/* Official Android.com Design System with Dark/Light Theme Engine */

:root, [data-theme="dark"] {
  --android-bg: #000000;
  --android-surface: #121212;
  --android-surface-container: #1c1c1c;
  --android-surface-high: #242424;
  --android-surface-highest: #2e2e2e;
  
  --android-green: #3ddc84;
  --android-green-dark: #00873a;
  --android-green-dim: rgba(61, 220, 132, 0.14);
  --android-green-border: rgba(61, 220, 132, 0.35);
  
  --android-text-primary: #ffffff;
  --android-text-secondary: #9aa0a6;
  --android-text-muted: #5f6368;
  
  --android-border: rgba(255, 255, 255, 0.12);
  --android-border-subtle: rgba(255, 255, 255, 0.06);
  --android-shadow: none;

  --android-btn-bg: #ffffff;
  --android-btn-text: #000000;
  --android-btn-hover-bg: #3ddc84;
  --android-btn-hover-text: #000000;

  --term-bg: #0a0a0a;
  --term-text: #82fcae;
  --term-input-bg: #141414;
}

[data-theme="light"] {
  --android-bg: #f8f9fa;
  --android-surface: #ffffff;
  --android-surface-container: #f1f3f4;
  --android-surface-high: #e8eaed;
  --android-surface-highest: #dadce0;
  
  --android-green: #00873a;
  --android-green-dark: #005224;
  --android-green-dim: rgba(0, 135, 58, 0.12);
  --android-green-border: rgba(0, 135, 58, 0.3);
  
  --android-text-primary: #202124;
  --android-text-secondary: #5f6368;
  --android-text-muted: #80868b;
  
  --android-border: rgba(0, 0, 0, 0.1);
  --android-border-subtle: rgba(0, 0, 0, 0.05);
  --android-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);

  --android-btn-bg: #202124;
  --android-btn-text: #ffffff;
  --android-btn-hover-bg: #00873a;
  --android-btn-hover-text: #ffffff;

  --term-bg: #1c1f24;
  --term-text: #82fcae;
  --term-input-bg: #14161a;
}

:root {
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --radius-xl: 32px;
  --radius-pill: 9999px;

  --font-sans: "Plus Jakarta Sans", "Google Sans", "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "Roboto Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

body {
  background-color: var(--android-bg);
  color: var(--android-text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 80px 20px;
}

/* Android Top Status Bar */
.android-status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background: var(--android-surface);
  border-radius: var(--radius-pill);
  margin-bottom: 32px;
  border: 1px solid var(--android-border);
  box-shadow: var(--android-shadow);
  font-family: var(--font-mono);
  font-size: 12px;
}

.status-bar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.android-logo-pill {
  background: var(--android-green);
  color: #000000;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.status-bar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--android-text-secondary);
}

.battery-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--android-surface-container);
  border: 1px solid var(--android-border);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 700;
  color: var(--android-green);
}

/* Theme Toggle Pill Button */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--android-surface-container);
  border: 1px solid var(--android-border);
  color: var(--android-text-primary);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.4px;
  transition: all 0.2s ease;
}

.theme-toggle-btn:hover {
  background: var(--android-btn-bg);
  color: var(--android-btn-text);
  border-color: var(--android-btn-bg);
}

/* App Header */
.app-header {
  margin-bottom: 40px;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
}

.header-title-group h1 {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -1.2px;
  color: var(--android-text-primary);
}

.header-title-group p {
  font-size: 16px;
  color: var(--android-text-secondary);
  margin-top: 6px;
  font-weight: 500;
}

.header-badges {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.m3-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
}

.m3-badge.online {
  background: var(--android-green-dim);
  color: var(--android-green);
  border: 1px solid var(--android-green-border);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--android-green);
  box-shadow: 0 0 8px var(--android-green);
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 12px var(--android-green); }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.m3-badge.tonal {
  background: var(--android-surface);
  color: var(--android-text-secondary);
  border: 1px solid var(--android-border);
  box-shadow: var(--android-shadow);
  font-family: var(--font-mono);
}

/* Sections */
.section {
  margin-bottom: 44px;
}

.section-title-wrap {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
  padding: 0 2px;
}

