/* ==========================================================================
   ReceiptNext — PWA Expense Tracker Stylesheet
   "The Terminal Mint" dark palette | Mobile-first responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors — "The Terminal Mint" Dark Palette */
  --color-primary: #10b981;
  --color-primary-hover: #34d399;
  --color-primary-light: #064e3b;
  --color-primary-dark: #047857;

  --color-secondary: #334155;
  --color-secondary-hover: #475569;

  --color-bg: #0f172a;
  --color-card: #1e293b;
  --color-text: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-text-light: #64748b;

  --color-border: #334155;
  --color-border-focus: #10b981;

  --color-danger: #ef4444;
  --color-danger-hover: #f87171;
  --color-danger-light: #450a0a;

  --color-success: #10b981;
  --color-warning: #f59e0b;

  --color-open-bg: #064e3b;
  --color-open-text: #6ee7b7;
  --color-closed-bg: #334155;
  --color-closed-text: #cbd5e1;

  /* Shadows — more pronounced on dark bg */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 10px 25px rgba(0, 0, 0, 0.4);

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Layout */
  --max-width: 1024px;
  --header-height: 60px;

  /* Z-index layers */
  --z-base: 1;
  --z-dropdown: 100;
  --z-modal: 200;
  --z-toast: 300;
}

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

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

/* --------------------------------------------------------------------------
   2. Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--leading-tight);
  font-weight: var(--font-semibold);
  color: var(--color-text);
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }

p {
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

small, .text-sm {
  font-size: var(--text-sm);
}

.text-xs {
  font-size: var(--text-xs);
}

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

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

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

.font-medium {
  font-weight: var(--font-medium);
}

.font-semibold {
  font-weight: var(--font-semibold);
}

.font-bold {
  font-weight: var(--font-bold);
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   3. Layout Helpers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

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

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

.items-start {
  align-items: flex-start;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3 { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.px-3 { padding-left: var(--space-3); padding-right: var(--space-3); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }

.w-full {
  width: 100%;
}

.hidden {
  display: none;
}

/* --------------------------------------------------------------------------
   4. App Shell (Header, Main)
   -------------------------------------------------------------------------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--space-4);
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.app-header__title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-secondary);
}

.app-header__title span {
  color: var(--color-primary);
}

.app-main {
  padding: var(--space-6) var(--space-4) var(--space-10);
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100dvh - var(--header-height));
}

.main-content {
  padding: var(--space-5) var(--space-4) var(--space-10);
}

/* --------------------------------------------------------------------------
   5. Cards
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card--clickable {
  cursor: pointer;
}

.card--clickable:active {
  transform: scale(0.99);
}

.card__body {
  padding: var(--space-4);
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.card__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

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

/* Login card — centered single-column */
.login-card {
  width: 100%;
  max-width: 420px;
  margin: var(--space-12) auto;
  padding: var(--space-10) var(--space-8);
  border-radius: var(--radius-xl);
}

.login-card__logo {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.login-card__logo svg {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
}

.login-card__heading {
  text-align: center;
  margin-bottom: var(--space-2);
}

.login-card__subheading {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-6);
}

/* --------------------------------------------------------------------------
   6. Event Cards Grid
   -------------------------------------------------------------------------- */
.events-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.event-card {
  position: relative;
}

.event-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
}

.event-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.event-card__amount {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  margin-top: var(--space-2);
}

.event-card__description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.event-card__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

/* --------------------------------------------------------------------------
   7. Status Badges
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 10px;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  line-height: 1.4;
  border-radius: var(--radius-full);
  white-space: nowrap;
  user-select: none;
}

.badge--open {
  background-color: var(--color-open-bg);
  color: var(--color-open-text);
}

.badge--closed {
  background-color: var(--color-closed-bg);
  color: var(--color-closed-text);
}

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

.badge--approved {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.badge--rejected {
  background-color: var(--color-danger-light);
  color: #991b1b;
}

/* --------------------------------------------------------------------------
   8. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  line-height: 1.4;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled,
.btn--disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Primary */
.btn--primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

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

.btn--primary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Secondary */
.btn--secondary {
  background-color: var(--color-card);
  color: var(--color-secondary);
  border-color: var(--color-border);
}

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

.btn--secondary:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Danger */
.btn--danger {
  background-color: var(--color-danger);
  color: #ffffff;
  border-color: var(--color-danger);
}

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

.btn--danger:focus-visible {
  outline: 2px solid var(--color-danger);
  outline-offset: 2px;
}

