:root {
  --color-bg: #f5f7f6;
  --color-card: #ffffff;
  --color-text: #1b2420;
  --color-muted: #5b6b63;
  --color-primary: #1f7a53;
  --color-primary-dark: #15573b;
  --color-accent: #b9532f;
  --color-border: #d9e1dc;
  --color-warn-bg: #fdecea;
  --color-warn-border: #d64545;
  --color-warn-text: #7a1f1f;
  --color-unverified-bg: #fff4e0;
  --color-unverified-text: #7a4b00;
  --radius: 10px;
  --nav-height: 64px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  overflow-x: hidden;
  width: 100%;
}

h1, h2, h3 { margin: 0 0 0.5em 0; }
h2 { font-size: 1.1rem; }
h3 { font-size: 1rem; }

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--color-primary);
  color: white;
  position: sticky;
  top: 0;
  z-index: 10;
}
.app-header h1 { font-size: 1.15rem; color: white; }

.icon-button {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.6);
  color: white;
  border-radius: var(--radius);
  padding: 10px 14px;
  min-height: 44px;
  font-size: 0.95rem;
  cursor: pointer;
}

#main-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: calc(var(--nav-height) + 24px);
}

.view { display: flex; flex-direction: column; gap: 16px; }
.view[hidden] { display: none; }

.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 16px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.stat-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px;
}
.stat-card .stat-value { font-size: 1.4rem; font-weight: 700; }
.stat-card .stat-label { color: var(--color-muted); font-size: 0.85rem; }
.stat-card .stat-explain { font-size: 0.78rem; color: var(--color-muted); margin-top: 4px; }

label { display: block; font-weight: 600; margin: 10px 0 4px; }
input[type="text"],
input[type="number"],
input[type="date"],
select {
  width: 100%;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  background: white;
  color: var(--color-text);
}
input[type="file"] { width: 100%; min-height: 44px; }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.primary-button, .secondary-button {
  min-height: 44px;
  min-width: 44px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  padding: 10px 16px;
  margin-top: 12px;
}
.primary-button {
  background: var(--color-primary);
  color: white;
  border: none;
}
.primary-button:hover { background: var(--color-primary-dark); }
.secondary-button {
  background: white;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.hint { color: var(--color-muted); font-size: 0.85rem; }

.picked-box {
  margin-top: 12px;
  padding: 12px;
  background: var(--color-bg);
  border-radius: var(--radius);
}

.live-preview {
  margin-top: 10px;
  padding: 10px;
  background: var(--color-bg);
  border-radius: var(--radius);
  font-size: 0.95rem;
}

.entries-list { display: flex; flex-direction: column; gap: 8px; }
.entry-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.entry-row .entry-main { flex: 1; }
.entry-row .entry-sub { color: var(--color-muted); font-size: 0.82rem; }
.delete-btn {
  min-height: 44px;
  min-width: 44px;
  border-radius: var(--radius);
  border: 1px solid var(--color-warn-border);
  background: white;
  color: var(--color-warn-border);
  cursor: pointer;
  font-size: 1rem;
}

.empty-state {
  text-align: center;
  color: var(--color-muted);
  padding: 20px;
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 999px;
  margin-left: 6px;
}
.badge-unverified {
  background: var(--color-unverified-bg);
  color: var(--color-unverified-text);
  border: 1px solid #e0a74a;
}
.badge-unverified::before { content: "⚠ "; }

.progress-row { margin-bottom: 14px; }
.progress-row label {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  margin-bottom: 6px;
}
.progress-bar {
  height: 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--color-primary);
  width: 0%;
  transition: width 0.2s ease;
}
.progress-fill.over-target { background: var(--color-accent); }

.how-calculated { margin-top: 10px; }
.how-calculated summary { cursor: pointer; font-weight: 600; color: var(--color-primary); }

.chart-wrap { position: relative; width: 100%; max-width: 100%; }
.chart-wrap canvas { max-width: 100%; }
.chart-summary { color: var(--color-muted); font-size: 0.85rem; margin-top: 8px; }

.disclaimer {
  background: #eef3f0;
  font-size: 0.85rem;
  color: var(--color-muted);
}
.disclaimer p { margin: 0 0 8px; }
.disclaimer p:last-child { margin-bottom: 0; }

.notice {
  background: var(--color-unverified-bg);
  color: var(--color-unverified-text);
  border: 1px solid #e0a74a;
  padding: 10px;
  border-radius: var(--radius);
  font-weight: 600;
}

.data-load-error {
  max-width: 720px;
  margin: 12px auto 0;
  font-weight: 400;
}
.data-load-error code {
  background: rgba(0,0,0,0.08);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.9em;
}

.age60-note {
  background: #e7f0fb;
  border: 1px solid #a9c7e8;
  color: #1c4a78;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.floor-warning {
  background: var(--color-warn-bg);
  border: 1px solid var(--color-warn-border);
  color: var(--color-warn-text);
  padding: 10px;
  border-radius: var(--radius);
  margin-top: 8px;
  font-size: 0.9rem;
}

.error-box {
  background: var(--color-warn-bg);
  border: 1px solid var(--color-warn-border);
  color: var(--color-warn-text);
  padding: 10px;
  border-radius: var(--radius);
  margin-top: 10px;
  font-size: 0.9rem;
}
.success-box {
  background: #eaf7ee;
  border: 1px solid var(--color-primary);
  color: var(--color-primary-dark);
  padding: 10px;
  border-radius: var(--radius);
  margin-top: 10px;
  font-size: 0.9rem;
}

.quick-links { display: flex; flex-direction: column; gap: 10px; }
.link-button { width: 100%; text-align: left; margin-top: 0; }

.custom-entry { margin-top: 14px; }
.custom-entry summary { cursor: pointer; font-weight: 600; color: var(--color-primary); min-height: 44px; display: flex; align-items: center; }

.radio-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 6px; }
.radio-row label { display: flex; align-items: center; gap: 6px; font-weight: 400; min-height: 44px; }
.radio-row input { width: auto; min-height: auto; }

/* ---- navigation ---- */
.main-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  height: var(--nav-height);
  z-index: 10;
}
.nav-btn {
  flex: 1;
  background: none;
  border: none;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 1.3rem;
  color: var(--color-muted);
  cursor: pointer;
  min-height: 44px;
}
.nav-btn span { font-size: 0.7rem; font-weight: 600; }
.nav-btn[aria-current="page"] {
  color: var(--color-primary);
  background: var(--color-bg);
}

/* ---- modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}
.modal-overlay[hidden] {
  display: none;
}
.modal-box {
  background: white;
  border-radius: var(--radius);
  padding: 20px;
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

/* ---- desktop layout ---- */
@media (min-width: 768px) {
  .main-nav {
    position: static;
    height: auto;
    justify-content: flex-start;
    border-top: none;
    border-bottom: 1px solid var(--color-border);
    gap: 4px;
    padding: 0 16px;
  }
  .nav-btn {
    flex: 0 0 auto;
    flex-direction: row;
    padding: 10px 18px;
    gap: 8px;
    font-size: 1rem;
  }
  #main-content { padding-bottom: 32px; }
  .card-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 420px) {
  .field-row { grid-template-columns: 1fr; }
}