/* BillBot — Stark HUD theme */
:root {
  --cyan: #00d2ff;
  --amber: #ffb84d;
  --green: #4dff9c;
  --red: #ff4d6a;
  --bg: #02060d;
  --surface: #0a1320;
  --surface-2: #0f1a2c;
  --line: #1a2740;
  --text: #e8f1ff;
  --muted: #7a8a9c;
  --font: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: contain;
}

body {
  background:
    radial-gradient(ellipse at top, rgba(0, 210, 255, 0.08), transparent 60%),
    radial-gradient(ellipse at bottom, rgba(255, 184, 77, 0.04), transparent 60%),
    var(--bg);
  min-height: 100vh;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

.hud-frame {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---- Header ---- */
.hud-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 8px; }
.logo { color: var(--cyan); font-size: 18px; }
.brand-name {
  font-weight: 700;
  letter-spacing: 0.18em;
  font-size: 13px;
  color: var(--text);
}

.status-pill {
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--cyan);
  padding: 4px 10px;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  background: rgba(0, 210, 255, 0.06);
}
.status-pill.ok    { color: var(--green); border-color: var(--green); background: rgba(77, 255, 156, 0.06); }
.status-pill.error { color: var(--red);   border-color: var(--red);   background: rgba(255, 77, 106, 0.06); }

main {
  flex: 1;
  padding: 20px 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 60px 0;
  color: var(--muted);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--line);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- HUD bracket corners (shared) ---- */
.hud-bracket {
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
}
.hud-bracket.tl { top: 6px;    left: 6px;    border-top: 2px solid var(--cyan); border-left: 2px solid var(--cyan); }
.hud-bracket.tr { top: 6px;    right: 6px;   border-top: 2px solid var(--cyan); border-right: 2px solid var(--cyan); }
.hud-bracket.bl { bottom: 6px; left: 6px;    border-bottom: 2px solid var(--cyan); border-left: 2px solid var(--cyan); }
.hud-bracket.br { bottom: 6px; right: 6px;   border-bottom: 2px solid var(--cyan); border-right: 2px solid var(--cyan); }

/* ---- Card with bracket corners ---- */
.acc-card,
.form-card {
  position: relative;
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-2) 100%);
  border: 1px solid var(--line);
  padding: 24px 20px;
  clip-path: polygon(
    12px 0, 100% 0, 100% calc(100% - 12px),
    calc(100% - 12px) 100%, 0 100%, 0 12px
  );
}

/* ---- Screen layout ---- */
.screen { display: flex; flex-direction: column; gap: 14px; }
.screen-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
  padding: 4px 4px 8px;
}
.screen-title.small { font-size: 16px; padding-top: 0; }

/* ---- Mode picker ---- */
.mode-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
  border: 1px solid var(--line);
  color: var(--text);
  text-align: left;
  font-family: var(--font);
  cursor: pointer;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  transition: filter 0.15s, border-color 0.15s;
}
.mode-card:hover:not(:disabled) {
  filter: brightness(1.08);
  border-color: var(--cyan);
}
.mode-card:disabled,
.mode-card.disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.mode-icon {
  font-size: 24px;
  width: 40px;
  text-align: center;
  flex-shrink: 0;
}
.mode-text { flex: 1; }
.mode-title { font-weight: 700; font-size: 15px; margin-bottom: 4px; }
.mode-desc  { font-size: 11px; color: var(--muted); line-height: 1.5; }
.soon {
  font-size: 9px;
  color: var(--amber);
  border: 1px solid var(--amber);
  padding: 1px 6px;
  border-radius: 999px;
  margin-left: 4px;
}
.mode-arrow {
  font-size: 24px;
  color: var(--cyan);
  font-weight: 300;
  flex-shrink: 0;
}

/* ---- Form ---- */
.form-card { padding: 20px 18px; display: flex; flex-direction: column; gap: 12px; }

.field { display: flex; flex-direction: column; gap: 6px; }
.field.inline {
  display: grid;
  grid-template-columns: 1fr 110px;
  align-items: center;
  gap: 10px;
}
.field.inline .label { margin: 0; }
.field.inline .input { text-align: right; }

.label {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.input {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--line);
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.15s;
  width: 100%;
}
.input:focus { border-color: var(--cyan); }
.input::placeholder { color: rgba(122, 138, 156, 0.5); }

.hint { font-size: 10px; color: var(--muted); }

.section-divider {
  font-size: 10px;
  color: var(--cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line);
  padding: 8px 0 6px;
  margin-top: 4px;
}

