:root {
  color-scheme: light;
  --bg: #f7f7f5;
  --card-bg: #ffffff;
  --text: #222222;
  --muted: #666666;
  --accent: #2f6f4f;
  --accent-hover: #245a3f;
  --border: #dddddd;
  --error-bg: #fdecea;
  --error-text: #a33;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px;
}

main.container {
  padding-bottom: 64px;
}

.site-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  margin-bottom: 24px;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand-logo {
  height: 200px;
  width: auto;
  display: block;
}

.partner-logo {
  height: 180px;
  width: auto;
  display: block;
  margin-left: auto;
}

h1, h2, h3 {
  color: var(--text);
}

a {
  color: var(--accent);
}

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

.link-list li {
  margin-bottom: 8px;
}

.auth-columns {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  flex: 1 1 280px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

label {
  font-size: 0.85rem;
  color: var(--muted);
}

input[type="text"],
input[type="email"] {
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1rem;
}

button {
  margin-top: 8px;
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background: var(--accent-hover);
}

.link-button {
  background: none;
  color: var(--accent);
  padding: 0;
  margin: 0;
  text-decoration: underline;
}

.link-button:hover {
  background: none;
  color: var(--accent-hover);
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.collapsible {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 12px;
  padding: 0 16px;
}

.collapsible summary {
  cursor: pointer;
  padding: 14px 0;
  font-weight: 600;
  list-style: none;
}

.collapsible summary::-webkit-details-marker {
  display: none;
}

.collapsible summary::before {
  content: "\25B8";
  display: inline-block;
  margin-right: 8px;
  transition: transform 0.15s ease;
}

.collapsible[open] summary::before {
  transform: rotate(90deg);
}

.collapsible > *:not(summary) {
  margin-top: 0;
}

.collapsible .video-embed,
.collapsible .quiz-embed {
  margin-bottom: 16px;
}

.video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  max-width: 100%;
  background: #000;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.resource-list {
  padding-left: 20px;
}

.quiz-embed {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 16px;
}

.flash-list {
  margin-bottom: 16px;
}

.flash {
  padding: 10px 14px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.flash-error {
  background: var(--error-bg);
  color: var(--error-text);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #1b1b1a;
    --card-bg: #262625;
    --text: #eeeeee;
    --muted: #aaaaaa;
    --accent: #5fae86;
    --accent-hover: #7cc39d;
    --border: #3a3a38;
    --error-bg: #3a2323;
    --error-text: #ff8a8a;
  }
}