/* ================================================================
   app.css — MoriManual Receipt Builder
   Design: Verge-inspired dark-first system
   Fonts: Bebas Neue (display), DM Sans (UI), Space Mono (labels)
   Palette: Canvas #131313, Mint #3cffd0, Ultraviolet #5200ff
   Do NOT change ids or structural flex/grid properties used by layout.
   ================================================================ */

/* ── Design tokens ───────────────────────────────────────────── */
:root {
  /* Surfaces */
  --canvas: #131313;
  --surface: #1e1e1e;
  --surface-raised: #2d2d2d;
  --surface-overlay: rgba(255, 255, 255, 0.04);

  /* Brand accents */
  --mint: #3cffd0;
  --mint-dim: #309875;
  --mint-subtle: rgba(60, 255, 208, 0.08);
  --ultraviolet: #5200ff;
  --ultraviolet-dim: #3d00bf;

  /* Text */
  --text-primary: #ffffff;
  --text-secondary: #949494;
  --text-muted: #e9e9e9;
  --text-inverted: #131313;

  /* Borders */
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(255, 255, 255, 0.25);
  --border-mint: #309875;

  /* Feedback */
  --error: #ff4d6a;
  --success: #3cffd0;
  --danger: #dc2626;
  --danger-hover: #b91c1c;

  /* Links */
  --link-hover: #3860be;

  /* Typography */
  --font-display: 'Bebas Neue', Impact, Helvetica, sans-serif;
  --font-body: 'DM Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Mono', 'Courier New', Courier, monospace;

  /* Spacing base: 8px */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 20px;
  --radius-pill: 24px;
  --radius-full: 50%;

  /* Transitions */
  --ease-fast: 150ms ease;
  --ease-normal: 180ms ease;
}

/* ── Light mode tokens ───────────────────────────────────────── */
[data-theme="light"] {
  --canvas: #f5f5f3;
  --surface: #ffffff;
  --surface-raised: #f0efed;
  --surface-overlay: rgba(0, 0, 0, 0.03);

  --mint: #00A699;
  --mint-dim: #008f84;
  --mint-subtle: rgba(0, 166, 153, 0.08);
  --ultraviolet: #5200ff;
  --ultraviolet-dim: #3d00bf;

  --text-primary: #131313;
  --text-secondary: #6b6b6b;
  --text-muted: #3d3d3d;
  --text-inverted: #ffffff;

  --border: rgba(0, 0, 0, 0.12);
  --border-strong: rgba(0, 0, 0, 0.25);
  --border-mint: #00A699;

  --error: #d93251;
  --success: #00A699;
  --danger: #c81e1e;
  --danger-hover: #9f1b1b;

  --link-hover: #3860be;
}

/* ── Reset & base ────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

[hidden] {
  display: none !important;
}

html, body {
  height: 100%;
  font-family: var(--font-body);
  -webkit-text-size-adjust: 100%;
  background: var(--canvas);
  color: var(--text-primary);
  transition: background var(--ease-normal), color var(--ease-normal);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* ── Utility ─────────────────────────────────────────────────── */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

/* ── View switching ──────────────────────────────────────────── */
.view {
  display: none;
  width: 100%;
}

.view--active {
  display: block;
}

/* ── PIN screen ──────────────────────────────────────────────── */
#view-pin {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  background: var(--canvas);
}

.pin-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-6);
  width: 100%;
  max-width: 360px;
  padding: var(--sp-8) var(--sp-6);
}

.pin-screen__logo {
  display: flex;
  justify-content: center;
}

.pin-screen__logo-img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: var(--radius-lg);
}

.pin-screen__title {
  text-align: center;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 400;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.pin-screen__subtitle {
  text-align: center;
  line-height: 1.6;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.pin-mode {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
}

/* PIN dots */
.pin-dots {
  display: flex;
  gap: var(--sp-4);
  justify-content: center;
  align-items: center;
}

.pin-dot {
  display: block;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  border: 2px solid var(--mint);
  transition: background-color var(--ease-fast);
}

.pin-dot--filled {
  background-color: var(--mint);
}

@keyframes pin-shake {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-8px); }
  40%      { transform: translateX(8px); }
  60%      { transform: translateX(-8px); }
  80%      { transform: translateX(8px); }
}

.pin-dots--shake {
  animation: pin-shake 0.4s ease;
}

.pin-error {
  text-align: center;
  color: var(--error);
  font-size: 0.8rem;
  line-height: 1.5;
}

