/* ════════════════════════════════════════════════════════════════
   Nudge — Main Stylesheet
   Mobile-first base styles. Media queries in responsive.css.
   ════════════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ─────────────────────────────────────── */
:root {
  --color-primary:    #1a73e8;
  --color-primary-dark: #1557b0;
  --color-success:    #34a853;
  --color-success-dark: #2d8f46;
  --color-danger:     #ea4335;
  --color-danger-dark: #c62828;
  --color-warning:    #fbbc04;
  --color-overdue:    #ea4335;
  --color-unpaid:     #5f6368;
  --color-paid:       #34a853;

  --color-bg:         #ffffff;
  --color-surface:    #f8f9fa;
  --color-border:     #dadce0;
  --color-text:       #202124;
  --color-text-muted: #5f6368;
  --color-text-light: #80868b;

  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, Helvetica, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-xs: 12px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;
  --font-size-xxl: 28px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.15);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.18);

  --transition: 0.15s ease;
}

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

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

h1 { font-size: var(--font-size-xl); font-weight: 600; }
h2 { font-size: var(--font-size-lg); font-weight: 600; }

/* ── Screen Layout ──────────────────────────────────────────────── */
.screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.screen.hidden {
  display: none !important;
}

.page-container {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px;
  width: 100%;
}

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
  text-decoration: none;
  min-height: 44px;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--color-border);
  border-color: var(--color-text-muted);
}

.btn-success {
  background: var(--color-success);
  color: #fff;
  border-color: var(--color-success);
}
.btn-success:hover:not(:disabled) {
  background: var(--color-success-dark);
  border-color: var(--color-success-dark);
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
  border-color: var(--color-danger);
}
.btn-danger:hover:not(:disabled) {
  background: var(--color-danger-dark);
  border-color: var(--color-danger-dark);
}

.btn-warning {
  background: #d97706;
  color: #fff;
  border-color: #d97706;
}
.btn-warning:hover:not(:disabled) {
  background: #b45309;
  border-color: #b45309;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover:not(:disabled) {
  background: rgba(26, 115, 232, 0.08);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--color-surface);
}

.btn-sm {
  padding: 6px 12px;
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn-large {
  padding: 14px 28px;
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
}

/* ── Forms ───────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  min-height: 44px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}

.form-group input.error {
  border-color: var(--color-danger);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.section-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: 0;
  color: var(--color-text);
}

.section-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  margin-bottom: 8px;
}

.toggle-arrow {
  font-size: 14px;
  color: var(--color-text-muted);
  transition: transform 0.2s;
}

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

.section-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.field-error {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  margin-top: 4px;
  min-height: 16px;
}

.form-error {
  background: #fce8e6;
  border: 1px solid #f4b8b4;
  border-radius: var(--radius-sm);
  color: var(--color-danger);
  font-size: var(--font-size-sm);
  padding: 10px 12px;
  margin-bottom: 12px;
}

.form-success {
  background: #e6f4ea;
  border: 1px solid #b3d9be;
  border-radius: var(--radius-sm);
  color: var(--color-success);
  font-size: var(--font-size-sm);
  padding: 10px 12px;
  margin-bottom: 12px;
}

.form-error.hidden,
.form-success.hidden {
  display: none;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.optional {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

.required {
  color: var(--color-danger);
}

/* ── Checkboxes & Radios ─────────────────────────────────────────── */
.checkbox-label,
.radio-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  cursor: pointer;
  font-size: var(--font-size-base);
  border-bottom: 1px solid var(--color-border);
  min-height: 44px;
}

.checkbox-label:last-child,
.radio-label:last-child {
  border-bottom: none;
}

.checkbox-label input[type="checkbox"],
.radio-label input[type="radio"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.radio-group {
  display: flex;
  flex-direction: column;
}

/* ── Page Header ─────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.page-header h1 {
  font-size: var(--font-size-lg);
  flex: 1;
}

.btn-back {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  cursor: pointer;
  padding: 8px 0;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.btn-back:hover {
  text-decoration: underline;
}

