/* ═══════════════════════════════════════════
   SUNSET FIRE / 老後資金シミュレーター — Navy × Warm
   ═══════════════════════════════════════════ */

.sfs-root {
  --navy: #1a2f4a;
  --navy-light: #2a4a6a;
  --gold: #c5944a;
  --gold-dim: rgba(197, 148, 74, 0.08);
  --gold-border: rgba(197, 148, 74, 0.2);
  --ivory: #f5f3ee;
  --ivory-dark: #eae7df;
  --white: #fff;
  --text: #2a2a2a;
  --text-muted: #777;
  --text-light: #999;
  --text-hint: #bbb;
  --border: #ddd8ce;
  --green: #0f6e56;
  --green-bg: #e8f5ee;
  --green-border: #b5dfc8;
  --amber: #854f0b;
  --amber-bg: #faeeda;
  --amber-border: #f0ddb0;
  --red: #a32d2d;
  --red-bg: #fcebeb;
  --red-border: #f0c1c2;
  font-family: 'Noto Serif JP', 'YuMincho', 'Yu Mincho', Georgia, serif;
  background: var(--ivory);
  color: var(--text);
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 0 32px;
  line-height: 1.8;
  border-radius: 12px;
  border: 0.5px solid var(--border);
  overflow: hidden;
}

/* ── Header ── */
.sfs-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  background: var(--navy);
  border-bottom: 3px solid var(--gold);
}

.sfs-icon {
  font-size: 28px;
  width: 44px;
  height: 44px;
  background: rgba(197, 148, 74, 0.12);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: none;
}

.sfs-title {
  font-size: 18px !important;
  font-weight: 500 !important;
  color: var(--ivory) !important;
  margin: 0 !important;
  padding: 0 !important;
  background: none !important;
  border: none !important;
  letter-spacing: 1px !important;
}

.sfs-subtitle {
  font-size: 12px;
  color: rgba(245, 243, 238, 0.45);
  margin: 4px 0 0 0;
}

/* ── Layout ── */
.sfs-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 16px;
  padding: 20px;
  align-items: start;
}

@media (max-width: 860px) {
  .sfs-layout {
    grid-template-columns: 1fr;
  }
}

/* ── Panels ── */
.sfs-panel {
  background: var(--white);
  border: 0.5px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.sfs-panel-header {
  padding: 12px 20px;
  font-size: 12px;
  font-weight: 500;
  color: var(--navy);
  border-bottom: 0.5px solid var(--ivory-dark);
  letter-spacing: 0.5px;
}

/* ── Input Panel ── */
.sfs-input-panel {
  position: sticky;
  top: 20px;
}

.sfs-field {
  padding: 12px 20px 0;
}

.sfs-field label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-light);
  margin-bottom: 4px;
}

.sfs-input-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sfs-input {
  flex: 1;
  background: var(--ivory);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 14px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  width: 100%;
  transition: border-color 0.2s;
}

.sfs-input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 2px var(--gold-dim);
}

.sfs-unit {
  font-size: 12px;
  color: var(--text-light);
  white-space: nowrap;
  min-width: 36px;
}

/* ── Range Slider ── */
.sfs-range {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  outline: none;
  cursor: pointer;
}

.sfs-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid var(--gold);
  cursor: pointer;
  transition: transform 0.15s;
}

.sfs-range::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.sfs-range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: var(--navy);
  cursor: pointer;
}

.sfs-range-val {
  font-size: 14px;
  font-weight: 500;
  color: var(--navy);
  min-width: 56px;
  text-align: right;
}

/* ── Calc Button ── */
.sfs-calc-btn {
  display: block;
  width: calc(100% - 40px);
  margin: 18px 20px 20px;
  padding: 12px;
  background: var(--navy);
  color: var(--ivory);
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-family: inherit;
  letter-spacing: 1px;
  transition: all 0.2s;
}