.section-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--android-text-primary);
  letter-spacing: -0.6px;
}

.section-subtitle {
  font-size: 13px;
  color: var(--android-text-secondary);
  font-weight: 500;
}

/* Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

/* Bento Style Cards */
.m3-card {
  background: var(--android-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--android-border);
  box-shadow: var(--android-shadow);
  padding: 24px;
  position: relative;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.m3-card:hover {
  border-color: rgba(255, 255, 255, 0.25);
}

[data-theme="light"] .m3-card:hover {
  border-color: rgba(0, 0, 0, 0.2);
}

.card-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--android-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.card-headline {
  font-size: 30px;
  font-weight: 800;
  color: var(--android-text-primary);
  margin-top: 6px;
  letter-spacing: -0.5px;
}

.card-supporting-text {
  font-size: 12px;
  color: var(--android-text-muted);
  margin-top: 8px;
  font-family: var(--font-mono);
}

/* Progress Bars */
.m3-progress-track {
  width: 100%;
  height: 6px;
  background: var(--android-surface-high);
  border-radius: var(--radius-pill);
  margin-top: 14px;
  overflow: hidden;
}

.m3-progress-fill {
  height: 100%;
  background: var(--android-green);
  border-radius: var(--radius-pill);
  transition: width 0.5s ease;
}

.m3-progress-fill.amber {
  background: #ffb74d;
}

.m3-progress-fill.blue {
  background: var(--android-text-primary);
}

/* Quick Settings Card (Minecraft Server) */
.qs-tile-card {
  background: var(--android-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--android-border);
  box-shadow: var(--android-shadow);
  padding: 26px;
}

.qs-top-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.qs-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--android-green);
  color: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-family: var(--font-mono);
  font-size: 16px;
}

/* Android.com Signature Pill Button */
.m3-button {
  background: var(--android-btn-bg);
  color: var(--android-btn-text);
  border: none;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
  letter-spacing: 0.5px;
  transition: background-color 0.15s ease, transform 0.1s ease, color 0.15s ease;
}

.m3-button:hover {
  background: var(--android-btn-hover-bg);
  color: var(--android-btn-hover-text);
}

.m3-button:active {
  transform: scale(0.96);
}

.mc-motd-banner {
  background: var(--android-surface-container);
  border: 1px solid var(--android-border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--android-green);
  margin-top: 18px;
}

/* Spec Info List */
.device-info-card {
  background: var(--android-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--android-border);
  box-shadow: var(--android-shadow);
  padding: 24px;
}

.info-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--android-border-subtle);
  font-size: 13px;
}

.info-row:last-child {
  border-bottom: none;
}

.info-label {
  color: var(--android-text-secondary);
  font-weight: 500;
}

.info-value {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--android-text-primary);
}

/* Media Container */
.media-container {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--android-surface-container);
  border: 1px solid var(--android-border);
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hardware-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Termux Terminal Window */
.termux-window {
  background: var(--term-bg);
  border: 1px solid var(--android-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--android-shadow);
  overflow: hidden;
}

.termux-app-bar {
  background: var(--android-surface);
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--android-border);
}

.termux-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--android-text-secondary);
}

.termux-chip-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 18px;
  background: var(--android-surface-container);
  border-bottom: 1px solid var(--android-border);
}

.m3-chip {
  background: var(--android-surface-high);
  color: var(--android-text-secondary);
  border: 1px solid var(--android-border);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.m3-chip:hover {
  background: var(--android-btn-bg);
  color: var(--android-btn-text);
  border-color: var(--android-btn-bg);
}

.termux-screen {
  padding: 18px;
  height: 300px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--term-text);
  line-height: 1.45;
  white-space: pre-wrap;
}

.termux-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--term-input-bg);
  border-top: 1px solid var(--android-border);
}

.termux-prompt {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--android-green);
  font-weight: 800;
  white-space: nowrap;
}

.termux-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--android-text-primary);
}

/* Footer */
.app-footer {
  text-align: center;
  font-size: 12px;
  color: var(--android-text-muted);
  margin-top: 50px;
  font-family: var(--font-sans);
}

@media (max-width: 768px) {
  .header-top {
    flex-direction: column;
    align-items: flex-start;
  }
}