/* FastEstimate — Brand: Black, Orange (#FF6B00), White, Dark Gray */
:root {
  --orange: #FF6B00;
  --orange-dark: #E55A00;
  --orange-light: #FF8C33;
  --black: #0A0A0A;
  --dark: #141414;
  --dark-card: #1C1C1C;
  --dark-border: #2A2A2A;
  --gray: #888;
  --gray-light: #B0B0B0;
  --white: #FFFFFF;
  --green: #22C55E;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-orange: 0 4px 24px rgba(255,107,0,0.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--black); color: var(--white);
  line-height: 1.6; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
button { font-family: var(--font); cursor: pointer; border: none; }
input, select, textarea { font-family: var(--font); }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 28px; border-radius: var(--radius-sm); font-weight: 600;
  font-size: 1rem; transition: all 0.15s ease; text-decoration: none; cursor: pointer;
  white-space: nowrap; border: 2px solid transparent;
}
.btn-primary { background: var(--orange); color: var(--white); box-shadow: var(--shadow-orange); }
.btn-primary:hover { background: var(--orange-dark); transform: translateY(-1px); }
.btn-secondary { background: var(--dark-card); color: var(--white); border-color: var(--dark-border); }
.btn-secondary:hover { border-color: var(--orange); color: var(--orange); }
.btn-sm { padding: 10px 20px; font-size: 0.875rem; }
.btn-lg { padding: 18px 36px; font-size: 1.125rem; }
.btn-xl { padding: 20px 40px; font-size: 1.125rem; font-weight: 700; }
.btn-full { width: 100%; display: flex; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,10,0.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dark-border); padding: 16px 0;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-brand { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.02em; }

/* Hero */
.hero { padding: 100px 0 80px; text-align: center; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,107,0,0.12); border: 1px solid rgba(255,107,0,0.3);
  color: var(--orange-light); padding: 8px 16px; border-radius: 100px;
  font-size: 0.875rem; font-weight: 500; margin-bottom: 28px;
}
.badge-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--orange);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem); font-weight: 900;
  line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 24px;
}
.text-orange { color: var(--orange); }
.hero-sub { font-size: 1.15rem; color: var(--gray-light); max-width: 600px; margin: 0 auto 36px; line-height: 1.7; }
.hero-ctas { display: flex; flex-direction: column; align-items: center; gap: 12px; margin-bottom: 60px; }
.hero-footnote { font-size: 0.85rem; color: var(--gray); }
.hero-stats { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; }
.hero-stat { text-align: center; padding: 20px 40px; }
.hero-stat-divider { width: 1px; height: 48px; background: var(--dark-border); }
.stat-num { font-size: 2.5rem; font-weight: 900; color: var(--orange); letter-spacing: -0.03em; }
.stat-label { font-size: 0.8rem; color: var(--gray); font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; margin-top: 4px; }

/* Section Commons */
.section-header { text-align: center; margin-bottom: 56px; }
.section-label {
  display: inline-block; color: var(--orange); font-size: 0.8rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 800;
  letter-spacing: -0.02em; line-height: 1.2;
}
.section-desc { color: var(--gray-light); margin-top: 16px; max-width: 560px; margin-left: auto; margin-right: auto; }

/* Features */
.features { padding: 80px 0; background: var(--dark); }
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.feature-card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: var(--radius); padding: 28px; transition: border-color 0.15s, transform 0.15s;
}
.feature-card:hover { border-color: rgba(255,107,0,0.4); transform: translateY(-2px); }
.feature-icon { font-size: 1.75rem; margin-bottom: 14px; }
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: var(--gray-light); line-height: 1.6; }

