@import url('https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700&family=Geist+Mono:wght@400;500;600&display=swap');

:root {
  --ppc-bg:              #FAF9F6;
  --ppc-panel-bg:        #FFFFFF;
  --ppc-border:          rgba(15, 23, 42, 0.08);
  --ppc-divider:         rgba(15, 23, 42, 0.06);
  --ppc-ink:             #0F172A;
  --ppc-ink-1:           #1E293B;
  --ppc-ink-2:           #475569;
  --ppc-ink-3:           #94A3B8;
  --ppc-ink-4:           #CBD5E1;
  --ppc-accent:          #B8860B;
  --ppc-accent-deep:     #9A6F08;
  --ppc-accent-bg:       rgba(184, 134, 11, 0.08);
  --ppc-hover:           rgba(15, 23, 42, 0.04);
  --ppc-success:         #059669;
  --ppc-warning:         #D97706;
  --ppc-danger:          #B91C1C;
  --ppc-shadow-sm:       0 1px 2px rgba(15, 23, 42, 0.05);
  --ppc-shadow-md:       0 4px 14px rgba(15, 23, 42, 0.07);
  --ppc-shadow-lg:       0 10px 30px rgba(15, 23, 42, 0.10);
  --ppc-radius:          12px;
  --ppc-radius-sm:       8px;
  --t-fast:              140ms cubic-bezier(.4, 0, .2, 1);
}

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

html, body {
  font-family: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--ppc-bg);
  color: var(--ppc-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: -0.005em;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

/* ============== HEADER ============== */

.ppc-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 246, 0.92);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--ppc-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
}

.ppc-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ppc-ink-1);
  padding: 6px 10px;
  border-radius: var(--ppc-radius-sm);
  transition: background var(--t-fast), color var(--t-fast);
}
.ppc-back:hover {
  background: var(--ppc-hover);
  color: var(--ppc-accent);
}
.ppc-back svg { flex-shrink: 0; }

.ppc-brand {
  font-size: 13px;
  font-weight: 600;
  color: var(--ppc-ink-2);
  letter-spacing: -0.01em;
}

/* ============== MAIN LAYOUT ============== */

.ppc-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.ppc-intro {
  margin-bottom: 28px;
  text-align: left;
}
.ppc-intro h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--ppc-ink);
  margin-bottom: 10px;
}
.ppc-intro p {
  font-size: 15px;
  color: var(--ppc-ink-2);
  max-width: 640px;
  line-height: 1.55;
}

/* ============== FORM CARD ============== */

.ppc-form-card {
  background: var(--ppc-panel-bg);
  border: 1px solid var(--ppc-border);
  border-radius: var(--ppc-radius);
  box-shadow: var(--ppc-shadow-md);
  padding: 28px;
  margin-bottom: 28px;
}

.ppc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.ppc-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ppc-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--ppc-ink-2);
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.ppc-label-unit {
  color: var(--ppc-ink-3);
  font-weight: 400;
  font-size: 11px;
}
.ppc-label-opt {
  color: var(--ppc-ink-3);
  font-weight: 400;
  font-size: 10.5px;
  font-style: italic;
}

.ppc-field input,
.ppc-field select {
  font-family: 'Geist', sans-serif;
  font-size: 14px;
  color: var(--ppc-ink);
  background: #FFFFFF;
  border: 1px solid var(--ppc-border);
  border-radius: var(--ppc-radius-sm);
  padding: 9px 12px;
  width: 100%;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  appearance: none;
  -webkit-appearance: none;
}
.ppc-field select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 16 16' fill='none' stroke='%23475569' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'><path d='M4 6l4 4 4-4'/></svg>");
  background-repeat: no-repeat;
  background-position: right 11px center;
  padding-right: 32px;
}
.ppc-field input:focus,
.ppc-field select:focus {
  outline: none;
  border-color: var(--ppc-accent);
  box-shadow: 0 0 0 3px var(--ppc-accent-bg);
}
.ppc-field input:disabled,
.ppc-field select:disabled {
  background: #F8F8F6;
  color: var(--ppc-ink-3);
  cursor: not-allowed;
}

/* ============== SUBMIT ============== */

.ppc-submit {
  width: 100%;
  padding: 13px 18px;
  border: none;
  border-radius: var(--ppc-radius-sm);
  background: var(--ppc-ink);
  color: #FFF;
  font-family: 'Geist', sans-serif;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition: background var(--t-fast), transform var(--t-fast), opacity var(--t-fast);
}
.ppc-submit:hover:not(:disabled) {
  background: var(--ppc-accent-deep);
}
.ppc-submit:active:not(:disabled) {
  transform: translateY(1px);
}
.ppc-submit:disabled {
  background: var(--ppc-ink-3);
  cursor: not-allowed;
  opacity: 0.7;
}

.ppc-status {
  margin-top: 12px;
  text-align: center;
  font-size: 12px;
  color: var(--ppc-ink-2);
  letter-spacing: 0.005em;
  min-height: 18px;
}
.ppc-status.is-error {
  color: var(--ppc-danger);
}
.ppc-status.is-success {
  color: var(--ppc-success);
}

/* ============== RESULT ============== */

.ppc-result {
  animation: ppcResultIn 360ms cubic-bezier(.4,0,.2,1);
}

@keyframes ppcResultIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ppc-result-summary {
  background: var(--ppc-panel-bg);
  border: 1px solid var(--ppc-border);
  border-radius: var(--ppc-radius);
  box-shadow: var(--ppc-shadow-md);
  padding: 28px;
  margin-bottom: 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
}

