/*  Theme variables  */
:root {
  /* Light (default) */
  --bg: #e0e0e0;
  --text: #333333;
  --label: #555555;
  --card: #e0e0e0;
  --shadow-dark: #bebebe;
  --shadow-light: #ffffff;
  --accent: #333333;
  --terminal-bg: #121212;
  --terminal-fg: #f1f1f1;
  --terminal-dim: #b5b5b5;
  --terminal-accent: #4caf50;
}

body[data-theme="dark"] {
  /* Dark */
  --bg: #1f1f1f;
  --text: #e6e6e6;
  --label: #b8b8b8;
  --card: #1f1f1f;
  --shadow-dark: #141414;
  --shadow-light: #2a2a2a;
  --accent: #e6e6e6;
  --terminal-bg: #0d0d0d;
  --terminal-fg: #e6e6e6;
  --terminal-dim: #9a9a9a;
  --terminal-accent: #7bd88f;
}

body[data-theme="monero"] {
  /* Monero */
  --monero-orange: #F26822;
  --monero-gray: #4C4C4C;

  --bg: #3b3b3b;
  --card: #3b3b3b;
  --shadow-dark: #262626;
  --shadow-light: #4a4a4a;

  --text: #e6e6e6;
  --label: #F26822;
  --accent: var(--monero-orange);
  --terminal-bg: #232323;
  --terminal-fg: #f4f4f4;
  --terminal-dim: #c8c8c8;
  --terminal-accent: var(--monero-orange);
}

/* Base layout */
* {
  box-sizing: border-box;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  display: flex;
  justify-content: center;
  padding: 20px;
  margin: 0;
  min-height: 100vh;
  transition: background 0.2s ease, color 0.2s ease;
}

.container {
  width: 100%;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.08);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  z-index: 1000;
  transition: opacity 0.25s ease;
}

.loading-overlay.is-hidden {
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
}

.loading-overlay .loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 28px 36px;
  border-radius: 18px;
  background: var(--card);
  color: var(--text);
  box-shadow: 12px 12px 24px var(--shadow-dark), -12px -12px 24px var(--shadow-light);
  text-align: center;
}

.loading-overlay .loading-spinner {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 4px solid rgba(0, 0, 0, 0.1);
  border: 4px solid rgba(128, 128, 128, 0.2);
  border-top-color: var(--accent);
  /* hint and force GPU compositing to reduce paint cost */
  will-change: transform;
  transform: translateZ(0) rotate(0deg);
  backface-visibility: hidden;
  transform-origin: center;
  animation: spin 1s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
  .loading-overlay .loading-spinner {
    animation: none;
    transform: none;
  }
}

@keyframes spin {
  from { transform: rotate(0deg); } /* explicit start */
  to   { transform: rotate(360deg); }
}

/* Header + Theme picker */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 20px;
  position: relative;
  z-index: 10;
}

.toolbar-controls {
  display: inline-flex;
  gap: 12px;
  align-items: center;
}

h1 {
  margin: 0;
  color: var(--accent);
  text-align: left;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.theme-picker {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-size: 0.95rem;
  color: var(--label);
}

.theme-picker select {
  appearance: none;
  border: none;
  padding: 8px 12px;
  border-radius: 14px;
  background: var(--card);
  color: var(--text);
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
  outline: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.icon-button {
  border: none;
  background: var(--card);
  color: var(--text);
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
  border-radius: 12px;
  padding: 10px 12px;
  cursor: pointer;
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: box-shadow 0.2s ease;
}

.icon-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.menu-wrapper {
  position: relative;
  z-index: 20;
}

.menu {
  position: absolute;
  right: 0;
  margin-top: 8px;
  background: var(--card);
  border-radius: 12px;
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
  display: none;
  min-width: 180px;
  padding: 8px 0;
  z-index: 999;
}

.menu.open {
  display: block;
}

.menu-title {
  padding: 6px 16px;
  font-weight: bold;
  color: var(--label);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.menu-item {
  display: block;
  padding: 10px 16px;
  color: var(--text);
  text-decoration: none;
}

.menu-item:hover,
.menu-item:focus-visible {
  background: color-mix(in srgb, var(--card) 80%, var(--accent));
  color: var(--text);
}

/* Brand logo + title */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand img {
  display: block;
  border-radius: 8px;
}

/* Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.theme-root {
  margin-bottom: 20px;
}

.theme-root:empty {
  margin-bottom: 0;
}

.mode-banner {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px;
  margin-bottom: 20px;
  background: var(--card);
  border-radius: 18px;
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
}

.mode-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
}

.mode-subtitle {
  font-size: 0.9rem;
  color: var(--label);
}

.card {
  background: var(--card);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.label {
  font-size: 0.9rem;
  color: var(--label);
}

.value {
  overflow-wrap: anywhere;
  word-break: break-word;
  line-height: 1.2;
  font-size: 1.4rem;
  margin-top: 8px;
}

.terminal-card .label {
  margin-bottom: 8px;
}

.terminal-card {
  grid-column: 1 / -1;
}

.terminal {
  margin: 0;
  background: var(--terminal-bg);
  color: var(--terminal-fg);
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.35;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--terminal-bg) 70%, var(--terminal-dim));
  max-height: clamp(220px, 32vh, 360px);
  overflow-y: auto;
  white-space: pre-wrap;
  scrollbar-color: color-mix(in srgb, var(--terminal-accent) 60%, transparent) transparent;
}

.theme-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.theme-card {
  background: var(--card);
  border-radius: 16px;
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.theme-card header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.theme-card .meta {
  font-size: 0.9rem;
  color: var(--label);
}

