:root {
  --font-stack: 'Inter', sans-serif;
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --border-color: #dee2e6;
  --accent-primary: #0d6efd;
  --accent-primary-hover: #0b5ed7;
  --shadow-color: rgba(0, 0, 0, 0.08);
  --header-bg: var(--bg-secondary);
  --transition-speed: 0.3s;
  --bg-card: #ffffff;
  --btn-info: #0dcaf0;
  --btn-info-hover: #31d2f2;
  --btn-success: #198754;
  --btn-success-hover: #157347;
  --btn-danger: #dc3545;
  --btn-danger-hover: #bb2d3b;
}

body.dark-mode {
  --bg-primary: #121212;
  --bg-secondary: #1e1e1e;
  --bg-tertiary: #2a2a2a;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --border-color: #3a3a3a;
  --accent-primary: #4f9dff;
  --accent-primary-hover: #73b4ff;
  --shadow-color: rgba(0, 0, 0, 0.4);
  --header-bg: #1a1a1a;
  --bg-card: #282828;
  --btn-info: #20c997;
  --btn-info-hover: #17a2b8;
  --btn-success: #28a745;
  --btn-success-hover: #218838;
  --btn-danger: #dc3545;
  --btn-danger-hover: #c82333;
}

/* --- ESTILOS GERAIS E LAYOUT PRINCIPAL --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-stack);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
  overflow-x: hidden;
}

header,
.container {
  width: 100%;
  max-width: 900px;
  box-sizing: border-box;
  background-color: var(--bg-secondary);
  border-radius: 12px;
  box-shadow: 0 4px 15px -3px var(--shadow-color);
  transition: background-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  padding: 1.5rem 2rem;
}

/* --- CABEÇALHO --- */
header {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-content,
.header-end {
  width: 60px;
  display: flex;
  align-items: center;
}

.header-content {
  justify-content: flex-start;
}

.header-end {
  justify-content: flex-end;
  flex: 0 0 auto;
}

.header-title {
  flex-grow: 1;
  text-align: center;
  color: var(--text-primary);
  font-weight: 600;
  white-space: nowrap;
}

.logo {
  height: 40px;
  border-radius: 4px;
  flex-shrink: 0;
  max-width: 100px;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: background-color var(--transition-speed) ease;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background-color: var(--bg-primary);
}

.theme-toggle svg {
  width: 24px;
  height: 24px;
}

.welcome-header {
  text-align: center;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

/* --- Seção de Gerenciamento --- */
.management-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1rem;
  background-color: var(--bg-primary);
  border-radius: 8px;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
}

.management-header .group-selector,
.management-header .action-buttons {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* --- TABELAS E LISTAS --- */
.scrollable-list {
  max-height: 500px;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-secondary);
}

.table-header-col {
  padding: 12px 18px;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: left;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table-row-col {
  padding: 14px 18px;
  border-top: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

#manage-participants-tbody tr:hover, #manage-duplicates-tbody tr:hover {
  background-color: var(--bg-tertiary);
}

.actions-cell .btn {
  opacity: 0.85;
  transform: scale(0.95);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

tr:hover .actions-cell .btn {
  opacity: 1;
  transform: scale(1);
}

/* --- MODAL DE DUPLICATAS --- */
#duplicates-modal .scrollable-list td {
    vertical-align: middle;
}

#duplicates-modal .radio-list,
#duplicates-modal .radio-label-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

#duplicates-modal .radio-label-container {
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background-color 0.2s;
    width: 100%;
}

#duplicates-modal .radio-label-container:hover {
    background-color: var(--bg-tertiary);
}

#duplicates-modal .radio-label-container input {
    margin: 0;
    flex-shrink: 0;
}

@media (min-width: 768px) {
    #duplicates-modal .scrollable-list table td[data-label="Ação:"] {
        text-align: center;
    }
}

/* --- SEÇÕES E ANIMAÇÃO --- */
.section {
  display: none;
  animation: fadeIn 0.4s ease-out forwards;
}

.section.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- CAMPOS DE FORMULÁRIO --- */
.input-group label,
#common-fields label {
  font-weight: 600;
  color: var(--text-primary);
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="email"] {
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 10px 14px;
  width: 100%;
  transition: border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 20%, transparent);
}

.input-simple {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.95rem;
}

.input-simple:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 25%, transparent);
}