/* Ghost (no background, subtle border) */
.btn--ghost {
  background-color: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}

.btn--ghost:hover:not(:disabled) {
  background-color: var(--color-bg);
  color: var(--color-text);
}

/* Sizes */
.btn--sm {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
}

.btn--lg {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
}

/* Full width on mobile */
.btn--block {
  width: 100%;
}

/* Icon-only button */
.btn--icon {
  padding: var(--space-2);
  min-width: 36px;
  min-height: 36px;
}

/* Floating Action Button */
.fab {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-dropdown);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background-color: var(--color-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.fab:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

.fab:active {
  transform: scale(0.95);
}

.fab svg {
  width: 24px;
  height: 24px;
}

/* --------------------------------------------------------------------------
   9. Form Inputs
   -------------------------------------------------------------------------- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-label--required::after {
  content: " *";
  color: var(--color-danger);
}

/* Bare input/select/textarea inside form-group get the same styling */
.form-group input:not([type="radio"]):not([type="checkbox"]):not([type="file"]):not([type="hidden"]),
.form-group select,
.form-group textarea {
  display: block;
  width: 100%;
  padding: var(--space-4) var(--space-4);
  font-family: inherit;
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
  box-sizing: border-box;
}

.form-group input:not([type="radio"]):not([type="checkbox"]):not([type="file"]):not([type="hidden"])::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-light);
  font-size: var(--text-base);
}

/* Also keep the class-based selectors for explicit usage */
.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: var(--space-4) var(--space-4);
  font-family: inherit;
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
  box-sizing: border-box;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-light);
  font-size: var(--text-base);
}

.form-group input:not([type="radio"]):not([type="checkbox"]):not([type="file"]):not([type="hidden"]):hover,
.form-group select:hover,
.form-group textarea:hover,
.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-text-light);
}

.form-group input:not([type="radio"]):not([type="checkbox"]):not([type="file"]):not([type="hidden"]):focus,
.form-group select:focus,
.form-group textarea:focus,
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

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

.form-input--error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-error {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-danger);
}

.form-row {
  display: flex;
  gap: var(--space-4);
}

@media (max-width: 480px) {
  .form-row {
    flex-direction: column;
    gap: var(--space-3);
  }
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-group select,
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
  cursor: pointer;
}

/* Prevent zoom on mobile for inputs */
@media screen and (max-width: 768px) {
  .form-group input:not([type="radio"]):not([type="checkbox"]):not([type="file"]):not([type="hidden"]),
  .form-group select,
  .form-group textarea,
  .form-input,
  .form-select,
  .form-textarea {
    font-size: 16px; /* Prevents iOS zoom on focus */
  }
}

/* --------------------------------------------------------------------------
   10. OTP Input (6-digit)
   -------------------------------------------------------------------------- */
.otp-container {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  margin: var(--space-6) 0;
}

.otp-input {
  width: 44px;
  height: 52px;
  padding: 0;
  font-family: inherit;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  text-align: center;
  color: var(--color-text);
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
  -moz-appearance: textfield;
  -webkit-appearance: none;
  appearance: none;
}

.otp-input::-webkit-outer-spin-button,
.otp-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.otp-input:hover {
  border-color: var(--color-text-light);
}

.otp-input:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.otp-input--filled {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.otp-input--error {
  border-color: var(--color-danger);
  animation: shake 0.3s ease-in-out;
}

/* --------------------------------------------------------------------------
   11. File Input (hidden for camera capture)
   -------------------------------------------------------------------------- */
.file-input-wrapper {
  position: relative;
}

.file-input-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.file-input-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  background-color: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast);
  width: 100%;
}

.file-input-label:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.file-input-label:active {
  transform: scale(0.99);
}

.file-input-label--has-file {
  border-style: solid;
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.file-input-preview {
  margin-top: var(--space-2);
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.file-input-preview img {
  width: 100%;
  max-height: 240px;
  object-fit: cover;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.file-input-preview__remove {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  background-color: rgba(0, 0, 0, 0.6);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-full);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: var(--text-sm);
  transition: background-color var(--transition-fast);
}

.file-input-preview__remove:hover {
  background-color: rgba(0, 0, 0, 0.8);
}

/* --------------------------------------------------------------------------
   12. Tables / Expense List
   -------------------------------------------------------------------------- */
.expense-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.expense-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.expense-item:hover {
  border-color: var(--color-text-light);
  box-shadow: var(--shadow-sm);
}

.expense-item__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.expense-item__icon svg {
  width: 20px;
  height: 20px;
}

