:root {
  color-scheme: light;
  --bg: #f4f7f8;
  --surface: #ffffff;
  --surface-soft: #eef3f4;
  --text: #14212b;
  --muted: #60717d;
  --border: #d5dfe3;
  --primary: #12324a;
  --primary-text: #ffffff;
  --accent: #1b7f68;
  --accent-soft: #e3f3ee;
  --warning: #a76106;
  --warning-soft: #fff3dc;
  --danger: #b22b31;
  --danger-soft: #fdebed;
  --shadow: 0 12px 36px rgba(18, 50, 74, 0.08);
  --radius: 18px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0e171d;
    --surface: #152129;
    --surface-soft: #1c2a33;
    --text: #edf5f7;
    --muted: #aab9c1;
    --border: #31434d;
    --primary: #dceff5;
    --primary-text: #10212b;
    --accent: #65c6ac;
    --accent-soft: #183b34;
    --warning: #f0b45b;
    --warning-soft: #3c2b16;
    --danger: #ff8c91;
    --danger-soft: #421f23;
    --shadow: 0 14px 38px rgba(0, 0, 0, 0.22);
  }
}

* { box-sizing: border-box; }

html { min-height: 100%; background: var(--bg); }

body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.45;
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.app-shell {
  width: min(780px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: max(20px, env(safe-area-inset-top)) 16px max(36px, env(safe-area-inset-bottom));
}

.app-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 4px 2px 18px;
}

h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(1.55rem, 5vw, 2rem); letter-spacing: -0.035em; }
h2 { margin-bottom: 6px; font-size: clamp(1.35rem, 4.6vw, 1.75rem); letter-spacing: -0.025em; }
h3 { margin-bottom: 10px; font-size: 1.02rem; }

.eyebrow {
  margin-bottom: 3px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.secondary, .fine-print, .form-status, .privacy-note, .empty-state { color: var(--muted); }
.secondary { margin: 4px 0 0; font-size: 0.9rem; }
.fine-print, .form-status { margin: 10px 0 0; font-size: 0.84rem; }
.form-status.is-error { color: var(--danger); }
.form-status.is-success { color: var(--accent); }

.privacy-badge {
  flex: 0 0 auto;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.78rem;
}

.update-banner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
  padding: 12px 14px;
  border: 1px solid var(--accent);
  border-radius: 14px;
  background: var(--accent-soft);
}

.setup-panel {
  padding: clamp(24px, 7vw, 44px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: center;
}

.setup-icon {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  margin: 0 auto 18px;
  border-radius: 18px;
  background: var(--primary);
  color: var(--primary-text);
  font-size: 1.8rem;
  font-weight: 800;
}

.tab-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  padding: 5px;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  scrollbar-width: none;
}

.tab-bar::-webkit-scrollbar { display: none; }

.tab {
  flex: 0 0 auto;
  padding: 9px 13px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: var(--muted);
  font-weight: 650;
}

.tab.is-active {
  background: var(--primary);
  color: var(--primary-text);
}

.panel {
  padding: clamp(18px, 5vw, 28px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel[hidden], [hidden] { display: none !important; }

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.date-field {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 650;
}

.date-field input, .date-field select { margin-top: 4px; }

input, select, textarea {
  width: 100%;
  min-height: 44px;
  padding: 10px 11px;
  border: 1px solid var(--border);
  border-radius: 11px;
  outline: none;
  background: var(--surface);
  color: var(--text);
}

textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent); }

.mode-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
  padding: 14px;
  border-radius: 14px;
  background: var(--surface-soft);
}

.button, .file-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid transparent;
  border-radius: 11px;
  text-align: center;
  font-weight: 700;
}

.button-primary { background: var(--primary); color: var(--primary-text); }
.button-secondary, .secondary-file-button { border-color: var(--border); background: var(--surface); color: var(--text); }
.button-danger { border-color: var(--danger); background: transparent; color: var(--danger); }
.button-small { min-height: 36px; padding: 7px 10px; font-size: 0.85rem; }
.file-button { background: var(--primary); color: var(--primary-text); cursor: pointer; }
.file-button input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.progress-block { margin: 20px 0 10px; }
.progress-label { display: flex; justify-content: space-between; margin-bottom: 7px; color: var(--muted); font-size: 0.85rem; }
.progress-track { height: 10px; overflow: hidden; border-radius: 999px; background: var(--surface-soft); }
.progress-fill { width: 0; height: 100%; border-radius: inherit; background: var(--accent); transition: width 180ms ease; }