/* ── Topbar (Dashboard) ──────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--color-primary);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-brand {
  display: flex;
  align-items: center;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-user {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.85);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: none;
}

.topbar .btn-ghost {
  color: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.4);
}

.label-long { display: none; }
.label-short { display: inline; }
.topbar .btn-ghost:hover {
  background: rgba(255,255,255,0.15);
}

/* ── Analytics Bar ───────────────────────────────────────────────── */
.analytics-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 16px 16px 0;
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px;
  text-align: center;
}

.stat-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
}

.stat-overdue .stat-value { color: var(--color-danger); }
.stat-paid .stat-value { color: var(--color-success); }
.stat-revenue .stat-value { font-size: var(--font-size-base); }

/* ── Tab Bar ─────────────────────────────────────────────────────── */
.tab-bar {
  display: flex;
  padding: 12px 16px 0;
  gap: 0;
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
  border-bottom: 2px solid var(--color-border);
}

.tab {
  background: none;
  border: none;
  padding: 10px 16px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
  min-height: 44px;
}

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

.tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

/* ── Invoice List ────────────────────────────────────────────────── */
.invoice-list {
  max-width: 640px;
  margin: 0 auto;
  padding: 12px 16px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.invoice-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.invoice-card:hover {
  box-shadow: var(--shadow-md);
}

.invoice-card.overdue {
  border-left: 4px solid var(--color-danger);
}

.invoice-card.unpaid {
  border-left: 4px solid var(--color-unpaid);
}

.invoice-card.paid {
  border-left: 4px solid var(--color-success);
  opacity: 0.85;
}

.invoice-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 6px;
}

.invoice-customer {
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--color-text);
}

.invoice-amount {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-text);
}

.invoice-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.invoice-next-reminder {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  margin-bottom: 10px;
}

.invoice-card-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* ── Status Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-unpaid {
  background: #f1f3f4;
  color: var(--color-unpaid);
}

.badge-paid {
  background: #e6f4ea;
  color: var(--color-success);
}

.badge-overdue {
  background: #fce8e6;
  color: var(--color-danger);
}

/* ── Empty State ─────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 16px;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
}

.empty-state.hidden {
  display: none !important;
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-state p {
  font-size: var(--font-size-lg);
  margin-bottom: 16px;
}

.empty-hint {
  font-size: var(--font-size-sm) !important;
  color: var(--color-text-light) !important;
  margin-top: -8px !important;
}

/* ── Welcome Banner ──────────────────────────────────────────────── */
.welcome-banner {
  position: relative;
  background: linear-gradient(135deg, #e8f0fe 0%, #f0f7ff 100%);
  border: 1px solid #c5d8fb;
  border-radius: var(--radius-lg);
  padding: 16px;
  margin-bottom: 16px;
}

.welcome-banner.hidden {
  display: none !important;
}

.welcome-banner-close {
  position: absolute;
  top: 10px;
  right: 12px;
  background: none;
  border: none;
  font-size: 20px;
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 2px 6px;
}

.welcome-banner-close:hover {
  color: var(--color-text);
}

.welcome-banner-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  padding-right: 28px;
}

.welcome-steps {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.welcome-step {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.welcome-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  flex-shrink: 0;
}

.welcome-step-arrow {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.welcome-banner-sub {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 14px;
}

.welcome-checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.welcome-checklist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #fff;
  border: 1px solid #c5d8fb;
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.welcome-checklist-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.welcome-checklist-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: var(--font-size-sm);
}

.welcome-checklist-body strong {
  font-size: var(--font-size-base);
}

.welcome-checklist-body span {
  color: var(--color-text-muted);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .welcome-checklist-item {
    flex-wrap: wrap;
  }
  .welcome-checklist-item .btn-sm {
    width: 100%;
    justify-content: center;
    margin-top: 4px;
  }
}

/* ── Add Invoice Bar ─────────────────────────────────────────────── */
.add-invoice-bar {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 16px 24px;
  width: 100%;
}

/* ── Invoice Detail ──────────────────────────────────────────────── */
.detail-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  min-width: 80px;
}

