/* ==========================================================================
   TreePro — AI Estimate Tool
   Mobile-first stylesheet
   ========================================================================== */

/* ---------- Custom properties ---------- */
:root {
  --green-900: #1a3a25;
  --green-700: #2d6a4f;
  --green-600: #3a8a65;
  --green-500: #52b788;
  --green-100: #d8f3dc;
  --green-50:  #f0faf3;

  --brown-800: #5c3d1e;
  --brown-600: #7d5a3c;
  --brown-100: #f5ede3;

  --amber-500: #f59e0b;
  --red-600:   #dc2626;
  --red-50:    #fef2f2;

  --gray-900: #111827;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --gray-50:  #f9fafb;
  --white:    #ffffff;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.06);

  --transition: 180ms ease;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--gray-50);
  min-height: 100vh;
}

img { max-width: 100%; display: block; }
a { color: var(--green-700); }
ul { list-style: none; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px;
}

.hidden { display: none !important; }

/* ---------- Header ---------- */
.site-header {
  background: var(--green-900);
  color: var(--white);
  padding: 14px 0;
  box-shadow: var(--shadow-md);
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon { font-size: 1.5rem; }
.logo-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.5px;
  color: var(--white);
}

.header-tagline {
  font-size: 0.8rem;
  color: var(--green-500);
  font-weight: 500;
  letter-spacing: .3px;
  margin-left: auto;
}

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 36px 0 24px;
}

.hero-title {
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.hero-title span { color: var(--green-700); }

.hero-sub {
  color: var(--gray-700);
  font-size: 1rem;
  max-width: 520px;
  margin: 0 auto 20px;
}

.trust-badges {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--green-700);
}

.trust-badges li span { margin-right: 4px; }

/* ---------- Cards ---------- */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 24px;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 20px;
}

.card-section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ---------- Form elements ---------- */
.fieldset {
  border: none;
  margin-bottom: 24px;
}

.fieldset-legend {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray-700);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 14px;
  width: 100%;
}

.fieldset-hint {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: 12px;
  margin-top: -8px;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (max-width: 420px) {
  .field-row { grid-template-columns: 1fr; }
}

.field { display: flex; flex-direction: column; gap: 4px; }

label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
}

.required { color: var(--red-600); }

input[type="text"],
input[type="tel"],
input[type="email"] {
  height: 44px;
  padding: 0 12px;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

input[type="text"]:focus,
input[type="tel"]:focus,
input[type="email"]:focus {
  outline: none;
  border-color: var(--green-600);
  box-shadow: 0 0 0 3px rgba(45,106,79,.15);
}

input.invalid {
  border-color: var(--red-600);
  box-shadow: 0 0 0 3px rgba(220,38,38,.12);
}

.field-error {
  font-size: 0.8rem;
  color: var(--red-600);
  min-height: 1.1em;
}

/* ---------- Service selector ---------- */
.service-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

@media (max-width: 360px) {
  .service-grid { grid-template-columns: 1fr; }
}

.service-option { cursor: pointer; }

.service-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.service-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 10px;
  border: 2px solid var(--gray-200, #e5e7eb);
  border-radius: var(--radius-md);
  background: var(--white);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
  user-select: none;
  text-align: center;
}

.service-option input:checked + .service-card {
  border-color: var(--green-600);
  background: var(--green-50);
  box-shadow: 0 0 0 3px rgba(45,106,79,.15);
}

.service-option:hover .service-card {
  border-color: var(--green-500);
  background: var(--green-50);
}

.service-option input:focus-visible + .service-card {
  box-shadow: 0 0 0 3px rgba(45,106,79,.3);
}

.service-icon { font-size: 1.5rem; line-height: 1; }
.service-label { font-size: 0.82rem; font-weight: 600; color: var(--gray-700); }

/* ---------- Photo upload ---------- */
.upload-zone {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-md);
  padding: 28px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  position: relative;
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--green-500);
  background: var(--green-50);
}

.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.upload-icon { font-size: 2rem; margin-bottom: 6px; }
.upload-main { font-weight: 600; color: var(--gray-700); margin-bottom: 4px; }
.upload-sub { font-size: 0.8rem; color: var(--gray-500); }

.photo-previews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.preview-item {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--gray-100);
}

.preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0,0,0,.65);
  color: var(--white);
  border: none;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.preview-remove:hover { background: var(--red-600); }

/* ---------- Form privacy note ---------- */
.form-privacy {
  font-size: 0.8rem;
  color: var(--gray-500);
  text-align: center;
  margin-bottom: 16px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font);
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), border-color var(--transition),
              transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  line-height: 1.2;
}

.btn:active { transform: scale(0.98); }
.btn-full { width: 100%; }

.btn-primary {
  background: var(--green-700);
  color: var(--white);
  border-color: var(--green-700);
}

.btn-primary:hover {
  background: var(--green-900);
  border-color: var(--green-900);
  box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
  background: var(--gray-300);
  border-color: var(--gray-300);
  color: var(--gray-500);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-outline {
  background: transparent;
  color: var(--green-700);
  border-color: var(--green-700);
}

.btn-outline:hover {
  background: var(--green-50);
}

/* ---------- Loading ---------- */
.loading-card {
  text-align: center;
  padding: 48px 24px;
}