/* Estimate Form */
.estimate-section { padding: 80px 0; }
.form-card {
  background: var(--dark-card); border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg); padding: 40px; max-width: 800px; margin: 0 auto;
}
.form-section-title {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--orange); margin-bottom: 20px; padding-bottom: 12px;
  border-bottom: 1px solid var(--dark-border);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 0.875rem; font-weight: 600; color: var(--gray-light); }
.req { color: var(--orange); }
.form-group input, .form-group select, .form-group textarea {
  background: var(--dark); border: 1px solid var(--dark-border);
  color: var(--white); padding: 12px 14px; border-radius: var(--radius-sm);
  font-size: 0.95rem; transition: border-color 0.15s; outline: none; width: 100%;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--orange); }
.form-group input::placeholder, .form-group textarea::placeholder { color: #555; }
.form-group select option { background: var(--dark); }
.form-group textarea { resize: vertical; min-height: 100px; }
.btn-generate { width: 100%; margin-top: 8px; font-size: 1.1rem; }
.btn-icon { font-size: 1.2rem; }
.form-footnote { text-align: center; font-size: 0.8rem; color: var(--gray); margin-top: 12px; }

/* Loading */
.loading-state { text-align: center; padding: 80px 24px; max-width: 800px; margin: 0 auto; }
.loading-spinner {
  width: 56px; height: 56px; border: 4px solid var(--dark-border);
  border-top-color: var(--orange); border-radius: 50%;
  animation: spin 0.8s linear infinite; margin: 0 auto 24px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-size: 1.25rem; font-weight: 700; margin-bottom: 8px; }
.loading-sub { color: var(--gray-light); font-size: 0.9rem; }

/* Results */
.results-container { max-width: 900px; margin: 0 auto; }
.results-header { text-align: center; margin-bottom: 40px; }
.results-success-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.3);
  color: var(--green); padding: 8px 16px; border-radius: 100px;
  font-size: 0.85rem; font-weight: 600; margin-bottom: 16px;
}
.results-title { font-size: 2rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 8px; }
.results-subtitle { color: var(--gray-light); font-size: 0.9rem; }
.outputs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.output-card--wide { grid-column: 1 / -1; }
.output-card { background: var(--dark-card); border: 1px solid var(--dark-border); border-radius: var(--radius); overflow: hidden; }
.output-card--highlight { border-color: rgba(255,107,0,0.4); }
.output-card-header {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px; border-bottom: 1px solid var(--dark-border);
  background: rgba(255,255,255,0.03);
}
.output-icon { font-size: 1.5rem; flex-shrink: 0; }
.output-card-header > div:nth-child(2) { flex: 1; }
.output-card-title { font-size: 0.95rem; font-weight: 700; }
.output-card-desc { font-size: 0.8rem; color: var(--gray); margin-top: 2px; }
.output-body { padding: 16px 20px; font-size: 0.9rem; color: var(--gray-light); line-height: 1.7; white-space: pre-wrap; }
.copy-btn {
  padding: 8px 14px; border-radius: var(--radius-sm);
  background: var(--dark); border: 1px solid var(--dark-border);
  color: var(--gray-light); font-size: 0.8rem; font-weight: 600;
  transition: all 0.15s; flex-shrink: 0;
}
.copy-btn:hover { border-color: var(--orange); color: var(--orange); }
.copy-btn.copied { background: rgba(34,197,94,0.1); border-color: rgba(34,197,94,0.4); color: var(--green); }
.materials-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.materials-table th { text-align: left; padding: 8px 12px; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gray); border-bottom: 1px solid var(--dark-border); }
.materials-table td { padding: 8px 12px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.materials-table tr:last-child td { border-bottom: none; }
.results-actions { display: flex; gap: 16px; justify-content: center; margin-top: 32px; flex-wrap: wrap; }

/* Upgrade Prompt */
.upgrade-prompt { max-width: 520px; margin: 0 auto; text-align: center; padding: 40px 0; }
.upgrade-prompt-inner {
  background: var(--dark-card); border: 1px solid rgba(255,107,0,0.3);
  border-radius: var(--radius-lg); padding: 48px 40px;
}
.upgrade-icon { font-size: 3rem; margin-bottom: 20px; }
.upgrade-prompt-inner h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 12px; }
.upgrade-prompt-inner p { color: var(--gray-light); margin-bottom: 28px; }
.upgrade-footnote { font-size: 0.8rem; color: var(--gray); margin-top: 12px; }

