/* Core Design Tokens */
:root {
  --font-title: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Consolas, "Liberation Mono", Courier, monospace;

  /* Premium Cyber Theme Palette */
  --bg-dark: #0a0e17;
  --card-bg: rgba(16, 22, 37, 0.65);
  --card-bg-hover: rgba(22, 31, 51, 0.8);
  --border-light: rgba(255, 255, 255, 0.05);
  --border-active: rgba(0, 240, 255, 0.2);
  
  --color-cyan: #00f0ff;
  --color-pink: #ff007f;
  --color-green: #39ff14;
  --color-yellow: #ffd700;
  --color-red: #ff3131;
  --color-purple: #8a2be2;
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.15);
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base resets & styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-title);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  line-height: 1.5;
}

/* Background animated blobs */
.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  opacity: 0.15;
  pointer-events: none;
  animation: float-blob 20s infinite alternate ease-in-out;
}

.blob-1 {
  width: 500px;
  height: 500px;
  background: var(--color-cyan);
  top: -100px;
  right: -100px;
  animation-duration: 25s;
}

.blob-2 {
  width: 600px;
  height: 600px;
  background: var(--color-purple);
  bottom: -200px;
  left: -150px;
  animation-duration: 30s;
}

.blob-3 {
  width: 400px;
  height: 400px;
  background: var(--color-pink);
  top: 40%;
  left: 30%;
  animation-duration: 20s;
}

@keyframes float-blob {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(50px, -50px) scale(1.1); }
  100% { transform: translate(-30px, 40px) scale(0.9); }
}

/* Scrollbar customizations */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: rgba(10, 14, 23, 0.5);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-active);
}

/* Container */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  flex-wrap: wrap;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  color: var(--bg-dark);
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
}

.brand h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(to right, #fff, var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 0.7rem;
  letter-spacing: 3px;
  color: var(--text-muted);
  font-weight: 600;
}

.sys-summary {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.sys-item {
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.sys-label {
  color: var(--text-dim);
  font-size: 0.65rem;
  letter-spacing: 1px;
}

.sys-val {
  color: var(--text-main);
  font-weight: 500;
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Status Indicator */
.status-indicator {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
  background: rgba(57, 255, 20, 0.05);
  border: 1px solid rgba(57, 255, 20, 0.2);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-green);
  box-shadow: 0 0 10px var(--color-green);
  display: inline-block;
}

.status-dot.offline {
  background-color: var(--color-red);
  box-shadow: 0 0 10px var(--color-red);
}

.status-dot.connecting {
  background-color: var(--color-yellow);
  box-shadow: 0 0 10px var(--color-yellow);
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0% { opacity: 0.3; }
  50% { opacity: 1; }
  100% { opacity: 0.3; }
}

.status-text {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-green);
}

/* Grid Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

/* Card layout styles */
.card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card:hover {
  border-color: var(--border-active);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card), 0 4px 20px rgba(0, 240, 255, 0.03);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-title svg {
  color: var(--color-cyan);
}

.card-title h2 {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-main);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, #99f);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.card-content {
  flex-grow: 1;
}

/* Custom styles for grid items positioning */
.cpu-card {
  grid-column: span 6;
}

.memory-card {
  grid-column: span 6;
}

.storage-card {
  grid-column: span 4;
}

.network-card {
  grid-column: span 4;
}

.service-card {
  grid-column: span 4;
}

.pm2-card {
  grid-column: span 6;
}

.processes-card {
  grid-column: span 6;
}

/* Responsiveness for dashboard grid */
@media (max-width: 1024px) {
  .cpu-card, .memory-card, .pm2-card, .processes-card {
    grid-column: span 12;
  }
  .storage-card, .network-card, .service-card {
    grid-column: span 6;
  }
}

@media (max-width: 768px) {
  .storage-card, .network-card, .service-card {
    grid-column: span 12;
  }
  .container {
    padding: 1rem;
  }
}

/* Metric Split Layout (Gauge on left, chart on right) */
.metric-split {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.gauge-container {
  position: relative;
  width: 120px;
  height: 120px;
  flex-shrink: 0;
  margin: 0 auto;
}

.radial-gauge {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.radial-gauge circle {
  fill: none;
  stroke-width: 8;
}

.radial-gauge .gauge-bg {
  stroke: rgba(255, 255, 255, 0.05);
}

.radial-gauge .gauge-progress {
  stroke-linecap: round;
  transition: stroke-dashoffset 0.8s ease-in-out;
}

