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

:root {
  --bg-primary: #0D1117;
  --bg-secondary: #161B22;
  --bg-tertiary: #21262D;
  --bg-hover: #30363D;
  --border-color: #30363D;
  --text-primary: #E6EDF3;
  --text-secondary: #8B949E;
  --text-muted: #484F58;
  --accent: #6C5CE7;
  --accent-hover: #7C6FF7;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --danger: #F85149;
  --danger-hover: #FF6B63;
  --success: #3FB950;
  --warning: #D29922;
  --info: #58A6FF;
  --font-mono: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.15s ease;
}

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
}

.fullscreen {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Auth */
.auth-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px;
  width: 380px;
  max-width: 90vw;
  text-align: center;
  box-shadow: var(--shadow);
}

.auth-logo { margin-bottom: 16px; }

.auth-container h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.input-group {
  margin-bottom: 16px;
  text-align: left;
}

.input-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-field, input[type="text"], input[type="password"], input[type="number"], select, textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition);
}

.input-field:focus, input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-sm { padding: 6px 10px; font-size: 13px; }

textarea {
  resize: vertical;
  min-height: 80px;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238B949E' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  font-family: var(--font-sans);
}

.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
  font-family: var(--font-sans);
}

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

.btn-sm { padding: 6px 14px; font-size: 13px; }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}

.btn-danger:hover { background: rgba(248, 81, 73, 0.1); color: var(--danger-hover); }

.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}

.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-icon.btn-sm { padding: 4px; }

.apk-download-link {
  position: fixed;
  top: calc(12px + env(safe-area-inset-top));
  right: calc(12px + env(safe-area-inset-right));
  z-index: 180;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 94px;
  min-height: 38px;
  padding: 8px 12px;
  background: var(--success);
  color: #ffffff;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.28);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}

.apk-download-link:hover {
  background: #46c85a;
  transform: translateY(-1px);
}

.apk-download-link:active { transform: translateY(0); }

.auth-error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  min-height: 20px;
}

/* Sidebar */
#sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: 220px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  z-index: 100;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

#sidebar-nav {
  flex: 1;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
  text-align: left;
  width: 100%;
  font-family: var(--font-sans);
}

.nav-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-btn.active { background: var(--accent); color: white; }

.sidebar-footer {
  padding: 8px;
  border-top: 1px solid var(--border-color);
}

/* Main Content */
#main-content {
  position: fixed;
  left: 220px; top: 0; right: 0; bottom: 0;
  overflow-y: auto;
}

.view {
  display: none;
  padding: 24px;
  height: 100%;
}

.view.active { display: flex; flex-direction: column; }

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 24px;
  padding-right: 118px;
  flex-shrink: 0;
}

.view-header h2 {
  font-size: 22px;
  font-weight: 700;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted);
  text-align: center;
  gap: 16px;
  flex: 1;
}

/* Host Cards */
.host-groups { display: flex; flex-direction: column; gap: 24px; }

.host-group-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
  padding: 0 4px;
}

.host-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 12px;
}

.host-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.host-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
  border-radius: var(--radius) 0 0 var(--radius);
}

.host-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.host-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.host-card-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.host-card-meta {
  font-size: 12px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.host-card-actions {
  display: flex;
  gap: 4px;
}

.host-card-actions .btn-icon {
  opacity: 0;
  transition: opacity var(--transition);
}

.host-card:hover .host-card-actions .btn-icon { opacity: 1; }

/* Terminal */
#view-terminal {
  padding: 0;
  display: none;
}

#view-terminal.active { display: flex; }

.terminal-toolbar {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  gap: 8px;
  flex-shrink: 0;
}

.terminal-toolbar-right {
  margin-left: auto;
  display: flex;
  gap: 4px;
  padding-right: 118px;
}

#terminal-host-label {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
}

.terminal-container {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.terminal-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-secondary);
  gap: 12px;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.xterm { height: 100%; padding: 4px; }

