:root {
  --bg-app: #0f172a;
  --bg-card: #1e293b;
  --bg-card-header: #334155;
  --bg-input: #0f172a;
  --border-color: #334155;
  --border-focus: #38bdf8;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --brand-primary: #38bdf8;
  --brand-success: #10b981;
  --brand-warning: #f59e0b;
  --brand-danger: #ef4444;
  --brand-piso: #ec4899;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

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

body {
  background-color: var(--bg-app);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* Header & Topbar */
.topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge-v4 {
  background: rgba(56, 189, 248, 0.2);
  color: var(--brand-primary);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-badge {
  color: var(--text-muted);
  font-size: 13px;
}

.btn-icon {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-icon:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

/* Navigation Tabs */
.nav-container {
  background: rgba(30, 41, 59, 0.7);
  border-bottom: 1px solid var(--border-color);
  padding: 0 24px;
  display: flex;
  gap: 8px;
}

.nav-tab {
  padding: 12px 16px;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.nav-tab.active {
  color: var(--brand-primary);
  border-bottom-color: var(--brand-primary);
}

/* Main Layout Grid */
.container {
  max-width: 1400px;
  margin: 20px auto;
  padding: 0 20px;
}

.pricing-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 20px;
}

@media (max-width: 1024px) {
  .pricing-layout {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 20px;
  overflow: hidden;
}

.card-header {
  background: var(--bg-card-header);
  padding: 12px 16px;
  font-weight: 600;
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-body {
  padding: 16px;
}

/* Module Selector Grid */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.mod-btn {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 10px 8px;
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  text-align: center;
  font-weight: 600;
  font-size: 12px;
  transition: all 0.2s;
}

.mod-btn.active {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

/* Forms and Inputs */
.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.form-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

@media (max-width: 768px) {
  .form-grid-2, .form-grid-3, .form-grid-4 {
    grid-template-columns: 1fr;
  }
}

.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 13px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--brand-primary);
}

/* Hours Table */
.table-hours {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
  font-size: 13px;
}

.table-hours th, .table-hours td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-color);
}

.table-hours th {
  text-align: left;
  color: var(--text-muted);
  font-size: 11px;
  text-transform: uppercase;
}

.table-hours .num-col {
  text-align: right;
  font-family: var(--font-mono);
}

.delta-badge {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
}
.delta-zero { color: var(--text-dim); }
.delta-plus { background: rgba(16, 185, 129, 0.2); color: var(--brand-success); }
.delta-minus { background: rgba(239, 68, 68, 0.2); color: var(--brand-danger); }

/* Result Panel (Sidebar) */
.result-panel {
  position: sticky;
  top: 70px;
}

.price-card {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 10px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
}

.price-card.piso { border-left: 4px solid var(--brand-piso); }
.price-card.alvo { border-left: 4px solid var(--brand-primary); }
.price-card.comercial { border-left: 4px solid var(--brand-success); }

.price-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.price-value {
  font-size: 20px;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-top: 2px;
}

.status-banner {
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-banner.alvo { background: rgba(16, 185, 129, 0.2); color: var(--brand-success); border: 1px solid rgba(16, 185, 129, 0.4); }
.status-banner.comprimido { background: rgba(245, 158, 11, 0.2); color: var(--brand-warning); border: 1px solid rgba(245, 158, 11, 0.4); }
.status-banner.piso { background: rgba(239, 68, 68, 0.2); color: var(--brand-danger); border: 1px solid rgba(239, 68, 68, 0.4); }

.mem-calc-list {
  font-size: 12px;
  color: var(--text-muted);
}

.mem-calc-item {
  display: flex;
  justify-content: space-between;
  padding: 4px 0;
  border-bottom: 1px dashed var(--border-color);
}

.mem-calc-item .val {
  font-family: var(--font-mono);
  color: var(--text-main);
}

/* Action Buttons */
.btn-primary {
  width: 100%;
  padding: 12px;
  background: var(--brand-primary);
  color: #0f172a;
  border: none;
  border-radius: 6px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.2s;
  margin-top: 10px;
}

.btn-primary:hover { opacity: 0.9; }


.btn-secondary {
  width: 100%;
  padding: 12px;
  background: var(--bg-card-header);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: opacity 0.2s;
  margin-top: 10px;
}
.btn-secondary:hover { opacity: 0.8; }

.btn-outline {
  width: 100%;
  padding: 12px;
  background: transparent;
  color: var(--text-main);
  border: 1px dashed var(--border-color);
  border-radius: 6px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 10px;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
}