.ppc-estimate,
.ppc-rsm2 {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ppc-est-label,
.ppc-rsm2-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--ppc-ink-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.ppc-est-median {
  font-family: 'Geist Mono', monospace;
  font-size: 26px;
  font-weight: 700;
  color: var(--ppc-ink);
  letter-spacing: -0.02em;
  font-feature-settings: 'tnum' 1;
  line-height: 1.15;
}

.ppc-est-range {
  font-family: 'Geist Mono', monospace;
  font-size: 12.5px;
  color: var(--ppc-ink-2);
  font-feature-settings: 'tnum' 1;
}

.ppc-rsm2-median {
  font-family: 'Geist Mono', monospace;
  font-size: 18px;
  font-weight: 600;
  color: var(--ppc-accent-deep);
  letter-spacing: -0.01em;
  font-feature-settings: 'tnum' 1;
}

.ppc-rsm2-range {
  font-family: 'Geist Mono', monospace;
  font-size: 11.5px;
  color: var(--ppc-ink-2);
  font-feature-settings: 'tnum' 1;
}

.ppc-confidence {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-start;
  justify-content: center;
}

.ppc-conf-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  background: var(--ppc-hover);
  color: var(--ppc-ink-1);
}
.ppc-conf-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ppc-ink-3);
}
.ppc-conf-pill.ppc-conf-high  { background: rgba(5,150,105,0.10); color: var(--ppc-success); }
.ppc-conf-pill.ppc-conf-high  .ppc-conf-dot { background: var(--ppc-success); }
.ppc-conf-pill.ppc-conf-mid   { background: rgba(217,119,6,0.12);  color: var(--ppc-warning); }
.ppc-conf-pill.ppc-conf-mid   .ppc-conf-dot { background: var(--ppc-warning); }
.ppc-conf-pill.ppc-conf-low   { background: rgba(185,28,28,0.10);  color: var(--ppc-danger);  }
.ppc-conf-pill.ppc-conf-low   .ppc-conf-dot { background: var(--ppc-danger); }

.ppc-conf-detail {
  font-size: 11.5px;
  color: var(--ppc-ink-2);
  letter-spacing: 0.005em;
}

/* ============== COMPARABLES ============== */

.ppc-comparables-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
  padding: 0 4px;
}
.ppc-comparables-head h2 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ppc-ink);
}
.ppc-comp-sub {
  font-size: 12px;
  color: var(--ppc-ink-2);
}

.ppc-comparables {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.ppc-card {
  background: var(--ppc-panel-bg);
  border: 1px solid var(--ppc-border);
  border-radius: var(--ppc-radius);
  box-shadow: var(--ppc-shadow-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow var(--t-fast), transform var(--t-fast), border-color var(--t-fast);
}
.ppc-card:hover {
  box-shadow: var(--ppc-shadow-md);
  border-color: rgba(184,134,11,0.30);
  transform: translateY(-1px);
}

.ppc-card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.ppc-card-price {
  font-family: 'Geist Mono', monospace;
  font-size: 17px;
  font-weight: 700;
  color: var(--ppc-ink);
  font-feature-settings: 'tnum' 1;
  letter-spacing: -0.02em;
}

.ppc-card-rsm2 {
  font-family: 'Geist Mono', monospace;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ppc-accent-deep);
  font-feature-settings: 'tnum' 1;
  white-space: nowrap;
}

.ppc-card-addr {
  font-size: 13px;
  color: var(--ppc-ink-1);
  font-weight: 500;
  letter-spacing: -0.005em;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.ppc-card-meta {
  font-size: 11.5px;
  color: var(--ppc-ink-2);
  letter-spacing: 0.005em;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.ppc-card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.ppc-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--ppc-divider);
  font-size: 11px;
}

.ppc-card-source {
  color: var(--ppc-ink-3);
  letter-spacing: 0.01em;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.ppc-card-source.has-dedup {
  color: var(--ppc-success);
  font-weight: 600;
}

.ppc-card-link {
  color: var(--ppc-accent-deep);
  font-weight: 600;
  letter-spacing: -0.005em;
  transition: color var(--t-fast);
}
.ppc-card-link:hover {
  color: var(--ppc-ink);
}

.ppc-disclaimer {
  margin-top: 24px;
  padding: 14px 16px;
  background: var(--ppc-hover);
  border-radius: var(--ppc-radius-sm);
  font-size: 11.5px;
  color: var(--ppc-ink-2);
  line-height: 1.5;
  letter-spacing: 0.005em;
}

/* ============== EMPTY STATE ============== */

.ppc-empty {
  background: var(--ppc-panel-bg);
  border: 1px dashed var(--ppc-border);
  border-radius: var(--ppc-radius);
  padding: 32px 24px;
  text-align: center;
  color: var(--ppc-ink-2);
}
.ppc-empty-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--ppc-ink-1);
  margin-bottom: 6px;
}
.ppc-empty-sub {
  font-size: 12.5px;
  line-height: 1.5;
}

/* ============== MOBILE ============== */

@media (max-width: 720px) {
  .ppc-header { padding: 10px 14px; }
  .ppc-brand { display: none; }
  .ppc-main { padding: 20px 14px 60px; }
  .ppc-intro h1 { font-size: 22px; }
  .ppc-intro p { font-size: 14px; }
  .ppc-form-card { padding: 18px; }
  .ppc-grid { grid-template-columns: 1fr; gap: 12px; }
  .ppc-result-summary {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 20px;
  }
  .ppc-est-median { font-size: 22px; }
  .ppc-comparables { grid-template-columns: 1fr; }
}