:root {
  color-scheme: light dark;
  --bg: #f4f1ea;
  --card-bg: #ffffff;
  --ink: #2a2118;
  --ink-soft: #6b5f50;
  --accent: #8a2b2b;
  --accent-ink: #ffffff;
  --border: #ddd3c2;
  --tier1: #4a7c59;
  --tier2: #c98a2b;
  --tier3: #8a2b2b;
  --step-btn-bg: #e2ddd2;
  --step-btn-border: #c7bfae;
  --step-btn-active: #b6ada0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1712;
    --card-bg: #2a231c;
    --ink: #f0e9dd;
    --ink-soft: #b3a793;
    --border: #4a3f31;
    --step-btn-bg: #4a453e;
    --step-btn-border: #5c564c;
    --step-btn-active: #6b6459;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-bottom: 3rem;
}

header {
  padding: 1.25rem 1rem 1rem;
  text-align: center;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: 1.4rem;
  letter-spacing: 0.02em;
}

.mode-toggle {
  display: flex;
  gap: 0.4rem;
  max-width: 420px;
  margin: 0 auto;
}

.mode-btn {
  flex: 1;
  padding: 0.7rem 0.3rem;
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--ink);
  border-radius: 10px;
  cursor: pointer;
}

.mode-btn.active {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: var(--accent);
}

main {
  max-width: 480px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.1rem 1.25rem;
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.stat-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0;
}

.stat-row label {
  font-size: 1rem;
}

.stepper {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.step-btn {
  width: 2.2rem;
  height: 2.2rem;
  flex-shrink: 0;
  font-size: 1.3rem;
  line-height: 1;
  font-weight: 600;
  border: 1px solid var(--step-btn-border);
  background: var(--step-btn-bg);
  color: var(--ink);
  border-radius: 8px;
  cursor: pointer;
}

.step-btn:active {
  background: var(--step-btn-active);
  border-color: var(--step-btn-active);
}

.step-btn:disabled,
input:disabled {
  cursor: not-allowed;
}

.stat-row input[type="number"] {
  width: 3.2rem;
  font-size: 1.2rem;
  text-align: center;
  padding: 0.4rem 0.2rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--ink);
}

.mod-inputs {
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.6rem;
  padding-bottom: 0.2rem;
}

.rank-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.4rem 0;
}

.rank-row label {
  font-size: 0.95rem;
  line-height: 1.3;
}

.hint-inline {
  color: var(--ink-soft);
  font-weight: 400;
  font-size: 0.85em;
}

.rank-row.inactive {
  background: rgba(201, 138, 43, 0.14);
  border-radius: 8px;
  margin: 0 -0.5rem;
  padding: 0.4rem 0.5rem;
}

.rank-row.inactive label {
  opacity: 0.55;
}

.rank-row.inactive .stepper {
  opacity: 0.55;
}

.rank-row.inactive .hint-inline {
  color: var(--tier2);
  font-weight: 700;
  opacity: 1;
}

.mod-text {
  flex: 1;
}

.rank-row input[type="number"] {
  width: 2.8rem;
  font-size: 1.1rem;
  text-align: center;
  padding: 0.35rem 0.2rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--ink);
  flex-shrink: 0;
}

.mod-check {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.6rem 0;
  font-size: 0.95rem;
  line-height: 1.35;
  cursor: pointer;
}

.mod-check input[type="checkbox"],
.mod-check input[type="radio"] {
  width: 1.3rem;
  height: 1.3rem;
  flex-shrink: 0;
  margin-top: 0.15rem;
  accent-color: var(--accent);
}

.tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.1rem 0.4rem;
  border-radius: 5px;
  margin-right: 0.4rem;
  vertical-align: 1px;
}

.tag-you {
  background: rgba(74, 124, 89, 0.18);
  color: var(--tier1);
}

.tag-enemy {
  background: rgba(138, 43, 43, 0.14);
  color: var(--accent);
}

.mod-section {
  border-left: 3px solid var(--tier1);
  padding-left: 0.85rem;
  margin-bottom: 0.5rem;
}

.mod-section-enemy {
  border-left-color: var(--accent);
}

.mod-section-title {
  margin: 0 0 0.2rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.mod-section .mod-inputs {
  padding-top: 0.1rem;
}

.mod-note {
  margin: 0.75rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-soft);
  font-style: italic;
}

.hidden { display: none; }

.result {
  text-align: center;
}

.tn-display {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1;
  margin: 0.25rem 0;
}

.tn-breakdown {
  font-size: 0.85rem;
  color: var(--ink-soft);
  min-height: 1.2rem;
  margin-bottom: 0.75rem;
}

.tn-alert {
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 8px;
  padding: 0.5rem 0.7rem;
  margin-bottom: 0.75rem;
}

.tn-alert-special {
  background: rgba(201, 138, 43, 0.16);
  color: var(--tier2);
}

.tn-alert-auto {
  background: rgba(74, 124, 89, 0.14);
  color: var(--tier1);
}

.hit-tiers {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.hit-tier {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-left: 4px solid var(--border);
}

.hit-tier-1 { border-left-color: var(--tier1); }
.hit-tier-2 { border-left-color: var(--tier2); }
.hit-tier-3 { border-left-color: var(--tier3); }

.hit-tier.impossible {
  opacity: 0.4;
  border-left-color: var(--border);
}

.hit-tier.guaranteed {
  background: rgba(74, 124, 89, 0.1);
}

.hit-tier.special {
  background: rgba(201, 138, 43, 0.1);
}

.tier-count {
  font-size: 1rem;
  font-weight: 600;
}

.tier-roll {
  font-size: 1.3rem;
  font-weight: 700;
}

.hit-tier.impossible .tier-roll {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.hit-tier.special .tier-roll {
  font-size: 0.95rem;
}