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

:root {
  --adobe-red: #EB1000;
  --adobe-red-hover: #D40000;
  --adobe-red-active: #B80000;
  --adobe-blue: #1473E6;
  --text-primary: #2C2C2C;
  --text-secondary: #505050;
  --text-muted: #6E6E6E;
  --border: #E1E1E1;
  --border-light: #EBEBEB;
  --bg-page: #F5F5F5;
  --bg-white: #FFFFFF;
  --bg-panel: #FAFAFA;
  --shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

body {
  font-family: 'Inter', adobe-clean, 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #3a3a3a;
  min-height: 100vh;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

.pdf-bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: #d8d8d8;
  visibility: hidden;
}

.pdf-bg-layer.is-active {
  visibility: visible;
}

.pdf-bg-canvas {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  filter: blur(3px) saturate(0.98) brightness(0.98);
  pointer-events: none;
}

.viewer-shell {
  position: relative;
  z-index: 2;
  width: min(100%, 900px);
  max-width: 900px;
  margin-inline: auto;
  flex-shrink: 0;
}

.viewer-container {
  width: 100%;
  max-width: 900px;
  margin-inline: auto;
  background: var(--bg-white);
  border-radius: 8px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.22);
  overflow: hidden;
  border: 1px solid var(--border);
}

.viewer-header {
  background: var(--bg-white);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.logo-mark {
  width: 132px;
  height: 32px;
  display: flex;
  align-items: center;
}

.logo-mark svg { width: 100%; height: 100%; }

.reload-btn {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--bg-white);
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.15s, border-color 0.15s;
}

.reload-btn:hover {
  background: var(--bg-panel);
  border-color: #CACACA;
}

.reload-btn.is-visible { display: flex; }

.reload-btn:focus-visible {
  outline: 2px solid var(--adobe-blue);
  outline-offset: 2px;
}

.reload-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.viewer-content {
  position: relative;
  background: var(--bg-white);
  min-height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 40px;
}

.viewer-content > * {
  position: relative;
  z-index: 1;
}

.panel { display: none; text-align: center; max-width: 560px; width: 100%; }
.panel.is-active { display: block; }

.doc-icon, .error-icon, .mobile-icon {
  width: 96px;
  height: 96px;
  margin: 0 auto 28px;
}

.doc-icon svg, .error-icon svg, .mobile-icon svg {
  width: 100%;
  height: 100%;
}

.panel-title.veil-line {
  white-space: nowrap;
}

.panel-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.3px;
  line-height: 1.35;
  word-break: normal;
  overflow-wrap: normal;
}

.panel-desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.6;
}

.user-name { color: var(--adobe-red); font-weight: 600; }

.progress-wrap { margin-bottom: 20px; }

.progress-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.progress-track {
  height: 4px;
  background: var(--border-light);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0;
  background: var(--adobe-red);
  border-radius: 999px;
  transition: width 0.05s linear;
}

.hold-btn {
  display: block;
  width: 100%;
  padding: 14px 20px;
  background: var(--adobe-red);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  transition: background 0.15s;
}

.hold-btn:hover { background: var(--adobe-red-hover); }
.hold-btn.is-holding { background: var(--adobe-red-active); }
.hold-btn.is-disabled { opacity: 0.65; cursor: default; pointer-events: none; }

.error-message {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.65;
}

.info-box {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
  margin-bottom: 20px;
  text-align: left;
}

.download-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--adobe-red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.download-status-text {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
}

.checkmark { display: none; font-size: 18px; }
.checkmark.is-visible { display: inline; }

.manual-download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: var(--adobe-red);
  color: #fff;
  border: none;
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}

.manual-download-btn:hover { background: var(--adobe-red-hover); }

.instructions {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--adobe-red);
  border-radius: 4px;
  padding: 18px 20px;
  margin-top: 20px;
  text-align: left;
}

.instructions-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.instructions-list {
  list-style: none;
  padding: 0;
}

.instructions-list li {
  color: var(--text-muted);
  font-size: 13px;
  padding: 6px 0 6px 22px;
  position: relative;
  line-height: 1.5;
}

.instructions-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--adobe-red);
  font-weight: 700;
}

.reload-hint {
  background: #FFF5F5;
  border: 1px solid #FFD6D6;
  border-radius: 4px;
  padding: 16px;
  margin-top: 16px;
  text-align: center;
}

.reload-hint-title {
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.reload-hint-sub {
  color: var(--text-muted);
  font-size: 13px;
}

.mobile-info-box {
  display: flex;
  align-items: center;
  gap: 16px;
  text-align: left;
}

.mobile-info-icon { font-size: 40px; flex-shrink: 0; }

.mobile-info-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.mobile-info-text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.55;
}

.device-list { margin-top: 20px; text-align: left; }

.device-list-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.device-items { display: flex; gap: 12px; flex-wrap: wrap; }

.device-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  padding: 10px 16px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 130px;
}

.device-name {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
}

.ghost {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

@media (max-width: 768px) {
  body { padding: 0; }
  .viewer-container { border-radius: 0; border-left: none; border-right: none; }
  .viewer-content { padding: 32px 20px; min-height: 480px; }
  .panel-title { font-size: 20px; }
  .mobile-info-box { flex-direction: column; text-align: center; }
  .device-items { flex-direction: column; }
}