:root {
  --bg: #0d0b1e;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-2: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.1);
  --text: #f0eefa;
  --muted: #9b96b8;
  --primary: #8b5cf6;
  --primary-soft: #6d28d9;
  --accent2: #06b6d4;
  --income: #34d399;
  --expense: #f87171;
  --warn: #f59e0b;
  --radius: 20px;
  --tab-h: 64px;
  --header-h: 52px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior-y: contain;
}

button { font-family: inherit; cursor: pointer; }

/* Login gate — full screen, hides chrome while locked */
body.locked .app-header,
body.locked .tab-bar,
body.locked .fab { display: none; }
.login-screen {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; gap: 14px; max-width: 340px; margin: 0 auto;
  min-height: calc(100vh - var(--safe-top) - var(--safe-bottom) - 80px);
}
.login-logo {
  width: 88px; height: 88px; border-radius: 24px;
  box-shadow: 0 12px 34px rgba(139,92,246,.45);
}
.login-title {
  font-size: 1.9rem; font-weight: 800; margin: 6px 0 0;
  background: linear-gradient(90deg, #c4b5fd, #67e8f9);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.login-sub { color: var(--muted); font-size: 0.9rem; margin: 0 0 10px; }
.login-screen input { text-align: center; }
.login-screen .btn { width: 100%; }
.login-err { color: var(--expense); font-size: 0.85rem; min-height: 1.2em; margin: 2px 0 0; }

/* Animated background blobs (FileVault look) */
.blob {
  position: fixed; border-radius: 50%; filter: blur(90px); opacity: .35;
  z-index: 0; pointer-events: none;
}
.blob1 { width: 380px; height: 380px; background: #7c3aed; top: -120px; left: -120px;
  animation: drift 14s ease-in-out infinite alternate; }
.blob2 { width: 320px; height: 320px; background: #0891b2; bottom: -100px; right: -100px;
  animation: drift 18s ease-in-out infinite alternate-reverse; }
@keyframes drift { from { transform: translate(0,0) scale(1); } to { transform: translate(40px, 30px) scale(1.15); } }

/* Header */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: calc(var(--header-h) + var(--safe-top));
  padding: var(--safe-top) 16px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}
.app-header h1 {
  font-size: 1.3rem; font-weight: 800; margin: 0;
  background: linear-gradient(90deg, #c4b5fd, #67e8f9);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.icon-btn {
  background: none; border: none; color: var(--text);
  font-size: 1.3rem; width: 40px; height: 40px; border-radius: 12px;
}
.icon-btn:active { background: var(--surface-2); }

/* Live cloud-sync status */
.header-right { display: flex; align-items: center; gap: 8px; }
.sync-status { display: inline-flex; align-items: center; gap: 5px; }
.sync-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); flex: none; }
.sync-text { font-size: 0.7rem; color: var(--muted); white-space: nowrap; }
.sync-status[data-status=""] { display: none; }
.sync-status[data-status="synced"]  .sync-dot { background: var(--income); }
.sync-status[data-status="syncing"] .sync-dot { background: var(--warn); animation: sync-pulse 1s ease-in-out infinite; }
.sync-status[data-status="offline"] .sync-dot { background: var(--muted); }
.sync-status[data-status="error"]   .sync-dot { background: var(--expense); }
@keyframes sync-pulse { 50% { opacity: 0.3; } }