.loading-inner { display: flex; flex-direction: column; align-items: center; gap: 16px; }

.spinner {
  position: relative;
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.spinner-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 4px solid var(--green-100);
  border-top-color: var(--green-600);
  animation: spin 1s linear infinite;
}

.spinner-tree {
  font-size: 1.8rem;
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .7; transform: scale(0.9); }
}

.loading-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-900);
}

.loading-step {
  font-size: 0.9rem;
  color: var(--gray-500);
  min-height: 1.4em;
  transition: opacity .3s;
}

.loading-steps {
  display: flex;
  gap: 8px;
}

.step-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-300);
  transition: background .3s;
}

.step-dot.active { background: var(--green-600); }

/* ---------- Results ---------- */
.results-header {
  text-align: center;
  padding: 24px 0 4px;
}

.results-check { font-size: 2.4rem; display: block; margin-bottom: 8px; }
.results-header h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 6px; }
.results-sub { color: var(--gray-500); font-size: 0.9rem; margin-bottom: 20px; }

/* Assessment grid */
.assessment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--gray-100);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 16px;
}

.assessment-item {
  background: var(--white);
  padding: 10px 12px;
}

.assessment-item dt {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--gray-500);
  margin-bottom: 2px;
}

.assessment-item dd {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--gray-900);
}

/* Condition color coding */
.condition-healthy { color: var(--green-700); }
.condition-fair    { color: var(--amber-500); }
.condition-poor    { color: #ea580c; }
.condition-hazardous { color: var(--red-600); }

/* Complexity color coding */
.complexity-low     { color: var(--green-700); }
.complexity-medium  { color: var(--amber-500); }
.complexity-high    { color: #ea580c; }
.complexity-very-high { color: var(--red-600); }

/* Tags */
.tag-list-wrap { margin-bottom: 14px; }
.tag-list-label { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; color: var(--gray-500); margin-bottom: 8px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-list li {
  background: var(--green-100);
  color: var(--green-900);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 999px;
}

/* Safety alert */
.safety-alert {
  background: var(--red-50);
  border: 1.5px solid #fca5a5;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-top: 4px;
}

.safety-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--red-600);
  margin-bottom: 6px;
}

.safety-list { padding-left: 0; }
.safety-list li {
  font-size: 0.875rem;
  color: #7f1d1d;
  padding: 2px 0 2px 18px;
  position: relative;
}

.safety-list li::before {
  content: '•';
  position: absolute;
  left: 6px;
  color: var(--red-600);
}

/* Estimate table */
.estimate-card { padding-top: 20px; }

.service-badge {
  background: var(--green-100);
  color: var(--green-900);
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: 600;
  text-transform: capitalize;
}

.line-items {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 14px;
  font-size: 0.9rem;
}

.line-items th, .line-items td {
  padding: 9px 0;
  border-bottom: 1px solid var(--gray-100);
  text-align: left;
}

.line-items thead th {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--gray-500);
  padding-bottom: 10px;
}

.col-price { text-align: right; white-space: nowrap; }

.total-row th, .total-row td {
  padding-top: 12px;
  border-bottom: none;
  font-size: 1rem;
  font-weight: 800;
  color: var(--gray-900);
}

.total-range { color: var(--green-700); font-size: 1.1rem; }

.estimate-notes {
  font-size: 0.875rem;
  color: var(--gray-500);
  font-style: italic;
  margin-bottom: 14px;
  line-height: 1.5;
}

.disclaimer {
  background: var(--gray-50);
  border-left: 3px solid var(--green-500);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 14px;
  font-size: 0.8rem;
  color: var(--gray-600, #4b5563);
  line-height: 1.5;
}

/* CTA card */
.cta-card {
  text-align: center;
  background: var(--green-900);
  color: var(--white);
}

.cta-card .card-section-title { color: var(--white); justify-content: center; }
.cta-title { font-size: 1.2rem; font-weight: 800; margin-bottom: 8px; color: var(--white); }
.cta-body { font-size: 0.9rem; color: var(--green-100); margin-bottom: 20px; line-height: 1.5; }

.cta-card .btn-primary {
  background: var(--white);
  color: var(--green-900);
  border-color: var(--white);
  font-size: 1.05rem;
}

.cta-card .btn-primary:hover {
  background: var(--green-100);
  border-color: var(--green-100);
}

.cta-or {
  color: var(--green-500);
  font-size: 0.85rem;
  margin: 12px 0;
}

.cta-card .btn-outline {
  color: var(--green-100);
  border-color: var(--green-600);
}

.cta-card .btn-outline:hover {
  background: rgba(255,255,255,.08);
}

/* Error card */
.error-card {
  text-align: center;
  border: 2px solid #fca5a5;
}

.error-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--red-600);
  margin-bottom: 8px;
}

.error-msg {
  color: var(--gray-700);
  margin-bottom: 16px;
  font-size: 0.9rem;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--green-900);
  color: var(--green-100);
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
  font-size: 0.8rem;
}

.footer-fine {
  color: var(--green-500);
  margin-top: 4px;
  font-size: 0.75rem;
}

/* ---------- Utility ---------- */
#footer-year { font-variant-numeric: tabular-nums; }

/* Focus-visible polish for keyboard nav */
:focus-visible {
  outline: 3px solid var(--green-500);
  outline-offset: 2px;
}