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

:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #d1d5db;
  --text: #1f2937;
  --text-muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --success-hover: #15803d;
  --accent: #d97706;
  --accent-hover: #b45309;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.15);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

html {
  font-size: 15px;
}

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

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 16px 32px;
}

.header {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 20px;
  margin-bottom: 12px;
}

.header-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.header-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}

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

.settings-panel {
  margin-top: 12px;
  padding: 12px 16px;
  background: #f9fafb;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.settings-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.settings-row label {
  font-weight: 600;
  font-size: .9rem;
  white-space: nowrap;
}

.settings-control {
  display: flex;
  gap: 6px;
  flex: 1;
  min-width: 200px;
}

.settings-info {
  margin-top: 6px;
  font-size: .8rem;
  color: var(--text-muted);
}

.toolbar {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px 16px;
  margin-bottom: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
}

.toolbar-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.filter-label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: .85rem;
  font-weight: 500;
  white-space: nowrap;
}

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

.input {
  font: inherit;
  font-size: .9rem;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}

.input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.2);
}

.input-date {
  width: 140px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font: inherit;
  font-size: .85rem;
  font-weight: 600;
  padding: 7px 14px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background .15s, box-shadow .15s, transform .1s;
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: scale(.97);
}

.btn-small {
  font-size: .8rem;
  padding: 5px 10px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: #6b7280;
  color: #fff;
}

.btn-secondary:hover {
  background: #374151;
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-success:hover {
  background: var(--success-hover);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--accent-hover);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: #f3f4f6;
}

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}

.btn-danger:hover {
  background: #fef2f2;
}

.table-container {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}

.data-table thead {
  background: #f9fafb;
}

.data-table th {
  text-align: left;
  padding: 10px 12px;
  font-weight: 600;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}

.col-date { width: 150px; min-width: 130px; }
.col-group { width: 200px; min-width: 150px; }
.col-manip { min-width: 200px; }
.col-actions { width: 70px; min-width: 60px; text-align: center; }

.data-table td {
  padding: 6px 8px;
  border-bottom: 1px solid #e5e7eb;
  vertical-align: middle;
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table .table-input {
  width: 100%;
  font: inherit;
  font-size: .85rem;
  padding: 5px 8px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: var(--text);
  transition: border-color .15s, background .15s;
}

.data-table .table-input:hover {
  background: #f9fafb;
}

.data-table .table-input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 2px rgba(37,99,235,.15);
}

.data-table .table-input.date-input {
  min-width: 120px;
}

.data-table tbody tr:hover {
  background: #f9fafb;
}

.empty-row td {
  text-align: center;
  padding: 40px 16px !important;
  color: var(--text-muted);
  font-style: italic;
  font-size: .9rem;
}

.btn-delete-row {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--danger);
  font-size: 1rem;
  cursor: pointer;
  transition: background .15s;
}

.btn-delete-row:hover {
  background: #fef2f2;
}

.record-count {
  padding: 8px 16px;
  font-size: .82rem;
  color: var(--text-muted);
  border-top: 1px solid #e5e7eb;
  text-align: right;
}

.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  padding: 12px 20px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  font-size: .9rem;
  font-weight: 500;
  border-left: 4px solid var(--success);
  transform: translateX(120%);
  transition: transform .3s ease;
  max-width: 400px;
}

.notification.show {
  transform: translateX(0);
}

.notification.error {
  border-left-color: var(--danger);
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal.hidden {
  display: none;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.4);
}

.modal-content {
  position: relative;
  z-index: 1;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  max-width: 800px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 6px;
  background: transparent;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.modal-close:hover {
  background: #f3f4f6;
  color: var(--text);
}

.modal-body {
  padding: 16px 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  justify-content: flex-end;
}

.report-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85rem;
}

.report-table th {
  text-align: left;
  padding: 8px 10px;
  font-weight: 600;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
}

.report-table td {
  padding: 7px 10px;
  border-bottom: 1px solid #e5e7eb;
}

.report-table tr:last-child td {
  border-bottom: none;
}

.report-summary {
  margin-bottom: 12px;
  font-size: .85rem;
  color: var(--text-muted);
}

.report-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-style: italic;
}

.modal-about {
  max-width: 400px;
}

.about-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 24px 20px;
  text-align: center;
}

.about-logo img {
  width: 128px;
  height: 128px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.about-text p {
  margin: 4px 0;
  font-size: .95rem;
  line-height: 1.6;
}

.about-text p:first-child {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.hidden {
  display: none !important;
}

/* Burger button — hidden on desktop */
.burger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  flex-shrink: 0;
}

.burger-btn span {
  display: block;
  height: 2.5px;
  background: var(--text);
  border-radius: 2px;
  transition: .3s;
}

/* Mobile menu drawer */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(0,0,0,.4);
}

.mobile-menu-overlay.open {
  display: block;
}

.mobile-menu {
  display: flex;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 9999;
  width: 85vw;
  max-width: 360px;
  background: var(--surface);
  box-shadow: var(--shadow-lg);
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform .25s ease;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.mobile-menu-title {
  font-weight: 700;
  font-size: 1rem;
}

.mobile-menu-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px;
}

.mobile-section {
  margin-bottom: 20px;
}

.mobile-section-title {
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.btn-block {
  width: 100%;
  justify-content: center;
  margin-bottom: 6px;
}

.mobile-filters {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mobile-filters .filter-label {
  justify-content: space-between;
}

@media (max-width: 768px) {
  #app {
    padding: 8px 8px 20px;
  }

  .burger-btn {
    display: flex;
  }

  .header-left {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .header-top {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .header-title {
    font-size: 1.05rem;
  }

  .header-actions {
    display: none;
  }

  .toolbar {
    display: none;
  }

  .col-date { width: 120px; min-width: 100px; }
  .col-group { width: 140px; min-width: 110px; }

  .data-table {
    font-size: .82rem;
  }

  .data-table th,
  .data-table td {
    padding: 5px 6px;
  }

  .data-table .table-input {
    font-size: .8rem;
    padding: 4px 6px;
  }

  .modal-content {
    max-height: 90vh;
  }

  .btn {
    font-size: .8rem;
    padding: 6px 10px;
  }

  .input-date {
    width: 120px;
  }
}

@media print {
  body { background: #fff; }
  .header, .toolbar, .table-container { box-shadow: none; border: 1px solid #ddd; }
  .btn, .modal-close, .modal-footer, .notification, .record-count { display: none !important; }
  .modal { position: static; }
  .modal-overlay { display: none; }
  .modal-content { max-width: 100%; box-shadow: none; border: none; }
  .modal-header { border-bottom: 2px solid #000; }
}