:root {
  --color-a: #f9b122;
  --color-b: #e94e1b;
  --color-c: #f39200;
  --color-d: #2b1f5a;
  --color-e: #3d9286;
  --color-f: #0c777a;

  --ink: #1c1c1c;
  --ink-soft: #55585f;
  --bg: #f4f4f5;
  --card-bg: #ffffff;
  --border: #e3e3e6;

  --radius: 14px;
  --shadow: 0 2px 6px rgba(20, 20, 30, 0.06), 0 10px 24px rgba(20, 20, 30, 0.05);
  --font: 'Ruda', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3 {
  font-weight: 800;
  margin: 0;
}

/* ---------- Brand accent bar ---------- */

.brand-bar {
  display: flex;
  height: 6px;
  width: 100%;
}
.brand-bar span {
  flex: 1;
}

/* ---------- Header ---------- */

.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 28px;
  padding-bottom: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  flex-shrink: 0;
}

.brand-word {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-sub {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.brand-main {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--color-d);
}

.header-title {
  text-align: right;
}

.header-title h1 {
  font-size: 1.9rem;
  color: var(--ink);
}

.header-title p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

@media (max-width: 640px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .header-title { text-align: left; }
}

/* ---------- Progress note ---------- */

.progress-note {
  margin: 32px 0 0;
  padding: 12px 18px;
  background: #fff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--color-e);
  border-radius: 8px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.progress-note strong {
  color: var(--ink);
}

/* ---------- Toolbar ---------- */

.toolbar {
  display: flex;
  margin: 24px 0 24px;
}

.search input {
  font-family: var(--font);
  font-size: 1rem;
  padding: 10px 16px;
  border: 1px solid var(--border);
  border-radius: 999px;
  min-width: 240px;
  width: 100%;
  max-width: 360px;
  background: #fff;
  color: var(--ink);
}

.search input:focus {
  outline: none;
  border-color: var(--color-f);
  box-shadow: 0 0 0 3px rgba(12, 119, 122, 0.15);
}

/* ---------- Course grid ---------- */

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 48px;
}

.course-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  position: relative;
  overflow: hidden;
}

.course-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-e);
}

.course-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 10px rgba(20, 20, 30, 0.08), 0 16px 32px rgba(20, 20, 30, 0.08);
}

.course-card.is-locked::before {
  background: #cfcfd4;
}

.course-card.is-locked {
  background: #fafafb;
}

.course-card.is-locked:hover {
  transform: none;
  box-shadow: var(--shadow);
}

.course-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.module-index {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.status-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  background: #f1f1f3;
  color: var(--ink-soft);
  white-space: nowrap;
}

.status-badge[data-status="not-started"] {
  background: #f1f1f3;
  color: var(--ink-soft);
}

.status-badge[data-status="in-progress"] {
  background: #fdf0d9;
  color: #9a6400;
}

.status-badge[data-status="completed"] {
  background: #dcefe9;
  color: var(--color-f);
}

.status-badge[data-status="locked"] {
  background: #ececee;
  color: #9a9ba1;
}

.course-title {
  font-size: 1.15rem;
  color: var(--ink);
}

.course-desc {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
  flex-grow: 1;
}

.lock-note {
  margin: 0;
  font-size: 0.85rem;
  color: #9a6400;
  background: #fdf6e8;
  border-radius: 8px;
  padding: 8px 10px;
}

.course-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  margin-top: 6px;
}

.course-link {
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--color-f);
}

.course-link:hover {
  text-decoration: underline;
}

.course-card.is-locked .course-link {
  color: #9a9ba1;
  pointer-events: none;
  cursor: not-allowed;
}

.complete-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  cursor: pointer;
}

.complete-toggle input {
  width: 16px;
  height: 16px;
  accent-color: var(--color-f);
  cursor: pointer;
}

.complete-toggle input:disabled {
  cursor: not-allowed;
}

.complete-toggle:has(input:disabled) {
  color: #b6b7bc;
  cursor: not-allowed;
}

.empty-state {
  text-align: center;
  color: var(--ink-soft);
  margin: -20px 0 48px;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.footer-inner p {
  margin: 0;
  flex-grow: 1;
}

.reset-progress {
  font-family: var(--font);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-soft);
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
}

.reset-progress:hover {
  border-color: var(--color-f);
  color: var(--color-f);
}