/* Main scroll area */
main {
  padding: calc(var(--header-h) + var(--safe-top) + 12px) 16px
           calc(var(--tab-h) + var(--safe-bottom) + 24px);
  min-height: 100vh;
  max-width: 640px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* Tab bar */
.tab-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: calc(var(--tab-h) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  display: flex;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-top: 1px solid var(--border);
  z-index: 50;
}
.tab {
  flex: 1; background: none; border: none; color: var(--muted);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; font-size: 0.68rem;
}
.tab-ico { font-size: 1.35rem; line-height: 1; }
.tab.active { color: var(--primary); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 14px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.section-title {
  font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--muted); margin: 22px 4px 10px; font-weight: 700;
}
.section-title:first-child { margin-top: 4px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(135deg, #8b5cf6, #6d28d9); color: #fff; border: none;
  border-radius: 14px; padding: 14px 18px; font-size: 1rem; font-weight: 700;
  width: 100%; box-shadow: 0 8px 28px rgba(139,92,246,.35);
}
.btn:active { transform: scale(0.97); }
.btn.secondary { background: rgba(255,255,255,.07); color: var(--text); border: 1px solid var(--border); box-shadow: none; }
.btn.danger { background: linear-gradient(135deg, #f87171, #b91c1c); box-shadow: 0 8px 28px rgba(248,113,113,.3); }
.btn.ghost { background: none; color: var(--primary); box-shadow: none; }
.btn-row { display: flex; gap: 10px; }
.btn-row .btn { flex: 1; }

/* Floating add button */
.fab {
  position: fixed; right: 18px;
  bottom: calc(var(--tab-h) + var(--safe-bottom) + 16px);
  width: 60px; height: 60px; border-radius: 50%;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 5v14M5 12h14' stroke='%23c4b5fd' stroke-width='2.2' stroke-linecap='round'/%3E%3C/svg%3E") center / 26px 26px no-repeat,
    rgba(139,92,246,.16);
  color: #fff; border: 1px solid rgba(139,92,246,.4);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 16px rgba(0,0,0,.3);
  z-index: 40; display: flex; align-items: center; justify-content: center;
  transition: transform .2s cubic-bezier(.2,.8,.2,1), background .2s;
}
.fab:hover { transform: scale(1.06) rotate(90deg); background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 5v14M5 12h14' stroke='%23c4b5fd' stroke-width='2.2' stroke-linecap='round'/%3E%3C/svg%3E") center / 26px 26px no-repeat,
    rgba(139,92,246,.28); }
.fab:active { transform: scale(0.9); }

/* Forms */
label { display: block; font-size: 0.82rem; color: var(--muted); margin: 14px 0 6px; font-weight: 600; }
input, select, textarea {
  width: 100%; background: rgba(0,0,0,0.25); color: var(--text);
  border: 1.5px solid var(--border); border-radius: 14px;
  padding: 13px 14px; font-size: 1rem; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); }
textarea { resize: vertical; min-height: 64px; }
/* iOS gives date/time inputs an intrinsic min-width that overflows — reset it */
input[type="date"], input[type="time"], input[type="datetime-local"] {
  -webkit-appearance: none; appearance: none;
  min-width: 0; max-width: 100%;
}

/* Segmented control */
.segment { display: flex; background: rgba(0,0,0,0.25); border: 1px solid var(--border); border-radius: 14px; padding: 4px; gap: 4px; }
.segment button {
  flex: 1; background: none; border: none; color: var(--muted);
  padding: 10px; border-radius: 11px; font-weight: 700; font-size: 0.95rem;
  transition: all .2s;
}
.segment button.active {
  background: linear-gradient(135deg, rgba(139,92,246,.3), rgba(139,92,246,.12));
  color: #d8ccff; box-shadow: 0 4px 16px rgba(139,92,246,.25);
}
.segment.io button.active.income {
  background: linear-gradient(135deg, rgba(52,211,153,.3), rgba(52,211,153,.1)); color: #a7f3d0; box-shadow: none;
}
.segment.io button.active.expense {
  background: linear-gradient(135deg, rgba(248,113,113,.3), rgba(248,113,113,.1)); color: #fecaca; box-shadow: none;
}

/* Lists */
.list-row {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 4px; border-bottom: 1px solid var(--border);
}
.list-row:last-child { border-bottom: none; }
.row-icon {
  width: 38px; height: 38px; border-radius: 11px; flex: none;
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
  background: rgba(255,255,255,.06); border: 1px solid var(--border);
}
.row-main { flex: 1; min-width: 0; }
.row-title { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-sub { font-size: 0.8rem; color: var(--muted); margin-top: 2px; }
.row-amt { font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }
.amt-income { color: var(--income); }
.amt-expense { color: var(--expense); }