/* PIN keypad */
.pin-keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
  width: 100%;
  max-width: 280px;
}

.pin-key {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-full);
  font-size: 1.5rem;
  font-family: var(--font-body);
  font-weight: 500;
  cursor: pointer;
  background: var(--surface);
  color: var(--text-primary);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  transition: background var(--ease-fast), border-color var(--ease-fast);
}

.pin-key:hover {
  border-color: var(--mint);
  background: var(--mint-subtle);
}

.pin-key:active {
  background: var(--mint);
  color: var(--text-inverted);
  border-color: var(--mint);
}

.pin-key--empty,
.pin-key[disabled] {
  cursor: default;
  pointer-events: none;
  opacity: 0;
}

.pin-key--delete {
  font-size: 1.2rem;
  border-color: transparent;
  background: transparent;
}

.pin-key--delete:hover {
  border-color: transparent;
  background: var(--surface-overlay);
}

/* ── App shell ───────────────────────────────────────────────── */
.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* ── Navigation bar ──────────────────────────────────────────── */
.app-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-4);
  flex-shrink: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.app-nav__brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

.app-nav__logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.app-nav__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.app-nav__tabs {
  display: flex;
  gap: 2px;
  flex: 1;
  justify-content: center;
}

.nav-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--sp-2) var(--sp-4);
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-md);
  line-height: 1.2;
  -webkit-tap-highlight-color: transparent;
  transition: color var(--ease-fast);
  color: var(--text-secondary);
  position: relative;
}

.nav-tab:hover {
  color: var(--link-hover);
}

.nav-tab--active {
  color: var(--mint);
}

.nav-tab--active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--sp-2);
  right: var(--sp-2);
  height: 2px;
  background: var(--mint);
  border-radius: 1px;
}

.nav-tab__icon {
  font-size: 1.1rem;
}

.nav-tab__label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  text-align: center;
  font-weight: 700;
}

.nav-tab__label span[lang="zh-Hant"] {
  font-family: var(--font-body);
  letter-spacing: 0;
  text-transform: none;
  font-weight: 400;
  font-size: 0.6rem;
}

.app-nav__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-shrink: 0;
}

/* Theme toggle */
.app-nav__theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: transparent;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: border-color var(--ease-fast), background var(--ease-fast);
  color: var(--text-secondary);
}

.app-nav__theme-toggle:hover {
  border-color: var(--mint);
  background: var(--mint-subtle);
}

/* Sun/moon icon via CSS */
.theme-toggle__icon {
  display: block;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--text-secondary);
  position: relative;
  transition: background var(--ease-fast), box-shadow var(--ease-fast);
}

/* Dark mode: show moon (crescent via box-shadow) */
[data-theme="dark"] .theme-toggle__icon {
  background: transparent;
  box-shadow: inset -6px -2px 0 0 var(--text-secondary);
}

/* Light mode: show sun (filled circle) */
[data-theme="light"] .theme-toggle__icon {
  width: 16px;
  height: 16px;
  background: var(--text-secondary);
  box-shadow: 0 0 0 3px var(--surface), 0 0 0 4px var(--text-secondary);
}

.app-nav__lock {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-pill);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  color: var(--text-secondary);
  transition: border-color var(--ease-fast), color var(--ease-fast), background var(--ease-fast);
}

.app-nav__lock:hover {
  border-color: var(--mint);
  color: var(--mint);
  background: var(--mint-subtle);
}

.app-nav__lock-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
}

/* ── Mobile navigation — bottom tab bar ─────────────────────── */
@media (max-width: 660px) {
  .app-nav {
    padding: var(--sp-2) var(--sp-3);
  }

  .app-nav__tabs {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 500;
    display: flex;
    gap: 0;
    justify-content: stretch;
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--sp-2) 0 calc(var(--sp-2) + env(safe-area-inset-bottom, 0px));
  }

  .nav-tab {
    flex: 1;
    padding: var(--sp-1) var(--sp-1);
    border-radius: 0;
    gap: 1px;
  }

  .nav-tab--active::after {
    top: 0;
    bottom: auto;
    left: var(--sp-3);
    right: var(--sp-3);
    border-radius: 0 0 1px 1px;
  }