.detail-value {
  font-size: var(--font-size-base);
  color: var(--color-text);
  text-align: right;
}

.detail-amount {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

/* ── Next Reminder Box ───────────────────────────────────────────── */
.next-reminder-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #e8f0fe;
  border: 1px solid #c5d8fb;
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: var(--font-size-sm);
  color: #1a4fd6;
}

.next-reminder-icon {
  font-size: 20px;
  flex-shrink: 0;
}

/* ── Reminder List ───────────────────────────────────────────────── */
.reminders-section {
  margin-bottom: 16px;
}

.reminder-list {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.reminder-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.reminder-item:last-child {
  border-bottom: none;
}

.reminder-item.sent {
  opacity: 0.6;
}

.reminder-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.reminder-info {
  flex: 1;
}

.reminder-type-label {
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.reminder-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.reminder-status {
  font-size: var(--font-size-xs);
  padding: 2px 8px;
  border-radius: 99px;
  flex-shrink: 0;
}

.reminder-status.not-sent {
  background: #f1f3f4;
  color: var(--color-text-muted);
}

.reminder-status.sent-status {
  background: #e6f4ea;
  color: var(--color-success);
}

/* ── Attachment Card ─────────────────────────────────────────────── */
.detail-section-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #6b7280;
  margin-bottom: 10px;
}
.attachment-file-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.attachment-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  word-break: break-all;
}
.attachment-link:hover { text-decoration: underline; }
.btn-danger-text {
  background: none;
  border: none;
  color: var(--color-danger);
  font-size: 13px;
  padding: 2px 6px;
  cursor: pointer;
  text-decoration: underline;
}
.attachment-upload-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.attachment-hint {
  font-size: 12px;
  color: #9ca3af;
  margin-left: 8px;
}
.attachment-uploading {
  font-size: 13px;
  color: var(--color-primary);
  margin-left: 8px;
}
.btn-sm {
  font-size: 13px;
  padding: 5px 12px;
}

/* ── Detail Actions ──────────────────────────────────────────────── */
.detail-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

/* ── Settings ────────────────────────────────────────────────────── */
.settings-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
}

.settings-info .detail-row {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
}

.settings-reminders-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reminder-info-item {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  padding: 6px 0;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  padding: 4px 0;
}

.toggle-label {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.toggle-label-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.toggle-label-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.toggle-checkbox {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch {
  position: relative;
  flex-shrink: 0;
  width: 44px;
  height: 24px;
  background: var(--color-border);
  border-radius: 12px;
  transition: background 0.2s;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}

.toggle-checkbox:checked + .toggle-switch {
  background: var(--color-primary);
}

.toggle-checkbox:checked + .toggle-switch::after {
  transform: translateX(20px);
}

.settings-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.settings-link-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 4px;
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--font-size-base);
  border-bottom: 1px solid var(--color-border);
}
.settings-link-row:last-child {
  border-bottom: none;
}
.settings-link-row:hover {
  color: var(--color-primary);
}
.settings-link-arrow {
  color: var(--color-text-muted);
  font-size: 14px;
}

.danger-zone {
  border-color: #f4b8b4;
  background: #fff8f7;
}

.danger-title {
  color: var(--color-danger);
}

/* ── Onboarding Screen ───────────────────────────────────────────── */
.onboarding-container {
  max-width: 480px;
  margin: 0 auto;
  padding: 40px 24px 48px;
  text-align: center;
  flex: 1;
}

.onboarding-logo {
  margin-bottom: 24px;
  text-align: center;
}

.logo-img {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  display: block;
  margin: 0 auto;
}

.logo-img--lg {
  width: 100px;
  height: 100px;
  border-radius: 22px;
}

.logo-img--topbar {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  margin: 0;
  display: inline-block;
  vertical-align: middle;
}

.onboarding-headline {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}

.onboarding-sub {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.how-it-works {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 24px;
}

.how-it-works h2 {
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.step-number {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-base);
}

.step-text {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-align: center;
}

