/* CONFIGURACIÓN DE COLORES Y VARIABLES */
:root {
  --background: #0a0a0a;
  --foreground: #f0fdf4;
  --card: #111111;
  --border: #27272a;
  --primary: #10b981;
  --primary-hover: #059669;
  --secondary: #1f2937;
  --secondary-hover: #374151;
  --muted-foreground: #9ca3af;
  --dark-bg: #050505;
  --input-bg: #18181b;
}

/* RESET Y BASE */
* {
  box-sizing: border-box;
}

body,
html {
  height: 100%;
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  overflow: hidden;
  display: flex;
  justify-content: center;
}

/* CONTENEDOR PRINCIPAL */
.main-wrapper {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100%;
  max-width: 1100px;
  padding: 24px;
  gap: 16px;
}

/* HEADER */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
}

.header-title {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* PANEL DE CONFIGURACIÓN */
.config-bar {
  background-color: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex-shrink: 0;
}

.config-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.label-text {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted-foreground);
  display: block;
}

.file-input {
  width: 100%;
  font-size: 0.9rem;
  color: var(--muted-foreground);
}

/* CONTROLES DE RANGO */
.range-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.input-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 8px;
}

.input-number {
  background: transparent;
  border: none;
  color: var(--foreground);
  width: 60px;
  font-size: 0.9rem;
  outline: none;
  text-align: center;
}

.input-number::-webkit-inner-spin-button {
  display: none;
}

.btn-small {
  background-color: var(--secondary);
  color: var(--foreground);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-small:hover {
  background-color: var(--secondary-hover);
}

/* SELECTOR DE COLUMNAS */
.column-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.col-badge {
  display: flex;
  align-items: center;
  padding: 5px 12px;
  background-color: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.2s;
}

.col-badge:hover {
  background-color: var(--secondary-hover);
}

.col-badge input {
  margin-right: 8px;
  accent-color: var(--primary);
}

/* ÁREA DE RESULTADO */
.result-container {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  min-height: 0;
  gap: 12px;
}

.main-textarea {
  flex-grow: 1;
  width: 100%;
  background-color: var(--dark-bg);
  color: #d1d5db;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  font-family: "JetBrains Mono", "Courier New", monospace;
  font-size: 0.95rem;
  resize: none;
  outline: none;
  line-height: 1.5;
}

.main-textarea:focus {
  border-color: var(--primary);
}

/* BOTONES DE ACCIÓN */
.actions-group {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.btn {
  flex: 1;
  padding: 14px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: 0.2s;
  font-size: 0.95rem;
}

.btn-primary {
  background-color: var(--primary);
  color: #000;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--secondary);
  color: white;
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
}

.help-icon-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted-foreground);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  transition: all 0.2s;
}

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

/* MODAL */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 100;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 24px;
  border-radius: 16px;
  max-width: 500px;
  width: 100%;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.modal-title {
  color: var(--primary);
  margin-top: 0;
  font-size: 1.25rem;
}

.modal-body {
  font-size: 0.9rem;
  color: var(--muted-foreground);
  line-height: 1.6;
}

.modal-list {
  padding-left: 20px;
  margin: 12px 0;
}

.example-link {
  display: inline-block;
  margin-top: 8px;
  color: var(--primary);
  text-decoration: underline;
  font-weight: 500;
  cursor: pointer;
}

.btn-modal-close {
  width: 100%;
  margin-top: 20px;
  padding: 12px;
  border-radius: 8px;
  border: none;
  background: var(--secondary);
  color: white;
  cursor: pointer;
  font-weight: 600;
}

/* ESTADOS */
.hidden {
  display: none !important;
}

/* RESPONSIVE */
@media (max-width: 640px) {
  .main-wrapper {
    padding: 16px;
    gap: 12px;
  }
  .header-title {
    font-size: 1.1rem;
  }
  .actions-group {
    flex-direction: column;
  }
  .range-controls {
    flex-direction: column;
    align-items: flex-start;
  }
  .input-group {
    width: 100%;
    justify-content: space-between;
  }
}