/* =========================================================
   AI Chart Analysis Pro — Frontend Styles
   ========================================================= */

:root {
  --acap-bg:            #0d1117;
  --acap-card-bg:       #161b22;
  --acap-card-border:   #21262d;
  --acap-primary:       #58a6ff;
  --acap-primary-dark:  #1f6feb;
  --acap-green:         #3fb950;
  --acap-red:           #f85149;
  --acap-orange:        #e3b341;
  --acap-purple:        #bc8cff;
  --acap-teal:          #39d353;
  --acap-indigo:        #818cf8;
  --acap-pink:          #f472b6;
  --acap-text:          #e6edf3;
  --acap-text-muted:    #8b949e;
  --acap-radius:        12px;
  --acap-radius-sm:     8px;
  --acap-shadow:        0 4px 24px rgba(0,0,0,.45);
  --acap-transition:    0.22s ease;
}

/* ── Wrapper ── */
.acap-wrapper {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--acap-bg);
  color: var(--acap-text);
  min-height: 60vh;
  padding: 24px 16px 48px;
  border-radius: var(--acap-radius);
  max-width: 960px;
  margin: 0 auto;
}

/* ── Header ── */
.acap-header {
  margin-bottom: 28px;
}
.acap-header-inner {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.acap-header-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--acap-primary-dark), var(--acap-purple));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.acap-header-icon svg { width: 26px; height: 26px; }
.acap-header-title {
  font-size: clamp(1.25rem, 4vw, 1.6rem);
  font-weight: 700;
  margin: 0 0 4px;
  background: linear-gradient(90deg, var(--acap-primary), var(--acap-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.acap-header-sub {
  font-size: 0.875rem;
  color: var(--acap-text-muted);
  margin: 0;
  line-height: 1.5;
}

/* ── Base Card ── */
.acap-card {
  background: var(--acap-card-bg);
  border: 1px solid var(--acap-card-border);
  border-radius: var(--acap-radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--acap-shadow);
}

/* ── Upload Card ── */
.acap-upload-zone {
  border: 2px dashed var(--acap-card-border);
  border-radius: var(--acap-radius);
  padding: 40px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--acap-transition), background var(--acap-transition);
}
.acap-upload-zone:hover,
.acap-upload-zone.drag-over {
  border-color: var(--acap-primary);
  background: rgba(88,166,255,.06);
}
.acap-upload-icon { color: var(--acap-text-muted); margin-bottom: 16px; }
.acap-upload-icon svg { width: 52px; height: 52px; }
.acap-upload-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--acap-text);
  margin-bottom: 6px;
}
.acap-upload-hint {
  font-size: 0.8125rem;
  color: var(--acap-text-muted);
  margin-bottom: 18px;
}

/* Preview */
.acap-preview-wrapper { margin-bottom: 12px; }
.acap-preview-img {
  max-width: 100%;
  max-height: 220px;
  object-fit: contain;
  border-radius: var(--acap-radius-sm);
  border: 1px solid var(--acap-card-border);
}

/* File meta */
.acap-upload-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: rgba(88,166,255,.08);
  border: 1px solid rgba(88,166,255,.25);
  border-radius: var(--acap-radius-sm);
  padding: 10px 14px;
  margin-top: 12px;
}
.acap-file-info {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.acap-file-icon { font-size: 1.25rem; flex-shrink: 0; }
.acap-file-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--acap-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 200px;
}
.acap-file-size {
  font-size: 0.75rem;
  color: var(--acap-text-muted);
  flex-shrink: 0;
}
.acap-btn-icon {
  background: transparent;
  border: none;
  color: var(--acap-text-muted);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 4px 6px;
  border-radius: 6px;
  transition: color var(--acap-transition), background var(--acap-transition);
}
.acap-btn-icon:hover { color: var(--acap-red); background: rgba(248,81,73,.1); }

/* Alert */
.acap-alert {
  border-radius: var(--acap-radius-sm);
  padding: 12px 16px;
  font-size: 0.875rem;
  margin-top: 12px;
}
.acap-alert-error {
  background: rgba(248,81,73,.1);
  border: 1px solid rgba(248,81,73,.35);
  color: #ff7b72;
}

/* Action row */
.acap-action-row {
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

