picker-indicator { filter: none; }

.fault-detail-value {
  font-size: 0.85rem;
  color: var(--text-2);
  padding: 5px 0;
  font-variant-numeric: tabular-nums;
}

.session-progress-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.progress-track {
  flex: 1;
  height: 5px;
  background: var(--surface-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #60a5fa);
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
  width: 0%;
}
.progress-text {
  font-size: 0.72rem;
  color: var(--text-3);
  white-space: nowrap;
  font-weight: 600;
}

/* ================================================================
   STEP CARDS
================================================================ */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  transition: all 0.2s ease;
}

.step-card.active {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow), var(--shadow-sm);
}

.step-card.done {
  background: var(--surface-2);
  border-color: var(--border-subtle);
  opacity: 0.6;
}

.step-card.skipped {
  background: var(--surface-2);
  border-color: var(--border-subtle);
  opacity: 0.45;
}

.step-card-top {
  display: flex;
  align-items: flex-start;
  gap: 11px;
}

.step-number {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
  transition: all 0.2s;
}
.step-card.pending .step-number {
  background: var(--surface-2);
  color: var(--text-3);
  border: 1px solid var(--border);
}
.step-card.active .step-number {
  background: var(--accent);
  color: white;
  border: 1px solid var(--accent);
  box-shadow: 0 0 8px rgba(59,130,246,0.4);
}
.step-card.done .step-number {
  background: var(--success-muted);
  color: var(--success);
  border: 1px solid var(--success-border);
}
.step-card.skipped .step-number {
  background: var(--surface-3);
  color: var(--text-3);
  border: 1px solid var(--border);
}

.step-body { flex: 1; min-width: 0; }

.step-text {
  font-size: 0.88rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text);
  transition: color 0.2s;
}
.step-card.done .step-text,
.step-card.skipped .step-text {
  text-decoration: line-through;
  color: var(--text-3);
}

.step-meta {
  display: flex;
  gap: 5px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.risk-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}
.risk-disruptive {
  background: var(--warning-muted);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}

.step-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  margin-left: 35px;
}

.btn-done {
  padding: 5px 13px;
  border-radius: var(--radius-md);
  background: var(--success-muted);
  border: 1px solid var(--success-border);
  color: var(--success);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-done:hover {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.btn-skip {
  padding: 5px 13px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-3);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-skip:hover {
  border-color: var(--text-2);
  color: var(--text-2);
}

.step-status-label {
  margin-top: 6px;
  margin-left: 35px;
  font-size: 0.72rem;
  font-weight: 600;
}
.step-status-done    { color: var(--success); }
.step-status-skipped { color: var(--text-3); }

.session-actions {
  padding-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.session-actions-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* Issue Fixed button — on the active step card, clearly terminal / green */
.btn-issue-fixed {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1.5px solid var(--success-border);
  color: var(--success);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-issue-fixed:hover {
  background: var(--success-muted);
}

/* Divider between Skip and Issue Fixed in step action rows */
.step-actions-divider {
  width: 1px;
  height: 18px;
  background: var(--border);
  align-self: center;
  flex-shrink: 0;
}

/* ── Result input (active step) ── */
.step-result-area {
  margin-top: 12px;
  margin-left: 35px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.result-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-3);
}

.result-input {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.82rem;
  line-height: 1.5;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
  min-height: 60px;
}
.result-input:focus {
  border-color: var(--accent);
  background: var(--surface);
}
.result-input::placeholder { color: var(--text-3); font-style: italic; }

/* ── Radio-style single-select options ── */
.step-option-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 6px;
}

.step-option-btn {
  display: block;
  width: 100%;
  text-align: left;
  padding: 7px 12px;
  border-radius: var(--radius-md);
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1.4;
}
.step-option-btn:hover {
  background: var(--accent-muted);
  border-color: var(--accent-border);
  color: var(--text);
}
.step-option-btn.selected {
  background: var(--accent-muted);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}
.step-option-btn.selected::before {
  content: '✓  ';
  font-weight: 700;
}

/* ── Structured field grid (speed test, ping, DSL sync…) ── */
.step-fields-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-top: 6px;
}

.step-field-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 100px;
  flex: 1;
}

