:root {
  --bg-base: #0b0f19;
  --bg-card: #151d2e;
  --bg-card-hover: #1e293b;
  --bg-input: #0f172a;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --accent-glow: rgba(56, 189, 248, 0.25);
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --success: #10b981;
  --danger: #f43f5e;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(56, 189, 248, 0.4);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  background: radial-gradient(circle at 50% 0%, #1e1b4b 0%, var(--bg-base) 100%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 16px 56px;
  position: relative;
}

.container {
  width: 100%;
  max-width: 620px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.header-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 8px;
}

.app-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

header h1 {
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.8px;
  color: #ffffff;
}

header p {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: 18px;
  padding: 22px;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.45);
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #ffffff;
}

.card-title-left {
  display: flex;
  align-items: center;
  gap: 9px;
}

.icon-svg {
  width: 18px;
  height: 18px;
  stroke-width: 2.2;
  stroke: currentColor;
  fill: none;
  vertical-align: middle;
}

/* Status Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  background: rgba(244, 63, 94, 0.14);
  color: var(--danger);
  border: 1px solid rgba(244, 63, 94, 0.28);
}

.status-badge.connected {
  background: rgba(16, 185, 129, 0.14);
  color: var(--success);
  border-color: rgba(16, 185, 129, 0.28);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

/* Buttons */
button {
  background: #2563eb;
  color: white;
  border: none;
  padding: 13px 20px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

button:hover:not(:disabled) {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

button:active:not(:disabled) {
  transform: translateY(0);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-connect-primary {
  background: #3b82f6;
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

.btn-add-light {
  background: #1e293b;
  border: 1px dashed rgba(255, 255, 255, 0.22);
  color: var(--accent);
  padding: 11px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: none;
  width: 100%;
  margin-top: 12px;
  border-radius: 10px;
}

.btn-add-light:hover:not(:disabled) {
  background: #273549;
  border-color: var(--accent);
}

/* Devices List */
.devices-box {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.device-chip {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 11px 15px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.device-chip-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: 700;
}

.btn-chip-disconnect {
  background: transparent;
  color: var(--text-muted);
  padding: 5px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  box-shadow: none;
}

.btn-chip-disconnect:hover {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.target-mode-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 0.86rem;
  font-weight: 600;
}

.target-mode-select {
  background: #1e293b;
  color: var(--accent);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.86rem;
  font-weight: 700;
  outline: none;
  cursor: pointer;
}

/* Power Buttons */
.power-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.power-btn {
  padding: 16px;
  font-size: 1.05rem;
  border-radius: 14px;
}

.btn-on {
  background: linear-gradient(135deg, #10b981, #059669);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
}

.btn-off {
  background: linear-gradient(135deg, #f43f5e, #e11d48);
  box-shadow: 0 4px 16px rgba(244, 63, 94, 0.35);
}

/* Color Preview */
.color-preview-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin: 4px 0 22px;
}

.bulb-glow-circle {
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 35px #ffffff;
  border: 3px solid rgba(255, 255, 255, 0.5);
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

input[type="color"] {
  -webkit-appearance: none;
  border: none;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  cursor: pointer;
  background: transparent;
}

input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
input[type="color"]::-webkit-color-swatch {
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
}

/* Sliders */
.control-row {
  margin-top: 18px;
}

.control-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 9px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.control-label span:last-child {
  font-weight: 800;
  color: var(--text-main);
}

input[type="range"] {
  width: 100%;
  height: 8px;
  border-radius: 6px;
  background: #1e293b;
  outline: none;
  -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #38bdf8;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
  transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.18);
}

/* Preset Colors */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  margin-top: 12px;
}

.color-dot {
  width: 100%;
  aspect-ratio: 1/1;
  border-radius: 12px;
  border: 2px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s;
}

.color-dot:hover {
  transform: scale(1.12);
  border-color: #fff;
}

/* Form Elements & Selects */
.form-select {
  width: 100%;
  padding: 13px 15px;
  background: #1e293b;
  color: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  outline: none;
  cursor: pointer;
}