.step-arrow {
  font-size: 20px;
  color: var(--color-text-muted);
}

.onboarding-features {
  margin-bottom: 28px;
  text-align: left;
  display: inline-block;
}

.feature-item {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  padding: 5px 0;
}

.feature-item::before {
  color: var(--color-success);
  font-weight: 700;
}

.onboarding-login {
  margin-top: 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ── Auth Screen ─────────────────────────────────────────────────── */
.auth-container {
  max-width: 420px;
  margin: 0 auto;
  padding: 32px 24px 48px;
  flex: 1;
}

.auth-logo {
  margin-bottom: 20px;
  text-align: center;
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 20px;
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  padding: 12px;
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
  min-height: 44px;
}

.auth-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

.auth-form h2 {
  font-size: var(--font-size-lg);
  margin-bottom: 16px;
  color: var(--color-text);
}

.auth-form.hidden {
  display: none;
}

.auth-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.auth-switch {
  margin-top: 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-align: center;
}

.auth-legal {
  margin-top: 24px;
  font-size: 12px;
  color: var(--color-text-muted);
  text-align: center;
}

.auth-legal a {
  color: var(--color-text-muted);
  text-decoration: underline;
}

/* ── Toast Notification ──────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  max-width: 360px;
  text-align: center;
  transition: opacity 0.3s ease;
}

.toast.success {
  background: var(--color-success);
}

.toast.error {
  background: var(--color-danger);
}

.toast.hidden {
  display: none;
}

/* ── Confirmation Modal ──────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 16px;
}

.modal-overlay.hidden {
  display: none !important;
}

.modal {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 380px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

.modal-title {
  font-size: var(--font-size-lg);
  margin-bottom: 8px;
}

.modal-message {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}

.modal-extra-fields {
  margin-bottom: 16px;
}

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

@media (max-width: 480px) {
  .modal-actions {
    flex-direction: column;
  }
  .modal-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ── Loading spinner ─────────────────────────────────────────────── */
.loading {
  text-align: center;
  padding: 32px;
  color: var(--color-text-muted);
}

.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin-bottom: 8px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Utility ─────────────────────────────────────────────────────── */
.hidden {
  display: none !important;
}

.text-muted {
  color: var(--color-text-muted);
}

.text-center {
  text-align: center;
}

.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }

/* ── Customer List ───────────────────────────────────────────────── */
.customer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 80px;
}

.customer-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.customer-card-main {
  flex: 1;
  cursor: pointer;
  min-width: 0;
}

.customer-card-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
}

.customer-card-email {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.customer-card-phone {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.customer-card-stats {
  margin-top: 6px;
}

.customer-badge {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
}

.badge-unpaid {
  background: #fce8e6;
  color: var(--color-danger);
}

.badge-clear {
  background: #e6f4ea;
  color: var(--color-success);
}

.customer-card-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-left: 12px;
  flex-shrink: 0;
}

/* ── Customer Invoice List (detail screen) ───────────────────────── */
.customer-invoice-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 8px;
  padding-bottom: 40px;
}

.customer-invoice-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.cir-number {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.cir-date {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.cir-right {
  text-align: right;
}

.cir-amount {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}

/* ── Notes & Tags display ────────────────────────────────────────── */
.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.tag-pill {
  display: inline-block;
  background: #e8f0fe;
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: lowercase;
}

/* ── Form textarea ───────────────────────────────────────────────── */
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background: var(--color-bg);
  resize: vertical;
  line-height: 1.5;
  transition: border-color var(--transition);
}

textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* ── Billing Alert Banner (Dashboard) ───────────────────────────── */
.billing-alert-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.billing-alert-banner.hidden {
  display: none;
}

.billing-alert-danger {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

.billing-alert-warning {
  background: #fef9c3;
  color: #854d0e;
  border: 1px solid #fde047;
}

.billing-alert-banner span {
  flex: 1;
}

.billing-alert-banner .btn {
  flex-shrink: 0;
  white-space: nowrap;
}

.billing-alert-danger .btn {
  background: #991b1b;
  color: #fff;
  border-color: #991b1b;
}

