:root {
  color-scheme: dark;
  --bg: #14161a;
  --page-bg: #0b0c0e;
  --card: #1e2126;
  --card-done: #171a1d;
  --accent: #ffcb05;
  --accent-dim: #8a7527;
  --text: #eceef0;
  --text-dim: #9aa0a6;
  --danger-bg: #3a2a12;
  --danger-border: #6b4d1a;
  --gutter: 24px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page-bg);
}

body {
  margin: 0 auto;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 640px;
}

@media (min-width: 700px) {
  body {
    min-height: calc(100vh - 64px);
    margin: 32px auto;
    border-radius: 16px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  }

  body.home {
    max-width: 900px;
  }
}

@media (max-width: 420px) {
  :root {
    --gutter: 16px;
  }
}

header {
  padding: 20px var(--gutter) 8px;
}

h1 {
  margin: 0;
  font-size: 1.4rem;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.disclaimer {
  margin: 12px var(--gutter) 0;
  padding: 10px 14px;
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.4;
  color: #f0d9a8;
}

.method-select {
  display: block;
  margin: 14px var(--gutter) 0;
  width: calc(100% - var(--gutter) * 2);
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid #3a3d43;
  background: #22252a;
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 44px;
}

.method-select:hover,
.method-select:focus {
  border-color: var(--accent-dim);
  outline: none;
}

.method-summary {
  margin: 8px var(--gutter) 0;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.4;
}

.method-warning {
  margin: 10px var(--gutter) 0;
  padding: 10px 14px;
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.4;
  color: #f0d9a8;
}

.progress-wrap {
  margin: 14px var(--gutter) 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.progress-bar {
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: #2a2d33;
  overflow: hidden;
}

#progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.2s ease;
}

#progress-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  white-space: nowrap;
}

main {
  flex: 1;
  padding: 12px var(--gutter) var(--gutter);
}

#step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid #2a2d33;
  cursor: pointer;
  transition: background 0.15s ease, opacity 0.15s ease;
}

.step:hover {
  border-color: var(--accent-dim);
}

.step.done {
  background: var(--card-done);
  opacity: 0.55;
}

.step input[type="checkbox"] {
  margin-top: 3px;
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.step-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.step-index {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--accent);
}

.step.done .step-index {
  color: var(--text-dim);
}

.step-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.step-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.35;
}

.step.done .step-title,
.step.done .step-desc {
  text-decoration: line-through;
}

.step-action {
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.step-launch-btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 6px;
  border: 1px solid var(--accent-dim);
  background: #2a2510;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  min-height: 36px;
  box-sizing: border-box;
}

.step-launch-btn:hover {
  border-color: var(--accent);
}

.step-launch-btn:disabled {
  opacity: 0.6;
  cursor: default;
}

.step-launch-status {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.step-launch-status.error {
  color: #e28a8a;
}

.install-card {
  background: #22252a;
  border: 1px solid #2f333a;
  border-radius: 8px;
  padding: 10px 14px;
  margin-top: 8px;
}

.install-card summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent);
}

.install-steps {
  margin: 10px 0 2px;
  padding-left: 20px;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.5;
}

.install-steps li {
  margin-bottom: 6px;
}

.feedback {
  margin: 4px var(--gutter) 0;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid #262a30;
  border-radius: 8px;
}

.feedback-heading {
  font-size: 0.9rem;
  margin: 0 0 10px;
  color: var(--text);
}

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

.feedback-btn {
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid #3a3d43;
  background: #22252a;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  min-height: 40px;
}

.feedback-btn:hover:not(:disabled) {
  border-color: var(--accent-dim);
}

.feedback-btn:disabled {
  cursor: default;
  opacity: 0.6;
}

.feedback-btn.selected {
  opacity: 1;
  border-color: var(--accent);
  color: var(--accent);
  background: #2a2510;
}

.feedback-counts {
  display: block;
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--text-dim);
}

footer {
  padding: 14px var(--gutter) 20px;
  border-top: 1px solid #24272c;
}

#reset-btn {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid #3a3d43;
  background: #22252a;
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
  min-height: 44px;
}

#reset-btn:hover {
  border-color: var(--accent-dim);
}

.back-home {
  display: inline-block;
  margin-bottom: 6px;
  color: var(--text-dim);
  font-size: 0.82rem;
  text-decoration: none;
}

.back-home:hover {
  color: var(--accent);
}

.home-card {
  display: block;
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid #3a3d43;
  background: var(--card);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.home-card:hover {
  border-color: var(--accent);
  background: #24272c;
}

.home-card h2,
.home-card h3,
.home-card h4 {
  margin: 0 0 6px;
  font-size: 1.05rem;
  color: var(--accent);
}

.home-card-method h4 {
  font-size: 0.98rem;
}

.home-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.4;
}

.home-card-stats {
  display: block;
  margin-top: 10px;
  color: var(--accent-dim);
  font-size: 0.78rem;
}

.hero-stats {
  margin: 10px 0 0;
  color: var(--accent-dim);
  font-size: 0.85rem;
}

.home-group + .home-group {
  margin-top: 20px;
}

.home-group-title {
  margin: 0 0 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.home-methods-row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.home-footnote {
  margin: 10px 0 0;
  color: var(--text-dim);
  font-size: 0.8rem;
  line-height: 1.4;
}

.hero {
  padding: 24px var(--gutter) 8px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 1.6rem;
  line-height: 1.25;
}

.hero .subtitle {
  font-size: 0.92rem;
  line-height: 1.5;
}

.home-section {
  margin: 22px var(--gutter) 0;
  padding-top: 18px;
  border-top: 1px solid #24272c;
}

.home-section h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.how-it-works {
  margin: 0;
  padding-left: 20px;
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.5;
}

.how-it-works li + li {
  margin-top: 10px;
}

footer .home-footnote {
  padding: 0 0 4px;
}

@media (min-width: 700px) {
  .hero {
    padding: 44px var(--gutter) 20px;
  }

  .eyebrow {
    font-size: 0.8rem;
  }

  .hero h1 {
    font-size: 2.2rem;
    max-width: 720px;
  }

  .hero .subtitle {
    font-size: 1rem;
    max-width: 640px;
  }

  .home-section {
    margin-top: 32px;
    padding-top: 24px;
  }

  .home-section h2 {
    font-size: 1.3rem;
  }

  .how-it-works {
    font-size: 0.94rem;
    max-width: 680px;
  }

  .home-methods-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
  }

  .home-card {
    padding: 20px 20px 22px;
  }

  .home-card:hover {
    transform: translateY(-2px);
  }

  .home-card h2,
  .home-card h3 {
    font-size: 1.12rem;
  }
}