/* SFTP Panel */
.sftp-panel {
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  max-height: 40%;
  min-height: 200px;
}

.sftp-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border-color);
  gap: 8px;
  flex-wrap: wrap;
}

.sftp-path {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  min-width: 200px;
}

.sftp-host-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  white-space: nowrap;
}

#sftp-path-input { width: auto; flex: 1; max-width: 400px; }

.sftp-actions { display: flex; gap: 4px; }

.sftp-table-container { flex: 1; overflow: auto; }

.sftp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.sftp-table th {
  text-align: left;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
}

.sftp-table td {
  padding: 6px 12px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
}

.sftp-table tr:hover td { background: var(--bg-tertiary); }

.sftp-table .dir-row { cursor: pointer; }
.sftp-table .dir-row td:first-child { color: var(--info); font-weight: 500; }
.sftp-table .file-row td:first-child { font-family: var(--font-mono); font-size: 12px; }

.sftp-table .size-col { font-family: var(--font-mono); font-size: 12px; color: var(--text-secondary); white-space: nowrap; }
.sftp-table .mtime-col { font-size: 12px; color: var(--text-secondary); white-space: nowrap; }
.sftp-table .actions-col { white-space: nowrap; text-align: right; }

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  backdrop-filter: blur(4px);
}

.modal {
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: var(--shadow);
  z-index: 201;
  width: 520px;
  max-width: 92vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.editor-modal { width: 700px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 { font-size: 16px; font-weight: 600; }

.modal-close { font-size: 20px; }

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-body .input-group { margin-bottom: 14px; }

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

.form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* Code Editor */
.code-editor {
  width: 100%;
  min-height: 300px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 14px;
  tab-size: 2;
  resize: vertical;
}

.editor-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 12px;
}

/* Snippets Grid */
.snippets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.snippet-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition);
}

.snippet-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.snippet-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.snippet-card pre {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-primary);
  padding: 10px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: pre-wrap;
  max-height: 80px;
  line-height: 1.4;
}

/* Keys List */
.keys-list { display: flex; flex-direction: column; gap: 8px; }

.key-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 12px 16px;
}

.key-card-info { display: flex; align-items: center; gap: 10px; }

.key-card-name { font-weight: 600; }

.key-card-meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* Dashboard */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.metric-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 20px;
}

.metric-card-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.metric-card-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.metric-card-sub {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
  font-family: var(--font-mono);
}

.progress-bar {
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  margin-top: 10px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

.progress-fill.green { background: var(--success); }
.progress-fill.yellow { background: var(--warning); }
.progress-fill.red { background: var(--danger); }

.process-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.process-table th {
  text-align: left;
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-color);
}

.process-table td {
  padding: 5px 10px;
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* Tabs within auth type */
.tab-group {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: var(--radius);
  padding: 2px;
  margin-bottom: 14px;
}

.tab-btn {
  flex: 1;
  padding: 8px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.tab-btn.active {
  background: var(--accent);
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  #sidebar {
    width: 56px;
  }
  #sidebar .sidebar-title,
  #sidebar .nav-btn span {
    display: none;
  }
  #sidebar .nav-btn {
    justify-content: center;
    padding: 10px;
  }
  #sidebar .sidebar-header {
    justify-content: center;
    padding: 12px;
  }
  #main-content { left: 56px; }
  .host-cards { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .view { padding: 16px; }
  .view-header { padding-right: 52px; }
  .terminal-toolbar-right { padding-right: 52px; }
  .apk-download-link {
    min-width: 38px;
    width: 38px;
    min-height: 34px;
    padding: 8px;
  }
  .apk-download-link span { display: none; }
  .sftp-table { font-size: 11px; }
}

@media (max-width: 480px) {
  #sidebar { width: 48px; }
  #main-content { left: 48px; }
  .auth-container { padding: 24px; }
  .modal { width: 96vw; }
  .dashboard-grid { grid-template-columns: 1fr; }
}