/* Checkbox circle */
.check {
  width: 26px; height: 26px; border-radius: 50%; flex: none;
  border: 2px solid var(--border); display: flex; align-items: center; justify-content: center;
  color: transparent; font-size: 0.9rem;
}
.check.done { background: linear-gradient(135deg, #34d399, #059669); border-color: #34d399; color: #fff; box-shadow: 0 2px 12px rgba(52,211,153,.4); }
.task-done .row-title { text-decoration: line-through; color: var(--muted); }
.overdue { color: var(--expense) !important; }

/* Balance header */
.balance {
  text-align: center; padding: 8px 0 4px;
}
.balance .label { color: var(--muted); font-size: 0.85rem; }
.balance .value { font-size: 2.1rem; font-weight: 800; margin-top: 2px; font-variant-numeric: tabular-nums; }
.io-pair { display: flex; gap: 12px; margin-top: 14px; }
.io-pair .box { flex: 1; background: rgba(255,255,255,.04); border: 1px solid var(--border); border-radius: 14px; padding: 12px; text-align: center; }
.io-pair .box .label { font-size: 0.75rem; color: var(--muted); }
.io-pair .box .num { font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }

/* Stats bars */
.bar-row { margin: 12px 0; }
.bar-head { display: flex; justify-content: space-between; font-size: 0.9rem; margin-bottom: 6px; }
.bar-track { height: 9px; background: var(--surface-2); border-radius: 6px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 6px; }

/* Donut */
.donut-wrap { display: flex; align-items: center; gap: 18px; }
.donut-center { font-weight: 800; font-size: 1.1rem; }

/* Empty state */
.empty { text-align: center; color: var(--muted); padding: 40px 20px; }
.empty .big { font-size: 2.4rem; margin-bottom: 8px; }

/* Pills */
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.pill {
  padding: 9px 14px; border-radius: 999px; background: rgba(255,255,255,.05);
  border: 1px solid var(--border); color: var(--text); font-size: 0.9rem; font-weight: 600;
  transition: all .2s;
}
.pill.active {
  background: linear-gradient(135deg, rgba(139,92,246,.3), rgba(139,92,246,.12));
  border-color: var(--primary); color: #d8ccff; box-shadow: 0 4px 16px rgba(139,92,246,.25);
}

/* Period switcher */
.period-nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.period-nav button { background: rgba(255,255,255,.06); border: 1px solid var(--border); color: var(--text);
  width: 40px; height: 40px; border-radius: 12px; font-size: 1.1rem; }
.period-nav button:active { transform: scale(0.94); }
.period-nav .period-label { font-weight: 700; }

/* Bottom sheet */
.sheet-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  z-index: 100; display: flex; align-items: flex-end;
  animation: fade 0.18s ease;
}
.sheet {
  background: #15122b; border: 1px solid var(--border); border-bottom: none;
  width: 100%; max-width: 640px; margin: 0 auto;
  border-radius: 22px 22px 0 0; padding: 8px 18px calc(22px + var(--safe-bottom));
  max-height: 92vh; overflow-y: auto;
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  animation: slideup 0.24s cubic-bezier(.2,.8,.2,1);
  transition: transform 0.25s cubic-bezier(.2,.8,.2,1);
  touch-action: pan-y;
}
.sheet-grip { width: 40px; height: 5px; border-radius: 3px; background: rgba(255,255,255,.2); margin: 8px auto 6px; }
.sheet h2 { margin: 4px 0 8px; font-size: 1.25rem; }
@keyframes fade { from { opacity: 0; } }
@keyframes slideup { from { transform: translateY(100%); } }

.row-del { color: var(--expense); background: none; border: none; font-size: 1.1rem; padding: 6px; }
.tag { font-size: 0.72rem; padding: 2px 8px; border-radius: 6px; background: rgba(255,255,255,.06); border: 1px solid var(--border); color: var(--muted); }
.hint { font-size: 0.82rem; color: var(--muted); margin-top: 8px; line-height: 1.45; }
.swatch { width: 20px; height: 20px; border-radius: 6px; display: inline-block; vertical-align: middle; }