:root {
  --bg-color: #f4f7fe;
  --sidebar-bg: #111c44;
  --sidebar-text: #a0aec0;
  --sidebar-text-active: #ffffff;
  --primary-color: #4318ff;
  --primary-hover: #3311db;
  --card-bg: #ffffff;
  --text-main: #2b3674;
  --text-secondary: #a3aed1;
  --border-color: #e2e8f0;
  
  --success: #05cd99;
  --warning: #ffce20;
  --danger: #ee5d50;
  --info: #3965ff;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
}

.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 250px;
  background-color: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.sidebar-header {
  height: 80px;
  display: flex;
  align-items: center;
  padding: 0 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.logo {
  color: white;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.sidebar-nav {
  padding: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
  overflow-y: auto;
}

.nav-item {
  padding: 12px 24px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}

.nav-item:hover, .nav-item.active {
  color: var(--sidebar-text-active);
  background: rgba(255,255,255,0.05);
}
.nav-item.active {
  border-left-color: var(--primary-color);
}

/* Main Wrapper */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  height: 80px;
  background: var(--bg-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
}

.topbar-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.user-profile {
  font-weight: 600;
  color: var(--text-secondary);
  background: white;
  padding: 8px 16px;
  border-radius: 20px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.02);
}

/* Content Area */
.content-area {
  flex: 1;
  padding: 0 40px 40px;
  overflow-y: auto;
}

/* Common UI */
.card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.02);
  margin-bottom: 24px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Button */
.btn {
  padding: 10px 20px;
  border-radius: 10px;
  border: none;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.9rem;
}
.btn-primary {
  background: var(--primary-color);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-hover);
}
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: #333; }

/* Table */
.table-container {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}
th {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.85rem;
  text-transform: uppercase;
}
td {
  font-size: 0.95rem;
  color: var(--text-main);
  font-weight: 500;
}
.select-col {
  width: 96px;
  min-width: 96px;
  text-align: left;
}
.select-header {
  display: flex;
  align-items: center;
  gap: 10px;
}
.table-checkbox {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--primary-color);
  flex: 0 0 auto;
}
td.select-col {
  background: rgba(67, 24, 255, 0.03);
}
td.select-col,
th.select-col {
  border-right: 1px solid var(--border-color);
}
.list-select-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.list-select-box {
  padding-top: 2px;
}

/* Badges */
.badge {
  padding: 5px 10px;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
}
.badge-success { background: rgba(5, 205, 153, 0.1); color: var(--success); }
.badge-warning { background: rgba(255, 206, 32, 0.1); color: #d4a000; }
.badge-danger { background: rgba(238, 93, 80, 0.1); color: var(--danger); }
.badge-info { background: rgba(57, 101, 255, 0.1); color: var(--info); }
.badge-neutral { background: var(--border-color); color: var(--text-secondary); }

/* Forms */
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}
.form-control {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  font-size: 0.95rem;
  transition: all 0.2s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* Grid Layouts */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}
.stat-card {
  background: white;
  padding: 20px;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.02);
}
.stat-card-title {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 8px;
}
.stat-card-val {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-main);
}

.modal-backdrop {
  position: fixed;
  top:0; left:0; width:100%; height:100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  overflow-y: auto;
  padding: 24px;
}
.modal-backdrop.show {
  opacity: 1;
  pointer-events: all;
}
.modal-content {
  background: white;
  width: 500px;
  max-width: 90%;
  border-radius: 20px;
  padding: 24px;
  transform: translateY(20px);
  transition: transform 0.2s;
  margin: auto 0;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.18);
}
.modal-content-wide {
  width: min(760px, 96vw);
}
.modal-backdrop.show .modal-content {
  transform: translateY(0);
}
.modal-actions {
  margin-top: 24px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  position: sticky;
  bottom: -24px;
  background: white;
  padding-top: 16px;
  padding-bottom: 4px;
  border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
  .modal-backdrop {
    padding: 12px;
  }

  .modal-content {
    max-width: 100%;
    max-height: calc(100vh - 24px);
    padding: 18px;
    border-radius: 16px;
  }

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

/* Toast & Loading */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.toast {
  background: white;
  color: var(--text-main);
  padding: 16px 24px;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.1);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideIn 0.3s forwards;
  border-left: 4px solid var(--primary-color);
}
.toast.toast-success { color: var(--success); border-left-color: var(--success); }
.toast.toast-danger { color: var(--danger); border-left-color: var(--danger); }
.toast.toast-warning { color: var(--warning); border-left-color: var(--warning); }
.toast.hide { animation: slideOut 0.3s forwards; }

@keyframes slideIn { from { transform: translateX(120%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes slideOut { to { transform: translateX(120%); opacity: 0; } }

.btn.loading {
  pointer-events: none;
  opacity: 0.7;
  cursor: not-allowed;
}