/* --- BOTÕES --- */
.btn {
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.2s ease-in-out;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-align: center;
  white-space: nowrap;
}

.btn svg {
  flex-shrink: 0;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 10px var(--shadow-color);
}

.btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
}

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

.btn-secondary {
  background-color: var(--text-secondary);
  color: white;
  border-color: var(--text-secondary);
}

.btn-secondary:hover {
  background-color: color-mix(in srgb, var(--text-secondary) 80%, black);
}

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

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

.btn-success {
  background-color: var(--btn-success);
  color: white;
  border-color: var(--btn-success);
}

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

.btn-info {
  background-color: var(--btn-info);
  color: white;
  border-color: var(--btn-info);
}

.btn-info:hover {
  background-color: var(--btn-info-hover);
  border-color: var(--btn-info-hover);
}

.btn-danger {
  background-color: var(--btn-danger);
  color: white;
  border-color: var(--btn-danger);
}

.btn-danger:hover {
  background-color: var(--btn-danger-hover);
  border-color: var(--btn-danger-hover);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.85rem;
  height: auto;
  white-space: normal;
  word-break: break-word;
  flex-shrink: 1;
}

.btn-copy {
    background-color: #198754;
    color: white;
    border-color: #198754;
}

.btn-copy:hover {
    background-color: #157347;
    border-color: #157347;
}

/* --- BOTÕES DE FILTRO --- */
.btn-outline-filter {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease-in-out;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 8px;
}

.btn-outline-filter:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-outline-filter.active {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
  font-weight: 600;
}

body.dark-mode .btn-outline-filter.active {
  background-color: var(--accent-primary);
  color: white;
}

/* --- BOTÕES DE ATALHO --- */
.top-right-shortcut-buttons {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  z-index: 1050; /* <<<< AUMENTADO DE 50 PARA 1050 (maior que modais) */
}

.shortcut-tracker-btn,
.settings-btn {
  background: none;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  position: relative; /* <<<< ADICIONADO */
  z-index: inherit; /* <<<< ADICIONADO - herda o z-index do pai */
}

.shortcut-tracker-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
  transform: rotate(15deg);
}

.settings-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
  transform: rotate(45deg);
}

/* --- GRUPOS DE BOTÕES E RÁDIOS --- */
.radio-group,
.button-grid-group {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.radio-group label {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.radio-group input[type="radio"]:checked + span {
  color: var(--accent-primary);
  font-weight: 600;
}

.radio-group label:has(input:checked) {
  border-color: var(--accent-primary);
  background-color: color-mix(in srgb, var(--accent-primary) 10%, transparent);
}

.radio-group label:hover {
  background-color: var(--bg-primary);
}

/* --- CHECKBOXES PERSONALIZADOS --- */
input[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  background-color: transparent;
  margin: 0;
  font: inherit;
  width: 1.15em;
  height: 1.15em;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  transform: translateY(-0.075em);
  display: grid;
  place-content: center;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

input[type="checkbox"]::before {
  content: "";
  width: 0.65em;
  height: 0.65em;
  transform: scale(0);
  transition: 120ms transform ease-in-out;
  box-shadow: inset 1em 1em var(--accent-primary);
  clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

input[type="checkbox"]:checked::before {
  transform: scale(1.2);
}

input[type="checkbox"]:checked {
  border-color: var(--accent-primary);
  background-color: var(--accent-primary);
}

input[type="checkbox"]:focus {
  outline: none;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 20%, transparent);
}

body.dark-mode input[type="checkbox"]:checked::before {
  box-shadow: inset 1em 1em white;
}

/* --- SWITCH TOGGLE --- */
.switch-toggle {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
  cursor: pointer;
}

.switch-checkbox {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-ui {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  border-radius: 28px;
  transition: background-color 0.2s ease-in-out;
}

.switch-ui::before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  border-radius: 50%;
  transition: transform 0.2s ease-in-out;
}

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

.switch-checkbox:focus + .switch-ui {
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 30%, transparent);
}

.switch-checkbox:checked + .switch-ui::before {
  transform: translateX(22px);
}

/* --- SIDEBAR --- */
.sidebar {
  position: fixed;
  top: 90px;
  left: 0;
  height: calc(100vh - 90px);
  width: 210px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  box-shadow: 4px 0 10px -4px var(--shadow-color);
  padding: 1rem;
  overflow-y: auto;
  z-index: 500;
  transition: transform var(--transition-speed) ease;
}

