:root {
  --bk-primary: #007AFF;
  --bk-primary-dark: #0062CC;
  --bk-primary-light: #409CFF;
  --bk-accent: #FF9500;
  --bk-accent-dark: #CC7700;
  --bk-success: #34C759;
  --bk-warning: #FF9500;
  --bk-danger: #FF3B30;
  --bk-info: #5AC8FA;

  --bk-bg: #F2F2F7;
  --bk-bg-card: #FFFFFF;
  --bk-bg-sidebar: linear-gradient(180deg, #1C1C1E 0%, #2C2C2E 100%);
  --bk-text: #1C1C1E;
  --bk-text-muted: #3A3A3C;
  --bk-text-tertiary: #8E8E93;
  --bk-text-inverse: #FFFFFF;
  --bk-border: #C6C6C8;
  --bk-shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --bk-shadow-lg: 0 8px 30px rgba(0,0,0,.1);
  --bk-radius: 12px;
  --bk-radius-sm: 8px;
  --bk-radius-lg: 16px;
  --bk-radius-full: 999px;
  --bk-font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', 'Inter', sans-serif;
  --bk-transition: all .2s cubic-bezier(.4,0,.2,1);
  --bk-spring: cubic-bezier(.32,.72,0,1);
  --bk-nav-width: 260px;
}

html {
  box-sizing: border-box;
}

*, *::before, *::after {
  box-sizing: inherit;
}

html {
  height: -webkit-fill-available;
}

body {
  font-family: var(--bk-font);
  background: var(--bk-bg);
  color: var(--bk-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  overscroll-behavior: none;
  overflow-x: hidden;
  width: 100%;
  min-height: 100dvh;
  min-height: -webkit-fill-available;
  -webkit-overflow-scrolling: touch;
}

.scroll-container, .more-menu-body, .nav-scrollable, [style*="overflow"] {
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

img, svg, video, canvas, audio, iframe, embed, object {
  max-width: 100%;
  height: auto;
}

input, select, textarea, button {
  font-family: inherit;
}

*:focus-visible {
  outline: 3px solid var(--bk-primary);
  outline-offset: 2px;
  border-radius: var(--bk-radius-sm);
}

::selection {
  background: rgba(0,122,255,.2);
  color: var(--bk-text);
}

.page {
  display: flex;
  min-height: 100vh;
}
.sidebar {
  width: var(--bk-nav-width);
  background: var(--bk-bg-sidebar);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 1000;
  overflow-y: auto;
  transform: translateX(0);
  transition: transform .35s cubic-bezier(.4,0,.2,1);
}
.sidebar.open {
  transform: translateX(0);
}
main {
  margin-left: var(--bk-nav-width);
  flex: 1;
  padding: 0;
  min-width: 0;
}
.top-row {
  display: none;
  height: 56px;
  background: rgba(255,255,255,.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--bk-border);
  align-items: center;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 999;
}
.content {
  padding: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.navbar-toggler {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  padding: 8px 12px;
  cursor: pointer;
  color: var(--bk-text);
  min-height: 44px;
  min-width: 44px;
  touch-action: manipulation;
}
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.3);
  z-index: 999;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.mobile-overlay.open {
  display: block;
}

.navbar-brand {
  display: block;
  padding: 24px 20px 12px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--bk-text-inverse);
  letter-spacing: -.02em;
  text-decoration: none;
  opacity: .95;
}
.navbar-brand small {
  display: block;
  font-size: .7rem;
  font-weight: 400;
  opacity: .55;
  margin-top: 2px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: rgba(255,255,255,.65);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  border-radius: 10px;
  margin: 2px 10px;
  transition: var(--bk-transition);
  min-height: 44px;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,.1);
}
.nav-link.active {
  color: #fff;
  background: var(--bk-primary);
  box-shadow: 0 2px 8px rgba(0,122,255,.3);
}
.nav-link .bi {
  font-size: 1.1rem;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}
.nav-section-label {
  display: block;
  padding: 20px 20px 6px;
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: rgba(255,255,255,.3);
}

.glass-card {
  background: var(--bk-bg-card);
  border-radius: var(--bk-radius);
  box-shadow: var(--bk-shadow);
  border: 1px solid var(--bk-border);
  transition: var(--bk-transition);
  overflow: hidden;
}
.glass-card:hover {
  box-shadow: var(--bk-shadow-lg);
}
.glass-card .card-header {
  background: transparent;
  border-bottom: 1px solid var(--bk-border);
  padding: 16px 20px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.glass-card .card-body {
  padding: 20px;
}

