/* ── Reset & base ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #1a4d5c;
  --accent-hover: #153f4c;
  --accent-light: #e8f2f5;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
  --radius: 10px;
  --radius-sm: 6px;
  --hot: #dc2626;
  --hot-bg: #fef2f2;
  --warm: #d97706;
  --warm-bg: #fffbeb;
  --cold: #6b7280;
  --cold-bg: #f3f4f6;
  --success: #15803d;
  --success-bg: #f0fdf4;
  --error: #b91c1c;
  --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header & nav ─────────────────────────────────────────────────────── */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.875rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.main-nav {
  display: flex;
  gap: 0.5rem;
}

.nav-btn {
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.nav-btn:hover {
  background: var(--accent-light);
  color: var(--accent);
}

.nav-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ── Main layout ──────────────────────────────────────────────────────── */
.main-content {
  flex: 1;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2rem;
}

.view { display: none; }
.view.view-active { display: block; }

.view-title {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
}

.view-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-outline {
  background: var(--surface);
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-outline:hover:not(:disabled) {
  background: var(--accent-light);
}

.btn-icon {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
}

.btn-icon:hover { color: var(--text); }

/* ── Lead form ────────────────────────────────────────────────────────── */
.form-container {
  max-width: 560px;
}

.lead-form {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-field label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
  color: var(--text);
}

.required { color: var(--error); }

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 0.9rem;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.15s;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: var(--error);
}

.field-error {
  display: block;
  font-size: 0.75rem;
  color: var(--error);
  margin-top: 0.25rem;
  min-height: 1rem;
}

.banner {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.banner-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid #bbf7d0;
}

/* ── CRM header & stats ───────────────────────────────────────────────── */
.crm-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.125rem;
}

.stat-card-wide {
  grid-column: 1 / -1;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.03em;
}

.stage-breakdown {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.375rem;
}

.stage-pill {
  font-size: 0.75rem;
  background: var(--bg);
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  color: var(--text-muted);
}

.stage-pill strong {
  color: var(--text);
}

/* ── Filters ──────────────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
  margin-bottom: 1.25rem;
  align-items: flex-end;
}

.filter-field {
  flex: 1 1 140px;
  min-width: 0;
}

.filter-field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.filter-field select,
.filter-field input {
  width: 100%;
  font-family: var(--font);
  font-size: 0.875rem;
  padding: 0.5rem 0.625rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
}

.filter-field select:focus,
.filter-field input:focus {
  outline: none;
  border-color: var(--accent);
}

/* ── Pipeline board ───────────────────────────────────────────────────── */
.pipeline {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  -webkit-overflow-scrolling: touch;
}

.pipeline-column {
  flex: 0 0 240px;
  min-width: 220px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  max-height: calc(100vh - 320px);
  min-height: 200px;
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

.column-header h3 {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.column-count {
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--bg);
  color: var(--text-muted);
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
}

.column-cards {
  flex: 1;
  overflow-y: auto;
  padding: 0.625rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.column-empty {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  padding: 1.5rem 0.5rem;
}

/* ── Lead cards ───────────────────────────────────────────────────────── */
.lead-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.lead-card:hover,
.lead-card:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-light);
  outline: none;
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.card-name {
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.3;
}

.tier-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.125rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
}

.tier-hot  { background: var(--hot-bg);  color: var(--hot); }
.tier-warm { background: var(--warm-bg); color: var(--warm); }
.tier-cold { background: var(--cold-bg); color: var(--cold); }

.card-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.card-meta span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Detail drawer ────────────────────────────────────────────────────── */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 200;
}

.drawer-overlay[hidden],
.detail-drawer[hidden] {
  display: none !important;
}

.detail-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: var(--surface);
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
  z-index: 201;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.drawer-header h3 {
  font-size: 1.125rem;
  font-weight: 700;
}

.drawer-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.drawer-score {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.score-num {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.detail-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.detail-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.detail-value {
  font-size: 0.9rem;
}

.detail-text {
  font-size: 0.875rem;
  color: var(--text);
  line-height: 1.5;
}

.drawer-body textarea {
  font-family: var(--font);
  font-size: 0.875rem;
  padding: 0.625rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  resize: vertical;
  min-height: 80px;
}

.drawer-body textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.drawer-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.drawer-actions .btn {
  flex: 1;
}

/* ── Footer ───────────────────────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 1rem 1.25rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    width: 100%;
  }

  .nav-btn {
    flex: 1;
    text-align: center;
  }

  .crm-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .crm-header .btn {
    width: 100%;
  }

  .pipeline {
    flex-direction: column;
    overflow-x: visible;
  }

  .pipeline-column {
    flex: 1 1 auto;
    min-width: 0;
    max-width: 100%;
    max-height: none;
  }

  .detail-drawer {
    max-width: 100%;
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
  }

  .stat-card-wide {
    grid-column: 1 / -1;
  }
}

@media (max-width: 380px) {
  .main-content {
    padding: 1rem 0.75rem 1.5rem;
  }

  .lead-form {
    padding: 1rem;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }

  .card-meta {
    flex-direction: column;
    gap: 0.125rem;
  }

  .drawer-actions {
    flex-direction: column;
  }
}