.step-field-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
}

.step-field-input-wrap {
  display: flex;
  align-items: center;
  gap: 5px;
}

.step-field-input {
  flex: 1;
  min-width: 0;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
  transition: border-color var(--transition);
  /* prevent number spinners looking huge */
  -moz-appearance: textfield;
}
.step-field-input::-webkit-outer-spin-button,
.step-field-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.step-field-input:focus { border-color: var(--accent); background: var(--surface); }
.step-field-input::placeholder { color: var(--text-3); font-style: italic; font-size: 0.78rem; }

.step-field-select {
  flex: 1;
  min-width: 0;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.82rem;
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition);
}
.step-field-select:focus { border-color: var(--accent); }
.step-field-select option { background: var(--surface); color: var(--text); }

.step-field-unit {
  font-size: 0.75rem;
  color: var(--text-3);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Recorded result on completed step ── */
.step-result-display {
  margin-top: 7px;
  margin-left: 35px;
  font-size: 0.8rem;
  color: var(--text-2);
  background: var(--surface-2);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 5px 10px;
  line-height: 1.5;
  display: flex;
  gap: 6px;
  align-items: flex-start;
}
.result-arrow {
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* ── "Did this resolve it?" prompt ── */
.resolved-prompt {
  margin-top: 12px;
  margin-left: 35px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.resolved-prompt-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-2);
  margin-right: 4px;
}

.btn-resolved-yes {
  padding: 5px 12px;
  border-radius: var(--radius-md);
  background: var(--success-muted);
  border: 1px solid var(--success-border);
  color: var(--success);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-resolved-yes:hover {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.btn-resolved-no {
  padding: 5px 12px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-3);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-resolved-no:hover {
  border-color: var(--text-2);
  color: var(--text-2);
}

/* ── Step resolved-here tag ── */
.step-resolved-tag {
  margin-top: 8px;
  margin-left: 35px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--success);
  background: var(--success-muted);
  border: 1px solid var(--success-border);
  border-radius: var(--radius-full);
  display: inline-block;
  padding: 3px 10px;
}

/* ── Cancelled step (after session resolved) ── */
.step-card.cancelled {
  opacity: 0.3;
  background: var(--surface-2);
  border-color: var(--border-subtle);
  pointer-events: none;
}

/* ── Session resolved banner ── */
.resolved-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: var(--success-muted);
  border: 1px solid var(--success-border);
  border-radius: var(--radius-lg);
  margin-bottom: 4px;
  animation: slideUp 0.25s ease;
}

.resolved-banner-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--success);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

.resolved-banner-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.resolved-banner-content strong {
  font-size: 0.9rem;
  color: var(--success);
}
.resolved-banner.concluded {
  background: var(--warning-muted);
  border-color: var(--warning-border);
}
.resolved-banner.concluded .resolved-banner-icon {
  background: var(--warning);
  color: #000;
}
.resolved-banner.concluded .resolved-banner-content strong {
  color: var(--warning);
}
.resolved-banner-content span {
  font-size: 0.78rem;
  color: var(--text-2);
}

/* ================================================================
   EQUIPMENT PANEL
================================================================ */
.equipment-panel {
  background: var(--surface);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  position: relative; /* anchor the resize handle */
}

/* Drag-to-resize handle on the left edge of the equipment panel */
.eq-resize-handle {
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  cursor: col-resize;
  z-index: 10;
  background: transparent;
  transition: background var(--transition);
}
.eq-resize-handle:hover,
.eq-resize-handle:active {
  background: var(--accent-border);
}

.equipment-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  text-align: center;
  color: var(--text-3);
}
.equipment-empty svg { width: 36px; height: 36px; opacity: 0.4; }
.equipment-empty p { font-size: 0.82rem; max-width: 180px; }

.equipment-view {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.model-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px 6px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}
.model-title {
  font-weight: 600;
  font-size: 0.82rem;
  text-align: center;
  flex: 1;
  line-height: 1.3;
}
.model-index-label {
  text-align: center;
  font-size: 0.68rem;
  color: var(--text-3);
  font-weight: 500;
  padding: 4px 14px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Image tabs */
.image-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
}
.img-tab {
  flex: 1;
  padding: 8px 4px;
  border: none;
  background: transparent;
  color: var(--text-3);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.img-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.img-tab:hover:not(.active) { color: var(--text-2); }

.equipment-image-wrap {
  padding: 14px 12px;
  min-height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.equipment-image-wrap img {
  max-width: 100%;
  max-height: 210px;
  object-fit: contain;
  border-radius: var(--radius-md);
  cursor: zoom-in;
  transition: transform 0.2s;
}
.equipment-image-wrap img:hover { transform: scale(1.03); }