.sfs-calc-btn:hover {
  background: var(--navy-light);
  box-shadow: 0 4px 16px rgba(26, 47, 74, 0.15);
}

.sfs-calc-btn:active {
  transform: translateY(0);
}

/* ── Scenario Cards ── */
.sfs-scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 16px;
}

@media (max-width: 600px) {
  .sfs-scenario-grid {
    grid-template-columns: 1fr;
  }
}

.sfs-scenario-card {
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  border: 0.5px solid var(--border);
  transition: transform 0.2s, box-shadow 0.2s;
}

.sfs-scenario-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(26, 47, 74, 0.06);
}

.sfs-optimistic {
  background: var(--green-bg);
  border-color: var(--green-border);
}

.sfs-neutral {
  background: var(--amber-bg);
  border-color: var(--amber-border);
}

.sfs-pessimistic {
  background: var(--red-bg);
  border-color: var(--red-border);
}

.sfs-scenario-label {
  font-size: 11px;
  font-weight: 500;
  margin-bottom: 2px;
  letter-spacing: 0.5px;
}

.sfs-optimistic .sfs-scenario-label {
  color: var(--green);
}

.sfs-neutral .sfs-scenario-label {
  color: var(--amber);
}

.sfs-pessimistic .sfs-scenario-label {
  color: var(--red);
}

.sfs-scenario-return {
  font-size: 11px;
  color: var(--text-light);
  margin-bottom: 10px;
}

.sfs-scenario-fire {
  font-size: 9px;
  color: var(--text-hint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.sfs-scenario-age {
  font-size: 28px;
  font-weight: 500;
  line-height: 1.2;
  margin-bottom: 8px;
}

.sfs-optimistic .sfs-scenario-age {
  color: var(--green);
}

.sfs-neutral .sfs-scenario-age {
  color: var(--amber);
}

.sfs-pessimistic .sfs-scenario-age {
  color: var(--red);
}

.sfs-scenario-at65 {
  font-size: 9px;
  color: var(--text-hint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 4px;
}

.sfs-scenario-amount {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
}

/* ── Chart ── */
.sfs-chart-wrap {
  padding: 16px;
  height: 300px;
  position: relative;
}

/* ── Insight ── */
.sfs-insight {
  margin: 0 16px 14px;
  padding: 16px 18px;
  background: var(--gold-dim);
  border: 0.5px solid var(--gold-border);
  border-radius: 8px;
  font-size: 13px;
  color: #555;
  line-height: 1.8;
}

.sfs-insight strong {
  color: var(--navy);
}

/* ── FIRE Conditions ── */
.sfs-conditions {
  margin: 0 16px 16px;
  padding: 16px 18px;
  background: var(--ivory);
  border: 0.5px solid var(--border);
  border-radius: 8px;
}

.sfs-cond-title {
  font-size: 12px;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 6px;
}

.sfs-cond-text {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 8px 0;
  line-height: 1.8;
}

.sfs-cond-text strong {
  color: var(--text);
}

.sfs-cond-target {
  font-size: 18px;
  font-weight: 500;
  color: var(--gold);
}

/* ── Footer ── */
.sfs-footer {
  text-align: center;
  font-size: 11px;
  color: var(--text-hint);
  padding: 16px 20px 0;
  line-height: 1.8;
}

/* ── Responsive ── */
@media (max-width: 860px) {
  .sfs-input-panel {
    position: static;
  }
}

@media (max-width: 600px) {
  .sfs-header {
    padding: 16px;
  }

  .sfs-layout {
    padding: 12px;
    gap: 12px;
  }

  .sfs-field {
    padding: 10px 14px 0;
  }

  .sfs-calc-btn {
    width: calc(100% - 28px);
    margin: 14px 14px;
  }

  .sfs-scenario-grid {
    padding: 12px;
    gap: 8px;
  }

  .sfs-scenario-age {
    font-size: 22px;
  }
}