/* ── ProposalAI Frontend Styles ── */
:root {
  --pai-bg: #f1f5f9;
  --pai-card: #ffffff;
  --pai-border: #e2e8f0;
  --pai-border2: #cbd5e1;
  --pai-ink: #0f172a;
  --pai-ink2: #374151;
  --pai-muted: #64748b;
  --pai-light: #94a3b8;
  --pai-green: #16a34a;
  --pai-green-bg: #f0fdf4;
  --pai-green-border: #bbf7d0;
  --pai-blue: #1d4ed8;
  --pai-blue-bg: #eff6ff;
  --pai-blue-border: #bfdbfe;
  --pai-amber: #d97706;
  --pai-amber-bg: #fffbeb;
  --pai-red: #dc2626;
  --pai-red-bg: #fef2f2;
  --pai-radius: 14px;
  --pai-shadow: 0 2px 12px rgba(0,0,0,0.07);
}

.pai-page {
  max-width: 820px;
  margin: 0 auto;
  padding: 32px 20px 60px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--pai-ink);
}

/* ── AUTH PAGES ── */
.pai-auth-page { max-width: 460px; }

.pai-auth-card {
  background: var(--pai-card);
  border: 1px solid var(--pai-border);
  border-radius: var(--pai-radius);
  padding: 40px 36px;
  box-shadow: var(--pai-shadow);
  text-align: center;
}

.pai-auth-logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--pai-blue);
  margin-bottom: 20px;
}

.pai-auth-card h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--pai-ink);
}

.pai-auth-sub {
  font-size: 14px;
  color: var(--pai-muted);
  margin-bottom: 28px;
}

.pai-form { text-align: left; }

.pai-field { margin-bottom: 16px; }

.pai-field label,
.pai-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--pai-ink2);
  margin-bottom: 6px;
}

.pai-field input,
.pai-field textarea,
.pai-field select,
#pai-jd {
  width: 100%;
  font-size: 14px;
  line-height: 1.6;
  border: 1.5px solid var(--pai-border2);
  border-radius: 10px;
  padding: 10px 14px;
  background: #fff;
  color: var(--pai-ink);
  font-family: inherit;
  transition: border-color 0.15s;
  box-sizing: border-box;
}

.pai-field input:focus,
.pai-field textarea:focus,
#pai-jd:focus {
  outline: none;
  border-color: var(--pai-blue);
  box-shadow: 0 0 0 3px rgba(29,78,216,0.08);
}

.pai-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--pai-muted);
  margin-bottom: 20px;
  cursor: pointer;
}

.pai-auth-link {
  margin-top: 20px;
  font-size: 13px;
  color: var(--pai-muted);
}

.pai-auth-link a {
  color: var(--pai-blue);
  text-decoration: none;
  font-weight: 600;
}

/* ── BUTTONS ── */
.pai-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: none;
  border-radius: 9px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  padding: 11px 22px;
  font-family: inherit;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.pai-btn-primary {
  background: var(--pai-blue);
  color: #fff;
  width: 100%;
  justify-content: center;
}

.pai-btn-primary:hover:not(:disabled) {
  background: #1e40af;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(29,78,216,0.3);
}

.pai-btn-primary:disabled {
  background: #93c5fd;
  cursor: not-allowed;
  transform: none;
}

.pai-btn-secondary {
  background: #fff;
  color: var(--pai-ink2);
  border: 1.5px solid var(--pai-border2);
}

.pai-btn-secondary:hover { background: #f8fafc; }

.pai-btn-ghost {
  background: none;
  color: var(--pai-muted);
  border: none;
  font-size: 13px;
  padding: 10px 14px;
}

.pai-btn-ghost:hover { color: var(--pai-ink2); background: #f1f5f9; border-radius: 8px; }

.pai-btn-sm {
  padding: 6px 14px;
  font-size: 12px;
  width: auto;
  background: var(--pai-blue-bg);
  color: var(--pai-blue);
  border: 1px solid var(--pai-blue-border);
  border-radius: 7px;
}

.pai-btn-sm:hover { background: #dbeafe; }

/* ── MESSAGES ── */
.pai-msg {
  padding: 11px 14px;
  border-radius: 9px;
  font-size: 13.5px;
  margin-bottom: 16px;
  line-height: 1.6;
}

.pai-msg-success {
  background: var(--pai-green-bg);
  border: 1px solid var(--pai-green-border);
  color: var(--pai-green);
}

.pai-msg-error {
  background: var(--pai-red-bg);
  border: 1px solid #fecaca;
  color: var(--pai-red);
}

.pai-msg-warn {
  background: var(--pai-amber-bg);
  border-left: 3px solid var(--pai-amber);
  color: #92400e;
  border-radius: 0 9px 9px 0;
}

/* ── DASHBOARD ── */
.pai-dash-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
  gap: 16px;
  flex-wrap: wrap;
}

.pai-dash-header h2 { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.pai-dash-header p { font-size: 14px; color: var(--pai-muted); }
.pai-dash-header .pai-btn-primary { width: auto; }

.pai-dash-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.pai-dash-stat {
  background: var(--pai-card);
  border: 1px solid var(--pai-border);
  border-radius: var(--pai-radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--pai-shadow);
}

.pai-dash-stat-val {
  font-size: 30px;
  font-weight: 800;
  color: var(--pai-blue);
  margin-bottom: 4px;
}

.pai-dash-stat-label {
  font-size: 12px;
  color: var(--pai-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pai-low-credits-banner {
  background: var(--pai-amber-bg);
  border: 1px solid #fde68a;
  border-radius: 10px;
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13.5px;
  color: #92400e;
  margin-bottom: 20px;
}

