/* ============================================================
   Computer Control — Design System
   Dark glassmorphism theme with animated gradients
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors — Dark palette with vibrant accents */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-elevated: #1a1a2e;

  --glass-bg: rgba(26, 26, 46, 0.6);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);

  --text-primary: #e8e8f0;
  --text-secondary: #8888a8;
  --text-muted: #55556a;

  --accent-primary: #6c5ce7;
  --accent-primary-light: #a29bfe;
  --accent-secondary: #00cec9;
  --accent-glow: rgba(108, 92, 231, 0.3);

  --success: #00d2a0;
  --success-glow: rgba(0, 210, 160, 0.25);
  --danger: #ff6b6b;
  --danger-glow: rgba(255, 107, 107, 0.25);
  --warning: #ffa726;
  --warning-glow: rgba(255, 167, 38, 0.25);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

#app {
  position: relative;
  min-height: 100vh;
}

/* --- Ambient Background --- */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.ambient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-primary), transparent);
  top: -150px;
  right: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--accent-secondary), transparent);
  bottom: -100px;
  left: -100px;
  animation-delay: -7s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #fd79a8, transparent);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.2;
  animation-delay: -14s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(40px, -60px) scale(1.1); }
  50% { transform: translate(-30px, 40px) scale(0.9); }
  75% { transform: translate(50px, 20px) scale(1.05); }
}

/* --- Screen Container --- */
.screen {
  position: relative;
  z-index: 1;
  display: none;
  min-height: 100vh;
  animation: fadeIn 0.5s ease;
}

.screen.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Glass Card --- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}

/* ============================================================
   CONNECTION SCREEN
   ============================================================ */
#connectScreen {
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.connect-card {
  width: 100%;
  max-width: 460px;
  padding: 40px 36px;
}

.connect-header {
  text-align: center;
  margin-bottom: 32px;
}

.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px var(--accent-glow);
}

.logo-icon.small {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  margin: 0;
}

.connect-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* --- Form Styles --- */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.optional {
  color: var(--text-muted);
  font-weight: 400;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.input-wrapper input {
  width: 100%;
  padding: 12px 14px 12px 42px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
  outline: none;
}

.input-wrapper input::placeholder {
  color: var(--text-muted);
}

.input-wrapper input:focus {
  border-color: var(--accent-primary);
  background: rgba(108, 92, 231, 0.06);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-wrapper input:focus ~ .input-icon,
.input-wrapper:focus-within .input-icon {
  color: var(--accent-primary-light);
}

/* Checkbox */
.form-actions {
  margin-bottom: 24px;
}

.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  user-select: none;
}

.checkbox-wrapper input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.checkbox-wrapper input:checked + .checkmark {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.checkbox-wrapper input:checked + .checkmark::after {
  content: '✓';
  color: white;
  font-size: 11px;
  font-weight: 700;
}

/* Primary Button */
.btn-primary {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--accent-primary), #5a4dcc);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-family: var(--font-family);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

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

/* Error */
.error-message {
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.2);
  border-radius: var(--radius-sm);
  color: var(--danger);
  font-size: 0.8125rem;
  text-align: center;
}

/* ============================================================
   DASHBOARD
   ============================================================ */
#dashboardScreen {
  flex-direction: column;
}

.dash-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.dash-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.dash-header-left h2 {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.3px;
}

.dash-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.connection-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(0, 210, 160, 0.1);
  color: var(--success);
  border: 1px solid rgba(0, 210, 160, 0.15);
  transition: all var(--transition-normal);
}

.connection-badge.disconnected {
  background: rgba(255, 107, 107, 0.1);
  color: var(--danger);
  border-color: rgba(255, 107, 107, 0.15);
}

.connection-badge.reconnecting {
  background: rgba(255, 167, 38, 0.1);
  color: var(--warning);
  border-color: rgba(255, 167, 38, 0.15);
}

.conn-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.btn-icon-only {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon-only:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
}

.btn-icon-only.danger:hover {
  background: rgba(255, 107, 107, 0.1);
  color: var(--danger);
  border-color: rgba(255, 107, 107, 0.2);
}

/* --- Dashboard Main --- */
.dash-main {
  padding: 24px;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* --- Status Hero --- */
.status-hero {
  padding: 40px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.status-ring {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 3px solid var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all var(--transition-slow);
}

.status-ring::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--text-muted);
  animation: statusSpin 3s linear infinite;
  transition: border-color var(--transition-slow);
}

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

.status-ring.online {
  border-color: var(--success);
  box-shadow: 0 0 40px var(--success-glow), inset 0 0 30px var(--success-glow);
}

.status-ring.online::before {
  border-top-color: var(--success);
}

.status-ring.offline {
  border-color: var(--danger);
  box-shadow: 0 0 40px var(--danger-glow), inset 0 0 30px var(--danger-glow);
}

