/* Plumbing Paramedic — App Styles
   Dark theme matching the landing page design tokens.
   Extends the base nav/hero tokens from the landing page CSS.
*/

:root {
  --bg: #0c0f14;
  --bg-surface: #131720;
  --bg-surface-2: #1a2130;
  --fg: #f0ede8;
  --fg-muted: #8a8580;
  --accent: #f5a623;
  --accent-dim: rgba(245, 166, 35, 0.12);
  --accent-border: rgba(245, 166, 35, 0.25);
  --border: rgba(240, 237, 232, 0.08);
  --border-hover: rgba(240, 237, 232, 0.16);
  --success: #4ade80;
  --card-radius: 8px;
}

/* NAV */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(12, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav-logo-sub {
  color: var(--accent);
  font-size: 0.75rem;
  vertical-align: super;
  margin-left: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-link {
  font-size: 0.875rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-link:hover, .nav-link.active { color: var(--fg); }
.nav-link.active { color: var(--accent); }

/* PAGE LAYOUT */
.app-wrapper {
  padding-top: 60px; /* nav height */
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', system-ui, sans-serif;
}

.app-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

/* PAGE HEADER */
.page-header {
  margin-bottom: 40px;
}
.page-title {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--fg);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 12px;
}
.page-subtitle {
  font-size: 1rem;
  color: var(--fg-muted);
  margin: 0;
  line-height: 1.5;
}

/* SECTION LABEL */
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}

/* FORM SECTION */
.form-section {
  margin-bottom: 36px;
}
.form-section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
  margin: 0 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* SELECT */
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  color: var(--fg);
  font-size: 0.9375rem;
  font-family: 'DM Sans', system-ui, sans-serif;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a8580' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  transition: border-color 0.2s;
}
.form-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* COMPLEXITY CARDS */
.complexity-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.complexity-card {
  position: relative;
}
.complexity-card input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.complexity-card label {
  display: block;
  padding: 16px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s, background 0.2s;
}
.complexity-card label:hover {
  border-color: var(--border-hover);
  background: var(--bg-surface-2);
}
.complexity-card input:checked + label {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.complexity-card-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 4px;
}
.complexity-card-desc {
  font-size: 0.75rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

/* PARTS CHECKBOXES */
.parts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.parts-check {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 0.2s;
}
.parts-check:hover { border-color: var(--border-hover); }
.parts-check input:checked ~ * { color: var(--accent); }
.parts-check-check {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: transparent;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s;
}
.parts-check input:checked + .parts-check-check {
  background: var(--accent);
  border-color: var(--accent);
}
.parts-check input { display: none; }
.parts-check-label {
  font-size: 0.875rem;
  color: var(--fg);
  cursor: pointer;
}

/* BUTTON */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--accent);
  color: #0c0f14;
  font-size: 0.9375rem;
  font-weight: 700;
  font-family: 'DM Sans', system-ui, sans-serif;
  border: none;
  border-radius: var(--card-radius);
  cursor: pointer;
  transition: background 0.2s;
  letter-spacing: -0.01em;
}
.btn:hover { background: #e8961a; }
.btn:active { background: #d4881a; }
.btn-secondary {
  background: var(--bg-surface-2);
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg-surface); border-color: var(--border-hover); }

.btn-row {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}

/* ERROR */
.error-banner {
  padding: 12px 16px;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 6px;
  color: #fca5a5;
  font-size: 0.875rem;
  margin-bottom: 24px;
}

/* RESULT — TIER CARDS */
.result-header {
  margin-bottom: 28px;
}
.result-header-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 4px;
}
.result-service {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.result-meta {
  font-size: 0.875rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}
.tier-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 24px 20px;
  position: relative;
}
.tier-card.tier-best {
  border-color: var(--accent-border);
  background: var(--accent-dim);
}
.tier-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 3px;
  margin-bottom: 12px;
  display: inline-block;
}
.tier-good .tier-badge  { background: var(--bg-surface-2); color: var(--fg-muted); }
.tier-better .tier-badge { background: rgba(74, 222, 128, 0.15); color: #4ade80; }
.tier-best .tier-badge   { background: var(--accent-dim); color: var(--accent); }

.tier-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 4px;
}
.tier-desc {
  font-size: 0.8125rem;
  color: var(--fg-muted);
  line-height: 1.4;
  margin-bottom: 20px;
  min-height: 44px;
}
.tier-price {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 2rem;
  font-weight: 900;
  color: var(--fg);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 4px;
}
.tier-breakdown {
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-bottom: 16px;
}
.tier-cta {
  display: block;
  text-align: center;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg-muted);
  font-size: 0.8125rem;
  font-family: 'DM Sans', system-ui, sans-serif;
  cursor: pointer;
  transition: all 0.2s;
  width: 100%;
  margin-top: auto;
}
.tier-best .tier-cta {
  background: var(--accent);
  border-color: var(--accent);
  color: #0c0f14;
  font-weight: 700;
}
.tier-best .tier-cta:hover { background: #e8961a; }

/* SHAREABLE OUTPUT */
.output-section { margin-top: 40px; }
.output-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 12px;
}
.output-box {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 20px;
  font-size: 0.875rem;
  color: var(--fg);
  line-height: 1.7;
  white-space: pre-wrap;
  font-family: 'DM Mono', 'Fira Code', monospace;
}
.output-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}
.copy-btn, .email-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--bg-surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg-muted);
  font-size: 0.8125rem;
  font-family: 'DM Sans', system-ui, sans-serif;
  cursor: pointer;
  transition: all 0.2s;
}
.copy-btn:hover, .email-btn:hover {
  border-color: var(--border-hover);
  color: var(--fg);
}
.copy-btn.copied {
  background: rgba(74, 222, 128, 0.15);
  border-color: rgba(74, 222, 128, 0.3);
  color: #4ade80;
}

/* Reset button */
.reset-link {
  display: inline-block;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.reset-link:hover { color: var(--fg); }

/* Utility */
.hide { display: none; }

/* Mobile */
@media (max-width: 640px) {
  .complexity-cards { grid-template-columns: 1fr; }
  .tier-grid { grid-template-columns: 1fr; }
  .parts-grid { grid-template-columns: 1fr; }
  .app-container { padding: 32px 16px 60px; }
  .page-title { font-size: 1.75rem; }
}