/* ── Buttons ── */
.acap-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 10px 26px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: all var(--acap-transition);
  text-decoration: none;
  line-height: 1.4;
}
.acap-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.acap-btn-primary {
  background: linear-gradient(135deg, var(--acap-primary-dark), var(--acap-primary));
  color: #fff;
  box-shadow: 0 4px 14px rgba(31,111,235,.4);
  min-width: 180px;
  justify-content: center;
}
.acap-btn-primary:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(31,111,235,.6);
}
.acap-btn-outline {
  background: transparent;
  color: var(--acap-primary);
  border: 1px solid var(--acap-primary);
}
.acap-btn-outline:hover { background: rgba(88,166,255,.1); }
.acap-btn-ghost {
  background: transparent;
  color: var(--acap-text-muted);
  border: 1px solid var(--acap-card-border);
  font-size: 0.875rem;
  padding: 8px 18px;
}
.acap-btn-ghost:hover { color: var(--acap-text); border-color: var(--acap-text-muted); }
.acap-btn-icon-wrap svg { width: 18px; height: 18px; }

/* ── Loader ── */
.acap-loader-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px 20px;
}
.acap-loader-inner {
  text-align: center;
  max-width: 320px;
}
.acap-spinner {
  width: 52px;
  height: 52px;
  border: 3px solid rgba(88,166,255,.2);
  border-top-color: var(--acap-primary);
  border-radius: 50%;
  animation: acap-spin 0.9s linear infinite;
  margin: 0 auto 20px;
}
@keyframes acap-spin { to { transform: rotate(360deg); } }
.acap-loader-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--acap-text);
  margin-bottom: 16px;
}
.acap-loader-steps {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.acap-step {
  font-size: 0.8125rem;
  color: var(--acap-text-muted);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.4s, transform 0.4s;
}
.acap-step.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Results ── */
.acap-results { }
.acap-results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.acap-results-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
  color: var(--acap-text);
}
.acap-results-title svg { width: 22px; height: 22px; color: var(--acap-primary); }

/* Grid */
.acap-results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
@media (max-width: 640px) {
  .acap-results-grid { grid-template-columns: 1fr; }
}

/* Result Cards */
.acap-result-card {
  background: var(--acap-card-bg);
  border: 1px solid var(--acap-card-border);
  border-radius: var(--acap-radius);
  overflow: hidden;
  transition: transform var(--acap-transition), box-shadow var(--acap-transition);
}
.acap-result-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.5);
}
.acap-result-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--acap-card-border);
}
.acap-result-icon { font-size: 1.25rem; }
.acap-result-card-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: .3px;
}
.acap-result-card-body { padding: 14px 16px; }
.acap-result-text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--acap-text-muted);
  margin: 0;
  white-space: pre-line;
}

/* Color accents */
.acap-card-blue    .acap-result-card-header { background: rgba(88,166,255,.1); border-bottom-color: rgba(88,166,255,.2); }
.acap-card-blue    .acap-result-card-title  { color: var(--acap-primary); }
.acap-card-purple  .acap-result-card-header { background: rgba(188,140,255,.1); border-bottom-color: rgba(188,140,255,.2); }
.acap-card-purple  .acap-result-card-title  { color: var(--acap-purple); }
.acap-card-orange  .acap-result-card-header { background: rgba(227,179,65,.1); border-bottom-color: rgba(227,179,65,.2); }
.acap-card-orange  .acap-result-card-title  { color: var(--acap-orange); }
.acap-card-teal    .acap-result-card-header { background: rgba(57,211,83,.1); border-bottom-color: rgba(57,211,83,.2); }
.acap-card-teal    .acap-result-card-title  { color: var(--acap-teal); }
.acap-card-indigo  .acap-result-card-header { background: rgba(129,140,248,.1); border-bottom-color: rgba(129,140,248,.2); }
.acap-card-indigo  .acap-result-card-title  { color: var(--acap-indigo); }
.acap-card-pink    .acap-result-card-header { background: rgba(244,114,182,.1); border-bottom-color: rgba(244,114,182,.2); }
.acap-card-pink    .acap-result-card-title  { color: var(--acap-pink); }
.acap-card-green   .acap-result-card-header { background: rgba(63,185,80,.1); border-bottom-color: rgba(63,185,80,.2); }
.acap-card-green   .acap-result-card-title  { color: var(--acap-green); }
.acap-card-red     .acap-result-card-header { background: rgba(248,81,73,.1); border-bottom-color: rgba(248,81,73,.2); }
.acap-card-red     .acap-result-card-title  { color: var(--acap-red); }