.status-ring.offline::before {
  border-top-color: var(--danger);
}

.status-ring.unknown {
  border-color: var(--warning);
  box-shadow: 0 0 40px var(--warning-glow), inset 0 0 30px var(--warning-glow);
}

.status-ring.unknown::before {
  border-top-color: var(--warning);
}

.status-inner {
  text-align: center;
}

.status-icon {
  margin-bottom: 8px;
  color: var(--text-secondary);
  transition: color var(--transition-slow);
}

.status-ring.online .status-icon { color: var(--success); }
.status-ring.offline .status-icon { color: var(--danger); }
.status-ring.unknown .status-icon { color: var(--warning); }

.status-label {
  font-size: 1.125rem;
  font-weight: 600;
}

.status-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* --- Control Buttons --- */
.controls-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.control-btn {
  position: relative;
  border: none;
  cursor: pointer;
  padding: 28px 20px;
  text-align: center;
  overflow: hidden;
  transition: all var(--transition-normal);
  color: var(--text-primary);
}

.control-btn-bg {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.power-btn .control-btn-bg {
  background: linear-gradient(135deg, rgba(0, 210, 160, 0.15), rgba(0, 206, 201, 0.08));
}

.restart-btn .control-btn-bg {
  background: linear-gradient(135deg, rgba(108, 92, 231, 0.15), rgba(162, 155, 254, 0.08));
}

.control-btn:hover .control-btn-bg {
  opacity: 1;
}

.control-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--glass-shadow);
}

.control-btn:active {
  transform: translateY(0);
}

.control-btn.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(0.3);
}

.control-btn.disabled:hover {
  transform: none;
  box-shadow: var(--glass-shadow);
}

.control-btn.loading {
  pointer-events: none;
}

.control-btn-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.control-icon {
  transition: transform var(--transition-normal);
}

.control-btn:hover:not(.disabled) .control-icon {
  transform: scale(1.15);
}

.power-btn .control-icon { color: var(--success); }
.restart-btn .control-icon { color: var(--accent-primary-light); }

.control-label {
  font-size: 1rem;
  font-weight: 600;
}

.control-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* --- Info Grid --- */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.info-card {
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.info-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(108, 92, 231, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary-light);
  flex-shrink: 0;
}

.info-card-content {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.info-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.info-value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --- Activity Log --- */
.activity-panel {
  padding: 20px;
}

.panel-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

.activity-list {
  max-height: 240px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.activity-list::-webkit-scrollbar {
  width: 4px;
}

.activity-list::-webkit-scrollbar-track {
  background: transparent;
}

.activity-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

.activity-empty {
  color: var(--text-muted);
  font-size: 0.8125rem;
  text-align: center;
  padding: 20px;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.02);
  font-size: 0.8125rem;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.activity-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.activity-dot.info { background: var(--accent-secondary); }
.activity-dot.success { background: var(--success); }
.activity-dot.error { background: var(--danger); }
.activity-dot.warning { background: var(--warning); }

.activity-text {
  flex: 1;
  color: var(--text-secondary);
}

.activity-time {
  font-size: 0.6875rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

/* --- Toast Notifications --- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  padding: 12px 18px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  animation: toastIn 0.4s ease, toastOut 0.4s ease forwards;
  animation-delay: 0s, 3s;
  max-width: 360px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast.success {
  background: rgba(0, 210, 160, 0.15);
  border: 1px solid rgba(0, 210, 160, 0.25);
  color: var(--success);
}

.toast.error {
  background: rgba(255, 107, 107, 0.15);
  border: 1px solid rgba(255, 107, 107, 0.25);
  color: var(--danger);
}

.toast.info {
  background: rgba(108, 92, 231, 0.15);
  border: 1px solid rgba(108, 92, 231, 0.25);
  color: var(--accent-primary-light);
}

.toast.warning {
  background: rgba(255, 167, 38, 0.15);
  border: 1px solid rgba(255, 167, 38, 0.25);
  color: var(--warning);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(40px); }
}

/* --- Responsive --- */
@media (max-width: 600px) {
  .connect-card {
    padding: 28px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .dash-header {
    padding: 12px 16px;
  }

  .dash-main {
    padding: 16px;
  }

  .controls-grid {
    grid-template-columns: 1fr;
  }

  .info-grid {
    grid-template-columns: 1fr;
  }

  .status-ring {
    width: 150px;
    height: 150px;
  }

  .control-btn {
    padding: 22px 16px;
  }

  .toast-container {
    left: 16px;
    right: 16px;
    bottom: 16px;
  }

  .toast {
    max-width: 100%;
  }

  .connection-badge .conn-text {
    display: none;
  }
}

@media (max-width: 380px) {
  .connect-header h1 {
    font-size: 1.4rem;
  }
}