.expense-item__info {
  flex: 1;
  min-width: 0;
}

.expense-item__title {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  margin-bottom: 2px;
}

.expense-item__meta {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.expense-item__amount {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  white-space: nowrap;
  flex-shrink: 0;
}

.expense-item__actions {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   13. Receipt Form (AI pre-filled edit form)
   -------------------------------------------------------------------------- */
.receipt-form {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.receipt-form__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.receipt-form__header svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.receipt-form__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.receipt-form__ai-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  background-color: #ede9fe;
  color: #5b21b6;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  margin-left: auto;
}

.receipt-form__ai-badge svg {
  width: 12px;
  height: 12px;
  color: #5b21b6;
}

.receipt-form__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

/* --------------------------------------------------------------------------
   14. Modal / Dialog Overlay
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base);
}

.modal-overlay--open {
  opacity: 1;
  visibility: visible;
}

.modal {
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  max-height: 90dvh;
  overflow-y: auto;
  background-color: var(--color-card);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  box-shadow: var(--shadow-xl);
  transform: translateY(100%);
  transition: transform var(--transition-slow);
  -webkit-overflow-scrolling: touch;
}

.modal-overlay--open .modal {
  transform: translateY(0);
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background-color: var(--color-card);
  z-index: 1;
}

.modal__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.modal__close:hover {
  background-color: var(--color-bg);
  color: var(--color-text);
}

.modal__body {
  padding: var(--space-6);
}

.modal__footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

/* Desktop: center modal */
@media (min-width: 768px) {
  .modal-overlay {
    align-items: center;
  }

  .modal {
    border-radius: var(--radius-xl);
    transform: translateY(0) scale(0.95);
    opacity: 0;
    transition:
      transform var(--transition-base),
      opacity var(--transition-base);
  }

  .modal-overlay--open .modal {
    transform: translateY(0) scale(1);
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   15. HTMX Loading States
   -------------------------------------------------------------------------- */

/* Pulse skeleton for content loading */
.htmx-request .skeleton,
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-border) 25%,
    #f1f5f9 50%,
    var(--color-border) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
  color: transparent !important;
  user-select: none;
  pointer-events: none;
}

.skeleton--text {
  display: inline-block;
  height: 1em;
  width: 100%;
}

.skeleton--heading {
  height: 1.5em;
  width: 60%;
}

.skeleton--avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
}

.skeleton--card {
  height: 120px;
}

/* HTMX spinner */
.htmx-indicator {
  display: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.htmx-request .htmx-indicator,
.htmx-indicator.htmx-request {
  display: inline-flex;
  opacity: 1;
}

/* Spinner animation */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner--sm {
  width: 14px;
  height: 14px;
  border-width: 2px;
}

.spinner--lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

.spinner--white {
  border-color: rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
}

/* Button loading state */
.btn--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn--loading::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn--secondary.btn--loading::after {
  border-color: var(--color-border);
  border-top-color: var(--color-primary);
}

/* HTMX swap transitions: prevent layout shifts */
.htmx-swapping {
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.htmx-settling {
  opacity: 0;
}

/* Container for replaced content — reserve space */
.htmx-target-container {
  position: relative;
  min-height: 40px;
}

/* --------------------------------------------------------------------------
   16. Toast / Notification
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  left: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  pointer-events: auto;
  animation: toast-in 0.3s ease-out;
}

.toast--success {
  border-left: 4px solid var(--color-success);
}

.toast--error {
  border-left: 4px solid var(--color-danger);
}

.toast--warning {
  border-left: 4px solid var(--color-warning);
}

.toast__message {
  flex: 1;
  font-size: var(--text-sm);
  color: var(--color-text);
}

.toast__dismiss {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-light);
  cursor: pointer;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.toast__dismiss:hover {
  background-color: var(--color-bg);
  color: var(--color-text);
}

/* Desktop positioning */
@media (min-width: 768px) {
  .toast-container {
    left: auto;
    right: var(--space-6);
    max-width: 380px;
  }
}

/* --------------------------------------------------------------------------
   17. Empty State
   -------------------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-4);
  text-align: center;
}

.empty-state__icon {
  width: 64px;
  height: 64px;
  color: var(--color-text-light);
  margin-bottom: var(--space-4);
}

.empty-state__heading {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.empty-state__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 280px;
  margin-bottom: var(--space-6);
}

/* --------------------------------------------------------------------------
   18. Login Page Specific
   -------------------------------------------------------------------------- */
.login-page {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--space-4);
  background-color: var(--color-bg);
}