.billing-alert-warning .btn {
  background: #854d0e;
  color: #fff;
  border-color: #854d0e;
}

.billing-alert-dismiss {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  opacity: 0.6;
  padding: 0 4px;
  flex-shrink: 0;
}

.billing-alert-dismiss:hover {
  opacity: 1;
}

/* ── Billing Status (Settings) ───────────────────────────────────── */
.billing-status-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 12px;
}

.billing-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}

.billing-status-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.billing-status-value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.billing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

/* ── Paywall Screen ───────────────────────────────────────────────── */
.paywall-container {
  max-width: 560px;
  margin: 0 auto;
  padding: 40px 20px 60px;
  text-align: center;
}

.paywall-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.paywall-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.paywall-sub {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.5;
}

.paywall-plans {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.plan-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  width: 220px;
  text-align: left;
  position: relative;
}

.plan-card-featured {
  border-color: var(--color-primary);
}

.plan-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

.plan-name {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.plan-price {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
  line-height: 1;
}

.plan-per {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-text-muted);
}

.plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}

.plan-features li {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  padding: 3px 0;
}

.btn-block {
  width: 100%;
}

.paywall-footer {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ── Settings subsection title ─────────────────────────────────── */

.subsection-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 4px;
}

/* ── Small button variant ──────────────────────────────────────── */

.btn-sm {
  padding: 6px 12px;
  font-size: var(--font-size-sm);
}

/* ── Reminder template step accordion ─────────────────────────── */

.template-step {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 8px;
  overflow: hidden;
}

.template-step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  cursor: pointer;
  background: var(--color-surface);
  user-select: none;
}

.template-step-header:hover {
  background: #f0f1f3;
}

.template-step-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.template-step-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

.template-step-tone {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.template-step-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.template-step-badge {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 500;
}

.badge-default {
  background: #e8eaed;
  color: var(--color-text-muted);
}

.badge-custom {
  background: #fef3c7;
  color: #92400e;
}

.template-step-chevron {
  font-size: 12px;
  color: var(--color-text-muted);
}

.template-step-body {
  padding: 14px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.template-step-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin: 0 0 12px;
}

/* ── Native upgrade screen (store-compliant, no pricing) ────────── */

.native-upgrade-container {
  max-width: 360px;
  margin: 0 auto;
  padding: 60px 24px 48px;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.native-upgrade-title {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.native-upgrade-sub {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
}

.native-upgrade-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: 16px;
}

/* ── Pro feature lock banner ────────────────────────────────────── */

.tmpl-pro-lock {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #f0f4ff;
  border: 1px solid #c7d2fe;
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.tmpl-pro-lock span {
  flex: 1;
}

/* ── Trial warning banner ───────────────────────────────────────── */

.trial-banner {
  position: sticky;
  top: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: #f59e0b;
  color: #1c1917;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.trial-banner--urgent {
  background: #ef4444;
  color: #fff;
}

.trial-banner span {
  flex: 1;
}

.trial-banner-upgrade {
  background: rgba(0,0,0,0.15);
  border: 1px solid rgba(0,0,0,0.2);
  color: inherit;
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
}

.trial-banner-dismiss {
  background: none;
  border: none;
  color: inherit;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 0 2px;
  opacity: 0.7;
}

.trial-banner-dismiss:hover {
  opacity: 1;
}

/* ── Signup trial callout ───────────────────────────────────────── */

.trial-callout {
  font-size: var(--font-size-sm);
  color: var(--color-success);
  text-align: center;
  margin: -4px 0 10px;
}

/* ── Billing usage meters ───────────────────────────────────────── */

.billing-usage {
  margin-top: 16px;
}

.usage-meter {
  margin-bottom: 4px;
}

.usage-meter-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.usage-meter-bar {
  height: 6px;
  background: #e8eaed;
  border-radius: 3px;
  overflow: hidden;
}

.usage-meter-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}

.usage-warn {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin: 4px 0 0;
}

.usage-warn--danger {
  color: var(--color-danger);
  font-weight: 500;
}