.btn-primary,
.btn-confirm {
  display: block;
  width: 100%;
  padding: 14px;
  background: var(--cyan);
  color: var(--bg);
  font-family: var(--font);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  border: none;
  cursor: pointer;
  margin-top: 8px;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: filter 0.15s;
}
.btn-confirm { background: var(--green); }
.btn-primary:hover, .btn-confirm:hover { filter: brightness(1.1); }
.btn-primary:active, .btn-confirm:active { filter: brightness(0.92); }
.btn-primary:disabled, .btn-confirm:disabled {
  background: var(--line);
  color: var(--muted);
  cursor: not-allowed;
}

.back-btn {
  background: none;
  border: none;
  color: var(--cyan);
  font-family: var(--font);
  font-size: 12px;
  padding: 6px 0;
  cursor: pointer;
  align-self: flex-start;
}
.back-btn:hover { color: var(--text); }

/* ---- Item rows (create itemized) ---- */
.items-list { display: flex; flex-direction: column; gap: 8px; margin-top: 4px; }

.item-row {
  display: grid;
  grid-template-columns: 1fr 90px 60px 32px;
  gap: 6px;
  align-items: center;
}
.item-row .input { padding: 8px 10px; font-size: 13px; }
.item-row .item-price, .item-row .item-qty { text-align: right; }

.btn-remove {
  background: rgba(255, 77, 106, 0.1);
  border: 1px solid var(--red);
  color: var(--red);
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 16px;
  font-family: var(--font);
}
.btn-remove:hover { background: var(--red); color: var(--bg); }

.btn-add-item {
  background: rgba(0, 210, 255, 0.05);
  border: 1px dashed var(--cyan);
  color: var(--cyan);
  padding: 10px;
  cursor: pointer;
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: 0.08em;
  width: 100%;
}
.btn-add-item:hover { background: rgba(0, 210, 255, 0.12); }

.bill-preview-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 12px 14px;
  background: rgba(255, 184, 77, 0.06);
  border-left: 3px solid var(--amber);
  margin-top: 8px;
  font-size: 13px;
}
.bill-preview-total strong {
  font-size: 18px;
  color: var(--amber);
  font-weight: 700;
}

/* ---- Bill head (shared by equal + itemized) ---- */
.bill-head { text-align: center; margin-bottom: 16px; }
.bill-title {
  font-size: 14px;
  color: var(--muted);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  word-wrap: break-word;
}
.bill-total {
  font-size: 38px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.02em;
  line-height: 1.1;
  text-shadow: 0 0 24px rgba(255, 184, 77, 0.18);
}
.bill-total em { font-style: normal; font-size: 22px; color: var(--amber); opacity: 0.7; }

.bill-meta {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
  font-size: 11px;
  color: var(--muted);
}
.bill-meta b { color: var(--text); font-weight: 600; }
.bill-meta .sep { color: var(--line); }
.bill-meta .pp b { color: var(--cyan); }

/* ---- Phase 1 shares (equal) ---- */
.shares { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }

.share-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
}
.share-row[data-state="paid"]  { border-left-color: var(--green); opacity: 0.75; }
.share-row[data-state="mine"]  { border-left-color: var(--amber); background: rgba(255, 184, 77, 0.04); }

.share-id { display: flex; align-items: center; gap: 12px; }

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--surface));
  border: 1px solid var(--line);
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}

.share-name { font-size: 13px; color: var(--text); margin-bottom: 2px; }
.share-amount { font-size: 14px; font-weight: 600; color: var(--amber); }
.share-amount span { font-variant-numeric: tabular-nums; }

.paid-tag {
  font-size: 11px;
  color: var(--green);
  border: 1px solid var(--green);
  padding: 4px 10px;
  border-radius: 4px;
  letter-spacing: 0.05em;
  background: rgba(77, 255, 156, 0.06);
}

button { font-family: var(--font); }

.btn-pay {
  font-size: 12px;
  font-weight: 600;
  color: var(--bg);
  background: var(--cyan);
  padding: 8px 18px;
  letter-spacing: 0.08em;
  border: none;
  cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: filter 0.15s;
}
.btn-pay:hover { filter: brightness(1.15); }

/* ---- Itemized claim ---- */
.hint-block {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  padding: 10px 14px;
  background: rgba(0, 210, 255, 0.04);
  border-left: 2px solid var(--cyan);
  margin: 8px 0 14px;
  line-height: 1.5;
}