.gauge-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.gauge-percent {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
}

.gauge-sub {
  font-size: 0.55rem;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.chart-container {
  flex-grow: 1;
  height: 120px;
  min-width: 180px;
}

/* CPU Cores Breakdown */
.cpu-cores-container {
  margin-top: 1rem;
  border-top: 1px solid var(--border-light);
  padding-top: 1rem;
}

.cpu-cores-container h3 {
  font-size: 0.75rem;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.cpu-cores-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 0.75rem;
}

.core-bar-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.core-label-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.65rem;
}

.core-name {
  color: var(--text-muted);
}

.core-val {
  color: var(--color-cyan);
}

.core-track {
  height: 5px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  overflow: hidden;
}

.core-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-purple));
  border-radius: 10px;
  transition: width 0.5s ease-out;
}

/* RAM Details */
.ram-details {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
  border-top: 1px solid var(--border-light);
  padding-top: 1rem;
  gap: 1rem;
}

.ram-detail-item {
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
}

.detail-label {
  font-size: 0.6rem;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.detail-val {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-main);
  margin-top: 0.2rem;
}

/* Storage List */
.storage-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.storage-item {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.storage-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.storage-name {
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.storage-mount {
  font-size: 0.65rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.storage-stats {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.progress-bar-container {
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 4px;
  transition: width 1s ease-out;
}

/* Network Monitor */
.network-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.network-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.network-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.net-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.net-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-cyan);
}

.net-status {
  font-size: 0.65rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-weight: 700;
}

.net-status.up {
  background: rgba(57, 255, 20, 0.1);
  color: var(--color-green);
  border: 1px solid rgba(57, 255, 20, 0.2);
}

.net-status.down {
  background: rgba(255, 49, 49, 0.1);
  color: var(--color-red);
  border: 1px solid rgba(255, 49, 49, 0.2);
}

.net-speeds {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.speed-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: 0.5rem;
  border-radius: 8px;
}

.speed-icon-down {
  color: var(--color-cyan);
}

.speed-icon-up {
  color: var(--color-pink);
}

.speed-details {
  display: flex;
  flex-direction: column;
}

.speed-title {
  font-size: 0.55rem;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.speed-val {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Service Health Grid */
.service-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 250px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.service-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: 0.65rem 0.8rem;
  border-radius: 10px;
  transition: var(--transition-smooth);
}

.service-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.service-meta {
  display: flex;
  flex-direction: column;
}

.service-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.service-url {
  font-size: 0.65rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.service-status-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.service-latency {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-delete-service {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.2rem;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.btn-delete-service:hover {
  color: var(--color-red);
  background: rgba(255, 49, 49, 0.1);
}

/* Process Explorer and PM2 tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.03);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.8rem;
}

th, td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

th {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.5px;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.01);
}

/* PM2 App Table specific */
.badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.badge-pm2 {
  background: rgba(0, 240, 255, 0.1);
  color: var(--color-cyan);
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.pm2-status-online {
  color: var(--color-green);
  font-weight: 600;
}

.pm2-status-stopped {
  color: var(--color-red);
  font-weight: 600;
}

.pm2-status-errored {
  color: var(--color-pink);
  font-weight: 600;
}

.no-pm2-msg {
  text-align: center;
  color: var(--text-dim);
  padding: 2rem 0;
  font-size: 0.85rem;
  display: none;
}

/* Search Box & Inputs */
.search-box input {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  color: #fff;
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  outline: none;
  font-family: var(--font-title);
  width: 180px;
  transition: var(--transition-smooth);
}

.search-box input:focus {
  border-color: var(--color-cyan);
  background: rgba(0, 240, 255, 0.02);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.1);
  width: 220px;
}

/* Process Explorer Table styles */
.proc-table td {
  font-family: var(--font-mono);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition-smooth);
  font-family: var(--font-title);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cyan), var(--color-purple));
  color: var(--bg-dark);
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.2);
}

.btn-primary:hover {
  opacity: 0.95;
  box-shadow: 0 4px 20px rgba(0, 240, 255, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: #111827;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  border-radius: 16px;
  width: 400px;
  max-width: 90%;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transform: translateY(20px);
  transition: var(--transition-smooth);
}

.modal-backdrop.open .modal {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 1.15rem;
  color: #fff;
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-close:hover {
  color: #fff;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.form-group input {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  color: #fff;
  padding: 0.6rem 0.8rem;
  outline: none;
  font-size: 0.85rem;
  font-family: var(--font-title);
  transition: var(--transition-smooth);
}