.theme-preview {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: color-mix(in srgb, var(--card) 70%, var(--accent));
  border-radius: 12px;
  object-fit: cover;
  box-shadow: inset 6px 6px 12px var(--shadow-dark), inset -6px -6px 12px var(--shadow-light);
}

.theme-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.theme-actions button,
.theme-actions a {
  border: none;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  background: var(--accent);
  color: var(--bg);
  text-decoration: none;
  font-weight: 600;
}

.theme-actions button.secondary {
  background: var(--card);
  color: var(--text);
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
}

/* Footer */
.footer {
  margin-top: 20px;
  padding: 16px 20px;
  background: var(--card);
  color: var(--label);
  border-radius: 16px;
  box-shadow: 9px 9px 16px var(--shadow-dark), -9px -9px 16px var(--shadow-light);
  transition: background 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
  font-size: 0.95rem;
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-brand {
  color: var(--label);
}

.footer-brand #build-details {
  font-size: 0.9rem;
  color: var(--text);
}

.footer-brand #version {
  margin-left: .35rem;
  opacity: .85;
}

.footer .sep {
  margin: 0 .45rem;
  opacity: .4;
}

.footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer a:hover,
.footer a:focus {
  text-decoration: underline;
}

/* Glassmorphism panel for WASM controls/login */
.glass-panel {
  backdrop-filter: blur(8px) saturate(120%);
  background: linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  display: flex;
  gap: 12px;
  align-items: center;
}

.glass-panel .btn {
  padding: 10px 14px;
  border-radius: 12px;
  background: rgba(0,0,0,0.6);
  color: var(--card);
  border: none;
  cursor: pointer;
}

.glass-panel .status {
  font-weight: 600;
  color: var(--accent);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.hero-panel {
  min-height: 180px;
}

.hero-panel-wide {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: stretch;
}

.hero-panel-stack {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-copy h2,
.section-heading h3 {
  margin: 6px 0 0;
  font-size: clamp(1.4rem, 2vw, 2.2rem);
  color: var(--text);
}

.hero-copy p,
.section-note {
  color: var(--label);
  margin: 8px 0 0;
  line-height: 1.5;
}

.hero-kicker {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.72rem;
  color: color-mix(in srgb, var(--accent) 68%, transparent);
}

.hero-metrics {
  display: grid;
  gap: 12px;
  min-width: 240px;
}

.mini-metric {
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255,255,255,0.05);
}

.mini-metric-label {
  display: block;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--label);
  margin-bottom: 6px;
}

.hero-inline {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

.hero-inline input {
  width: 110px;
  padding: 10px 12px;
  border-radius: 12px;
  border: none;
  background: rgba(0,0,0,0.3);
  color: var(--text);
}

.hero-result {
  margin-top: 12px;
  color: var(--label);
  min-height: 1.4em;
}

.roster-banner {
  justify-content: space-between;
}

.roster-banner > div:last-child {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.status-area,
.chart-area {
  grid-column: 1 / -1;
  margin-bottom: 20px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.chart-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 180px;
}

.chart-title {
  font-weight: 600;
  color: var(--text);
}

.sparkline-chart {
  width: 100%;
  height: 110px;
  overflow: visible;
}

.sparkline-chart .chart-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sparkline-chart .chart-fill {
  fill: rgba(80, 190, 255, 0.12);
}

.sparkline-chart .chart-axis {
  stroke: rgba(255,255,255,0.08);
  stroke-width: 1;
}

.device-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.device-card {
  position: relative;
  overflow: hidden;
}

.device-card-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.status-pill {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-pill.online {
  background: rgba(76, 175, 80, 0.18);
  color: #7ef08a;
}

.status-pill.stale {
  background: rgba(255, 193, 7, 0.16);
  color: #ffd76b;
}

.status-pill.offline {
  background: rgba(244, 67, 54, 0.16);
  color: #ff9090;
}

.status-pill.paused {
  background: rgba(255, 152, 0, 0.16);
  color: #ffb74d;
}

.status-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
}

.device-meta {
  margin-top: 10px;
  color: var(--label);
  font-size: 0.94rem;
  line-height: 1.45;
}

.device-stats {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.device-stat {
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(0,0,0,0.18);
}

.device-stat span {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--label);
  margin-bottom: 4px;
}

.device-actions {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Modal styles for login and edit dialogs */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.modal-overlay.open { display: flex; }
.modal {
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border-radius: 12px;
  padding: 20px;
  width: 420px;
  max-width: calc(100% - 40px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
  border: 1px solid rgba(255,255,255,0.06);
}
.modal h2 { margin: 0 0 12px 0; color: var(--accent); }
.modal .form-row { display:flex; flex-direction:column; gap:6px; margin-bottom:10px; }
.modal input[type="text"], .modal input[type="email"], .modal input[type="password"], .modal textarea {
  padding: 10px 12px; border-radius: 8px; border: none; background: rgba(0,0,0,0.35); color: var(--text);
}
.modal input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}
.modal label span {
  float: right;
  color: var(--text);
  font-weight: 600;
}
.modal .actions { display:flex; gap:8px; justify-content:flex-end; margin-top:8px; }
.modal .actions .btn { padding:8px 12px; border-radius:8px; }

/* Roster card tweaks */
.theme-card header { align-items: center; }
.theme-card .meta { font-weight:600; }
.theme-card .theme-actions { margin-top:8px; display:flex; gap:8px; }
.theme-card .btn.secondary { background: transparent; border: 1px solid rgba(255,255,255,0.06); color: var(--text); }

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .hero-panel-wide {
    flex-direction: column;
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
  }
}