/* Info tabs */
.info-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
}
.info-tab {
  flex: 1;
  padding: 8px 4px;
  border: none;
  background: transparent;
  color: var(--text-3);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.info-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.info-tab:hover:not(.active) { color: var(--text-2); }

.panel-content { padding: 12px; }

/* LED table */
.led-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.76rem;
}
.led-table th {
  background: var(--surface-2);
  padding: 6px 8px;
  text-align: left;
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  color: var(--text-3);
}
.led-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--border-subtle);
  vertical-align: middle;
  color: var(--text);
  line-height: 1.4;
}
.led-table td:not(:last-child) { white-space: nowrap; }
.led-table tr:last-child td { border-bottom: none; }
.led-table tr:hover td { background: var(--surface-2); }

/* LED status indicator dots */
.led-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
  flex-shrink: 0;
  position: relative;
  top: -1px;
}
.led-green  { background: var(--success); box-shadow: 0 0 5px var(--success); }
.led-red    { background: var(--danger);  box-shadow: 0 0 5px var(--danger); }
.led-amber  { background: var(--warning); box-shadow: 0 0 5px var(--warning); }
.led-white  { background: #e2e8f0; box-shadow: 0 0 4px rgba(226,232,240,0.6); border: 1px solid var(--border); }
.led-off    { background: var(--surface-3); border: 1px solid var(--border); }

@keyframes led-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.15; }
}
.led-flashing {
  animation: led-pulse 1.4s ease-in-out infinite;
}

.coming-soon-text {
  color: var(--text-3);
  font-size: 0.8rem;
  text-align: center;
  padding: 16px 8px;
  line-height: 1.6;
}
.coming-soon-text code {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 0.72rem;
  color: var(--text-2);
}

/* Image placeholder */
.img-placeholder {
  width: 100%;
  min-height: 160px;
  border-radius: var(--radius-md);
  border: 2px dashed var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 7px;
  color: var(--text-3);
  padding: 20px;
}
.img-placeholder svg {
  width: 32px;
  height: 32px;
  opacity: 0.35;
}
.img-placeholder span { font-size: 0.78rem; font-weight: 600; }
.img-placeholder small { font-size: 0.7rem; text-align: center; opacity: 0.7; }

/* ================================================================
   MODALS
================================================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(16px) scale(0.98); } to { opacity: 1; transform: none; } }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 520px;
  max-height: 82vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.2s ease;
}
.modal-sm { max-width: 380px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 0.95rem; font-weight: 600; }

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}
.modal-body p {
  color: var(--text-2);
  font-size: 0.875rem;
  line-height: 1.65;
}

.warning-icon-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 14px;
}
.warning-icon-wrap svg {
  width: 40px;
  height: 40px;
  color: var(--warning);
}

.ticket-pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 0.76rem;
  line-height: 1.75;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ================================================================
   PORT REFERENCE MODAL
================================================================ */

.modal-port {
  max-width: 860px;
  width: 100%;
  max-height: 88vh;
}

.port-modal-filters {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}

.port-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.port-search-wrap svg {
  position: absolute;
  left: 10px;
  color: var(--text-3);
  pointer-events: none;
}
.port-search-wrap input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 10px 7px 32px;
  color: var(--text);
  font-size: 0.82rem;
  outline: none;
  transition: border-color var(--transition);
}
.port-search-wrap input:focus { border-color: var(--accent); }
.port-search-wrap input::placeholder { color: var(--text-3); }

.port-category-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.port-filter-label {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-right: 4px;
  align-self: center;
}

.port-direction-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.port-direction-pills {
  display: flex;
  gap: 4px;
}

.port-pill {
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 4px 11px;
  font-size: 0.75rem;
  color: var(--text-2);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.port-pill:hover { background: var(--surface); color: var(--text); }
.port-pill.active {
  background: var(--accent-muted);
  border-color: var(--accent-border);
  color: var(--accent);
}

.port-section {
  margin-bottom: 28px;
}
.port-section:last-child { margin-bottom: 0; }

.port-section-heading {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-subtle);
}

.port-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.port-table th {
  text-align: left;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-3);
  padding: 5px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.port-table td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text);
  vertical-align: middle;
}
.port-table tbody tr:last-child td { border-bottom: none; }
.port-table tbody tr:hover td { background: var(--surface-2); }