.menu-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--text-primary);
  background: transparent;
  transition: background-color 0.2s;
}

.menu-btn:hover,
.menu-btn.active {
  background-color: color-mix(in srgb, var(--accent-primary) 10%, var(--bg-primary));
}

.menu-btn .icon {
  width: 1.25rem;
  height: 1.25rem;
  text-align: center;
  flex-shrink: 0;
}

.menu-btn svg {
  width: 100%;
  height: 100%;
}

/* --- SETTINGS MENU --- */
.settings-menu {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.settings-menu .btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  justify-content: flex-start;
}

.settings-menu .btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* --- STICKY HEADER --- */
.sticky-header {
  position: sticky;
  top: 0;
  background-color: var(--bg-primary);
  z-index: 10;
}

tr.participant-row:hover {
  background-color: var(--bg-primary);
}

body.dark-mode #participants-list {
  background-color: var(--bg-secondary);
}

body.dark-mode .participant-row:nth-child(even) {
  background-color: color-mix(in srgb, var(--bg-secondary) 90%, black);
}

body.dark-mode .participant-row:hover {
  background-color: var(--accent-primary-hover);
  color: white;
}

/* --- CONTROLES INFERIORES --- */
.main-controls-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.button-group-left,
.button-group-right {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

/* --- MODAIS --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(2px);
  z-index: 1000; /* <<<< MANTÉM 1000, mas os botões ficam em 1050 */
}

.modal-overlay.active {
  display: grid;
}

.modal-content {
  width: 420px;
  max-width: 90vw;
  background: color-mix(in srgb, var(--bg-secondary) 75%, transparent);
  border: 1px solid color-mix(in srgb, var(--border-color) 40%, transparent);
  border-radius: 14px;
  padding: 28px 32px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  color: var(--text-primary);
  animation: pop-in 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes pop-in {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1.4rem;
  color: var(--accent-primary);
}

.modal-toolbar,
.modal-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: space-between;
  width: 100%;
}

.modal-toolbar {
  margin-top: 1.1rem;
  margin-bottom: 0.75rem;
}

.modal-footer {
  margin-top: 1.75rem;
}

.modal-content .btn {
  flex: 1 1 calc(50% - 0.5rem);
  min-width: 120px;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: transform 0.18s, box-shadow 0.18s, filter 0.15s;
}

/* --- VALIDAÇÃO --- */
.validator-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  transition: all 0.2s ease-in-out;
}

.validator-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
}

.validator-btn svg {
  width: 16px;
  height: 16px;
}

.validation-container {
    display: flex;
    gap: 0.75rem;
}

.validation-result-container {
    margin-top: 1.5rem;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: left;
    display: none;
    transition: all 0.3s ease-in-out;
}

.validation-result-container.success {
    background-color: color-mix(in srgb, var(--btn-success) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--btn-success) 30%, transparent);
}

body.dark-mode .validation-result-container.success {
    background-color: rgba(25, 135, 84, 0.15);
    border-color: rgba(25, 135, 84, 0.4);
}

.validation-result-container.error {
    background-color: color-mix(in srgb, var(--btn-danger) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--btn-danger) 30%, transparent);
    text-align: center;
}

body.dark-mode .validation-result-container.error {
    background-color: rgba(220, 53, 69, 0.15);
    border-color: rgba(220, 53, 69, 0.4);
}

.result-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.result-header.success { 
  color: var(--btn-success); 
}

.result-header.error { 
  color: var(--btn-danger); 
  justify-content: center; 
}

.result-details p {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.result-details p:last-child {
    border-bottom: none;
}

.result-details strong {
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: 1rem;
}

.result-details span {
    font-weight: 500;
    color: var(--text-primary);
}

/* --- LOG TABLES --- */
.log-action-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    width: 100%;
}

.log-action-buttons .btn {
    flex-grow: 1;
}

/* --- DASHBOARD --- */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2rem;
  margin-top: 2rem;
  align-items: start;
}

.action-card {
  background-color: var(--bg-primary);
  padding: 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: left;
  min-height: 200px;
}

