/* ============================================
   TCS AI Trade Tools — Shared Styles
   ============================================ */

:root {
  --tcs-navy: #0f172a;
  --tcs-dark: #1e293b;
  --tcs-blue: #00d4ff;
  --tcs-blue-dark: #0099cc;
  --tcs-orange: #e67e22;
  --tcs-orange-dark: #d35400;
  --tcs-green: #10b981;
  --tcs-red: #ef4444;
  --tcs-yellow: #f59e0b;
  --tcs-purple: #8b5cf6;
  --tcs-text: #e2e8f0;
  --tcs-text-muted: #94a3b8;
  --tcs-card-bg: #1e293b;
  --tcs-border: #334155;
  --tcs-radius: 12px;
  --tcs-radius-sm: 8px;
  --tcs-shadow: 0 4px 20px rgba(0,0,0,0.3);
  --tcs-transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Poppins', 'Segoe UI', sans-serif;
  background: var(--tcs-navy);
  color: var(--tcs-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ---- HEADER ---- */
.tools-header {
  background: linear-gradient(135deg, var(--tcs-navy), var(--tcs-dark));
  border-bottom: 1px solid var(--tcs-border);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.tools-header .logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.tools-header .logo-group img {
  height: 40px;
  width: auto;
}

.tools-header .logo-group .brand {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  color: white;
}

.tools-header .logo-group .brand span {
  color: var(--tcs-blue);
  font-weight: 400;
  font-size: 0.75rem;
  display: block;
  font-family: 'Poppins', sans-serif;
  letter-spacing: 0.5px;
}

.tools-header nav {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.tools-header nav a {
  color: var(--tcs-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 0.4rem 0.75rem;
  border-radius: var(--tcs-radius-sm);
  transition: var(--tcs-transition);
}

.tools-header nav a:hover {
  color: white;
  background: rgba(255,255,255,0.08);
}

.tools-header nav a.active {
  color: var(--tcs-blue);
  background: rgba(0,212,255,0.1);
}

/* ---- PAGE LAYOUT ---- */
.tool-page {
  flex: 1;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.tool-hero {
  text-align: center;
  margin-bottom: 2rem;
  padding: 1.5rem 0;
}

.tool-hero .tool-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
  display: block;
}

.tool-hero h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.6rem;
  color: white;
  margin-bottom: 0.5rem;
}

.tool-hero p {
  color: var(--tcs-text-muted);
  font-size: 0.95rem;
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---- CARDS ---- */
.tool-card {
  background: var(--tcs-card-bg);
  border: 1px solid var(--tcs-border);
  border-radius: var(--tcs-radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--tcs-shadow);
}

.tool-card h2, .tool-card h3 {
  font-size: 1rem;
  color: white;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ---- UPLOAD ZONE ---- */
.upload-zone {
  border: 2px dashed var(--tcs-border);
  border-radius: var(--tcs-radius);
  padding: 2.5rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: var(--tcs-transition);
  position: relative;
  overflow: hidden;
  background: rgba(0,0,0,0.15);
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--tcs-blue);
  background: rgba(0,212,255,0.05);
}

.upload-zone.has-image {
  padding: 0;
  border-style: solid;
}

.upload-zone .upload-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  display: block;
}

.upload-zone .upload-text {
  color: var(--tcs-text-muted);
  font-size: 0.9rem;
}

.upload-zone .upload-text strong {
  color: var(--tcs-blue);
}

.upload-zone input[type="file"] {
  display: none;
}

.upload-zone img.preview {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  display: block;
  border-radius: var(--tcs-radius);
}

.upload-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: var(--tcs-radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--tcs-transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--tcs-blue), var(--tcs-blue-dark));
  color: white;
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(0,212,255,0.3);
}

.btn-secondary {
  background: rgba(255,255,255,0.08);
  color: var(--tcs-text);
  border: 1px solid var(--tcs-border);
}
.btn-secondary:hover:not(:disabled) {
  background: rgba(255,255,255,0.12);
}

.btn-orange {
  background: linear-gradient(135deg, var(--tcs-orange), var(--tcs-orange-dark));
  color: white;
}
.btn-orange:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(230,126,34,0.3);
}

.btn-green {
  background: linear-gradient(135deg, var(--tcs-green), #059669);
  color: white;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 0.85rem 2rem;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

.btn-camera {
  background: rgba(255,255,255,0.08);
  color: var(--tcs-text);
  border: 1px solid var(--tcs-border);
  flex: 1;
}

/* ---- FORM ELEMENTS ---- */
label.field-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--tcs-text-muted);
  margin-bottom: 0.4rem;
}

input[type="text"],
input[type="number"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--tcs-border);
  border-radius: var(--tcs-radius-sm);
  color: var(--tcs-text);
  font-family: inherit;
  font-size: 0.9rem;
  transition: var(--tcs-transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--tcs-blue);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.15);
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 12L2 6h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  margin-bottom: 1rem;
}

/* ---- COLOR PICKER ---- */
.color-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.color-swatch {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--tcs-transition);
  position: relative;
}

.color-swatch:hover {
  transform: scale(1.15);
}

.color-swatch.selected {
  border-color: white;
  box-shadow: 0 0 0 2px var(--tcs-blue);
}

.color-swatch.selected::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.color-hex-input {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.color-hex-input input[type="color"] {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: none;
  padding: 0;
}

/* ---- OPTIONS GRID ---- */
.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.option-card {
  background: rgba(0,0,0,0.2);
  border: 2px solid var(--tcs-border);
  border-radius: var(--tcs-radius-sm);
  padding: 1rem 0.75rem;
  text-align: center;
  cursor: pointer;
  transition: var(--tcs-transition);
}