.form-select:focus {
  border-color: var(--border-focus);
}

/* Custom Effects Creator */
.custom-effects-box {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.custom-colors-track {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.custom-color-chip {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 2px solid rgba(255, 255, 255, 0.25);
  cursor: pointer;
  transition: transform 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.custom-color-chip:hover {
  transform: scale(1.08);
  border-color: #fff;
}

.custom-color-chip input[type="color"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.chip-delete-btn {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 18px;
  height: 18px;
  background: #f43f5e;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid #fff;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
  z-index: 10;
  padding: 0;
}

.chip-delete-btn:hover {
  background: #e11d48;
  transform: scale(1.1);
}

.btn-add-color-chip {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 2px dashed rgba(255, 255, 255, 0.3);
  background: transparent;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.3rem;
  padding: 0;
  box-shadow: none;
}

.btn-add-color-chip:hover {
  background: rgba(56, 189, 248, 0.1);
  border-color: var(--accent);
}

.custom-loop-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 4px;
}

.btn-custom-start {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.btn-custom-stop {
  background: #334155;
  color: var(--text-muted);
  box-shadow: none;
}

.btn-custom-stop.active {
  background: #f43f5e;
  color: #fff;
  box-shadow: 0 4px 14px rgba(244, 63, 94, 0.3);
}

/* Collapsible BLE Details */
details.card {
  padding: 0;
  overflow: hidden;
}

details.card summary {
  padding: 16px 22px;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  color: var(--text-muted);
}

details.card summary::-webkit-details-marker {
  display: none;
}

details.card summary:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.02);
}

.chevron-icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  stroke-width: 2.5;
  fill: none;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  color: var(--accent);
}

details[open] .chevron-icon {
  transform: rotate(90deg);
}

.log-content-wrapper {
  padding: 0 22px 22px;
}

.log-box {
  background: #090d16;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 10px;
  padding: 12px;
  font-family: "Cascadia Code", "Courier New", Courier, monospace;
  font-size: 0.78rem;
  color: #94a3b8;
  height: 140px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.log-entry { line-height: 1.3; }
.log-entry.success { color: #34d399; }
.log-entry.error { color: #fb7185; }
.log-entry.info { color: #38bdf8; }
.log-entry.tx { color: #facc15; }

/* Barra Superior de Enlaces / Redes Sociales */
.top-social-bar {
  position: absolute;
  top: 24px;
  right: 28px;
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 100;
}

/* Enlace base (por defecto blanco para tema oscuro) */
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #ffffff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  padding: 4px 4px;
  border-radius: 6px;
  transition: color 0.15s ease, transform 0.15s ease;
  user-select: none;
}

.social-link:hover {
  color: #ffffff;
  transform: translateY(-1px);
}

/* Colores de Hover personalizados para cada red */
.social-link.link-web:hover {
  color: #2563eb; /* Azul EternoDev */
}

.social-link.link-youtube:hover {
  color: #ff0000; /* Rojo YouTube */
}

.social-link.link-github:hover {
  color: #94a3b8; /* GitHub */
}

.social-link.link-banana:hover {
  color: #FBBF24; /* Amarillo Platano / Buy Me a Coffee */
}

/* Iconos SVG */
.social-link svg {
  flex-shrink: 0;
  transition: transform 0.15s ease;
}

.social-link:hover svg {
  transform: scale(1.1);
}

/* Adaptabilidad a dispositivos moviles (Mover al final de la pagina) */
@media (max-width: 1170px) {
  .top-social-bar {
    position: static;
    order: 10;
    margin-top: 40px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .preset-grid { grid-template-columns: repeat(4, 1fr); }
  .power-controls { grid-template-columns: 1fr; }
}

/* Pie de información y autoría */
.app-footer {
  text-align: center;
  margin-top: 8px;
  padding: 16px 12px 4px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-color);
}

.app-footer strong {
  color: var(--text-muted);
}

.app-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
  transition: color 0.15s ease;
}

.app-footer a:hover {
  color: #ffffff;
  text-decoration: underline;
}