.form-group input:focus {
  border-color: var(--color-cyan);
  background: rgba(0, 240, 255, 0.01);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Footer note */
.footer-note {
  text-align: center;
  font-size: 0.65rem;
  color: var(--text-dim);
  letter-spacing: 1px;
  font-family: var(--font-mono);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.card-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-paused {
  background: rgba(255, 49, 49, 0.15) !important;
  color: var(--color-red) !important;
  border: 1px solid rgba(255, 49, 49, 0.4) !important;
  box-shadow: 0 0 10px rgba(255, 49, 49, 0.2);
}

/* Explorer Layout */
.explorer-card {
  grid-column: span 12;
}

.explorer-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-grow: 1;
  justify-content: flex-end;
  max-width: 70%;
}

.path-input-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-grow: 1;
  max-width: 600px;
}

.path-input-container input {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  color: #fff;
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  outline: none;
  font-family: var(--font-mono);
  flex-grow: 1;
  transition: var(--transition-smooth);
}

.path-input-container input:focus {
  border-color: var(--color-cyan);
  background: rgba(0, 240, 255, 0.02);
}

.explorer-table {
  font-family: var(--font-title);
}

.explorer-table tbody td {
  padding: 0.6rem 1rem;
}

.exp-item-name {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  cursor: pointer;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.exp-item-name:hover {
  color: var(--color-cyan);
}

.exp-icon-dir {
  color: var(--color-yellow);
}

.exp-icon-file {
  color: var(--text-dim);
}

.exp-item-size {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-align: right;
  color: var(--text-muted);
}

.exp-item-mtime {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.exp-item-type {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Tab navigation styling */
.tab-nav {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem;
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  margin-bottom: 0.5rem;
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-title);
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: var(--transition-smooth);
  font-size: 0.8rem;
  letter-spacing: 1px;
}

.tab-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.02);
}

.tab-btn.active {
  color: var(--color-cyan);
  background: rgba(0, 240, 255, 0.05);
  border-color: rgba(0, 240, 255, 0.2);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.05);
}

/* Tab content logic */
.tab-content {
  display: none;
}

.tab-content.active {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

/* Layout overrides for Cards under Tab System */
.storage-card, .network-card, .pm2-card, .service-card {
  grid-column: span 6;
}

.processes-card {
  grid-column: span 12;
}

@media (max-width: 1024px) {
  .storage-card, .network-card, .pm2-card, .service-card {
    grid-column: span 12;
  }
}

/* Split Layout File Explorer & Tree View */
.explorer-layout {
  display: flex;
  gap: 1.5rem;
  width: 100%;
  align-items: stretch;
}

.explorer-sidebar {
  width: 260px;
  flex-shrink: 0;
  border-right: 1px solid var(--border-light);
  padding-right: 1rem;
  overflow-y: auto;
  max-height: 400px;
}

.explorer-main {
  flex-grow: 1;
  overflow: hidden;
}

.tree-root-header {
  display: flex;
  align-items: center;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  margin-bottom: 0.5rem;
}

.tree-container {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.tree-node {
  display: flex;
  flex-direction: column;
}

.tree-node-header {
  display: flex;
  align-items: center;
  padding: 0.35rem 0.5rem;
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-smooth);
  gap: 0.4rem;
  user-select: none;
}

.tree-node-header:hover {
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-cyan);
}

.tree-node-header.active {
  background: rgba(0, 240, 255, 0.05);
  color: var(--color-cyan);
  border-left: 2px solid var(--color-cyan);
  border-radius: 0 6px 6px 0;
}

.tree-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  color: var(--text-dim);
  transition: transform 0.2s ease;
  font-size: 0.55rem;
}

.tree-toggle.expanded {
  transform: rotate(90deg);
}

.tree-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  font-size: 0.85rem;
}

.tree-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.8rem;
}

.tree-node-children {
  padding-left: 0.85rem;
  border-left: 1px dotted rgba(255, 255, 255, 0.08);
  margin-left: 0.65rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-top: 0.1rem;
}

@media (max-width: 768px) {
  .explorer-layout {
    flex-direction: column;
    gap: 1rem;
  }
  
  .explorer-sidebar {
    width: 100%;
    max-height: 200px;
    border-right: none;
    border-bottom: 1px solid var(--border-light);
    padding-right: 0;
    padding-bottom: 1rem;
  }
}