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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  background-color: #f3f4f6;
  color: #111827;
}

:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: #111827;
  color: #f9fafb;
  z-index: 1000;
  text-decoration: none;
}

.skip-link:focus-visible {
  top: 1rem;
}

.site-header {
  background: #111827;
  color: #f9fafb;
  padding: 1.5rem 1.25rem;
}

.site-header-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.site-header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
}

.tagline {
  margin: 0;
  max-width: 60ch;
  color: #e5e7eb;
}

.layout {
  max-width: 1120px;
  margin: 1.5rem auto;
  padding: 0 1.25rem 2rem;
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(0, 2.6fr);
  gap: 2rem;
  align-items: flex-start;
}

.content-column {
  min-width: 0;
}

.content-column h2 {
  margin-top: 1.75rem;
}

.sign-sidecar {
  position: sticky;
  top: 1.25rem;
  align-self: flex-start;
  max-height: calc(100vh - 2.5rem);
}

.avatar-container {
  border-radius: 0.75rem;
  padding: 0.75rem 0.75rem 0.9rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.35);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.avatar-container.high-contrast {
  background: #000000;
  color: #f9fafb;
}

.avatar-heading {
  font-size: 1rem;
  margin: 0;
}

.avatar-status {
  margin: 0.35rem 0 0.5rem;
  font-size: 0.85rem;
  color: #e5e7eb;
}

.debug-panel {
  margin-top: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: 0.5rem;
  background: rgba(15, 23, 42, 0.85);
  color: #e5e7eb;
  font-size: 0.8rem;
}

.debug-panel > summary {
  cursor: pointer;
  font-weight: 600;
  outline: none;
}

.debug-log {
  margin-top: 0.35rem;
  max-height: 160px;
  overflow: auto;
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.signer-canvas {
  display: block;
  width: 100%;
  height: 260px;
  background: radial-gradient(circle at 30% 20%, #1f2937 0, #020617 55%, #000000 100%);
  border-radius: 0.5rem;
}

.avatar-controls {
  display: flex;
  justify-content: flex-start;
}

.avatar-controls button {
  border: none;
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font-size: 0.9rem;
  cursor: pointer;
  background: #f97316;
  color: #111827;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(248, 113, 113, 0.4);
}

.avatar-controls button:hover {
  background: #fb923c;
}

.avatar-controls button:active {
  transform: translateY(1px);
}

.sign-trigger {
  cursor: pointer;
  padding: 0.05em 0.25em;
  border-radius: 0.25em;
  background: rgba(59, 130, 246, 0.08);
  border-bottom: 2px solid rgba(59, 130, 246, 0.35);
}

.sign-trigger.is-active {
  background: #fffbeb;
  border-color: #f59e0b;
  box-shadow: 0 0 0 1px rgba(245, 158, 11, 0.7);
}

.sign-paragraph.is-in-view {
  outline: 2px solid #a855f7;
  outline-offset: 4px;
}

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

.site-footer {
  border-top: 1px solid #d1d5db;
  padding: 1.25rem 1.25rem 2rem;
  font-size: 0.9rem;
  color: #4b5563;
  background: #f9fafb;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  background: #ffffff;
}

th,
td {
  border: 1px solid #d1d5db;
  padding: 0.5rem 0.75rem;
  text-align: left;
}

th {
  background: #e5e7eb;
}

/* Visual feedback for currently signed section */
.sign-paragraph.is-signing {
  background: linear-gradient(90deg, #dbeafe 0%, transparent 100%);
  border-left: 4px solid #2563eb;
  padding-left: 1rem;
  margin-left: -1rem;
  transition: all 0.3s ease;
}

.sign-paragraph.is-in-view {
  border-left: 2px solid #93c5fd;
  padding-left: 1rem;
  margin-left: -1rem;
  transition: all 0.3s ease;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .signer-canvas {
    height: 230px;
  }
}

@media (max-width: 768px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sign-sidecar {
    position: sticky;
    top: 0;
    z-index: 20;
    max-height: none;
  }

  .avatar-container {
    border-radius: 0 0 0.75rem 0.75rem;
  }

  .signer-canvas {
    height: 210px;
  }
}

@media (max-width: 520px) {
  .layout {
    display: block;
  }

  .sign-sidecar {
    position: fixed;
    inset: auto 0.75rem 0.75rem auto;
    width: 48vw;
    max-width: 220px;
    z-index: 30;
  }

  .avatar-container {
    border-radius: 0.75rem;
    padding: 0.5rem;
  }

  .avatar-heading {
    font-size: 0.9rem;
  }

  .signer-canvas {
    height: 160px;
  }

  .content-column {
    padding-bottom: 8rem;
  }
}