/* ============================================================
   WrenchLogic Diagnostic App Styles
   Matches theme.css design tokens — dark, orange accent, mono+sans
   ============================================================ */

/* === APP SHELL === */
.app-body {
  min-height: 100vh;
  background: var(--bg);
}

.app-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  background: rgba(13, 13, 15, 0.92);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.app-nav-brand {
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: color 0.2s;
}
.app-nav-brand:hover { color: var(--accent-light); }

.app-nav-badge {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--accent);
  border: 1px solid rgba(232, 118, 10, 0.3);
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--accent-glow);
}

.app-main {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 20px 80px;
}

/* === INPUT SECTION === */
.diag-input-section {
  margin-bottom: 40px;
}

.diag-heading {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
  line-height: 1.1;
}

.diag-subheading {
  color: var(--fg-muted);
  font-size: 1rem;
  margin-bottom: 28px;
  max-width: 560px;
  line-height: 1.6;
}

.input-card {
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 12px;
  padding: 24px;
}

/* Example pills */
.input-examples {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.example-pill {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--fg-muted);
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 100px;
  padding: 6px 14px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  letter-spacing: 0.2px;
}
.example-pill:hover {
  border-color: rgba(232, 118, 10, 0.4);
  color: var(--fg);
  background: var(--accent-glow);
}

/* Textarea */
.textarea-wrap {
  position: relative;
  margin-bottom: 16px;
}

.symptom-textarea {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  color: var(--fg);
  font-family: var(--mono);
  font-size: 0.93rem;
  line-height: 1.6;
  padding: 16px;
  resize: vertical;
  min-height: 130px;
  transition: border-color 0.2s;
  outline: none;
}

.symptom-textarea::placeholder { color: var(--fg-muted); opacity: 0.6; }
.symptom-textarea:focus { border-color: rgba(232, 118, 10, 0.5); }

.char-count {
  text-align: right;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-top: 6px;
  opacity: 0.6;
}

/* Diagnose button */
.diagnose-btn {
  width: 100%;
  background: var(--accent);
  color: #fff;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1rem;
  padding: 14px 24px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  letter-spacing: 0.01em;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
}

.diagnose-btn:hover:not(:disabled) {
  background: var(--accent-light);
  box-shadow: 0 4px 24px rgba(232, 118, 10, 0.35);
}
.diagnose-btn:active:not(:disabled) { transform: translateY(1px); }
.diagnose-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* Spinner */
.btn-spinner {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
}

.spinner-ring {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* === ERROR BANNER === */
.error-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(220, 50, 50, 0.1);
  border: 1px solid rgba(220, 50, 50, 0.3);
  border-radius: 8px;
  padding: 14px 20px;
  color: #f87171;
  font-size: 0.92rem;
  margin-bottom: 24px;
}

.error-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* === RESULTS SECTION === */
.results-section {
  animation: fadeUp 0.35s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.results-inner { display: flex; flex-direction: column; gap: 20px; }

/* Summary bar */
.result-summary-bar {
  background: var(--bg-elevated);
  border: 1px solid rgba(232, 118, 10, 0.2);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  padding: 20px 24px;
}

.summary-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 8px;
}

.summary-text {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.5;
}

.summary-vehicle {
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--fg-muted);
}

/* Failure cards */
.failures-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.failure-card {
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 10px;
  padding: 22px 24px;
  transition: border-color 0.2s;
}

.failure-card:hover {
  border-color: rgba(232, 118, 10, 0.2);
}

.failure-card--top {
  border-color: rgba(232, 118, 10, 0.25);
  background: linear-gradient(135deg, rgba(232, 118, 10, 0.05) 0%, var(--bg-elevated) 100%);
}

.failure-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 14px;
}

.failure-prob {
  font-family: var(--mono);
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1;
  min-width: 56px;
  flex-shrink: 0;
  padding-top: 2px;
}

.failure-title-block {
  flex: 1;
}

.failure-rank {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--fg-muted);
  margin-bottom: 4px;
}

.failure-component {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
}

/* Difficulty badges */
.diff-badge {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.5px;
  padding: 4px 10px;
  border-radius: 4px;
  white-space: nowrap;
  margin-top: 4px;
  flex-shrink: 0;
}

.diff-diy   { background: rgba(16, 185, 129, 0.12); color: #34d399; border: 1px solid rgba(16,185,129,0.25); }
.diff-mid   { background: rgba(245, 158, 11, 0.12); color: #fbbf24; border: 1px solid rgba(245,158,11,0.25); }
.diff-shop  { background: rgba(239, 68,  68, 0.12); color: #f87171; border: 1px solid rgba(239,68,68,0.25); }

.failure-desc {
  font-size: 0.93rem;
  color: var(--fg-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.failure-steps-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 10px;
}

.failure-steps {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  counter-reset: steps;
}

.failure-steps li {
  font-size: 0.88rem;
  color: var(--fg);
  line-height: 1.55;
  padding-left: 28px;
  position: relative;
  counter-increment: steps;
}

.failure-steps li::before {
  content: counter(steps);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-glow);
  width: 20px;
  height: 20px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.failure-parts {
  margin-top: 12px;
  font-size: 0.83rem;
  color: var(--fg-muted);
  font-family: var(--mono);
}

.parts-label {
  color: var(--accent-light);
  margin-right: 4px;
}

/* Quick checks */
.quick-checks-block {
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 10px;
  padding: 20px 24px;
}

.qc-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 14px;
}

.qc-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.qc-list li {
  font-size: 0.9rem;
  color: var(--fg-muted);
  padding-left: 20px;
  position: relative;
  line-height: 1.5;
}

.qc-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.85rem;
}

/* Safety note */
.safety-note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(245, 166, 35, 0.08);
  border: 1px solid rgba(245, 166, 35, 0.25);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 0.88rem;
  color: #fbbf24;
  line-height: 1.55;
}

.safety-icon {
  flex-shrink: 0;
  font-size: 1rem;
}

/* Run another */
.run-another {
  padding-top: 8px;
}

.run-another-btn {
  background: none;
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--fg-muted);
  font-family: var(--sans);
  font-size: 0.88rem;
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.run-another-btn:hover {
  border-color: rgba(232, 118, 10, 0.4);
  color: var(--fg);
}

/* === RESPONSIVE === */
@media (max-width: 600px) {
  .app-main { padding: 32px 16px 60px; }

  .input-card { padding: 18px; }

  .failure-header { flex-wrap: wrap; gap: 10px; }
  .failure-prob   { font-size: 1.5rem; min-width: 48px; }

  .diff-badge { margin-top: 0; }

  .input-examples { gap: 6px; }
  .example-pill   { font-size: 0.72rem; padding: 5px 11px; }

  .results-inner { gap: 14px; }

  .failure-card   { padding: 18px; }
  .result-summary-bar { padding: 16px 18px; }
}