.glass-card.glass-primary { border-left: 4px solid var(--bk-primary); }
.glass-card.glass-success { border-left: 4px solid var(--bk-success); }
.glass-card.glass-warning { border-left: 4px solid var(--bk-warning); }
.glass-card.glass-danger { border-left: 4px solid var(--bk-danger); }
.glass-card.glass-info { border-left: 4px solid var(--bk-info); }
.glass-card.glass-accent { border-left: 4px solid var(--bk-accent); }

.card {
  border-radius: var(--bk-radius);
  box-shadow: var(--bk-shadow);
  border: 1px solid var(--bk-border);
  transition: var(--bk-transition);
}
.card .card-header {
  background: transparent;
  border-bottom: 1px solid var(--bk-border);
  padding: 16px 20px;
  font-weight: 600;
}
.card .card-body {
  padding: 20px;
}

.btn {
  min-height: 44px;
  padding: 10px 24px;
  border-radius: var(--bk-radius-full);
  font-weight: 600;
  font-size: .9rem;
  transition: var(--bk-transition);
  touch-action: manipulation;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  border: none;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    height: -webkit-fill-available;
}

body {
    overscroll-behavior: none;
    -webkit-overflow-scrolling: touch;
    min-height: 100dvh;
    min-height: -webkit-fill-available;
    scroll-behavior: smooth;
}

/* ===== Scrollable containers – native iOS momentum ===== */
.scroll-container, .more-menu-body, .nav-scrollable, [style*="overflow"] {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}
.btn-primary {
  background: var(--bk-primary);
  border: none;
  color: #fff;
}
.btn-primary:hover {
  background: var(--bk-primary-dark);
  box-shadow: 0 4px 12px rgba(0,122,255,.3);
}
.btn-success {
  background: var(--bk-success);
  border: none;
  color: #fff;
}
.btn-success:hover {
  box-shadow: 0 4px 12px rgba(52,199,89,.3);
}
.btn-danger {
  background: var(--bk-danger);
  border: none;
  color: #fff;
}
.btn-danger:hover {
  box-shadow: 0 4px 12px rgba(255,59,48,.3);
}
.btn-outline {
  background: transparent;
  border: 1.5px solid var(--bk-border);
  color: var(--bk-primary);
}
.btn-outline:hover {
  background: rgba(0,122,255,.06);
  border-color: var(--bk-primary);
}
.btn-sm {
  min-height: 36px;
  padding: 6px 16px;
  font-size: .85rem;
}

.entry-form .form-label {
  font-weight: 500;
  font-size: .85rem;
  color: var(--bk-text-muted);
  margin-bottom: 6px;
}
.entry-form .form-control,
.entry-form .form-select {
  border-radius: 10px;
  border: 1.5px solid var(--bk-border);
  padding: 12px 16px;
  min-height: 48px;
  font-size: .95rem;
  transition: var(--bk-transition);
  background: var(--bk-bg-card);
  color: var(--bk-text);
  -webkit-appearance: none;
  appearance: none;
}
.entry-form .form-control:focus,
.entry-form .form-select:focus {
  border-color: var(--bk-primary);
  box-shadow: 0 0 0 4px rgba(0,122,255,.12);
  outline: none;
}
.entry-form .form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238E8E93' d='M1.41 0L6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.stat-card {
  background: var(--bk-bg-card);
  border-radius: var(--bk-radius);
  padding: 20px 24px;
  box-shadow: var(--bk-shadow);
  border: 1px solid var(--bk-border);
  transition: var(--bk-transition);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  border-radius: 0 2px 2px 0;
}
.stat-card:hover {
  box-shadow: var(--bk-shadow-lg);
}
.stat-card .stat-label {
  font-size: .8rem;
  font-weight: 500;
  color: var(--bk-text-tertiary);
  margin-bottom: 4px;
}
.stat-card .stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--bk-text);
  letter-spacing: -.02em;
}
.stat-card .stat-icon {
  position: absolute;
  top: 16px; right: 16px;
  font-size: 2rem;
  opacity: .1;
}

.stat-card.primary::before { background: var(--bk-primary); }
.stat-card.success::before { background: var(--bk-success); }
.stat-card.warning::before { background: var(--bk-warning); }
.stat-card.danger::before { background: var(--bk-danger); }
.stat-card.accent::before { background: var(--bk-accent); }
.stat-card.info::before { background: var(--bk-info); }

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--bk-radius-sm);
  border: 1px solid var(--bk-border);
}
.table-wrap table {
  margin-bottom: 0;
  min-width: 600px;
}
.table-wrap th {
  background: #F9F9FB;
  font-weight: 600;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--bk-text-tertiary);
  padding: 12px 16px;
  border-bottom: 1px solid var(--bk-border);
  white-space: nowrap;
}
.table-wrap td {
  padding: 12px 16px;
  vertical-align: middle;
  border-bottom: 1px solid #F2F2F7;
}
.table-wrap tr:last-child td {
  border-bottom: none;
}
.table-wrap tr:hover td {
  background: rgba(0,122,255,.03);
}