  .nav-tab__icon {
    font-size: 1.25rem;
  }

  .nav-tab__label {
    font-size: 0.5rem;
    letter-spacing: 0.5px;
  }

  .app-nav__name {
    font-size: 1.1rem;
  }

  .app-nav__actions {
    margin-left: auto;
  }

  .app-shell {
    padding-bottom: calc(60px + env(safe-area-inset-bottom, 0px));
  }

  .panel-header {
    flex-wrap: wrap;
  }

  .receipt-preview-panel .panel-header {
    gap: var(--sp-2);
  }

  .receipt-layout {
    padding: 0 var(--sp-3) var(--sp-6);
  }

  .patients-layout,
  .clients-layout,
  .settings-layout {
    padding: 0 var(--sp-3) var(--sp-6);
  }
}

/* ── Panels ──────────────────────────────────────────────────── */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: var(--sp-3) 0;
}

.panel-header__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.panel-header__title span[lang="zh-Hant"] {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
  color: var(--text-secondary);
  margin-left: var(--sp-2);
}

/* ── Forms ────────────────────────────────────────────────────── */
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-secondary);
}

.form-label span[lang="zh-Hant"] {
  font-family: var(--font-body);
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

.form-label__required {
  color: var(--error);
  margin-left: 2px;
}

.form-input {
  width: 100%;
  padding: 10px var(--sp-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--text-primary);
  -webkit-appearance: none;
  appearance: none;
  transition: border-color var(--ease-fast);
}

.form-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

.form-input:focus {
  outline: none;
  border-color: var(--mint);
}

select.form-input {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23949494' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.form-input--readonly {
  opacity: 0.6;
  cursor: default;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.form-error {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--error);
}

.form-actions {
  padding-top: var(--sp-2);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 10px var(--sp-6);
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  text-align: center;
  white-space: nowrap;
  transition: background var(--ease-normal), color var(--ease-normal), border-color var(--ease-normal), opacity var(--ease-normal);
}

.btn span[lang="zh-Hant"] {
  font-family: var(--font-body);
  letter-spacing: 0;
  text-transform: none;
  font-weight: 500;
  font-size: 0.7rem;
}

.btn:disabled {
  opacity: 0.35;
  cursor: default;
}

.btn--full {
  width: 100%;
}

.btn--small {
  padding: 6px var(--sp-3);
  font-size: 0.65rem;
}

/* Primary — Jelly Mint Pill */
.btn--primary {
  background: var(--mint);
  color: var(--text-inverted);
  border: none;
}

.btn--primary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-inverted);
  box-shadow: 0 0 0 1px #c2c2c2;
}

[data-theme="dark"] .btn--primary:hover:not(:disabled) {
  color: #000;
}

[data-theme="light"] .btn--primary:hover:not(:disabled) {
  background: var(--mint-dim);
  color: #fff;
  box-shadow: none;
}

.btn--primary:active:not(:disabled) {
  opacity: 0.7;
}

/* Secondary — Dark Slate Pill */
.btn--secondary {
  background: var(--surface-raised);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn--secondary:hover:not(:disabled) {
  border-color: var(--mint);
  color: var(--mint);
  background: var(--mint-subtle);
}

/* ── Read-only banner ────────────────────────────────────────── */
.readonly-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: 10px var(--sp-3);
  border-radius: var(--radius-md);
  margin-top: var(--sp-3);
  font-size: 0.8rem;
  background: var(--ultraviolet-dim);
  color: #fff;
  border: 1px solid var(--ultraviolet);
}

[data-theme="light"] .readonly-banner {
  background: rgba(82, 0, 255, 0.08);
  color: var(--ultraviolet);
  border-color: var(--ultraviolet-dim);
}
[data-theme="light"] .client-card {
  background: rgba(0, 166, 153, 0.04);
}

/* ── Receipt layout ──────────────────────────────────────────── */
.receipt-layout {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-6);
  padding: 0 var(--sp-4) var(--sp-8);
  align-items: start;
}

@media (max-width: 1080px) {
  .receipt-layout {
    grid-template-columns: 1fr;
  }
}

.receipt-form-panel,
.receipt-preview-panel {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.receipt-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

/* ── Patients layout ─────────────────────────────────────────── */
.patients-layout {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  padding: 0 var(--sp-4) var(--sp-8);
}

.patients-search {
  width: 100%;
}

.patients-search__input {
  width: 100%;
}

.patients-empty {
  text-align: center;
  padding: var(--sp-10) 0;
  line-height: 1.6;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.patient-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-bottom: var(--sp-6);
}

