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

:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-2: #f0f0ec;
  --border: #e2e2dc;
  --border-dark: #c8c8c0;
  --accent: #1a1a1a;
  --accent-2: #3a3a3a;
  --muted: #8a8a82;
  --text: #1a1a1a;
  --go: #1a6634;
  --go-bg: #edf7f1;
  --caution: #92580a;
  --caution-bg: #fef8ee;
  --nogo: #991b1b;
  --nogo-bg: #fef2f2;
  --radius: 2px;
  --mono: 'JetBrains Mono', 'Courier New', monospace;
  --sans: 'Inter', system-ui, sans-serif;
}

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

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  font-size: 14px;
}

/* ── Grid background texture ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

/* ── Header ── */
.header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 40px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text);
  text-transform: uppercase;
}

.logo-bracket { color: var(--muted); }

.sys-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Buttons ── */
.btn {
  padding: 9px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border-dark);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all 0.15s;
  background: var(--surface);
  color: var(--text);
}

.btn:hover {
  background: var(--accent);
  color: var(--surface);
  border-color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  color: var(--surface);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ── Index / Hero ── */
.hero {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 72px auto 0;
  padding: 0 24px;
}

.sys-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border-dark);
  padding: 3px 10px;
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
  color: var(--text);
}

.hero p {
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 36px;
  max-width: 520px;
}

/* ── Idea Form ── */
.idea-form {
  background: var(--surface);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
}

.form-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}

.form-header-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.form-header-dots { display: flex; gap: 5px; }

.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border-dark);
}

.idea-form textarea {
  width: 100%;
  min-height: 180px;
  background: var(--surface);
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-family: var(--sans);
  font-size: 0.9rem;
  padding: 16px;
  resize: vertical;
  outline: none;
  line-height: 1.7;
}

.idea-form textarea::placeholder { color: #b8b8b0; }

.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--surface-2);
}

.word-count {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
}

/* ── Spinner ── */
.spinner {
  display: inline-block;
  width: 12px; height: 12px;
  border: 1.5px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-right: 6px;
  vertical-align: middle;
}

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

/* ── Error ── */
.error-msg {
  background: var(--nogo-bg);
  border: 1px solid #fecaca;
  color: var(--nogo);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-top: 12px;
  font-size: 0.82rem;
  font-family: var(--mono);
}

/* ── Result page ── */
.result-page {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: 0 auto;
  padding: 36px 24px 60px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 28px;
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: var(--radius);
  transition: all 0.15s;
}

.back-link:hover { color: var(--text); border-color: var(--border-dark); }

/* Decision block */
.decision-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.decision-badge {
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  padding: 6px 16px;
  border-radius: var(--radius);
  text-transform: uppercase;
}

.decision-GO    { background: var(--go-bg);      color: var(--go);      border: 1px solid #bbf7d0; }
.decision-CAUTION { background: var(--caution-bg); color: var(--caution); border: 1px solid #fde68a; }
.decision-NO_GO { background: var(--nogo-bg);    color: var(--nogo);    border: 1px solid #fecaca; }

.confidence-badge {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius);
  border: 1px solid var(--border-dark);
  color: var(--muted);
  background: var(--surface);
}

.failure-pattern {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

/* Score cards */
.score-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
}

.score-card {
  background: var(--surface);
  padding: 20px 24px;
  text-align: center;
}

.score-card .label {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.score-card .value {
  font-family: var(--mono);
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}

/* Sections */
.section {
  background: var(--surface);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 12px;
}

.section h3 {
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

/* Two-col layout */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }

/* Tags */
.tag-list { display: flex; flex-wrap: wrap; gap: 6px; }

.tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 3px 10px;
  background: var(--surface-2);
  color: var(--accent-2);
}

.tag.strength { border-color: #bbf7d0; background: var(--go-bg);      color: var(--go); }
.tag.risk     { border-color: #fecaca; background: var(--nogo-bg);    color: var(--nogo); }

/* Recommendations */
.rec-list { list-style: none; }
.rec-list li {
  font-size: 0.875rem;
  padding: 9px 0 9px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  position: relative;
}
.rec-list li:last-child { border-bottom: none; }
.rec-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  font-family: var(--mono);
  color: var(--muted);
}

/* Versions */
.version-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 8px;
  background: var(--surface-2);
  font-size: 0.875rem;
}

.version-num {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

/* Factor bars */
.factors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
}

.factor-row { display: flex; align-items: center; gap: 10px; }

.factor-name {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  width: 160px;
  flex-shrink: 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.factor-bar-wrap {
  flex: 1;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 1px;
  height: 5px;
  overflow: hidden;
}

.factor-bar {
  height: 100%;
  background: var(--accent);
  transition: width 0.9s ease;
}

.factor-score {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text);
  width: 28px;
  text-align: right;
}