.mobile-card-list {
  display: none;
}
.mobile-card-list .list-item {
  background: var(--bk-bg-card);
  border-radius: var(--bk-radius);
  padding: 16px;
  margin-bottom: 8px;
  box-shadow: var(--bk-shadow);
  border: 1px solid var(--bk-border);
  transition: var(--bk-transition);
  cursor: pointer;
}
.mobile-card-list .list-item:active {
  transform: scale(.98);
  background: #F9F9FB;
}
.mobile-card-list .list-item .item-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
}
.mobile-card-list .list-item .item-label {
  font-size: .8rem;
  color: var(--bk-text-tertiary);
}
.mobile-card-list .list-item .item-value {
  font-weight: 600;
  color: var(--bk-text);
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}
.page-header h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0;
  color: var(--bk-text);
  letter-spacing: -.02em;
}
.page-header .page-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.badge-glow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: var(--bk-radius-full);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .01em;
}
.badge-glow::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}
.badge-glow.active, .badge-glow.posted, .badge-glow.paid {
  background: rgba(52,199,89,.15);
  color: #248A3D;
}
.badge-glow.active::before, .badge-glow.posted::before, .badge-glow.paid::before { background: var(--bk-success); }
.badge-glow.pending, .badge-glow.draft {
  background: rgba(255,149,0,.15);
  color: #C06000;
}
.badge-glow.pending::before, .badge-glow.draft::before { background: var(--bk-warning); }
.badge-glow.inactive, .badge-glow.overdue {
  background: rgba(255,59,48,.15);
  color: #BF2B24;
}
.badge-glow.inactive::before, .badge-glow.overdue::before { background: var(--bk-danger); }
.badge-glow.approved {
  background: rgba(0,122,255,.15);
  color: #0055B3;
}
.badge-glow.approved::before { background: var(--bk-primary); }

.hero-section {
  background: linear-gradient(135deg, var(--bk-primary) 0%, #5856D6 100%);
  border-radius: var(--bk-radius-lg);
  padding: 48px 40px;
  color: #fff;
  position: relative;
  overflow: hidden;
  margin-bottom: 32px;
}
.hero-section::after {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-section h1 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -.02em;
}
.hero-section p {
  font-size: 1.05rem;
  opacity: .85;
  max-width: 500px;
  font-weight: 400;
}

.touch-action {
  transition: transform .15s var(--bk-spring);
  cursor: pointer;
}
.touch-action:active {
  transform: scale(.94);
}

/* ===== Swipe-to-delete list items ===== */
.list-item {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    background: var(--bk-bg-card, #fff);
    border-radius: var(--bk-radius, 12px);
    margin-bottom: 8px;
    touch-action: pan-y;
    position: relative;
    overflow: hidden;
    transition: transform .2s var(--bk-spring);
}

.list-item:active {
    transform: scale(.97);
    background: rgba(0,0,0,.02);
}

.swipe-action {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bk-danger, #FF3B30);
    color: #fff;
    font-weight: 600;
    font-size: .8rem;
    border-radius: 0 var(--bk-radius, 12px) var(--bk-radius, 12px) 0;
    transform: translateX(100%);
    transition: transform .2s var(--bk-spring);
}

.list-item.swiped .swipe-action {
    transform: translateX(0);
}
.touch-action:active {
  transform: scale(.96);
}

.bottom-nav {
    display: none;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    padding: 8px 14px;
    color: var(--bk-text-tertiary, #8E8E93);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 500;
    background: none;
    border: none;
    cursor: pointer;
    min-height: 64px;
    min-width: 72px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    position: relative;
    transition: transform .15s var(--bk-spring);
}

.bottom-nav-item:active {
    transform: scale(.92);
}

.bottom-nav-item.active::after {
    content: '';
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--bk-primary, #007AFF);
}

.bottom-nav-item:hover,
.bottom-nav-item:active {
    color: var(--bk-primary, #007AFF);
}

.bottom-nav-item.active {
    color: var(--bk-primary, #007AFF);
}

.bottom-nav-icon {
    font-size: 1.4rem;
    line-height: 1;
    margin-bottom: 1px;
}

/* ===== Segmented-control-style tabs ===== */
.nav-tabs {
  display: flex;
  background: #E5E5EA;
  border-radius: 10px;
  padding: 2px;
  gap: 0;
  border: none;
}
.nav-tabs .nav-link {
  flex: 1;
  color: var(--bk-text-muted);
  border: none;
  padding: 10px 18px;
  font-weight: 600;
  font-size: .85rem;
  border-radius: 8px;
  background: transparent;
  min-height: 44px;
  transition: all .25s var(--bk-spring);
  text-align: center;
  white-space: nowrap;
  cursor: pointer;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

