:root {
  --bg: #faf4ec;
  --card: #ffffff;
  --border: #ede2d4;
  --ink: #3d3229;
  --muted: #8c7f70;
  --accent: #d9704c;
  --accent-soft: #fff8f1;
  --accent-line: #f3e2d3;
  --success: #2e9e54;
  --success-soft: #eef7f0;
  --track: #f3e9dc;
  --radius: 20px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px 48px;
}

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

.site-header {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 16px 20px;
}

.site-header h1 {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 0 0 6px;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.title-icon {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  margin-top: 2px;
  color: var(--accent);
}

.title-words {
  position: relative;
  display: inline-block;
  padding-bottom: 8px;
}

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

.title-underline {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 8px;
  color: var(--accent);
  opacity: 0.45;
}

.tagline {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 14px;
}

.privacy-note {
  margin: 0;
  display: inline-block;
  background: var(--success-soft);
  color: #256b3d;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 999px;
}

/* ---------- Cards ---------- */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px;
  margin-bottom: 18px;
}

.card h2 {
  margin: 0 0 14px;
  font-size: 17px;
}

.section-heading {
  margin: 26px 0 10px;
  font-size: 17px;
}

.section-note {
  margin: -4px 0 12px;
  color: var(--muted);
  font-size: 13px;
}

/* ---------- Form ---------- */

.field {
  margin-bottom: 16px;
}

label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
}

.optional {
  font-weight: 400;
  color: var(--muted);
}

input,
select,
textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  background: #fffdfa;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
}

textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.5;
}

input:focus,
select:focus,
textarea:focus,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

input.invalid,
textarea.invalid {
  border-color: var(--accent);
  background: #fff7f4;
}

.hint {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.error {
  margin: 6px 0 0;
  color: #b8442a;
  font-size: 13px;
  min-height: 0;
}

.error:empty {
  display: none;
}

/* ---------- Buttons ---------- */

.primary-btn {
  width: 100%;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  padding: 13px 18px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.primary-btn:hover {
  background: #c45f3d;
}

.ghost-btn {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: inherit;
  font-size: 14px;
  padding: 11px 18px;
  cursor: pointer;
}

.ghost-btn:hover {
  color: var(--ink);
  border-color: var(--muted);
}

.result-actions {
  display: grid;
  gap: 10px;
  margin: 18px 0 12px;
}

/* ---------- Score ---------- */

.score-card {
  text-align: center;
}

.score-label {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.score-number {
  margin: 2px 0 0;
  line-height: 1;
}

.score-number b {
  font-size: 54px;
  color: var(--accent);
  letter-spacing: -0.03em;
}

.score-number i {
  font-style: normal;
  font-size: 17px;
  color: var(--muted);
  margin-left: 2px;
}

.score-band {
  margin: 8px 0 0;
  font-weight: 600;
  font-size: 15px;
}

.score-bar {
  height: 10px;
  background: var(--track);
  border-radius: 999px;
  margin-top: 14px;
  overflow: hidden;
}

.score-bar i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.score-delta {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.score-delta b {
  color: var(--success);
}

.score-delta.down b {
  color: var(--accent);
}

/* ---------- Check list ---------- */

.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.check-list li {
  display: flex;
  gap: 11px;
  padding: 12px 0;
  border-bottom: 1px solid var(--track);
}

.check-list li:first-child {
  padding-top: 0;
}

.check-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.check-dot {
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}

.check-dot.pass {
  background: var(--success);
}

.check-dot.gap {
  background: var(--accent);
}

.check-title {
  font-weight: 600;
  font-size: 14.5px;
}

.check-note {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}

/* ---------- Channels ---------- */

.channel-list {
  display: grid;
  gap: 10px;
}

.channel {
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 16px;
  padding: 14px 15px;
}

.channel-rank {
  display: inline-block;
  background: var(--success);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 11px;
  border-radius: 999px;
  margin-bottom: 7px;
}

.channel-rank.plain {
  background: transparent;
  color: var(--muted);
  padding: 0;
  font-weight: 600;
}

.channel-name {
  margin: 0;
  font-weight: 600;
  font-size: 15px;
}

.channel-why {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.channel-step {
  margin: 8px 0 0;
  font-size: 13px;
  background: #fff;
  border-radius: 10px;
  padding: 8px 10px;
}

.channel-step b {
  color: var(--accent);
}

/* ---------- Saved list ---------- */

.saved-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.saved-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--track);
}

.saved-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.saved-main {
  flex: 1;
  min-width: 0;
}

.saved-name {
  font-weight: 600;
  font-size: 14.5px;
  overflow-wrap: anywhere;
}

.saved-meta {
  display: block;
  color: var(--muted);
  font-size: 12.5px;
}

.saved-score {
  font-weight: 700;
  font-size: 19px;
  color: var(--accent);
}

.icon-btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  font-family: inherit;
  font-size: 12.5px;
  padding: 5px 12px;
  cursor: pointer;
}

.icon-btn:hover {
  color: var(--ink);
  border-color: var(--muted);
}

/* ---------- Empty state ---------- */

.empty-state {
  text-align: center;
  padding: 8px 0 4px;
  color: var(--muted);
}

.empty-art {
  width: 84px;
  height: 58px;
  color: var(--accent);
  opacity: 0.65;
}

.empty-state p {
  margin: 6px auto 0;
  max-width: 34ch;
  font-size: 13.5px;
}

/* ---------- How to use ---------- */

.how-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.how-steps li {
  display: flex;
  gap: 11px;
  font-size: 14px;
}

.step-num {
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.how-note,
.disclaimer {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 12.5px;
}

.disclaimer {
  text-align: center;
  margin-bottom: 8px;
}

/* ---------- Wider screens ---------- */

@media (min-width: 560px) {
  .card {
    padding: 24px 22px;
  }

  .site-header h1 {
    font-size: 30px;
  }

  .title-icon {
    width: 34px;
    height: 34px;
    flex-basis: 34px;
  }

  .result-actions {
    grid-template-columns: 1fr 1fr;
  }

  .channel-list {
    gap: 12px;
  }
}