:root {
  --void: #0a0a0d;
  --panel: #131318;
  --panel-border: #24242c;
  --steel: #8b8d98;
  --violet: #7c5cff;
  --violet-dim: #4a3a99;
  --text: #e8e8ec;
  --text-dim: #9a9aa5;
  --done: #3ddc84;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--void);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  padding: 0 0 4rem;
}

header {
  padding: 3rem 2rem 2rem;
  max-width: 900px;
  margin: 0 auto;
  border-bottom: 1px solid var(--panel-border);
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.9rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--text);
}

.subtitle {
  margin: 0 0 1.5rem;
  color: var(--text-dim);
  font-size: 1rem;
}

.progress-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.progress-bar-track {
  flex: 1;
  height: 10px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--violet-dim), var(--violet));
  transition: width 0.3s ease;
}

#progress-text {
  white-space: nowrap;
  color: var(--steel);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 2rem 0;
}

.phase {
  margin-bottom: 2.5rem;
}

.phase h2 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--violet);
  margin: 0 0 0.25rem;
  border-left: 3px solid var(--violet);
  padding-left: 0.75rem;
}

.phase-meta {
  margin: 0 0 1rem 0.9rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.item-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.item-card {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  padding: 1rem 1.1rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.item-card:hover {
  border-color: var(--violet-dim);
}

.item-card.is-done {
  border-color: var(--done);
  background: #101512;
}

.item-card.is-done .item-action {
  color: var(--text-dim);
  text-decoration: line-through;
  text-decoration-color: var(--done);
}

.item-card input[type="checkbox"] {
  margin-top: 0.2rem;
  width: 18px;
  height: 18px;
  accent-color: var(--violet);
  flex-shrink: 0;
}

.item-body {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.item-action {
  font-weight: 600;
  color: var(--text);
}

.item-why {
  font-size: 0.88rem;
  color: var(--text-dim);
}

.why-label {
  color: var(--steel);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.03em;
}

.login-gate {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: var(--void);
}

.login-gate[hidden] {
  display: none;
}

.login-box {
  width: 100%;
  max-width: 360px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.login-box h2 {
  margin: 0;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--violet);
}

.login-box p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.login-box input {
  background: var(--void);
  border: 1px solid var(--panel-border);
  color: var(--text);
  padding: 0.7rem 0.8rem;
  font-size: 1rem;
  font-family: inherit;
}

.login-box input:focus {
  outline: none;
  border-color: var(--violet);
}

.login-box button {
  background: linear-gradient(90deg, var(--violet-dim), var(--violet));
  border: none;
  color: #fff;
  padding: 0.7rem 0.8rem;
  font-size: 0.95rem;
  font-family: inherit;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.login-error {
  color: #ff6b6b;
  font-size: 0.85rem;
}

body.locked {
  overflow: hidden;
}

body.locked header,
body.locked main,
body.locked footer {
  display: none;
}

footer {
  max-width: 900px;
  margin: 2rem auto 0;
  padding: 1.5rem 2rem 0;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--panel-border);
}