.nav-tabs .nav-link:active {
  transform: scale(.94);
}
.nav-tabs .nav-link:hover {
  color: var(--bk-text);
}
.nav-tabs .nav-link.active {
  color: var(--bk-text);
  background: var(--bk-bg-card);
  box-shadow: 0 1px 3px rgba(0,0,0,.1);
}

/* ===== Swipe & touch native gestures ===== */
.swipe-track {
  will-change: transform;
  touch-action: pan-y;
}
.swipe-track > * {
  touch-action: pan-y;
}
.ptr-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 60px;
  margin-top: -60px;
  color: var(--bk-text-tertiary);
  font-size: .85rem;
  gap: 4px;
  will-change: transform, opacity;
}
.ptr-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid #E5E5EA;
  border-top-color: var(--bk-primary);
  border-radius: 50%;
  animation: ptr-spin .6s linear infinite;
}
@keyframes ptr-spin { to { transform: rotate(360deg); } }

.list-item {
  position: relative;
  overflow: hidden;
  touch-action: pan-y;
}
.swipe-action {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bk-danger);
  color: #fff;
  font-size: .8rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  will-change: transform;
}

/* ===== Responsive: tablets (769px-991px) ===== */
@media (min-width: 769px) and (max-width: 991px) {
  [class*="col-lg-"] {
    flex: 0 0 50% !important;
    max-width: 50% !important;
  }
  [class*="col-xl-"] {
    flex: 0 0 50% !important;
    max-width: 50% !important;
  }
  .content {
    padding: 20px;
  }
  .desktop-table {
    display: table;
  }
  .mobile-card-list {
    display: none;
  }
  .hero-section {
    padding: 36px 28px;
  }
  .hero-section h1 {
    font-size: 1.8rem;
  }
}

/* ===== Responsive: mobile (≤768px) ===== */
@media (max-width: 768px) {
  .bottom-nav {
    display: flex !important;
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 80px;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--bk-border, #C6C6C8);
    z-index: 1001 !important;
    justify-content: space-around;
    align-items: center;
    padding-bottom: env(safe-area-inset-bottom, 0);
    box-shadow: 0 -1px 8px rgba(0,0,0,.04);
  }

  .sidebar {
    display: none !important;
  }
  .mobile-overlay {
    display: none !important;
  }
  .more-menu-panel {
    max-height: none;
    height: 100dvh;
    border-radius: 0;
    top: 0;
  }
  .more-menu-header {
    padding-top: calc(env(safe-area-inset-top, 0) + 16px);
  }

  [class*="col-"] {
    flex: 0 0 100% !important;
    max-width: 100% !important;
  }

  .entry-form .btn,
  .entry-form button,
  .entry-form .form-control,
  .entry-form .form-select {
    width: 100%;
  }

  .btn, button, .form-control, .form-select {
    width: 100%;
    min-height: 44px;
  }

  .page-actions .btn {
    flex: 1;
    min-width: 0;
    justify-content: center;
  }

  .table-wrap table {
    min-width: 0;
  }

  main {
    margin-left: 0;
    padding-bottom: 88px;
  }
  .top-row {
    display: flex;
    height: 56px;
  }
  .content {
    padding: 16px;
  }
  .page-header h3 {
    font-size: 1.2rem;
  }
  .desktop-table {
    display: none;
  }
  .mobile-card-list {
    display: block;
  }
  .glass-card .card-body {
    padding: 16px;
  }
  .stat-card .stat-value {
    font-size: 1.3rem;
  }
  .hero-section {
    padding: 28px 20px;
  }
  .hero-section h1 {
    font-size: 1.5rem;
  }
  .hero-section p {
    font-size: .9rem;
  }
  .nav-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .nav-tabs::-webkit-scrollbar {
    display: none;
  }
  .nav-tabs .nav-link {
    white-space: nowrap;
    padding: 10px 14px;
    font-size: .8rem;
    min-height: 44px;
  }
}

@media (min-width: 769px) {
  .desktop-table {
    display: table;
  }
  .mobile-card-list {
    display: none;
  }
}

@media (max-width: 576px) {
  .stat-card {
    padding: 16px;
  }
  .stat-card .stat-value {
    font-size: 1.1rem;
  }
  .content {
    padding: 12px;
  }
  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .page-header .page-actions {
    width: 100%;
  }
  .page-header .page-actions .btn {
    flex: 1;
  }
}

@media (min-width: 1400px) {
  .content {
    max-width: 1400px;
  }
}