.option-card:hover {
  border-color: rgba(0,212,255,0.3);
  background: rgba(0,212,255,0.05);
}

.option-card.selected {
  border-color: var(--tcs-blue);
  background: rgba(0,212,255,0.1);
}

.option-card .opt-icon {
  font-size: 1.8rem;
  margin-bottom: 0.4rem;
  display: block;
}

.option-card .opt-label {
  font-size: 0.8rem;
  color: var(--tcs-text-muted);
}

.option-card.selected .opt-label {
  color: white;
}

/* ---- LOADING ---- */
.loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.85);
  backdrop-filter: blur(6px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
}

.loading-overlay.active {
  display: flex;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--tcs-border);
  border-top-color: var(--tcs-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-text {
  color: var(--tcs-text-muted);
  font-size: 0.95rem;
  text-align: center;
}

.loading-text strong {
  color: var(--tcs-blue);
  display: block;
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

/* ---- RESULTS ---- */
.results-section {
  display: none;
}

.results-section.visible {
  display: block;
  animation: fadeUp 0.4s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-image-wrap {
  position: relative;
  border-radius: var(--tcs-radius);
  overflow: hidden;
  margin-bottom: 1rem;
}

.result-image-wrap canvas,
.result-image-wrap img {
  width: 100%;
  display: block;
  border-radius: var(--tcs-radius);
}

.result-text {
  background: rgba(0,0,0,0.2);
  border-radius: var(--tcs-radius-sm);
  padding: 1.25rem;
  line-height: 1.7;
  font-size: 0.9rem;
}

.result-text h3 {
  color: var(--tcs-blue);
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.result-text ul {
  padding-left: 1.25rem;
  margin: 0.5rem 0;
}

.result-text li {
  margin-bottom: 0.3rem;
}

/* Severity badges */
.severity {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

.severity-cosmetic { background: rgba(16,185,129,0.15); color: var(--tcs-green); }
.severity-moderate { background: rgba(245,158,11,0.15); color: var(--tcs-yellow); }
.severity-urgent   { background: rgba(239,68,68,0.15); color: var(--tcs-red); }

/* Stat cards */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.stat-card {
  background: rgba(0,0,0,0.2);
  border: 1px solid var(--tcs-border);
  border-radius: var(--tcs-radius-sm);
  padding: 1rem;
  text-align: center;
}

.stat-card .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--tcs-blue);
  display: block;
}

.stat-card .stat-label {
  font-size: 0.75rem;
  color: var(--tcs-text-muted);
  margin-top: 0.25rem;
  display: block;
}

/* ---- CTA SECTION ---- */
.cta-section {
  background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(139,92,246,0.1));
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: var(--tcs-radius);
  padding: 1.5rem;
  text-align: center;
  margin-top: 1.5rem;
}

.cta-section h3 {
  color: white;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.cta-section p {
  color: var(--tcs-text-muted);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.cta-buttons {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- FOOTER ---- */
.tools-footer {
  background: linear-gradient(135deg, #1a1a3d, var(--tcs-blue-dark));
  color: white;
  padding: 2rem 1.25rem 1rem;
  margin-top: auto;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
}

.footer-col h4 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
  transition: var(--tcs-transition);
}

.footer-col a:hover { color: white; }

.footer-bottom {
  max-width: 900px;
  margin: 1.5rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.15);
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 640px) {
  .tool-hero h1 { font-size: 1.3rem; }
  .form-row { grid-template-columns: 1fr; }
  .options-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .tools-header nav { display: none; }
  .upload-zone { padding: 2rem 1rem; }
  .tool-card { padding: 1.25rem; }
}

@media (max-width: 380px) {
  .options-grid { grid-template-columns: 1fr 1fr; }
  .color-swatch { width: 34px; height: 34px; }
}

/* ---- PRINT ---- */
@media print {
  .tools-header, .tools-footer, .cta-section, .upload-zone, .btn, .loading-overlay { display: none !important; }
  body { background: white; color: #333; }
  .tool-card { border: 1px solid #ddd; box-shadow: none; background: white; }
  .stat-card .stat-value { color: #0099cc; }
}

/* ---- MISC ---- */
.hidden { display: none !important; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.text-center { text-align: center; }
.text-muted { color: var(--tcs-text-muted); }
.text-sm { font-size: 0.85rem; }

/* Canvas overlay for paint/tile visualizer */
.canvas-container {
  position: relative;
  display: inline-block;
  width: 100%;
}

.canvas-container canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.canvas-container img {
  width: 100%;
  display: block;
}

/* Comparison slider */
.comparison-wrap {
  position: relative;
  overflow: hidden;
  border-radius: var(--tcs-radius);
  cursor: ew-resize;
  user-select: none;
}

.comparison-wrap .before-label,
.comparison-wrap .after-label {
  position: absolute;
  top: 0.75rem;
  padding: 0.25rem 0.75rem;
  background: rgba(0,0,0,0.6);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  z-index: 2;
}

.comparison-wrap .before-label { left: 0.75rem; }
.comparison-wrap .after-label { right: 0.75rem; }

/* Quote sheet */
.quote-sheet {
  background: white;
  color: #333;
  padding: 2rem;
  border-radius: var(--tcs-radius);
  font-size: 0.9rem;
}

.quote-sheet h2 {
  color: var(--tcs-navy);
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--tcs-blue);
}

.quote-sheet table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
}

.quote-sheet th, .quote-sheet td {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.85rem;
}

.quote-sheet th {
  background: #f1f5f9;
  font-weight: 600;
  color: #475569;
}

.quote-sheet .total-row td {
  font-weight: 700;
  font-size: 1rem;
  border-top: 2px solid var(--tcs-navy);
  color: var(--tcs-navy);
}