.certificates-list-container {
  max-height: 400px;
  overflow-y: auto;
  padding: 0.25rem;
}

.certificate-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: all 0.2s ease-in-out;
  text-align: left;
  word-break: break-all;
  margin-bottom: 0.75rem;
}

.certificate-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px -2px var(--shadow-color);
  border-color: var(--accent-primary);
}

.certificate-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background-color: color-mix(in srgb, var(--accent-primary) 10%, transparent);
  color: var(--accent-primary);
}

.certificate-details {
  flex-grow: 1;
  min-width: 0;
  margin-right: 1rem;
}

.certificate-details h3 {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  white-space: normal;
}

.certificate-details p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  white-space: normal;
}

.certificate-actions {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* --- BADGES --- */
.status-badge, .type-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
    color: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.status-badge svg, .type-badge svg {
    width: 14px;
    height: 14px;
}

.badge-pending {
    background-color: #ffc107;
    color: #212529;
}

.badge-approved {
    background-color: #198754;
}

.badge-rejected {
    background-color: #dc3545;
}

.badge-type-carga {
    background-color: #0dcaf0;
}

.badge-type-vinculo {
    background-color: #6c757d;
}

/* --- FOOTER --- */
.container-footer {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

/* --- RESPONSIVIDADE --- */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .with-sidebar {
    margin-left: 0;
  }
}

@media (min-width: 1024px) {
  .with-sidebar {
    margin-left: 230px;
  }
}

@media (max-width: 768px) {
  .top-right-shortcut-buttons {
    top: 0.75rem;
    right: 0.75rem;
    gap: 0.5rem;
  }

  body {
    padding: 10px;
  }

  header, .container {
    padding: 1.25rem;
  }

  .main-controls-grid {
    flex-direction: column;
    align-items: stretch;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .certificate-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .certificate-actions {
    width: 100%;
    margin-top: 1rem;
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    justify-content: stretch;
  }

  .certificate-actions .btn {
    width: 100%;
  }

  thead {
    display: none;
  }

  tr {
    display: block;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background-color: var(--bg-primary);
  }

  td {
    display: flex;
    justify-content: space-between;
    text-align: right;
    padding: 0.6rem 0.25rem;
    border-bottom: 1px dashed color-mix(in srgb, var(--border-color) 50%, transparent);
  }

  td:last-child {
    border-bottom: none;
  }

  td:before {
    content: attr(data-label);
    font-weight: 600;
    text-align: left;
    padding-right: 1.5rem;
    color: var(--accent-primary);
    white-space: nowrap;
  }
}

@media (max-width: 640px) {
  .modal-content {
    padding: 22px;
  }
  
  .modal-title {
    font-size: 1.15rem;
  }
  
  .modal-content .btn {
    flex: 1 1 100%;
  }
}

@media (min-width: 640px) {
  #common-fields {
    grid-template-columns: auto auto;
    grid-auto-flow: column;
    column-gap: 1.5rem;
    align-items: end;
  }
}

/* --- CLASSES UTILITÁRIAS --- */
.hidden {
  display: none !important;
}

/* ============================================================
   LASMENTAL CONNECT — Mobile UX Improvements
   Adicione este bloco ao FINAL do seu style.css
   ============================================================ */

/* ============================================================
   1. MODAIS — altura máxima + scroll interno
   Problema: modais altas (settings, jobs, log) saíam da tela
   ============================================================ */

.modal-overlay {
  /* Garante padding nas bordas em telas pequenas */
  padding: 12px;
  align-items: flex-end; /* em mobile abre na parte de baixo como sheet */
}

@media (min-width: 640px) {
  .modal-overlay {
    align-items: center;
    padding: 20px;
  }
}

.modal-content {
  /* Limita a altura e ativa scroll interno */
  max-height: 92dvh; /* dvh = dynamic viewport height, funciona com teclado virtual */
  display: flex;
  flex-direction: column;
  overflow: hidden; /* o scroll fica só no corpo, não no título/footer */
}

/* Corpo rolável dentro do modal */
.modal-body,
.modal-content > .space-y-4,
.modal-content > .scrollable-list,
.modal-content > .overflow-x-auto,
.modal-content > .settings-menu {
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 0; /* essencial para o flex funcionar com overflow */
}