/* Structured model summary */
.struct-field { margin-bottom: 12px; }
.struct-field-key {
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 2px;
}
.struct-field-val { font-size: 0.875rem; color: var(--text); }

/* Loading state */
.loading-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 80px 0;
  gap: 16px;
}

.loading-bar {
  width: 200px;
  height: 2px;
  background: var(--border);
  border-radius: 1px;
  overflow: hidden;
}

.loading-bar-fill {
  height: 100%;
  background: var(--accent);
  animation: load 1.8s ease-in-out infinite;
}

@keyframes load {
  0%   { width: 0%; margin-left: 0; }
  50%  { width: 60%; margin-left: 20%; }
  100% { width: 0%; margin-left: 100%; }
}

.loading-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* details/summary reset */
details > summary { list-style: none; cursor: pointer; }
details > summary::-webkit-details-marker { display: none; }

/* Score card sublabel */
.score-sublabel {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
  margin-top: 4px;
  letter-spacing: 0.04em;
}

/* Decision reason */
.decision-reason {
  display: none;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 6px;
  letter-spacing: 0.05em;
}

/* Why this score */
.score-why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 12px;
}

.why-card {
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.why-positive { background: var(--go-bg); border-color: #b8e0c8; }
.why-negative { background: var(--nogo-bg); border-color: #fecaca; }

.why-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 4px;
}

.why-score {
  font-family: var(--mono);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1;
  margin-bottom: 6px;
}

.why-positive .why-score { color: var(--go); }
.why-negative .why-score { color: var(--nogo); }

.why-reason {
  font-size: 0.78rem;
  color: var(--accent-2);
  line-height: 1.4;
}

/* Decision description */
.decision-description {
  display: none;
  font-size: 0.84rem;
  color: var(--accent-2);
  margin-top: 8px;
  margin-bottom: 20px;
  line-height: 1.5;
  max-width: 620px;
}

/* Warning banners */
.warning-banner {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  padding: 9px 14px;
  border-radius: var(--radius);
  margin-bottom: 6px;
}

.warning-warn {
  background: var(--caution-bg);
  border: 1px solid #fde68a;
  color: var(--caution);
}

.warning-error {
  background: var(--nogo-bg);
  border: 1px solid #fecaca;
  color: var(--nogo);
}

/* Quick stats row */
.quick-stats {
  display: flex;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 12px;
}

.quick-stat {
  flex: 1;
  background: var(--surface);
  padding: 14px 18px;
  text-align: center;
}

.qs-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.qs-value {
  font-family: var(--mono);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}

/* Market Reality Check */
.reality-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 4px;
}

.reality-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
}

.reality-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 5px;
}

.reality-value {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
}

/* Next steps list */
.next-steps-list li::before {
  content: '✦';
  font-size: 0.6rem;
  top: 11px;
}

/* Structured model unclear */
.struct-unclear {
  color: var(--muted);
  font-style: italic;
}

@media (max-width: 620px) {
  .score-why-grid { grid-template-columns: 1fr; }
  .reality-grid { grid-template-columns: 1fr; }
  .quick-stats { flex-direction: column; }
}

@media (max-width: 620px) {
  .header { padding: 12px 16px; }
  .hero { margin-top: 40px; }
  .hero h1 { font-size: 1.7rem; }
  .score-row { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .factors-grid { grid-template-columns: 1fr; }
}

/* ── Paywall ── */

.score-card.locked {
  position: relative;
  filter: blur(4px);
  user-select: none;
  pointer-events: none;
}

.paywall-zone {
  position: relative;
}

.paywall-content.blurred {
  filter: blur(5px);
  pointer-events: none;
  user-select: none;
}

.paywall-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 48px;
  z-index: 20;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(247, 247, 245, 0.55) 25%,
    rgba(247, 247, 245, 0.92) 55%,
    var(--bg) 80%
  );
}

.paywall-zone.locked .paywall-overlay {
  display: flex;
}

.paywall-zone.locked .paywall-content {
  filter: blur(5px);
  pointer-events: none;
  user-select: none;
}

.paywall-box {
  background: var(--surface);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius);
  padding: 28px 32px;
  text-align: center;
  max-width: 380px;
  width: 100%;
  box-shadow: 0 4px 24px rgba(0,0,0,0.07);
}

.paywall-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 12px;
}

.paywall-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin-bottom: 6px;
}

.paywall-items {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 20px;
  line-height: 1.7;
}

.btn-unlock {
  width: 100%;
  padding: 12px 20px;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}

.paywall-sub {
  font-size: 0.75rem;
  color: var(--muted);
  font-style: italic;
  line-height: 1.4;
}

.paywall-error {
  background: var(--nogo-bg);
  border: 1px solid #fecaca;
  color: var(--nogo);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 0.7rem;
  margin-top: 10px;
  display: none;
}