:root {
  /* พื้นและผิว */
  --bg: #EEF0FA;
  --bg-grad: linear-gradient(160deg, #F3F4FC 0%, #E9ECF9 100%);
  --panel: #FFFFFF;
  --panel-2: #F7F8FD;
  --border: #EEF0F9;

  /* ตัวอักษร */
  --text: #2B3157;
  --muted: #6A7296;

  /* แบรนด์ */
  --accent: #4A5BD6;
  --accent-hover: #3D4DC4;
  --accent-soft: #EDEFFD;
  --violet: #7C6BE8;
  --brand-grad: linear-gradient(105deg, #4A5BD6 0%, #5D6FE3 55%, #7C6BE8 100%);

  /* สถานะ */
  --up: #0C8770;
  --down: #C93257;
  --down-on-brand: #FFD1DC;
  --flat: #6A7296;

  /* สีหมวดหมู่ (donut + legend + progress) */
  --c1: #4A5BD6; /* การลงทุน */
  --c2: #7C6BE8; /* PVD */
  --c3: #F86D8E; /* สหกรณ์ */
  --c4: #FFB061;
  --c5: #2ECFAE;
  --c6: #C9D0EC;

  /* เตือน */
  --warn-bg: #FFF6E9;
  --warn-border: #FFE0B8;
  --warn-text: #8A5A12;

  /* พื้นผิวเสริม */
  --on-brand: #FFFFFF;
  --surface-hover: #F2F4FD;
  --surface-hover-2: #E2E5FC;
  --track-bg: #ECEEF9;
  --input-border: #E3E7F5;

  /* รูปทรง */
  --r-lg: 26px;
  --r-md: 20px;
  --r-sm: 14px;
  --shadow: 0 16px 34px -24px rgba(30,40,100,.55);
  --shadow-brand: 0 26px 50px -26px rgba(74,91,214,.8);

  --font-num: "Sora", sans-serif;
  font-family: "Anuphan", "Noto Sans Thai", "Sarabun", -apple-system, sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg-grad);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  padding-top: max(20px, env(safe-area-inset-top));
  flex-wrap: wrap;
  gap: 8px;
  background: var(--brand-grad);
  color: var(--on-brand);
  border: none;
  border-radius: 0 0 28px 28px;
  box-shadow: var(--shadow-brand);
}
.topbar h1 {
  margin: 0;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  gap: 12px;
}
.app-icon { width: 40px; height: 40px; border-radius: 13px; display: block; }
.today { color: rgba(255,255,255,.85); font-size: 0.9rem; }
.sync-status { font-size: 0.8rem; opacity: .9; }
.sync-status.warn { color: var(--warn-border); }
.sync-status.bad { color: var(--down-on-brand); }

.toast-root {
  position: fixed;
  left: 50%;
  bottom: max(20px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: var(--text);
  color: var(--panel);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  box-shadow: var(--shadow);
  z-index: 60;
  max-width: 90vw;
  text-align: center;
}
#app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px 16px 60px;
  padding-bottom: max(60px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---------- reminders ---------- */
.reminders {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--r-md);
  padding: 14px 16px;
}
.reminder-head { font-weight: 700; margin-bottom: 8px; color: var(--warn-text); }
.reminder-list { display: flex; flex-direction: column; gap: 6px; }
.reminder-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.85rem;
  flex-wrap: wrap;
}
.reminder-days { color: var(--muted); }
.reminder-row .btn-icon { min-height: 36px; }

.stale-badge {
  display: inline-block;
  background: var(--warn-border);
  color: var(--warn-text);
  border-radius: 999px;
  font-size: 0.7rem;
  padding: 1px 8px;
  vertical-align: middle;
  margin-left: 4px;
}

/* ---------- overview ---------- */
.overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.ov-tile {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  padding: 22px;
}
.ov-label { color: var(--muted); font-size: 0.85rem; margin-bottom: 6px; }
.ov-value { font-family: var(--font-num); font-weight: 700; font-size: 1.5rem; }
.ov-sub { color: var(--muted); font-size: 0.8rem; margin-top: 4px; }
.ov-progress {
  margin-top: 10px;
  height: 6px;
  border-radius: 999px;
  background: var(--track-bg);
  overflow: hidden;
}
.ov-progress i { display: block; height: 100%; background: var(--c1); border-radius: 999px; }
.ov-breakdown { grid-column: 1 / -1; }
.ov-donut-wrap { display: flex; align-items: center; gap: 20px; margin-top: 8px; flex-wrap: wrap; }
.donut-box { flex: 0 0 auto; width: 170px; height: 170px; }
.ov-legend { display: flex; flex-direction: column; gap: 10px; flex: 1 1 180px; min-width: 160px; }
.legend-row { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; }
.legend-row .sw { width: 10px; height: 10px; border-radius: 3px; flex: 0 0 auto; }
.legend-label { flex: 1 1 auto; }
.legend-val { color: var(--muted); font-family: var(--font-num); }