.patient-group__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
}

.patient-group__name {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.patient-group__summary {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
}

.patients-table-container {
  overflow-x: auto;
}

/* ── Settings layout ─────────────────────────────────────────── */
.settings-layout {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  padding: 0 var(--sp-4) var(--sp-8);
  max-width: 600px;
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
}

.settings-section__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--mint);
  margin-bottom: var(--sp-1);
}

.settings-section__title span[lang="zh-Hant"] {
  font-family: var(--font-body);
  letter-spacing: 0;
  text-transform: none;
  font-weight: 400;
  color: var(--text-secondary);
}

.form-textarea {
  resize: vertical;
  min-height: 72px;
  font-family: var(--font-body);
  line-height: 1.5;
}

.settings-saved-msg {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--success);
  margin-top: var(--sp-2);
}

/* ── Client picker dropdown ──────────────────────────────────── */
/* ── Batch section ───────────────────────────────────────────── */
.batch-section {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
  margin-top: var(--sp-3);
}

.batch-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

.batch-section__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-primary);
}

.batch-section__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.batch-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.batch-table th {
  padding: 6px var(--sp-2);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  text-align: left;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.batch-table td {
  padding: 6px var(--sp-1);
}

.batch-table .form-input {
  padding: 6px var(--sp-2);
  font-size: 0.85rem;
}

.batch-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.batch-result {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--success);
}

.btn--remove-row {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: var(--sp-1) var(--sp-2);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--ease-fast), color var(--ease-fast), background var(--ease-fast);
}

.btn--remove-row:hover {
  border-color: var(--error);
  color: var(--error);
  background: rgba(255, 77, 106, 0.08);
}

/* ── Clients layout ──────────────────────────────────────────── */
.clients-layout {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  padding: 0 var(--sp-4) var(--sp-8);
}

.client-form-section {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
}

.client-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.clients-search {
  width: 100%;
}

.clients-list-container {
  overflow-x: auto;
}

.clients-empty {
  text-align: center;
  padding: var(--sp-10) 0;
  line-height: 1.6;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.form-actions--inline {
  display: flex;
  gap: var(--sp-2);
}

/* ── Scrollbar styling (dark mode) ───────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ── Focus rings ─────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

/* ── Selection ───────────────────────────────────────────────── */
::selection {
  background: var(--mint);
  color: var(--text-inverted);
}

/* ── Client form tab bar ──────────────────────────────────────── */
.client-tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--sp-4);
}
.client-tab {
  padding: var(--sp-2) var(--sp-3);
  font-size: 0.7rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-bottom: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  cursor: pointer;
  background: transparent;
  color: var(--text-secondary);
  margin-bottom: -1px;
  position: relative;
  transition: background var(--ease-fast), color var(--ease-fast), border-color var(--ease-fast);
}
.client-tab--active {
  background: var(--surface);
  border-color: var(--border);
  color: var(--mint);
}
.client-tab__dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--mint);
  margin-left: 5px;
  vertical-align: middle;
}
.client-tab-panel { display: none; }
.client-tab-panel--active { display: block; }

.client-form-section-title {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mint);
  margin: var(--sp-4) 0 var(--sp-2);
  padding-bottom: var(--sp-1);
  border-bottom: 1px solid var(--mint-subtle);
}
.client-form-section-title:first-child { margin-top: 0; }

/* ── Receipt picker ───────────────────────────────────────────── */
.picker-wrap {
  display: flex;
  gap: var(--sp-2);
  align-items: flex-start;
  position: relative;
}
.picker-input-wrap {
  flex: 1;
  position: relative;
}
.picker-input {
  width: 100%;
  box-sizing: border-box;
}
.picker-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 200; /* above receipt layout grid, below any modal */
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  max-height: 200px;
  overflow-y: auto;
}
.picker-dropdown[hidden] { display: none !important; }
.picker-option {
  padding: var(--sp-2) var(--sp-3);
  font-size: 0.8rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.picker-option:last-child { border-bottom: none; }
.picker-option:hover,
.picker-option--focused { background: var(--mint-subtle); transition: background var(--ease-fast); }
.picker-option__meta {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}
.picker-empty {
  padding: var(--sp-2) var(--sp-3);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ── Client summary card ──────────────────────────────────────── */
.client-card {
  background: rgba(60, 255, 208, 0.04);
  border: 1px solid var(--border-mint);
  border-radius: 6px;
  padding: var(--sp-3) var(--sp-4);
  margin-top: var(--sp-2);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-1) var(--sp-5);
}
.client-card[hidden] { display: none !important; }
.client-card__name {
  grid-column: 1 / -1;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--sp-1);
}
.client-card__nickname {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-left: var(--sp-1);
}
.client-card__row {
  display: flex;
  gap: var(--sp-1);
  align-items: baseline;
  font-size: 0.75rem;
}
.client-card__label {
  font-size: 0.65rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  white-space: nowrap;
}
.client-card__value { color: var(--text-muted); }
.client-card__value--accent { color: var(--mint); }
.client-card__hkid {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.client-card__hkid-masked { color: var(--text-secondary); }
.client-card__row--full { grid-column: 1 / -1; }

