.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 24px;
  position: relative;
  z-index: 1;
}

.app-bar {
  background: var(--md-sys-color-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--md-sys-elevation-level1);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all var(--transition-medium) ease;
}

.app-bar:hover {
  box-shadow: var(--md-sys-elevation-level2);
}

.app-bar-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.app-icon {
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 32px;
  animation: subtle-rotate 20s linear infinite;
}

.app-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  flex: 1;
}

.app-version {
  font-size: 12px;
  font-weight: 500;
  color: var(--md-sys-color-primary);
  background: var(--md-sys-color-primary-container);
  padding: 6px 16px;
  border-radius: var(--md-sys-shape-corner-full);
  border: 1px solid var(--md-sys-color-primary);
}

.main-content {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.app-footer {
  background: var(--md-sys-color-surface);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  margin-top: 32px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding-bottom: 24px;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

.copyright {
  text-align: center;
  padding: 20px 0;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  margin-top: 32px;
}

.copyright p {
  font-size: 13px;
  color: var(--md-sys-color-on-surface-variant);
  margin: 4px 0;
  line-height: 1.5;
}

.copyright a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
  font-weight: 600;
  position: relative;
}

.copyright a::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--md-sys-color-primary);
  transition: width var(--transition-medium) ease;
}

.copyright a:hover::after {
  width: 100%;
}

@media (min-width: 768px) {
  .main-content {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 768px) {
  .main-content {
    padding: 16px;
  }

  .app-bar-content {
    padding: 12px 16px;
  }

  .app-title {
    font-size: 20px;
  }

  .app-icon {
    font-size: 28px;
  }

  .project-header {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }

  .project-version {
    align-items: center;
  }

  .project-links {
    grid-template-columns: 1fr;
  }

  .button-group {
    flex-direction: column;
  }

  .button-group .btn {
    width: 100%;
  }

  .settings-text,
  .about-text {
    display: none;
  }
}

@media (max-width: 480px) {
  .project-info-card {
    padding: 24px 16px;
  }

  .tech-info,
  .usage-notice {
    padding: 16px;
  }

  .footer-content {
    padding: 24px 16px;
  }
}

@media print {
  .app-bar,
  .theme-toggle,
  .settings-link,
  .about-link,
  .btn,
  .snackbar {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  :root {
    --md-sys-color-background: #ffffff !important;
    --md-sys-color-on-background: #000000 !important;
    --md-sys-color-surface: #ffffff !important;
    --md-sys-color-on-surface: #000000 !important;
  }
}