/* Título e footer ficam fixos */
.modal-title {
  flex-shrink: 0;
}

.modal-footer {
  flex-shrink: 0;
}

/* Em mobile, modal ocupa quase toda a largura e tem bordas arredondadas só no topo */
@media (max-width: 639px) {
  .modal-content {
    width: 100%;
    max-width: 100%;
    border-radius: 18px 18px 0 0;
    padding: 20px 18px 24px;
    max-height: 88dvh;
  }

  /* "puxador" visual no topo do sheet */
  .modal-content::before {
    content: '';
    display: block;
    width: 40px;
    height: 4px;
    background-color: var(--border-color);
    border-radius: 2px;
    margin: 0 auto 16px;
    flex-shrink: 0;
  }
}


/* ============================================================
   2. BOTÕES DE RODAPÉ DO MODAL — empilham em coluna no mobile
   Problema: dois botões lado a lado ficavam muito estreitos
   ============================================================ */

@media (max-width: 480px) {
  .modal-footer {
    flex-direction: column-reverse; /* ação principal fica em cima */
    gap: 0.5rem;
  }

  .modal-footer .btn {
    flex: 1 1 100%;
    min-width: unset;
  }
}


/* ============================================================
   3. CAMPOS DE FORMULÁRIO — common-fields empilha no mobile
   Problema: data-fim e semestre ficavam lado a lado espremidos
   ============================================================ */

#common-fields {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#common-fields > div {
  width: 100%;
}

#common-fields input[type="text"] {
  min-width: 0;
  flex: 1;
}

/* Mantém o layout original em telas maiores */
@media (min-width: 768px) {
  #common-fields {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 1.5rem;
  }

  #common-fields > div {
    width: auto;
  }
}

/* Grupo input+botão (data fim, semestre) — o botão nunca desaparece */
#common-fields .flex {
  flex-wrap: nowrap;
}

#common-fields .btn-outline {
  white-space: nowrap;
  flex-shrink: 0;
  font-size: 0.8rem;
  padding: 10px 10px;
}


/* ============================================================
   4. BOTÕES DE FILTRO — viram scroll horizontal em mobile
   Problema: 4 botões "Pendentes/Todas/Aprovadas/Rejeitadas"
   não cabiam em linha numa tela de 360px
   ============================================================ */

.flex.gap-2:has(.btn-outline-filter) {
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
  padding-bottom: 4px; /* espaço para o scroll não cortar */
}

.flex.gap-2:has(.btn-outline-filter)::-webkit-scrollbar {
  display: none;
}

.btn-outline-filter {
  flex-shrink: 0; /* impede que os botões encolham */
  font-size: 0.82rem;
  padding: 7px 12px;
}


/* ============================================================
   5. TABELAS — melhorias no layout de card mobile
   Problema: células sem data-label ficavam sem rótulo
   As células de ações ficavam muito largas
   ============================================================ */

@media (max-width: 768px) {
  /* Remove o comportamento de card de tabelas que NÃO têm a classe table-mobile-card,
     deixando só scroll horizontal nelas */
  .scrollable-list table:not(.table-mobile-card) {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }

  /* Para tabelas COM table-mobile-card, mantém o card mas melhora botões de ação */
  .table-mobile-card td:last-child {
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 0.4rem;
    border-bottom: none;
  }

  .table-mobile-card td:last-child::before {
    display: none; /* célula de ações não precisa de rótulo */
  }

  /* Botões dentro de células de ação */
  .table-mobile-card td:last-child .btn {
    padding: 8px 12px;
    font-size: 0.8rem;
    flex: 0 0 auto;
  }

  /* Células de status/badge centralizadas */
  .table-mobile-card td:has(.status-badge),
  .table-mobile-card td:has(.type-badge) {
    justify-content: space-between;
  }
}


/* ============================================================
   6. FORMULÁRIO PRINCIPAL — seção de lista de participantes
   Problema: tabela de nomes não rolava corretamente no mobile
   ============================================================ */

@media (max-width: 768px) {
  .scrollable-list {
    max-height: 55dvh; /* dinâmico — considera o teclado aberto */
  }

  /* Linha de filtro + toggle empilha */
  .flex.justify-between.items-center.mb-2 {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  #toggle-inativos-container {
    justify-content: center;
  }

  /* Controles inferiores da geração */
  .main-controls-grid {
    gap: 0.75rem;
  }

