:root {
  /* Color System */
  --primary: #6366f1; /* Indigo */
  --primary-hover: #4f46e5;
  --primary-light: #e0e7ff;
  --dark: #1e1b4b; /* Deep Indigo */
  --dark-hover: #312e81;
  --accent: #8b5cf6; /* Violet */
  --background: #f8fafc;
  --surface: #ffffff;
  
  /* Text Colors */
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  
  /* Status Colors */
  --success: #10b981;
  --success-light: #d1fae5;
  --success-text: #065f46;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --warning-text: #92400e;
  --error: #ef4444;
  --error-light: #fee2e2;
  --error-text: #991b1b;
  --info: #3b82f6;
  --info-light: #dbeafe;
  --info-text: #1e40af;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Radii */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Layout */
  --sidebar-width: 260px;
  --header-height: 70px;
}

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

body {
  background-color: var(--background);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  outline: none;
}

ul {
  list-style: none;
}

/* Utilities */
.hidden { display: none !important; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-col { flex-direction: column; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1rem; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: white;
  color: var(--text-main);
  border: 1px solid #e2e8f0;
}

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

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

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-icon {
  padding: 0.5rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  transition: all 0.2s;
}

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

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 0.625rem 1rem;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

/* Cards */
.card {
  background-color: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid #f1f5f9;
  padding: 1.5rem;
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-icon.primary { background-color: var(--primary-light); color: var(--primary); }
.stat-icon.success { background-color: var(--success-light); color: var(--success); }
.stat-icon.warning { background-color: var(--warning-light); color: var(--warning); }
.stat-icon.danger { background-color: var(--error-light); color: var(--error); }

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

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.table th {
  text-align: left;
  padding: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid #e2e8f0;
  background-color: #f8fafc;
}

.table th:first-child { border-top-left-radius: var(--radius-md); border-bottom-left-radius: var(--radius-md); }
.table th:last-child { border-top-right-radius: var(--radius-md); border-bottom-right-radius: var(--radius-md); }

.table td {
  padding: 1rem;
  font-size: 0.875rem;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
}

.table tbody tr {
  transition: background-color 0.2s;
}

.table tbody tr:hover {
  background-color: #f8fafc;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-success { background-color: var(--success-light); color: var(--success-text); }
.badge-warning { background-color: var(--warning-light); color: var(--warning-text); }
.badge-error { background-color: var(--error-light); color: var(--error-text); }
.badge-info { background-color: var(--info-light); color: var(--info-text); }
.badge-gray { background-color: #f1f5f9; color: var(--text-muted); }

/* Status specific (Hadir, Sakit, dll) */
.status-hadir { background-color: var(--success-light); color: var(--success-text); }
.status-sakit { background-color: var(--info-light); color: var(--info-text); }
.status-izin { background-color: var(--warning-light); color: var(--warning-text); }
.status-alpa { background-color: var(--error-light); color: var(--error-text); }
.status-terlambat { background-color: #fef08a; color: #854d0e; }
.status-dispen { background-color: #e0e7ff; color: #3730a3; }

/* Segmented Control for Attendance */
.segmented-control {
  display: flex;
  background-color: #f1f5f9;
  border-radius: var(--radius-md);
  padding: 0.25rem;
  gap: 0.25rem;
}

.segment-btn {
  flex: 1;
  padding: 0.5rem;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: all 0.2s;
}

.segment-btn:hover {
  background-color: #e2e8f0;
}

.segment-btn.active {
  background-color: white;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}

.segment-btn.active[data-val="H"] { color: var(--success); }
.segment-btn.active[data-val="S"] { color: var(--info); }
.segment-btn.active[data-val="I"] { color: var(--warning); }
.segment-btn.active[data-val="A"] { color: var(--error); }

/* Layout App Shell */
.app-container {
  display: flex;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--dark);
  color: var(--text-light);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
  z-index: 40;
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  gap: 0.75rem;
}

.sidebar-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.sidebar-title {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.sidebar-nav {
  flex: 1;
  padding: 1.5rem 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: #94a3b8;
  font-weight: 500;
  transition: all 0.2s;
}

.nav-item:hover {
  background-color: rgba(255,255,255,0.05);
  color: white;
}

.nav-item.active {
  background-color: var(--primary);
  color: white;
}

.sidebar-footer {
  padding: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

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

.topbar {
  height: var(--header-height);
  background-color: var(--surface);
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 30;
}

.topbar-mobile-btn {
  display: none;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.content-area {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}

.page-header {
  margin-bottom: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.page-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Grid Layouts */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.gap-6 { gap: 1.5rem; }

/* Tabs Navigation for Petugas/Wali */
.tabs-nav {
  display: flex;
  gap: 1rem;
  border-bottom: 1px solid #e2e8f0;
  margin-bottom: 2rem;
  overflow-x: auto;
}

.tab-btn {
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  white-space: nowrap;
}

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

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 50;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-container:not(.hidden) .modal-overlay {
  opacity: 1;
}

.modal-content {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -45%);
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  z-index: 51;
  opacity: 0;
  transition: all 0.3s ease;
}

.modal-content.large {
  max-width: 800px;
}

.modal-container:not(.hidden) .modal-content {
  opacity: 1;
  transform: translate(-50%, -50%);
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1.5rem;
  border-top: 1px solid #e2e8f0;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.toast {
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transform: translateX(120%);
  transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--error); }
.toast-info .toast-icon { color: var(--info); }

/* Loading Spinner */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(2px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--primary-light);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Login Page specific */
.login-page {
  min-height: 100vh;
  display: flex;
  background: linear-gradient(135deg, var(--background) 0%, var(--primary-light) 100%);
}

.login-left {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-right {
  flex: 1;
  background: var(--dark);
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  text-align: center;
}

.login-card {
  width: 100%;
  max-width: 400px;
  background: white;
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* Responsiveness */
@media (max-width: 1024px) {
  .grid-cols-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-cols-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    height: 100vh;
    transform: translateX(-100%);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .topbar-mobile-btn {
    display: block;
  }
  
  .topbar {
    padding: 0 1rem;
  }

  .content-area {
    padding: 1rem;
  }
  
  .grid-cols-2, .grid-cols-3, .grid-cols-4 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
  
  .login-page {
    flex-direction: column;
  }
  
  .login-right {
    display: none; /* Hide illustration on mobile to focus on login */
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

/* Layout Petugas/Wali Header (Alternative Layout) */
.alt-layout .topbar {
  background-color: var(--dark);
  color: white;
}
.alt-layout .topbar .text-muted {
  color: #94a3b8;
}
.alt-layout .topbar .page-title {
  color: white;
}