/* Empty States - UX Sprint 1 */
.empty-state-hero {
  text-align: center;
  padding: 2.5rem 2rem;
  background: linear-gradient(
    135deg,
    rgba(74, 222, 128, 0.08) 0%,
    rgba(24, 24, 27, 0.9) 100%
  );
  border-radius: 16px;
  border: 1px dashed rgba(74, 222, 128, 0.35);
}

.empty-state-hero h3 {
  font-size: 1.15rem;
  margin: 12px 0 6px;
  color: var(--text-1);
}

.text-muted {
  color: var(--text-2);
  font-size: 0.9rem;
}

.empty-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 16px 0 12px;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-1);
}

.btn-ghost:hover {
  border-color: rgba(74, 222, 128, 0.45);
  color: var(--primary);
}

.btn-lg {
  padding: 10px 18px;
  font-size: 0.95rem;
}

.empty-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-3);
}

.empty-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--primary);
  opacity: 0.85;
}

/* Preset list (Sprint 3) */
.preset-list {
  margin-top: 18px;
  padding: 14px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.35);
  border: 1px solid rgba(74, 222, 128, 0.2);
}

.preset-title {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 10px;
}

.preset-subtitle {
  font-size: 0.75rem;
  color: var(--text-3);
  margin-bottom: 12px;
}

.preset-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.preset-pill {
  border: 1px solid rgba(74, 222, 128, 0.3);
  background: rgba(74, 222, 128, 0.08);
  color: var(--text-1);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.preset-pill:hover {
  background: rgba(74, 222, 128, 0.2);
  border-color: rgba(74, 222, 128, 0.5);
  color: var(--primary);
}

.preset-empty {
  font-size: 0.8rem;
  color: var(--text-3);
  text-align: center;
}

/* Smart-Builder systems list - Strategy C+ Grid Hibrido */
.sb-system-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  max-height: 380px;
  overflow-y: auto;
  padding: 4px;
}

.sb-system-card {
  position: relative;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid rgba(74, 222, 128, 0.18);
  background: rgba(15, 23, 42, 0.35);
  color: var(--text-1);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.sb-system-card:hover {
  border-color: rgba(74, 222, 128, 0.5);
  background: rgba(74, 222, 128, 0.06);
}

.sb-system-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}

.sb-system-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.sb-system-name {
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.sb-system-tag {
  position: absolute;
  top: 6px;
  right: 6px;
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 5px;
  border-radius: 999px;
  border: 1px solid rgba(74, 222, 128, 0.35);
  color: var(--primary);
  background: rgba(14, 14, 16, 0.8);
}

.sb-system-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.7rem;
  color: var(--text-2);
  margin-bottom: 8px;
}

.sb-system-uvalue {
  font-family: 'JetBrains Mono', monospace;
  color: var(--primary);
  font-weight: 500;
}

.sb-system-zone {
  color: var(--text-3);
  font-size: 0.65rem;
}

.sb-system-apply {
  width: 100%;
  padding: 5px 8px;
  background: rgba(74, 222, 128, 0.12);
  border: 1px solid rgba(74, 222, 128, 0.25);
  border-radius: 4px;
  color: var(--primary);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.sb-system-apply:hover {
  background: rgba(74, 222, 128, 0.22);
  border-color: rgba(74, 222, 128, 0.45);
}

/* Tooltip preview de capas */
.sb-system-tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(14, 14, 16, 0.96);
  border: 1px solid rgba(74, 222, 128, 0.3);
  border-radius: 8px;
  padding: 10px 12px;
  min-width: 180px;
  max-width: 220px;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.sb-system-card:hover .sb-system-tooltip {
  opacity: 1;
  visibility: visible;
}

.sb-system-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: rgba(74, 222, 128, 0.3);
}

.sb-tooltip-title {
  font-size: 0.7rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.sb-tooltip-layers {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sb-tooltip-layer {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-2);
  padding: 2px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.sb-tooltip-layer:last-child {
  border-bottom: none;
}

.sb-tooltip-layer-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 130px;
}

.sb-tooltip-layer-mm {
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
}

/* Responsive: 1 columna en pantallas muy pequenas */
@media (max-width: 400px) {
  .sb-system-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   UX 2026-02-08: Headers Compactos y Acordeones
   ============================================ */

/* Section Header Compact */
.section-header-compact {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.section-header-compact .section-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 6px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-header-compact .section-subtitle {
  font-size: 0.85rem;
  color: var(--text-2, #a1a1aa);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.section-header-compact .section-subtitle .text-success {
  color: var(--success, #10b981);
}

/* Methodology Accordion */
.methodology-accordion {
  margin-top: 24px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.3);
  overflow: hidden;
}

.methodology-accordion__toggle {
  width: 100%;
  padding: 14px 18px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2, #a1a1aa);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  list-style: none;
  transition: background 0.2s;
}

.methodology-accordion__toggle::-webkit-details-marker {
  display: none;
}

.methodology-accordion__toggle:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-1, #fff);
}

.methodology-accordion__toggle i {
  color: var(--primary, #3b82f6);
}

.methodology-accordion[open] .methodology-accordion__toggle {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.methodology-accordion__content {
  padding: 16px;
}

.methodology-accordion__content .methodology-card {
  margin: 0;
  border: none;
  background: transparent;
}

/* Config Panel (Condensation) */
.config-panel {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 20px;
}

.config-panel--condensation {
  border-color: rgba(59, 130, 246, 0.3);
}

.config-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 12px;
}

.config-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.config-group--primary {
  flex: 1;
  min-width: 200px;
}

.config-group--checkbox {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}

.config-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-3, #71717a);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.input--lg {
  padding: 10px 14px;
  font-size: 1rem;
}

.config-conditions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 0.8rem;
}

.config-conditions__label {
  color: var(--text-3, #71717a);
  font-weight: 500;
}

.config-conditions__value {
  color: var(--text-2, #a1a1aa);
  background: rgba(0, 0, 0, 0.2);
  padding: 4px 8px;
  border-radius: 4px;
}

.config-conditions__value span {
  color: var(--primary, #3b82f6);
  font-weight: 600;
}

.config-conditions__source {
  color: var(--text-3, #71717a);
  font-size: 0.75rem;
}

.config-conditions__source span {
  color: var(--success, #10b981);
}

/* Responsive */
@media (max-width: 768px) {
  .config-row {
    flex-direction: column;
    align-items: stretch;
  }

  .config-group--primary {
    min-width: 100%;
  }

  .config-conditions {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}