/* Disclaimer */
.acap-disclaimer {
  background: rgba(227,179,65,.06);
  border: 1px solid rgba(227,179,65,.2);
  border-radius: var(--acap-radius-sm);
  padding: 12px 16px;
}
.acap-disclaimer p {
  font-size: 0.8125rem;
  color: #b3a46e;
  margin: 0;
  line-height: 1.5;
}

/* ── Utility ── */
.d-none { display: none !important; }

/* ── Mobile ── */
@media (max-width: 480px) {
  .acap-wrapper { padding: 16px 10px 40px; }
  .acap-card    { padding: 16px; }
  .acap-header-inner { gap: 10px; }
  .acap-header-icon  { width: 40px; height: 40px; }
  .acap-btn-primary  { width: 100%; }
  .acap-upload-zone  { padding: 28px 12px; }
  .acap-results-header { flex-direction: column; align-items: flex-start; }
}

/* =========================================================
   Mechanical Analysis — Setup Fields & Validate Button
   ========================================================= */

/* Teal gradient header title */
.acap-header-title {
  background: linear-gradient(90deg, #00f5c4, #00c8ff) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
}

/* Upload zone border teal */
.acap-upload-zone {
  border-color: rgba(0, 245, 196, 0.3) !important;
}
.acap-upload-zone:hover,
.acap-upload-zone.drag-over {
  border-color: #00f5c4 !important;
  background: rgba(0, 245, 196, 0.03) !important;
}

/* Browse Files — teal underlined link */
.acap-browse-link {
  display: inline-block;
  color: #00f5c4;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  margin-top: 4px;
  background: none;
  border: none;
  padding: 0;
}
.acap-browse-link:hover { color: #00c8ff; text-decoration: underline; }

/* ── Setup Fields ── */
.acap-setup-fields {
  margin-top: 24px;
}

/* Two-column grid row */
.acap-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 18px;
}

.acap-field-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.acap-field-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #8b949e;
  text-transform: uppercase;
}

/* Select — native arrow only, no custom span */
.acap-select {
  width: 100%;
  appearance: auto;
  -webkit-appearance: auto;
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 8px;
  color: #e6edf3;
  font-size: 0.9375rem;
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color 0.2s;
  outline: none;
  box-sizing: border-box;
}
.acap-select:focus { border-color: #00f5c4; }
.acap-select option { background: #161b22; color: #e6edf3; }

/* Hide the custom arrow span */
.acap-select-wrap { position: relative; }
.acap-select-arrow { display: none !important; }

/* Text input */
.acap-input {
  width: 100%;
  background: #0d1117;
  border: 1px solid #30363d;
  border-radius: 8px;
  color: #e6edf3;
  font-size: 0.9375rem;
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.acap-input::placeholder { color: #484f58; }
.acap-input:focus { border-color: #00f5c4; }

/* ── Validate Setup Button ── */
.acap-btn-validate {
  display: block;
  width: 100%;
  background: linear-gradient(90deg, #00f5c4, #00c8ff);
  color: #000;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 16px 32px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 24px rgba(0, 245, 196, 0.4);
  text-align: center;
  margin-top: 8px;
}
.acap-btn-validate:not(:disabled):hover {
  opacity: 0.92;
  transform: translateY(-1px);
  box-shadow: 0 8px 32px rgba(0, 245, 196, 0.55);
}
.acap-btn-validate:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* Results meta badges */
.acap-results-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.acap-meta-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(0, 245, 196, 0.1);
  border: 1px solid rgba(0, 245, 196, 0.3);
  color: #00f5c4;
}

/* Responsive */
@media (max-width: 540px) {
  .acap-field-row { grid-template-columns: 1fr; }
}

/* ── Bullet Point List in Result Cards ── */
.acap-bullet-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.acap-bullet-list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--acap-text-muted);
}
.acap-bullet-list li::before {
  content: '•';
  color: #00f5c4;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
  line-height: 1.4;
}
/* Color-matched bullet dots per card */
.acap-card-blue   .acap-bullet-list li::before { color: var(--acap-primary); }
.acap-card-purple .acap-bullet-list li::before { color: var(--acap-purple); }
.acap-card-orange .acap-bullet-list li::before { color: var(--acap-orange); }
.acap-card-teal   .acap-bullet-list li::before { color: var(--acap-teal); }
.acap-card-indigo .acap-bullet-list li::before { color: var(--acap-indigo); }
.acap-card-pink   .acap-bullet-list li::before { color: var(--acap-pink); }
.acap-card-green  .acap-bullet-list li::before { color: var(--acap-green); }
.acap-card-red    .acap-bullet-list li::before { color: var(--acap-red); }