:root {
  --bg-color: #0b0f19;
  --surface-color: rgba(22, 29, 49, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --primary-color: #7c3aed;
  --primary-glow: rgba(124, 58, 237, 0.15);
  --success-color: #10b981;
  --success-glow: rgba(16, 185, 129, 0.15);
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.15);
  --font-sans: 'Outfit', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Stunning dynamic glow backdrop */
.glass-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: 
    radial-gradient(circle at 10% 20%, rgba(124, 58, 237, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

.app-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Header style */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 2rem;
  height: 2rem;
  color: var(--primary-color);
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo-text span {
  color: var(--primary-color);
}

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

.user-selector label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.custom-select-wrapper select {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 2rem 0.5rem 1rem;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239ca3af'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
}

.custom-select-wrapper select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Dashboard Sections */
.dashboard-section {
  display: none;
  animation: fadeIn 0.4s ease-out;
}

.dashboard-section.active {
  display: block;
}

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

/* Welcome Banner */
.welcome-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(22, 29, 49, 0.4) 100%);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 2rem;
  backdrop-filter: blur(10px);
}

.welcome-banner h2 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.welcome-banner p {
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background-color: #8b5cf6;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

/* PTO Cards */
.balances-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.balance-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 200px;
  position: relative;
  overflow: hidden;
}

.balance-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.balance-card.vacation::before { background-color: var(--primary-color); }
.balance-card.sick::before { background-color: var(--success-color); }
.balance-card.personal::before { background-color: var(--warning-color); }

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

.card-header h3 {
  font-size: 1.1rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.leave-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
}

.vacation .leave-badge { background-color: var(--primary-glow); color: #c084fc; }
.sick .leave-badge { background-color: var(--success-glow); color: #34d399; }
.personal .leave-badge { background-color: rgba(245, 158, 11, 0.15); color: #fbbf24; }

.balance-numbers {
  margin: 1rem 0;
}

.remaining-val {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
}

.remaining-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.balance-footer {
  display: flex;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-color);
  padding-top: 0.75rem;
}

/* Skeleton loader */
.skeleton-card {
  height: 200px;
  background-color: var(--surface-color);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {
  0% { opacity: 0.6; }
  50% { opacity: 0.3; }
  100% { opacity: 0.6; }
}

/* Table Area */
.pto-history-card, .manager-requests-card {
  width: 100%;
}

.pto-history-card h3, .manager-requests-card h3 {
  margin-bottom: 1.25rem;
  font-size: 1.25rem;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

th {
  background-color: rgba(255, 255, 255, 0.02);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

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

.empty-state {
  text-align: center;
  color: var(--text-secondary);
  padding: 2.5rem;
}

/* Request Status Badges */
.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 99px;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-pill.pending { background-color: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.status-pill.approved { background-color: var(--success-glow); color: #34d399; }
.status-pill.denied { background-color: var(--danger-glow); color: #f87171; }

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

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

.modal-content {
  background-color: #111827;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  width: 100%;
  max-width: 500px;
  padding: 2rem;
  transform: translateY(-20px);
  transition: var(--transition);
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

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

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

/* Form Styles */
.form-group {
  margin-bottom: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input, select, textarea {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.error-banner {
  background-color: var(--danger-glow);
  border: 1px solid var(--danger-color);
  color: #f87171;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
}

.error-banner.hidden {
  display: none;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* Manager review list design */
.action-btn-group {
  display: flex;
  gap: 0.5rem;
}

.action-btn {
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.action-btn.approve {
  background-color: var(--success-glow);
  color: #34d399;
}
.action-btn.approve:hover {
  background-color: #10b981;
  color: white;
}

.action-btn.deny {
  background-color: var(--danger-glow);
  color: #f87171;
}
.action-btn.deny:hover {
  background-color: #ef4444;
  color: white;
}