:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --bg-color: #0f172a;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --card-bg: rgba(30, 41, 59, 0.45);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.12);
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
}

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

body {
  background: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.15), transparent 25%),
    radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.12), transparent 25%),
    radial-gradient(circle at 50% 80%, rgba(239, 68, 68, 0.08), transparent 30%);
  background-attachment: fixed;
  background-size: cover;
  overflow-x: hidden;
}

/* Glassmorphism Classes */
.glass {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}

.glass:hover {
  border-color: var(--glass-highlight);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.glass-panel {
  padding: 24px;
  margin-bottom: 24px;
}

/* Typography */
h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: #fff;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; color: var(--text-main); }

p {
  color: var(--text-muted);
  line-height: 1.6;
}

/* Layout Maps */
#app {
  width: 100%;
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 280px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-right: 1px solid var(--glass-border);
  transition: transform 0.3s ease;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 32px;
  color: var(--primary);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  color: var(--text-muted);
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
}

.nav-link:hover, .nav-link.active {
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
}

/* Main Content */
.main-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.topbar {
  height: 80px;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--glass-border);
}

.content-area {
  flex: 1;
  padding: 32px;
  overflow-y: auto;
}

/* Login Container */
.login-container {
  width: 100%;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-box {
  width: 400px;
  padding: 40px;
  text-align: center;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 20px;
  text-align: left;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-size: 1rem;
  transition: all 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-success { background: var(--success); color: white; }
.btn-warning { background: var(--warning); color: #1e293b; }
.btn-warning:hover { background: #d97706; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(245,158,11,0.4); }
.btn-info    { background: #06b6d4; color: white; }
.btn-info:hover { background: #0891b2; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(6,182,212,0.4); }

/* Tab button — inactive state */
.btn-tab {
  background: var(--card-bg);
  color: var(--text-muted);
  border: 1px solid var(--glass-border);
}
.btn-tab:hover {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
  border-color: var(--primary);
}

.btn-block {
  width: 100%;
}

/* Grid & Layout */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-card .value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 16px;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
}

th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.badge {
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.badge.hadir { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.badge.tidak_hadir { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.badge.izin { background: rgba(245, 158, 11, 0.2); color: var(--warning); }

/* Animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-badge {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.fade-in {
  animation: fadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 1000;
  pointer-events: none;
}

.toast {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  padding: 16px 24px;
  border-radius: 12px;
  color: white;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transform: translateX(120%);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  pointer-events: auto;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast i {
  font-size: 1.5rem;
}

.toast-success { border-left: 4px solid var(--success); }
.toast-success i { color: var(--success); }
.toast-danger { border-left: 4px solid var(--danger); }
.toast-danger i { color: var(--danger); }
.toast-warning { border-left: 4px solid var(--warning); }
.toast-warning i { color: var(--warning); }
.toast-info { border-left: 4px solid var(--primary); }
.toast-info i { color: var(--primary); }

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
}

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

.modal-content {
  width: 100%;
  max-width: 500px;
  transform: scale(0.95);
  transition: all 0.3s;
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

/* User Profile Dropdown Simulator */
.user-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

/* Responsive & Grid Fallbacks */

/* Tablet & Intermediate Desktop */
@media (max-width: 1024px) {
  .grid-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Base Mobile */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    transform: translateX(-100%);
    z-index: 50;
    height: 100vh;
    background: var(--card-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    width: 260px;
    box-shadow: 10px 0 30px rgba(0,0,0,0.5);
  }
  .sidebar.active {
    transform: translateX(0);
  }
  .topbar {
    padding: 0 20px;
    height: 70px;
  }
  .content-area {
    padding: 20px;
  }
  .grid-cards {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  /* Mobile Sidebar Toggle Button Generator Support (if needed via JS) */
  .mobile-menu-btn {
    display: block !important;
  }
}

/* Small Device Adjustments */
@media (max-width: 480px) {
  .topbar h2 {
    font-size: 1.25rem;
  }
  .user-profile .avatar {
    width: 32px;
    height: 32px;
  }
  .toast-container {
    right: 16px;
    bottom: 16px;
    left: 16px;
  }
  .toast {
    width: 100%;
    margin: 0;
  }
  .login-box {
    width: 90%;
    padding: 30px 20px;
  }
  .stat-card .value {
    font-size: 2rem;
  }
}