  .button-group-left,
  .button-group-right {
    width: 100%;
    justify-content: stretch;
  }

  .button-group-left .btn,
  .button-group-right .btn {
    flex: 1;
    min-width: 0;
    font-size: 0.85rem;
    padding: 10px 8px;
  }
}


/* ============================================================
   7. CABEÇALHO — título não quebra em telas muito pequenas
   ============================================================ */

@media (max-width: 400px) {
  .header-title {
    font-size: 0.85rem;
    white-space: normal;
    text-align: center;
  }

  .logo {
    height: 30px;
  }
}


/* ============================================================
   8. VALIDATION CONTAINER — input + botão empilha no mobile
   ============================================================ */

@media (max-width: 500px) {
  .validation-container {
    flex-direction: column;
  }

  .validation-container .btn {
    width: 100%;
  }
}


/* ============================================================
   9. SEÇÃO DE APROVAÇÕES — filtros e busca no mobile
   ============================================================ */

@media (max-width: 640px) {
  /* Linha de busca + filtros empilha */
  .flex.flex-col.sm\\:flex-row.justify-between {
    gap: 0.75rem;
  }

  /* Input de busca ocupa 100% */
  #requests-filter-input {
    width: 100%;
  }
}


/* ============================================================
   10. TOUCH TARGETS — tamanho mínimo de área de toque (44px)
   Recomendação WCAG e Apple HIG
   ============================================================ */

@media (max-width: 768px) {
  .btn,
  .settings-btn,
  .shortcut-tracker-btn,
  .theme-toggle {
    min-height: 44px;
    min-width: 44px;
  }

  /* Checkboxes maiores para dedos */
  input[type="checkbox"] {
    width: 1.4em;
    height: 1.4em;
  }

  /* Selects maiores */
  select.input-simple {
    min-height: 44px;
    font-size: 1rem; /* evita zoom automático no iOS */
  }

  /* Inputs com font-size < 16px causam zoom no iOS — corrigido */
  input[type="text"],
  input[type="number"],
  input[type="password"],
  input[type="email"],
  .input-simple,
  textarea {
    font-size: 1rem; /* 16px — abaixo disso o iOS dá zoom */
  }
}


/* ============================================================
   11. DASHBOARD LIGANTE — cards de certificado no mobile
   ============================================================ */

@media (max-width: 640px) {
  .certificate-card {
    padding: 0.875rem;
    gap: 0.75rem;
  }

  .certificate-icon {
    width: 38px;
    height: 38px;
  }

  .certificate-details h3 {
    font-size: 0.9rem;
  }

  .certificate-details p {
    font-size: 0.8rem;
  }

  .certificate-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .certificate-actions .btn {
    font-size: 0.8rem;
    padding: 8px 10px;
  }
}


/* ============================================================
   12. SEÇÃO DE FREQUÊNCIA — tabela rola horizontalmente
   A tabela de frequência tem muitas colunas de datas,
   não faz sentido virar card — melhor scroll horizontal
   ============================================================ */

#frequency-table-container .scrollable-list {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

#frequency-table-container table {
  min-width: 600px; /* garante que não esmaga as colunas */
}

@media (max-width: 768px) {
  #frequency-table-container thead {
    display: table-header-group; /* mantém cabeçalho visível */
  }

  #frequency-table-container tr {
    display: table-row;
    border: none;
    border-radius: 0;
    margin-bottom: 0;
    padding: 0;
    background-color: transparent;
  }

  #frequency-table-container td {
    display: table-cell;
    justify-content: unset;
    text-align: center;
    padding: 8px 6px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
  }

  #frequency-table-container td::before {
    display: none;
  }
}


/* ============================================================
   13. BOTÕES DE GRUPO (seleção de grupo/tipo) — mobile
   ============================================================ */

@media (max-width: 480px) {
  .button-grid-group {
    grid-template-columns: 1fr; /* uma coluna só em telas muito pequenas */
  }
}

/* ============================================================
   BOTÕES DE AÇÃO EM TABELA — sem quebra de linha
   ============================================================ */

.actions-cell {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.4rem;
    align-items: center;
    justify-content: flex-end;
    white-space: nowrap;
}

.actions-cell .btn {
    padding: 6px 10px;
    font-size: 0.78rem;
    white-space: nowrap;
    flex-shrink: 0;
}