:root {
  --bg-color: #0b0f19;
  --panel-bg: rgba(23, 28, 44, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --primary-color: #6366f1; /* Indigo */
  --primary-hover: #4f46e5;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --accent-color: #8b5cf6; /* Violet */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --radius-md: 12px;
  --radius-sm: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  display: flex;
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Glassmorphism utils */
.glass {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

/* Sidebar */
.sidebar {
  width: 260px;
  height: 100%;
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  background: linear-gradient(180deg, #111827 0%, #0b0f19 100%);
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 12px;
}
.brand span { color: var(--primary-color); }

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  transition: var(--transition);
  cursor: pointer;
  font-weight: 500;
}

.nav-link:hover, .nav-link.active {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
}

.logout-btn {
  margin-top: auto;
  color: var(--danger-color);
}
.logout-btn:hover { background: rgba(239, 68, 68, 0.1); color: var(--danger-color); }

/* Main Content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  padding: 32px 48px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.topbar h1 {
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

/* Cards & Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.kpi-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 4px; height: 100%;
  background: var(--primary-color);
}
.kpi-card:nth-child(2)::before { background: var(--accent-color); }
.kpi-card:nth-child(3)::before { background: var(--success-color); }

.kpi-card h3 { font-size: 0.875rem; color: var(--text-secondary); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }
.kpi-card .value { font-size: 2rem; font-weight: 700; color: #fff; }

/* Tables */
.table-container {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  margin-top: 24px;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
}

th {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
  background: rgba(17, 24, 39, 0.5);
}

tbody tr { transition: var(--transition); }
tbody tr:hover { background: rgba(255, 255, 255, 0.02); }

/* Status Badges */
.badge {
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
}
.badge.aberto { background: rgba(245, 158, 11, 0.1); color: var(--warning-color); border: 1px solid rgba(245, 158, 11, 0.2); }
.badge.preenchido { background: rgba(99, 102, 241, 0.1); color: var(--primary-color); border: 1px solid rgba(99, 102, 241, 0.2); }
.badge.realizado { background: rgba(16, 185, 129, 0.1); color: var(--success-color); border: 1px solid rgba(16, 185, 129, 0.2); }

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  font-weight: 600;
  font-family: var(--font-family);
  transition: var(--transition);
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: var(--primary-color);
  color: white;
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}
.btn-outline:hover { background: rgba(255,255,255,0.05); }

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal-content {
  width: 100%;
  max-width: 500px;
  padding: 32px;
  transform: translateY(20px);
  transition: var(--transition);
}

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

/* Forms */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.875rem; color: var(--text-secondary); }
.form-control {
  width: 100%;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: white;
  font-family: var(--font-family);
  transition: var(--transition);
}
.form-control:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2); }

/* Login Screen */
.login-wrapper {
  position: fixed;
  inset: 0;
  background: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.login-box {
  width: 100%;
  max-width: 400px;
  padding: 48px 32px;
  text-align: center;
}

.login-box h2 { margin-bottom: 8px; font-size: 1.75rem; }
.login-box p { color: var(--text-secondary); margin-bottom: 32px; font-size: 0.875rem; }

/* Helpers */
.hidden { display: none !important; }
.view-section { display: none; animation: fadeIn 0.4s ease forwards; }
.view-section.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Filters Bar */
.filters-bar {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}
.filters-bar select, .filters-bar input {
  padding: 8px 16px;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: white;
}

/* Responsividade Mobile */
@media (max-width: 768px) {
  body {
    flex-direction: column;
    overflow-y: auto;
  }
  
  .sidebar {
    width: 100%;
    height: auto;
    padding: 16px;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  
  .brand {
    margin-bottom: 16px;
    justify-content: center;
  }
  
  #navMenu {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
  }
  
  .nav-link {
    margin-bottom: 0;
    padding: 8px 12px;
    font-size: 0.875rem;
  }
  
  .main-content {
    padding: 16px;
    overflow-y: visible;
  }
  
  .topbar {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 24px;
  }
  
  .filters-bar {
    flex-direction: column;
    align-items: stretch;
  }
  
  .filters-bar .btn, .filters-bar > div > * {
    width: 100%;
  }

  .filters-bar > div {
    flex-direction: column;
    width: 100%;
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .modal-content {
    padding: 24px 16px;
    margin: 16px;
    width: calc(100% - 32px);
  }

  /* Classes utilitárias para grids no HTML */
  .grid-responsive-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (min-width: 769px) {
  .grid-responsive-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: start;
  }
}