.checklist { display: grid; }
.task {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 15px 2px;
  border-bottom: 1px solid var(--border);
}
.task:last-child { border-bottom: 0; }
.task input { width: 22px; min-height: 22px; height: 22px; margin: 1px 0 0; accent-color: var(--accent); }
.task-title { display: block; font-weight: 700; }
.task-detail { display: block; margin-top: 3px; color: var(--muted); font-size: 0.88rem; }
.task.is-done .task-title { color: var(--muted); text-decoration: line-through; }

.success-message {
  display: grid;
  gap: 3px;
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--accent);
  border-radius: 13px;
  background: var(--accent-soft);
}

details { margin-top: 18px; border-top: 1px solid var(--border); padding-top: 16px; }
summary { cursor: pointer; font-weight: 700; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-grid label { display: grid; gap: 6px; color: var(--muted); font-size: 0.86rem; font-weight: 650; }
.span-2 { grid-column: 1 / -1; }
.compact-grid { margin-top: 16px; }

.safety-fieldset {
  margin: 20px 0 0;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
}
.safety-fieldset legend { padding: 0 7px; font-weight: 750; }
.check-row { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 10px; align-items: start; margin: 10px 0; }
.check-row input { width: 20px; min-height: 20px; height: 20px; accent-color: var(--accent); }

.readiness { display: grid; gap: 3px; margin-top: 14px; padding: 13px; border-left: 4px solid var(--warning); border-radius: 10px; background: var(--warning-soft); }
.readiness[data-level="green"] { border-color: var(--accent); background: var(--accent-soft); }
.readiness[data-level="red"] { border-color: var(--danger); background: var(--danger-soft); }

.form-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 20px; }

.priority-box, .professional-note { margin-bottom: 20px; padding: 15px; border-left: 4px solid var(--accent); border-radius: 12px; background: var(--accent-soft); }
.priority-box p:last-child, .professional-note p:last-child { margin-bottom: 0; }
.target-grid, .stats-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 24px; }
.target-card, .stat-card { padding: 14px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface-soft); }
.target-card strong, .stat-card strong { display: block; }
.target-card span, .stat-card span { display: block; margin-top: 4px; color: var(--muted); font-size: 0.88rem; }
.stat-value { margin-top: 4px; color: var(--text) !important; font-size: 1.45rem !important; font-weight: 750; }

.schedule { display: grid; margin-bottom: 22px; }
.schedule-row { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.schedule-row:last-child { border-bottom: 0; }

.chart-card { padding: 14px; border: 1px solid var(--border); border-radius: 14px; }
.chart-heading { display: flex; justify-content: space-between; gap: 12px; align-items: center; margin-bottom: 10px; }
.chart-heading select { width: auto; min-width: 130px; }
.trend-svg { display: block; width: 100%; height: auto; }
.chart-grid { stroke: var(--border); stroke-width: 1; }
.chart-line { fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.chart-dot { fill: var(--surface); stroke: var(--accent); stroke-width: 2; }
.chart-text { fill: var(--muted); font-size: 11px; }
.empty-state { padding: 24px 4px; text-align: center; }

.settings-group { padding: 18px 0; border-bottom: 1px solid var(--border); }
.settings-group:first-of-type { padding-top: 0; }
.settings-group:last-of-type { border-bottom: 0; }
.button-row { display: flex; flex-wrap: wrap; gap: 10px; }
.danger-zone { margin-top: 6px; }
.privacy-note { margin: 20px 0 0; font-size: 0.84rem; }

@media (max-width: 560px) {
  .app-shell { padding-left: 10px; padding-right: 10px; }
  .panel { padding: 17px 15px; }
  .section-heading { align-items: stretch; }
  .date-field { width: 136px; }
  .mode-row { align-items: stretch; flex-direction: column; }
  .form-grid { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .target-grid, .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 390px) {
  .privacy-badge { display: none; }
  .section-heading { flex-direction: column; }
  .date-field { width: 100%; }
  .target-grid, .stats-grid { grid-template-columns: 1fr; }
  .schedule-row { grid-template-columns: 78px minmax(0, 1fr); }
}