/* ── Auth screen ─────────────────────────────────────────── */
.auth-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  gap: 1rem;
  padding: 2rem;
}

.auth-screen__logo-img {
  width: 72px;
  height: 72px;
  object-fit: contain;
}

.auth-screen__title {
  font-family: var(--font-display, 'Bebas Neue', sans-serif);
  font-size: 2rem;
  margin: 0;
  letter-spacing: 0.05em;
}

.auth-screen__subtitle {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.875rem;
}

.btn-google-signin {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--ease-fast), border-color var(--ease-fast);
  margin-top: 0.5rem;
}

.btn-google-signin:hover {
  background: var(--surface-raised);
  border-color: var(--mint);
}

.btn-google-signin__icon {
  flex-shrink: 0;
}

.auth-error {
  color: var(--error);
  font-size: 0.8125rem;
  text-align: center;
  max-width: 280px;
}

/* ── Migration banner ────────────────────────────────────── */
.migration-banner {
  background: var(--mint-subtle);
  border: 1px solid var(--border-mint);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin: 0.75rem 1rem 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
}

.migration-banner__text {
  flex: 1;
  margin: 0;
}

.migration-banner__actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* ── Save toast ──────────────────────────────────────────── */
.save-toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--success);
  color: var(--text-inverted);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: 9999;
  pointer-events: none;
  white-space: nowrap;
}

.save-toast--error {
  background: var(--error);
  color: #fff;
}

/* ── Date chip ───────────────────────────────────────────── */
.date-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  margin-left: 0.5rem;
  background: var(--mint-subtle);
  border: 1px solid var(--border-mint);
  border-radius: var(--radius-pill);
  color: var(--mint);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  vertical-align: middle;
  transition: background var(--ease-fast), color var(--ease-fast);
}

.date-chip:hover {
  background: var(--mint);
  color: var(--text-inverted);
}

/* ── Form label hint ─────────────────────────────────────── */
.form-label__hint {
  font-size: 11px;
  font-weight: 400;
  opacity: 0.6;
  font-style: italic;
}

/* ── Display-options toggle ──────────────────────────────── */
.form-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  color: inherit;
}

.form-toggle__icon {
  font-size: 10px;
  transition: transform var(--ease-fast);
  color: var(--text-secondary);
}

.form-toggle[aria-expanded="true"] .form-toggle__icon {
  transform: rotate(90deg);
}

/* ── Display-options checkboxes ──────────────────────────── */
.form-checkbox-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 4px;
}

.form-checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  cursor: pointer;
}

/* ── Form hint ───────────────────────────────────────────── */
.form-hint {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin: 0.25rem 0 0;
  line-height: 1.4;
}

/* ── PDF action buttons — icon-only on mobile ────────────── */
.btn-pdf-action__icon {
  display: none;
}

@media (max-width: 660px) {
  .btn-pdf-action__icon {
    display: block;
  }
  .btn-pdf-action__text {
    display: none;
  }
  .btn-pdf-action {
    padding: 6px 8px;
    min-width: 0;
  }
}

/* ── Form warning ────────────────────────────────────────── */
.form-warning {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #e68a00;
  padding: 4px 0;
}

[data-theme="dark"] .form-warning {
  color: #ffb300;
}

/* ── Mobile receipt preview scaling ──────────────────────── */
@media (max-width: 660px) {
  .receipt-preview-panel {
    overflow-x: hidden;
  }
  #receipt-preview {
    transform-origin: top left;
    transform: scale(var(--preview-scale, 1));
  }
}