.pai-dash-actions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 20px;
}

.pai-action-card {
  background: var(--pai-card);
  border: 1px solid var(--pai-border);
  border-radius: var(--pai-radius);
  padding: 22px 20px;
  text-align: center;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s;
  box-shadow: var(--pai-shadow);
}

.pai-action-card:hover {
  border-color: var(--pai-blue);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(29,78,216,0.1);
}

.pai-action-icon { font-size: 28px; margin-bottom: 10px; }
.pai-action-title { font-size: 14px; font-weight: 700; color: var(--pai-ink); margin-bottom: 6px; }
.pai-action-desc { font-size: 12.5px; color: var(--pai-muted); line-height: 1.5; }

/* ── GENERATOR ── */
.pai-generator-page { max-width: 720px; }

.pai-gen-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 22px;
}

.pai-gen-header h2 { font-size: 22px; font-weight: 700; }

.pai-credits-badge {
  background: var(--pai-green-bg);
  border: 1px solid var(--pai-green-border);
  color: var(--pai-green);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
}

.pai-credits-badge span { font-size: 16px; font-weight: 800; }

.pai-gen-box { margin-bottom: 14px; }

#pai-jd { min-height: 160px; resize: vertical; }

.pai-jd-meta {
  display: flex;
  justify-content: flex-end;
  font-size: 11px;
  color: var(--pai-light);
  margin-top: 5px;
}

.pai-gen-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.pai-gen-actions .pai-btn-primary { width: auto; padding: 11px 28px; }

/* Loading */
.pai-gen-loading {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
}

.pai-spinner {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 2.5px solid var(--pai-border);
  border-top-color: var(--pai-blue);
  animation: pai-spin 0.65s linear infinite;
  flex-shrink: 0;
}

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

#pai-loading-text { font-size: 13.5px; color: var(--pai-muted); }

/* Result */
.pai-result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--pai-light);
}

.pai-result-box {
  background: #f8fafc;
  border: 1.5px solid var(--pai-border);
  border-radius: 12px;
  padding: 20px 22px;
  font-size: 14px;
  line-height: 1.95;
  color: var(--pai-ink);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── BILLING / PLANS ── */
.pai-billing-sub { font-size: 14px; color: var(--pai-muted); margin-bottom: 28px; }

.pai-plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.pai-plan {
  background: var(--pai-card);
  border: 1.5px solid var(--pai-border);
  border-radius: var(--pai-radius);
  padding: 24px 20px;
  position: relative;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.pai-plan:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,0.09);
  border-color: var(--pai-border2);
}

.pai-plan.featured {
  border-color: var(--pai-blue);
  box-shadow: 0 4px 20px rgba(29,78,216,0.12);
}

.pai-plan-badge {
  position: absolute;
  top: -1px; right: 16px;
  background: var(--pai-blue);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 0 0 8px 8px;
}

.pai-plan-name {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--pai-muted);
  margin-bottom: 10px;
}

.pai-plan-price {
  font-size: 34px;
  font-weight: 800;
  color: var(--pai-ink);
  margin-bottom: 2px;
}

.pai-plan-price span { font-size: 16px; font-weight: 400; color: var(--pai-muted); }

.pai-plan-credits {
  font-size: 13px;
  color: var(--pai-muted);
  margin-bottom: 14px;
}

.pai-plan-desc {
  font-size: 13px;
  color: var(--pai-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  border-top: 1px solid var(--pai-border);
  padding-top: 14px;
}

.pai-plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

.pai-plan-features li {
  font-size: 13px;
  color: var(--pai-ink2);
  padding: 4px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.pai-gateway-select { display: flex; flex-direction: column; gap: 8px; }

.pai-btn-buy {
  width: 100%;
  justify-content: center;
  background: var(--pai-blue);
  color: #fff;
  border: none;
  border-radius: 9px;
  padding: 10px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  font-family: inherit;
}

.pai-btn-buy:hover { background: #1e40af; }

.pai-no-gateway {
  font-size: 12px;
  color: var(--pai-light);
  text-align: center;
  padding: 10px 0;
}

/* ── HISTORY ── */
.pai-empty { text-align: center; padding: 40px; color: var(--pai-muted); }
.pai-empty a { color: var(--pai-blue); }

.pai-history-list { display: flex; flex-direction: column; gap: 14px; }

.pai-history-item {
  background: var(--pai-card);
  border: 1px solid var(--pai-border);
  border-radius: var(--pai-radius);
  padding: 18px 20px;
  box-shadow: var(--pai-shadow);
}

.pai-history-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.pai-history-date { font-size: 12px; color: var(--pai-light); }

.pai-history-jd {
  font-size: 13px;
  color: var(--pai-muted);
  margin-bottom: 8px;
  line-height: 1.5;
}

.pai-history-proposal {
  font-size: 13.5px;
  color: var(--pai-ink2);
  line-height: 1.7;
}

.pai-expand {
  color: var(--pai-blue);
  font-size: 12.5px;
  text-decoration: none;
  margin-left: 6px;
}

/* Responsive */
@media (max-width: 640px) {
  .pai-dash-stats { grid-template-columns: 1fr 1fr; }
  .pai-dash-actions { grid-template-columns: 1fr; }
  .pai-plans-grid { grid-template-columns: 1fr; }
  .pai-gen-actions { flex-direction: column; }
  .pai-gen-actions .pai-btn-primary { width: 100%; }
}