.login-page__brand {
  text-align: center;
  margin-bottom: var(--space-8);
}

.login-page__brand h1 {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-secondary);
}

.login-page__brand h1 span {
  color: var(--color-primary);
}

.login-page__brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* Email step */
.login-step__email,
.login-step__otp {
  transition: opacity var(--transition-base);
}

/* OTP resend */
.otp-resend {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

.otp-resend button {
  background: none;
  border: none;
  color: var(--color-primary);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

.otp-resend button:hover {
  color: var(--color-primary-hover);
}

.otp-resend button:disabled {
  color: var(--color-text-light);
  cursor: not-allowed;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   19. Dashboard Specific
   -------------------------------------------------------------------------- */
.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.dashboard-header__title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
}

.dashboard-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Filters / tabs */
.filter-tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
  padding: var(--space-1);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.filter-tab {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  font-family: inherit;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast);
}

.filter-tab:hover {
  color: var(--color-text);
  background-color: var(--color-bg);
}

.filter-tab--active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Summary bar */
.summary-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.summary-item {
  padding: var(--space-4);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
}

.summary-item__value {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text);
}

.summary-item__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* --------------------------------------------------------------------------
   20. Receipt Capture Page
   -------------------------------------------------------------------------- */
.capture-page {
  padding: var(--space-4);
}

.capture-preview {
  margin-bottom: var(--space-6);
}

.capture-preview__image {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  background-color: #000000;
  border-radius: var(--radius-lg);
}

.capture-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   21. Utility & Accessibility
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Selection */
::selection {
  background-color: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background-color: var(--color-border);
  border-radius: var(--radius-full);
}

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

/* --------------------------------------------------------------------------
   22. Responsive: Tablet (768px+)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }

  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl); }

  .app-main {
    padding: var(--space-6) 0 var(--space-12);
  }

  /* Events grid: 2 columns */
  .events-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Summary bar: 4 columns */
  .summary-bar {
    grid-template-columns: repeat(4, 1fr);
  }

  /* Receipt form rows */
  .receipt-form__row {
    grid-template-columns: 1fr 1fr;
  }

  /* Login card vertical centering */
  .login-card {
    margin-top: 0;
  }

  /* OTP: slightly larger inputs */
  .otp-input {
    width: 48px;
    height: 56px;
    font-size: var(--text-2xl);
  }

  .fab {
    bottom: var(--space-8);
    right: var(--space-8);
  }

  /* Dashboard header stack inline */
  .dashboard-header {
    flex-wrap: nowrap;
  }

  .empty-state__icon {
    width: 80px;
    height: 80px;
  }
}

/* --------------------------------------------------------------------------
   23. Responsive: Desktop (1024px+)
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-12);
    padding-right: var(--space-12);
  }

  .app-main {
    padding: var(--space-8) 0 var(--space-16);
  }

  /* Events grid: 3 columns */
  .events-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* OTP: standard sizing */
  .otp-input {
    width: 52px;
    height: 60px;
  }

  /* Larger FAB */
  .fab {
    width: 60px;
    height: 60px;
    bottom: var(--space-10);
    right: var(--space-10);
  }

  .fab svg {
    width: 28px;
    height: 28px;
  }
}

/* --------------------------------------------------------------------------
   24. Responsive: Large Desktop (1280px+)
   -------------------------------------------------------------------------- */
@media (min-width: 1280px) {
  .container {
    padding-left: var(--space-16);
    padding-right: var(--space-16);
  }

  .events-grid {
    gap: var(--space-6);
  }
}

/* --------------------------------------------------------------------------
   25. Keyframe Animations
   -------------------------------------------------------------------------- */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes skeleton-pulse {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Utility animation classes */
.animate-fade-in {
  animation: fade-in var(--transition-base) ease-out;
}

.animate-fade-in-up {
  animation: fade-in-up var(--transition-slow) ease-out;
}

.animate-scale-in {
  animation: scale-in var(--transition-base) ease-out;
}

/* Stagger children animations */
.animate-stagger > * {
  opacity: 0;
  animation: fade-in-up var(--transition-slow) ease-out forwards;
}

.animate-stagger > *:nth-child(1) { animation-delay: 0ms; }
.animate-stagger > *:nth-child(2) { animation-delay: 60ms; }
.animate-stagger > *:nth-child(3) { animation-delay: 120ms; }
.animate-stagger > *:nth-child(4) { animation-delay: 180ms; }
.animate-stagger > *:nth-child(5) { animation-delay: 240ms; }
.animate-stagger > *:nth-child(6) { animation-delay: 300ms; }