/* ================ BASE STYLES ================ */
:root {
  --primary: #2575fc;
  --primary-light: #6a8ffc;
  --secondary: #6a11cb;
  --secondary-light: #8d44e0;
  --success: #4CAF50;
  --success-light: #6bc06f;
  --danger: #dc3545;
  --danger-light: #e4606d;
  --warning: #ffc107;
  --info: #17a2b8;
  --light: #f8f9fa;
  --dark: #343a40;
  --gray: #6c757d;
  --light-gray: #e9ecef;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f7fa;
  color: var(--dark);
  line-height: 1.6;
  min-height: 100vh;
}

/* ================ APP CONTAINER ================ */
.app-container {
  padding: 2rem 1rem;
  max-width: 1400px;
  margin: 0 auto;
  animation: fadeIn 0.5s ease-out;
}

.app-header {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  color: white;
  padding: 2.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.app-header:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.app-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
  transform: rotate(30deg);
}

.app-header h1 {
  font-weight: 700;
  margin-bottom: 0.5rem;
  position: relative;
  font-size: 2.5rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.app-header .lead {
  font-weight: 300;
  opacity: 0.9;
  font-size: 1.2rem;
}

/* ================ FORM STYLES ================ */
.form-container {
  background: white;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
  border-left: 5px solid var(--primary);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.form-container:hover {
  box-shadow: var(--shadow-lg);
}

.form-container h2 {
  color: var(--primary);
  margin-bottom: 2rem;
  font-weight: 600;
  position: relative;
  padding-bottom: 0.75rem;
  font-size: 1.8rem;
}

.form-container h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
}

.form-control {
  border-radius: 6px;
  padding: 0.75rem 1rem;
  border: 1px solid var(--light-gray);
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 0.25rem rgba(37, 117, 252, 0.15);
}

.form-label {
  font-weight: 900;
  margin-bottom: 0.5rem;
  color: var(--gray);
}

.submit-btn {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  border: none;
  padding: 12px 28px;
  font-weight: 600;
  margin-top: 1.5rem;
  transition: var(--transition);
  border-radius: 8px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
}

.submit-btn::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 70%);
  transform: rotate(30deg);
}

.submit-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 15px rgba(37, 117, 252, 0.3);
}

/* ================ TABLE STYLES ================ */
.table-container {
  background: white;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  border-left: 5px solid var(--success);
  transition: var(--transition);
}

.table-container:hover {
  box-shadow: var(--shadow-lg);
}

.table-container h2 {
  color: var(--success);
  margin-bottom: 2rem;
  font-weight: 600;
  font-size: 1.8rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.table-container h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--success), #2E7D32);
  border-radius: 2px;
}

.table {
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 8px;
  overflow: hidden;
}

.table thead th {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  border: none;
  padding: 1rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.85rem;
}

.table tbody td {
  padding: 1rem;
  vertical-align: middle;
  border-top: 1px solid var(--light-gray);
}

.table-hover tbody tr:hover {
  background-color: rgba(106, 17, 203, 0.08);
  transform: scale(1.01);
}

.table-hover tbody tr {
  transition: var(--transition);
}

.download-btn {
  background: linear-gradient(135deg, var(--success) 0%, var(--success-light) 100%);
  border: none;
  padding: 12px 28px;
  font-weight: 600;
  border-radius: 8px;
  transition: var(--transition);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
}

.download-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 15px rgba(76, 175, 80, 0.3);
}

/* ================ BADGES ================ */
.badge {
  font-weight: 600;
  padding: 0.5em 1em;
  border-radius: 50px;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}

/* ================ MODAL STYLES ================ */
.modal-content {
  border-radius: 12px;
  overflow: hidden;
  border: none;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: white;
  padding: 1.5rem;
  border-bottom: none;
}

.modal-title {
  font-weight: 600;
}

.modal-body {
  padding: 2rem;
}

.modal-footer {
  border-top: none;
  padding: 1.5rem;
  background-color: var(--light);
}

/* ================ PAGINATION ================ */
.pagination .page-item.active .page-link {
  background-color: var(--primary);
  border-color: var(--primary);
}

.pagination .page-link {
  color: var(--primary);
  border-radius: 6px !important;
  margin: 0 4px;
  border: 1px solid var(--light-gray);
  transition: var(--transition);
}

.pagination .page-link:hover {
  background-color: var(--light);
}

/* ================ ANIMATIONS ================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from { transform: translateX(-20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInRight {
  from { transform: translateX(20px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

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

/* ================ RESPONSIVE ADJUSTMENTS ================ */
@media (max-width: 992px) {
  .app-header {
    padding: 2rem;
  }
  
  .form-container, .table-container {
    padding: 2rem;
  }
}

@media (max-width: 768px) {
  .app-container {
    padding: 1.5rem;
  }
  
  .app-header h1 {
    font-size: 2rem;
  }
  
  .form-container h2, .table-container h2 {
    font-size: 1.6rem;
  }
  
  .table-responsive {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 576px) {
  .app-header {
    padding: 1.5rem;
  }
  
  .app-header h1 {
    font-size: 1.8rem;
  }
  
  .form-container, .table-container {
    padding: 1.5rem;
  }
  
  .btn {
    width: 100%;
    margin-bottom: 0.75rem;
  }
  
  .d-flex.justify-content-between {
    flex-direction: column;
    gap: 1rem;
  }
}