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

html, body { user-select: none; -webkit-user-select: none; }

:root {
  --bg: #f7f7f8;
  --surface: #ffffff;
  --border: #e8e8ec;
  --text: #0f0f10;
  --text-secondary: #6b6b7b;
  --text-tertiary: #a0a0b0;
  --accent: #2B79EE;
  --accent-hover: #1a6adf;
  --green: #16a34a;
  --green-bg: #f0fdf4;
  --green-border: #bbf7d0;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --radius: 20px;
  --radius-sm: 10px;
  --btn-bg: var(--bg);
  --btn-border: var(--border);
  --btn-hover-bg: #ededf0;
  --btn-hover-border: #d0d0da;
}

/* dark theme */
@media (prefers-color-scheme: dark) {

  :root {
    --bg: #0b0b0c;
    --surface: #111113;
    --border: #222226;

    --text: #f2f2f3;
    --text-secondary: #a1a1b0;
    --text-tertiary: #6f6f7a;

    --green-bg: #052e16;
    --green-border: #14532d;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.3);
    --btn-bg: #151518;
    --btn-border: #2a2a30;
    --btn-hover-bg: #1a1a1f;
    --btn-hover-border: #34343a;
  }

  body::before {
    opacity: 0.15;
  }

  .btn:hover {
    background: #1a1a1f;
    border-color: #2a2a30;
  }

}

html, body { height: 100%; }

body {
    font-family: 'Geist', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--btn-bg);
    border: 1px solid var(--btn-border);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 24px;
    -webkit-font-smoothing: antialiased;
  }

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
      linear-gradient(var(--border) 1px, transparent 1px),
      linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
  }

  .main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    padding: 24px 0;
  }

  .wrapper {
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    animation: fadeUp 0.5s ease both;
  }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 28px 28px 28px;
    display: flex;
    flex-direction: column;
    gap: 24px;
  }

  /* Header row: logo+name left, version right */
  .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .card-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .logo-box {
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: 9px;
    display: grid;
    place-items: center;
    flex-shrink: 0;
  }

  .logo-box img {
    width: 18px;
    height: 18px;
    filter: brightness(0) invert(1);
  }

  .header-title {
    display: flex;
    flex-direction: column;
    gap: 1px;
  }

  .header-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.02em;
    line-height: 1.25;
  }

  .header-badge {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-tertiary);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    line-height: 1;
  }

  .version-chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 4px 10px 4px 7px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
  }

  .version-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    flex-shrink: 0;
  }

  /* Title */
  .card-title {
    font-size: 36px;
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1;
    color: var(--text);
  }

  .card-title span {
    color: var(--text-tertiary);
    font-weight: 400;
  }

  /* Status */
  .status-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--green-bg);
    border: 1px solid var(--green-border);
    border-radius: var(--radius-sm);
  }

  .status-indicator {
    width: 8px;
    height: 8px;
    background: var(--green);
    border-radius: 50%;
    flex-shrink: 0;
    position: relative;
  }

  .status-indicator::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: var(--green);
    opacity: 0.2;
    animation: pulse 2s ease infinite;
  }

  @keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.2; }
    50%       { transform: scale(1.6); opacity: 0; }
  }

  .status-text {
    font-size: 13px;
    font-weight: 500;
    color: var(--green);
  }

  .status-detail {
    font-size: 12px;
    color: var(--green);
    margin-left: auto;
    opacity: 0.7;
  }

  /* Actions */
  .actions {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
  }

  .btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.12s ease, border-color 0.12s ease;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
  }

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

  .btn svg {
    width: 14px;
    height: 14px;
    opacity: 0.6;
    fill: currentColor;
    flex-shrink: 0;
  }

  .btn-primary {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
    grid-column: span 3;
    font-size: 15px;
    padding: 12px 14px;
  }

  .btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
  }

  .divider {
    height: 1px;
    background: var(--border);
  }

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

  .meta-label {
    font-size: 11px;
    color: var(--text-tertiary);
    letter-spacing: 0.02em;
  }

  .meta-value {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
  }

  /* Page footer */
  .footer {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 16px 4px 0;
    font-size: 11px;
    color: var(--text-tertiary);
  }

  .footer-links {
    display: flex;
    gap: 16px;
  }

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

  .footer a:hover {
    color: var(--text-secondary);
  }