/* Protern.io / TimeLink — match protern.io site: light, clean, professional */

:root {
  --bg: #f8f9fa;
  --bg-card: #ffffff;
  --text: #1a1a1a;
  --text-muted: #5a5a5a;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --error: #dc2626;
  --success: #059669;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

.header {
  padding: 1.5rem 1.5rem 1rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.logo {
  max-width: 200px;
  height: auto;
  display: block;
  margin: 0 auto 0.75rem;
}

.title {
  margin: 0 0 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.main {
  max-width: 480px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.support-callout {
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.support-callout__link {
  display: block;
  font-size: 0.9375rem;
}

.protern-cap-entry__link {
  color: #3BB3E5;
  font-weight: 600;
  text-decoration: none;
}

.support-callout__link:hover {
  text-decoration: underline;
}

.support-callout__link::after {
  content: " \2197";
  font-size: 0.85em;
}

.support-callout__desc {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.steps-viewport {
  overflow: hidden;
  width: 100%;
  visibility: hidden;
}

.steps-viewport--ready {
  visibility: visible;
}

.steps-track {
  display: flex;
  width: 500%;
}

.steps-track.steps-track--ready {
  transition: transform 0.35s ease-in-out;
}

.step {
  flex: 0 0 20%;
  width: 20%;
  min-width: 20%;
  box-sizing: border-box;
}

.step-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.step-content h2 {
  margin: 0 0 0.75rem;
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.step-content p {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.step-content p:last-of-type {
  margin-bottom: 0;
}

.step-content.unsupported {
  border-color: var(--error);
}

.step-content.unsupported h2 {
  color: var(--error);
}

.btn {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-strong);
}

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

/* Protern.io button styles — from protern.io site */
.protern-btn {
  border-radius: 10px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s, opacity 0.2s;
}

.protern-btn--primary {
  background: #3BB3E5;
  border: 1px solid #3BB3E5;
  color: #FFFFFF;
}

.protern-btn--primary:hover {
  background: #2a9fd4;
  border-color: #2a9fd4;
}

.protern-btn--secondary {
  background: #FFFFFF;
  border: 1px solid #3BB3E5;
  color: #3BB3E5;
}

.protern-btn--secondary:hover {
  background: #f0f9fc;
  border-color: #2a9fd4;
  color: #2a9fd4;
}

.step-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.error {
  margin-top: 1rem;
  color: var(--error);
  font-size: 0.9375rem;
}

.firmware-versions {
  font-size: 0.9375rem;
  margin-bottom: 1rem;
  color: var(--text-muted);
}

.firmware-versions strong {
  color: var(--text);
}

.progress-wrap {
  height: 10px;
  background: var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin: 1.5rem 0 0.5rem;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 6px;
  transition: width 0.2s ease;
}

.progress-text {
  margin: 0 !important;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.update-log {
  margin-top: 1rem;
  padding: 0.75rem;
  font-family: ui-monospace, monospace;
  font-size: 0.8125rem;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  max-height: 8rem;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

#done-content.success #done-title {
  color: var(--success);
}

#done-content.error #done-title {
  color: var(--error);
}

.page-version {
  margin: 1.5rem 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  opacity: 0.7;
  text-align: center;
}