.items-claim-list { display: flex; flex-direction: column; gap: 6px; }

.claim-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  cursor: pointer;
  font-family: var(--font);
  color: var(--text);
  text-align: left;
  width: 100%;
  transition: border-left-color 0.15s, background 0.15s;
}
.claim-row[data-mine="1"] {
  border-left-color: var(--amber);
  background: rgba(255, 184, 77, 0.06);
}
.claim-row:hover { filter: brightness(1.08); }

.claim-check {
  width: 22px;
  height: 22px;
  border: 2px solid var(--line);
  flex-shrink: 0;
  position: relative;
}
.claim-row[data-mine="1"] .claim-check {
  background: var(--amber);
  border-color: var(--amber);
}
.claim-row[data-mine="1"] .claim-check::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg);
  font-weight: 700;
  font-size: 14px;
}

.claim-info { flex: 1; min-width: 0; }
.claim-name {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 2px;
  word-break: break-word;
}
.claim-meta { font-size: 11px; color: var(--muted); }

.claimers {
  display: flex;
  gap: -4px;
  flex-shrink: 0;
}
.claimer-chip {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--surface);
  background-size: cover;
  background-position: center;
  border: 1px solid var(--cyan);
  margin-left: -6px;
  font-size: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  font-weight: 700;
}

.adjustments {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
  padding: 10px 14px;
  margin-top: 10px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.adjustments .adj-row {
  display: flex;
  justify-content: space-between;
}
.adjustments .adj-row.subtotal { color: var(--text); font-weight: 600; padding-bottom: 4px; }
.adjustments .adj-row.discount { color: var(--green); }
.adjustments .adj-row.total { color: var(--amber); font-weight: 700; padding-top: 6px; border-top: 1px dashed var(--line); margin-top: 4px; }

.my-summary {
  margin-top: 14px;
  padding: 16px;
  background: rgba(255, 184, 77, 0.08);
  border: 1px solid var(--amber);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}
.my-row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
.my-row span { font-size: 12px; color: var(--muted); letter-spacing: 0.08em; }
.my-row strong { font-size: 22px; color: var(--amber); font-weight: 700; }
.my-summary .btn-primary { margin-top: 0; background: var(--amber); }

.all-shares {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 16px;
  font-size: 12px;
}
.all-shares .all-title {
  color: var(--cyan);
  letter-spacing: 0.12em;
  font-size: 10px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.all-shares .person-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.02);
  border-left: 2px solid var(--cyan);
}
.all-shares .person-row[data-paid="1"] {
  border-left-color: var(--green);
  opacity: 0.75;
}
.all-shares .person-name { color: var(--text); }
.all-shares .person-amount { color: var(--amber); font-weight: 600; }
.all-shares .person-amount.paid { color: var(--green); }

/* ---- Pay view ---- */
.pay-view { padding: 16px 20px 24px; }

.pay-amount { text-align: center; padding: 12px 0 16px; }
.pay-amount .label { font-size: 11px; color: var(--muted); letter-spacing: 0.15em; margin-bottom: 6px; }
.pay-amount .value { font-size: 38px; font-weight: 700; color: var(--amber); }
.pay-amount em { font-style: normal; font-size: 22px; opacity: 0.7; }

.qr-wrap { display: flex; flex-direction: column; align-items: center; gap: 14px; margin: 8px 0 16px; }

.qr-frame {
  position: relative;
  padding: 14px;
  background: #ffffff;
  border: 1px solid var(--cyan);
}
#qrCanvas { display: block; }
#qrCanvas img, #qrCanvas canvas { display: block; max-width: 240px; height: auto; }

.pp-info { text-align: center; }
.pp-info .label { font-size: 11px; color: var(--muted); letter-spacing: 0.12em; margin-bottom: 4px; }
.pp-info .value { font-size: 14px; color: var(--cyan); font-weight: 600; letter-spacing: 0.04em; }

.pay-hint {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
  margin: 8px 0 16px;
  line-height: 1.6;
}

/* ---- Owner panel ---- */
.owner-panel {
  position: relative;
  padding: 14px 16px;
  margin-top: 14px;
  background: rgba(255, 184, 77, 0.05);
  border: 1px solid var(--amber);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.owner-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.owner-tag {
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--amber);
  text-transform: uppercase;
  font-weight: 700;
}
.link-btn {
  background: none;
  border: none;
  color: var(--cyan);
  font-family: var(--font);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 8px;
}
.link-btn:hover { color: var(--text); }

