:root {
  --bg: #fafaf8;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-muted: #5f5f5f;
  --border: #e6e4df;
  --accent: #0d9488;
  --accent-text: #ffffff;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --surface: #1d1c17;
    --text: #f2f0ea;
    --text-muted: #a8a49a;
    --border: #322f27;
    --accent: #2dd4bf;
    --accent-text: #14130f;
  }
}

* { box-sizing: border-box; }

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

.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

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

.header-inner {
  padding: 20px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
}

.brand-icon {
  width: 26px;
  color: var(--accent);
}

.dot {
  color: var(--accent);
}

/* Hero */

.hero {
  padding: 56px 24px 32px;
  text-align: center;
}

.hero-icon {
  width: 96px;
  margin: 0 auto 24px;
  color: var(--accent);
}

.hero-wordmark {
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin: 0 0 20px;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin: 0 auto;
}

/* Folder navigation */

.folders {
  margin-bottom: 48px;
}

.folders input.tab-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.tab-row {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  flex-wrap: wrap;
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 12px 12px 0 0;
  border: 1px solid var(--border);
  border-bottom: none;
  background: var(--surface);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
  transform: translateY(4px);
  margin-bottom: -1px;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}

.tab-ghost {
  cursor: default;
  border-style: dashed;
  color: var(--text-muted);
  opacity: 0.55;
  background: transparent;
}

#tab-apps:checked ~ .tab-row label[for="tab-apps"],
#tab-study:checked ~ .tab-row label[for="tab-study"],
#tab-projects:checked ~ .tab-row label[for="tab-projects"] {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
  transform: translateY(0);
  z-index: 2;
  position: relative;
}

#tab-apps:focus-visible ~ .tab-row label[for="tab-apps"],
#tab-study:focus-visible ~ .tab-row label[for="tab-study"],
#tab-projects:focus-visible ~ .tab-row label[for="tab-projects"] {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.folder-body {
  position: relative;
  z-index: 1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0 14px 14px 14px;
  padding: 30px 24px;
}

.panel {
  display: none;
}

#tab-apps:checked ~ .folder-body .panel-apps,
#tab-study:checked ~ .folder-body .panel-study,
#tab-projects:checked ~ .folder-body .panel-projects {
  display: block;
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.panel-icon {
  width: 48px;
  height: 48px;
  flex: none;
  border-radius: 10px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1.5rem;
}

.panel-icon svg {
  width: 28px;
}

.panel-icon svg rect {
  fill: currentColor;
}

.panel h2 {
  margin: 0 0 2px;
  font-size: 1.3rem;
}

.kicker {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.lede {
  color: var(--text-muted);
  font-size: 1.02rem;
  margin: 0 0 24px;
}

.resource-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.resource-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.resource-item h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.resource-item p {
  margin: 0 0 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.resource-item--placeholder {
  opacity: 0.6;
}

.resource-item--placeholder p {
  margin-bottom: 0;
}

.feature-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  text-align: left;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-list li {
  position: relative;
  padding-left: 22px;
  color: var(--text);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.status {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0 0 24px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.cta-btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 999px;
  transition: opacity 0.15s ease;
}

.cta-btn:hover {
  opacity: 0.85;
}

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

.note {
  color: var(--text-muted);
  font-size: 0.88rem;
  max-width: 480px;
  margin: 0 auto 20px;
}

.text-link {
  color: var(--accent);
  font-size: 0.9rem;
  text-decoration: underline;
  font-weight: 600;
}

.text-link:hover {
  opacity: 0.8;
}

/* Other projects */

.other-projects {
  padding: 48px 24px 0;
  border-top: 1px solid var(--border);
}

.other-projects h2 {
  font-size: 1.5rem;
  margin: 0 0 24px;
  text-align: center;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.project-card:last-child {
  margin-bottom: 0;
}

.project-card-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.project-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.wip-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 10px;
}

.project-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* Support */

.support {
  padding: 48px 24px 64px;
  text-align: center;
  border-top: 1px solid var(--border);
}

.support h2 {
  font-size: 1.5rem;
  margin: 0 0 24px;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px;
  text-align: center;
}

.made-with {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0 0 6px;
}

.site-footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0;
}