/* Error State */
.error-state { text-align: center; padding: 60px 24px; max-width: 800px; margin: 0 auto; }
.error-icon { font-size: 2.5rem; margin-bottom: 16px; }
.error-text { color: var(--gray-light); margin-bottom: 24px; }

/* Pricing */
.pricing { padding: 80px 0; background: var(--dark); }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 780px; margin: 0 auto; }
.pricing-card { background: var(--dark-card); border: 1px solid var(--dark-border); border-radius: var(--radius-lg); padding: 40px; position: relative; }
.pricing-card--featured { border-color: var(--orange); box-shadow: var(--shadow-orange); }
.pricing-badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--orange); color: var(--white); padding: 4px 16px;
  border-radius: 100px; font-size: 0.75rem; font-weight: 700; white-space: nowrap;
}
.pricing-tier { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: var(--gray); margin-bottom: 8px; }
.pricing-price { font-size: 3rem; font-weight: 900; letter-spacing: -0.04em; margin-bottom: 8px; }
.pricing-period { font-size: 1rem; font-weight: 500; color: var(--gray); }
.pricing-desc { color: var(--gray-light); font-size: 0.9rem; margin-bottom: 24px; line-height: 1.5; }
.pricing-features { list-style: none; margin-bottom: 32px; }
.pricing-features li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; font-size: 0.9rem; }
.check { color: var(--green); font-weight: 700; flex-shrink: 0; }

/* Upgrade Page */
.upgrade-page { min-height: calc(100vh - 80px); display: flex; align-items: center; padding: 60px 0; }
.upgrade-card {
  max-width: 520px; margin: 0 auto; text-align: center;
  background: var(--dark-card); border: 1px solid rgba(255,107,0,0.3);
  border-radius: var(--radius-lg); padding: 56px 48px;
}
.upgrade-icon-large { font-size: 3.5rem; margin-bottom: 24px; }
.upgrade-card h1 { font-size: 1.875rem; font-weight: 800; margin-bottom: 16px; }
.upgrade-desc { color: var(--gray-light); margin-bottom: 32px; line-height: 1.6; }
.upgrade-features { text-align: left; margin-bottom: 32px; }
.upgrade-feature { display: flex; gap: 10px; align-items: flex-start; font-size: 0.9rem; margin-bottom: 10px; color: var(--gray-light); }
.upgrade-price-block { margin-bottom: 28px; }
.upgrade-price { font-size: 3.5rem; font-weight: 900; letter-spacing: -0.04em; }
.upgrade-period { font-size: 1.1rem; color: var(--gray); }
.upgrade-cta-btn { margin-bottom: 12px; }
.upgrade-footnote-small { font-size: 0.8rem; color: var(--gray); margin-bottom: 24px; }
.back-link { color: var(--gray); font-size: 0.875rem; }
.back-link:hover { color: var(--orange); }

/* Footer */
.footer { background: var(--dark); border-top: 1px solid var(--dark-border); padding: 40px 0 24px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; flex-wrap: wrap; gap: 16px; }
.footer-brand { display: flex; flex-direction: column; gap: 4px; }
.footer-logo { font-weight: 800; font-size: 1.1rem; }
.footer-tagline { font-size: 0.8rem; color: var(--gray); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 0.875rem; color: var(--gray); transition: color 0.15s; }
.footer-links a:hover { color: var(--orange); }
.footer-bottom { border-top: 1px solid var(--dark-border); padding-top: 20px; }
.footer-bottom p { font-size: 0.8rem; color: #555; }

/* Responsive */
@media (max-width: 768px) {
  .hero { padding: 60px 0 50px; }
  .hero-title { font-size: 2.25rem; }
  .hero-sub { font-size: 1rem; }
  .hero-stat { padding: 16px 20px; }
  .stat-num { font-size: 1.75rem; }
  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .outputs-grid { grid-template-columns: 1fr; }
  .output-card--wide { grid-column: 1; }
  .pricing-grid { grid-template-columns: 1fr; }
  .results-actions { flex-direction: column; align-items: stretch; }
  .upgrade-card { padding: 36px 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}