.owner-edit {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0;
  border-top: 1px dashed var(--line);
  margin-top: 4px;
}
.owner-edit-actions {
  display: flex;
  gap: 6px;
  margin-top: 4px;
}
.btn-cancel-edit, .btn-save-edit {
  flex: 1;
  padding: 8px;
  font-family: var(--font);
  font-size: 12px;
  cursor: pointer;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
}
.btn-save-edit {
  background: var(--cyan);
  color: var(--bg);
  border-color: var(--cyan);
  font-weight: 700;
}

.btn-cancel-bill {
  display: block;
  width: 100%;
  margin-top: 10px;
  padding: 10px;
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: 0.06em;
  background: transparent;
  border: 1px solid var(--red);
  color: var(--red);
  cursor: pointer;
}
.btn-cancel-bill:hover { background: rgba(255, 77, 106, 0.1); }

.btn-owner {
  background: var(--amber);
  font-size: 11px;
  padding: 6px 10px;
}
.btn-undo {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  font-size: 14px;
  padding: 4px 8px;
  margin-left: 4px;
}

/* Cancelled bill banner */
.cancelled-banner {
  padding: 16px;
  background: rgba(255, 77, 106, 0.1);
  border: 2px dashed var(--red);
  text-align: center;
  margin-bottom: 12px;
}
.cancelled-banner .title { color: var(--red); font-size: 14px; font-weight: 700; letter-spacing: 0.1em; margin-bottom: 4px; }
.cancelled-banner .desc { color: var(--muted); font-size: 11px; }

/* ---- Tabs ---- */
.tabs {
  display: flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.3);
  padding: 4px;
  border: 1px solid var(--line);
  margin-bottom: 12px;
}
.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 10px;
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.tab-btn.active {
  background: rgba(0, 210, 255, 0.12);
  color: var(--cyan);
}

textarea.input {
  font-family: var(--font);
  resize: vertical;
  min-height: 120px;
  white-space: pre;
  overflow-x: auto;
}

[data-parse-status] {
  font-size: 12px;
  padding: 8px 12px;
  margin-top: 8px;
  border-left: 2px solid var(--cyan);
  background: rgba(0, 210, 255, 0.06);
  color: var(--cyan);
}
[data-parse-status][data-state="error"] {
  border-left-color: var(--red);
  background: rgba(255, 77, 106, 0.08);
  color: var(--red);
}

.people-list { display: flex; flex-direction: column; gap: 6px; margin-top: 4px; }
.item-row[data-person] {
  grid-template-columns: 1fr 100px 32px;
}

.ai-warn {
  font-size: 11px;
  color: var(--amber);
  background: rgba(255, 184, 77, 0.06);
  border-left: 2px solid var(--amber);
  padding: 8px 12px;
  margin: 8px 0;
  line-height: 1.5;
}

/* ---- Slip upload ---- */
.slip-upload { display: flex; flex-direction: column; gap: 8px; }

.slip-trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  background: rgba(0, 210, 255, 0.05);
  border: 1px dashed var(--cyan);
  color: var(--cyan);
  cursor: pointer;
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: 0.05em;
  transition: background 0.15s;
}
.slip-trigger:hover { background: rgba(0, 210, 255, 0.12); }
.slip-icon { font-size: 18px; }

.slip-preview {
  position: relative;
  display: inline-block;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.4);
  padding: 4px;
}
.slip-preview img {
  display: block;
  max-width: 100%;
  max-height: 280px;
  object-fit: contain;
}
.slip-remove {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 28px;
  height: 28px;
  background: rgba(255, 77, 106, 0.9);
  border: none;
  color: white;
  font-size: 18px;
  cursor: pointer;
  border-radius: 50%;
}

.error-msg {
  font-size: 12px;
  color: var(--red);
  background: rgba(255, 77, 106, 0.08);
  border-left: 2px solid var(--red);
  padding: 8px 12px;
  line-height: 1.5;
}

/* ---- Footer ---- */
.hud-footer {
  display: flex;
  justify-content: space-between;
  padding: 12px 20px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.1em;
}

/* ---- Misc ---- */
.notice {
  padding: 24px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed var(--line);
}
.notice.error { color: var(--red); border-color: var(--red); }

@media (max-width: 380px) {
  .bill-total, .pay-amount .value { font-size: 30px; }
  #qrCanvas img, #qrCanvas canvas { max-width: 200px; }
  .item-row { grid-template-columns: 1fr 80px 50px 28px; gap: 4px; }
  .item-row .input { padding: 6px 8px; font-size: 12px; }
}