:root {
  color-scheme: light;
  --bg: #f4fbfd;
  --card: #ffffff;
  --text: #57585a;
  --muted: #6f7a7c;
  --primary: #17687b;
  --accent: #149ab8;
  --highlight: #fdd505;
  --alert: #fb074d;
  --border: #d7e6ea;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.hero {
  display: grid;
  gap: 24px;
  margin-bottom: 32px;
}

.hero-copy {
  display: grid;
  gap: 16px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

h1 {
  font-size: clamp(2rem, 3vw, 2.7rem);
  margin-bottom: 12px;
  color: #234a52;
}

.lead {
  color: var(--muted);
  line-height: 1.6;
}

.page-notices {
  border-left: 4px solid var(--highlight);
  background: #fff7cc;
  padding: 12px 16px;
  border-radius: 12px;
  display: grid;
  gap: 8px;
  color: #3f3a1c;
}

.page-notices-title {
  font-weight: 700;
  color: #3f3a1c;
}

.page-notices ul {
  margin-left: 18px;
  display: grid;
  gap: 6px;
}

.page-selector {
  margin-top: 20px;
  display: grid;
  gap: 8px;
}

.page-selector-label {
  font-weight: 600;
  color: var(--primary);
}

.page-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-button {
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--primary);
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.page-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(23, 104, 123, 0.1);
  border-color: var(--accent);
}

.page-button.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.logo-panel {
  background: var(--card);
  border-radius: 20px;
  padding: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 24px rgba(23, 104, 123, 0.1);
  display: grid;
  gap: 12px;
  align-content: start;
}

.logo-preview {
  background: #f7fbfc;
  border-radius: 16px;
  border: 1px dashed var(--border);
  min-height: 140px;
  display: grid;
  place-items: center;
  padding: 16px;
  text-align: center;
}

.logo-preview img {
  max-width: 100%;
  max-height: 140px;
  object-fit: contain;
}

.logo-placeholder {
  color: var(--muted);
  font-weight: 600;
}

.logo-upload {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}

.logo-upload input {
  display: none;
}

.return-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--primary);
  font-weight: 600;
  background: #ffffff;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  align-items: start;
}

.content {
  min-width: 0;
}

.summary-card {
  background: linear-gradient(135deg, #ffffff 0%, #e6f5f9 100%);
  border-radius: 20px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: 0 12px 30px rgba(23, 104, 123, 0.12);
  position: sticky;
  top: 24px;
  align-self: start;
}

.summary-label {
  font-size: 0.9rem;
  color: var(--muted);
}

.summary-value {
  font-size: 3rem;
  font-weight: 700;
  margin: 8px 0;
  color: var(--primary);
}

.summary-meta {
  color: var(--muted);
  margin-bottom: 16px;
}

.progress {
  height: 8px;
  background: #d7edf3;
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.25s ease;
}

.status {
  margin-bottom: 24px;
}

.status-message {
  background: var(--card);
  border-radius: 12px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.status-message strong {
  color: var(--text);
}

.grid {
  display: grid;
  gap: 24px;
}

.card {
  background: var(--card);
  border-radius: 20px;
  border: 1px solid var(--border);
  padding: 24px;
  box-shadow: 0 8px 20px rgba(23, 104, 123, 0.08);
}

.card-header {
  margin-bottom: 16px;
}

.card-header h2 {
  font-size: 1.4rem;
  margin-bottom: 6px;
  color: var(--primary);
}

.card-header p {
  color: var(--muted);
}

.course-list {
  display: grid;
  gap: 16px;
}

.course-item {
  display: grid;
  grid-template-columns: 1fr minmax(140px, 200px);
  gap: 16px;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #f7fbfc;
  align-items: center;
}

.course-item.disabled {
  opacity: 0.5;
  background: #edf4f6;
}

.course-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.course-description {
  font-size: 0.9rem;
  color: var(--muted);
}

select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: 1rem;
  background: #ffffff;
  color: var(--text);
}

select:focus {
  outline: 2px solid rgba(20, 154, 184, 0.3);
  border-color: var(--accent);
}

.helper {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 6px;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--alert);
  color: #fff;
  padding: 12px 16px;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(251, 7, 77, 0.25);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  max-width: 320px;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0);
}

.site-footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-credit {
  font-size: 0.8rem;
}

@media (max-width: 720px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .summary-card {
    position: static;
    order: -1;
  }

  .course-item {
    grid-template-columns: 1fr;
  }

  .page-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .page-button {
    text-align: left;
  }
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(260px, 0.6fr);
    align-items: start;
  }
}

@media (max-width: 1024px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .summary-card {
    position: static;
    order: -1;
  }
}