@media (max-width: 640px) {
  .overview { grid-template-columns: 1fr; }
  .ov-donut-wrap { justify-content: center; }
}

/* ---------- tooltip ---------- */
.tooltip {
  position: fixed;
  z-index: 50;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.8rem;
  color: var(--text);
  pointer-events: none;
  box-shadow: 0 12px 28px -14px rgba(30,40,100,.45);
}
.tt-h { font-weight: 700; margin-bottom: 4px; }
.tt-r { display: flex; align-items: center; gap: 6px; justify-content: space-between; }
.tt-r .sw { width: 8px; height: 8px; border-radius: 2px; }
.tt-r .v { font-weight: 600; margin-left: 10px; font-family: var(--font-num); }

#trend-chart svg { display: block; width: 100%; height: auto; }
#trend-chart .hit:hover { cursor: crosshair; }

/* ---------- gain badge ---------- */
.gain { font-weight: 600; font-size: 0.9rem; font-family: var(--font-num); }
.gain.up { color: var(--up); }
.gain.down { color: var(--down); }
.gain.flat { color: var(--flat); }

/* ---------- category sections ---------- */
.cat-section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  padding: 22px;
}
.cat-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-bottom: 12px;
}
.cat-head h2 { margin: 0; font-size: 1.05rem; flex: 1 1 auto; min-width: 180px; color: var(--text); }
.cat-total { display: flex; align-items: baseline; gap: 10px; font-weight: 700; font-family: var(--font-num); }
.btn-add {
  background: var(--accent);
  color: var(--on-brand);
  border: none;
  border-radius: 14px;
  padding: 10px 16px;
  min-height: 44px;
  cursor: pointer;
  font-size: 0.85rem;
}
.btn-add:hover { background: var(--accent-hover); }

.cat-section .ov-progress { margin-bottom: 14px; }
.h-list { display: flex; flex-direction: column; gap: 8px; }
.empty { color: var(--muted); font-size: 0.9rem; padding: 12px 0; text-align: center; }

.h-row {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  align-items: center;
  gap: 12px;
  background: var(--panel-2);
  border-radius: var(--r-sm);
  padding: 10px 12px;
}
.h-row:hover { background: var(--surface-hover); }
.h-name { font-weight: 600; }
.h-note { color: var(--muted); font-size: 0.8rem; }
.h-nums { text-align: right; display: flex; flex-direction: column; gap: 2px; }
.h-value { font-weight: 700; font-family: var(--font-num); }
.h-cost { color: var(--muted); font-size: 0.78rem; font-family: var(--font-num); }
.h-meta { color: var(--muted); font-size: 0.75rem; white-space: nowrap; }
.h-actions { display: flex; gap: 4px; }
.btn-icon {
  background: var(--accent-soft);
  color: var(--accent);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  padding: 8px 10px;
  min-height: 44px;
  font-size: 0.9rem;
}
.btn-icon:hover { background: var(--surface-hover-2); }

@media (max-width: 560px) {
  .h-row { grid-template-columns: 1fr; text-align: left; }
  .h-nums { text-align: left; flex-direction: row; gap: 10px; }
  .h-actions { justify-content: flex-end; }
}

/* ---------- dialog ---------- */
dialog {
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  padding: 20px;
  width: min(420px, 92vw);
}
dialog::backdrop { background: rgba(43,49,87,.35); backdrop-filter: blur(3px); }
dialog h3 { margin-top: 0; }
dialog label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 12px;
}
dialog input {
  background: var(--panel-2);
  border: 1px solid var(--input-border);
  border-radius: 12px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}
dialog input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 8px; }
.btn-primary, .btn-secondary {
  border: none;
  border-radius: 14px;
  padding: 10px 16px;
  min-height: 44px;
  cursor: pointer;
  font-size: 0.9rem;
}
.btn-primary { background: var(--accent); color: var(--on-brand); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--accent-soft); color: var(--accent); }
.btn-secondary:hover { background: var(--surface-hover-2); }