.port-num {
  font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  white-space: nowrap;
  font-weight: 500;
}
.port-num-copy,
.port-proto-copy {
  cursor: pointer;
  user-select: none;
}
.port-num-copy:hover { color: var(--accent-hover); text-decoration: underline; }
.port-proto-copy:hover { color: var(--text); text-decoration: underline; }
.port-num-copied { color: var(--success) !important; text-decoration: none !important; }

.port-proto {
  color: var(--text-2);
  white-space: nowrap;
  font-size: 0.78rem;
}
.port-purpose { color: var(--text); }
.port-note {
  color: var(--text-3);
  font-size: 0.78rem;
  white-space: nowrap;
}

.port-dir {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 500;
  white-space: nowrap;
}
.dir-in   { background: var(--accent-muted);   color: var(--accent);  border: 1px solid var(--accent-border); }
.dir-out  { background: var(--success-muted);  color: var(--success); border: 1px solid var(--success-border); }
.dir-both { background: var(--warning-muted);  color: var(--warning); border: 1px solid var(--warning-border); }

.port-empty {
  text-align: center;
  color: var(--text-3);
  font-size: 0.85rem;
  padding: 40px 0;
}

/* ================================================================
   LIGHTBOX
================================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  backdrop-filter: blur(8px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  padding: 52px 24px 24px;
  animation: fadeIn 0.15s ease;
}
.lightbox-close {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.lightbox-close:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: white;
}
.lightbox-img {
  max-width: 90%;
  max-height: 72vh;
  object-fit: contain;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.lightbox-caption {
  color: var(--text-2);
  font-size: 0.85rem;
  text-align: center;
}

/* ================================================================
   RESPONSIVE
================================================================ */
@media (max-width: 1200px) {
  :root {
    --equipment-w: 270px;
    --sidebar-w:   200px;
  }
}

@media (max-width: 900px) {
  :root {
    --equipment-w: 250px;
    --sidebar-w:   180px;
  }
  .main-panel { padding: 20px; }
}

@media (max-width: 768px) {
  .mobile-tabs { display: flex; }

  .app-layout {
    top: calc(var(--header-h) + var(--mobile-tabs-h));
    grid-template-columns: 1fr;
  }

  .sidebar,
  .equipment-panel {
    display: none;
    position: fixed;
    top: calc(var(--header-h) + var(--mobile-tabs-h));
    left: 0; right: 0; bottom: 0;
    z-index: 50;
    overflow-y: auto;
  }
  .sidebar.mobile-visible,
  .equipment-panel.mobile-visible {
    display: flex;
  }

  .main-panel {
    padding: 16px;
    position: fixed;
    top: calc(var(--header-h) + var(--mobile-tabs-h));
    left: 0; right: 0; bottom: 0;
    overflow-y: auto;
  }
  .main-panel.mobile-hidden { display: none; }

  .app-logo { min-width: auto; }
  .header-search { max-width: 220px; }
  .session-view { max-width: 100%; }
}

@media (max-width: 480px) {
  .header-search { display: none; }
  .app-header { gap: 10px; padding: 0 14px; }
}

/* ================================================================
   PRINT
================================================================ */
@media print {
  body { overflow: auto; background: white; color: black; }

  /* Release fixed/sticky layout so content flows naturally */
  .app-header,
  .mobile-tabs { position: relative; background: white; border-bottom: 1px solid #ccc; }

  .app-layout {
    position: relative;
    display: block;
    top: auto; left: auto; right: auto; bottom: auto;
  }

  .sidebar,
  .equipment-panel {
    display: block;
    border: 1px solid #ccc;
    margin-bottom: 16px;
    page-break-inside: avoid;
  }

  .main-panel { overflow: visible; padding: 16px 0; }

  /* Hide elements that add no value when printed */
  .btn-icon,
  .btn-reset,
  .btn-done,
  .btn-skip,
  .btn-primary,
  .session-timer,
  .mobile-tabs,
  .model-nav-bar button,
  .lightbox,
  .modal-backdrop { display: none !important; }

  /* Force text visible regardless of colour vars */
  .filter-item, .section-label, .step-text,
  .model-title, .led-table td, .led-table th { color: black !important; }

  .step-card { border: 1px solid #ccc; margin-bottom: 6px; page-break-inside: avoid; }
}