:root {
  --sidebar-width: 280px;
  --bg-dark: #0f111a;
  --card-bg: #1e212d;
  --accent: #e94560;
  --accent-light: #ff5f7a;
  --secondary: #16213e;
  --text-light: #e8eaf6;
  --text-muted: #9e9eb5;
  --border: #2d303c;
  --success: #27ae60;
  --warning: #f1c40f;
  --radius: 12px;
  --transition: all 0.3s ease;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: 'Outfit', 'Inter', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
}

/* APP CONTAINER */
.app-container {
  display: flex;
  min-height: 100vh;
}

/* SIDEBAR */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--secondary);
  border-right: 1px solid var(--border);
  padding: 30px 20px;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
  z-index: 100;
  transition: var(--transition);
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 50px;
  padding: 0 10px;
}

.logo i {
  font-size: 24px;
  color: var(--accent);
}

.logo span {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 1px;
}

.nav-menu {
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  text-decoration: none;
  color: var(--text-muted);
  border-radius: var(--radius);
  margin-bottom: 10px;
  transition: var(--transition);
  font-weight: 500;
}

.nav-item i {
  width: 20px;
  text-align: center;
}

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

.nav-item.active {
  background-color: var(--accent);
  color: #fff;
  box-shadow: 0 5px 15px rgba(233, 69, 96, 0.3);
}

.sidebar-footer {
  padding: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  margin-top: auto;
}

/* CONTENT */
.content {
  flex-grow: 1;
  margin-left: var(--sidebar-width);
  padding: 0 40px 40px;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 25px 0;
  margin-bottom: 30px;
  border-bottom: 1px solid var(--border);
}

.search-box {
  background-color: var(--card-bg);
  border-radius: 50px;
  padding: 10px 25px;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 350px;
  border: 1px solid var(--border);
}

.search-box i {
  color: var(--text-muted);
}

.search-box input {
  background: transparent;
  border: none;
  color: #fff;
  width: 100%;
  font-family: inherit;
}

.search-box input:focus {
  outline: none;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 15px;
}

.user-info {
  text-align: right;
}

.user-name {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
}

.user-role {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.avatar {
  width: 45px;
  height: 45px;
  border-radius: 50%;
  border: 2px solid var(--accent);
}

/* PAGE CONTENT */
.page-content {
  max-width: 1100px;
}

.welcome-header {
  margin-bottom: 40px;
}

.welcome-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.welcome-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* CARDS */
.card {
  background-color: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-bottom: 30px;
  transition: var(--transition);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 25px;
}

.header-icon {
  width: 48px;
  height: 48px;
  background-color: rgba(233, 69, 96, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 20px;
}

.header-text h3 {
  font-size: 1.15rem;
  font-weight: 600;
}

.header-text span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.header-actions {
  margin-left: auto;
}

/* UPLOAD SECTION */
.upload-container {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}

.upload-container:hover, .upload-container.drag-over {
  border-color: var(--accent);
  background-color: rgba(233, 69, 96, 0.05);
}

.upload-ui i {
  font-size: 50px;
  color: var(--text-muted);
  margin-bottom: 15px;
  opacity: 0.5;
}

.browse-btn {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
}

.file-list {
  margin-top: 25px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
  text-align: left;
}

.file-item {
  background-color: rgba(255, 255, 255, 0.05);
  padding: 10px 15px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
}

.file-item i {
  color: var(--accent);
}

.file-item .remove-file {
  margin-left: auto;
  cursor: pointer;
  color: var(--text-muted);
}

/* ACTION GRID */
.action-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  border-radius: 10px;
  background-color: var(--bg-dark);
  border: 1px solid var(--border);
  color: #fff;
  font-family: inherit;
  font-size: 0.95rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
}

.ratechart-info {
  margin-top: 15px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.btn {
  padding: 14px 25px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(233, 69, 96, 0.3);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-light);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.btn-success {
  background-color: var(--success);
  color: #fff;
}

.btn-sm {
  padding: 8px 15px;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* DATA TABLE */
.table-responsive {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

.data-table th {
  text-align: left;
  padding: 15px;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--border);
}

.data-table td {
  padding: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  font-size: 0.95rem;
}

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

.total-row td {
  background-color: rgba(255, 255, 255, 0.02);
  font-weight: 700;
  color: var(--accent);
  font-size: 1.1rem !important;
}

/* EDITABLE CELLS */
[contenteditable="true"] {
  outline: none;
  transition: var(--transition);
  border-radius: 4px;
}

[contenteditable="true"]:hover {
  background-color: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 0 1px var(--border);
}

[contenteditable="true"]:focus {
  background-color: rgba(233, 69, 96, 0.05);
  box-shadow: 0 0 0 1px var(--accent);
}

.new-row td[contenteditable="true"] {
  border: 1px dashed var(--accent) !important;
}

/* LOADER OVERLAY */
.loader-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 17, 26, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  text-align: center;
  visibility: hidden;
  opacity: 0;
  transition: var(--transition);
}

.loader-overlay.show {
  visibility: visible;
  opacity: 1;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 5px solid rgba(233, 69, 96, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

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

/* RATE CHART MASTER */
.list-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 600px;
  overflow-y: auto;
  padding-right: 5px;
}

.list-group::-webkit-scrollbar {
  width: 4px;
}

.list-group::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 10px;
}

.list-group-item {
  padding: 15px;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.list-group-item:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--accent);
}

.list-group-item.active {
  background-color: rgba(233, 69, 96, 0.1);
  border-color: var(--accent);
  border-left-width: 4px;
}

.list-group-item h5 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.list-group-item span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.badge {
  padding: 5px 12px;
  background-color: rgba(233, 69, 96, 0.1);
  color: var(--accent);
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
}

#rate-details-view h4 {
  font-size: 1.5rem;
  font-weight: 700;
}

.mb-4 { margin-bottom: 24px; }
.mt-3 { margin-top: 16px; }
.d-flex { display: flex; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

/* SELECT2 PREMIUM DARK THEME */
.select2-container {
  width: 100% !important;
}

.select2-container--default .select2-selection--single {
  background-color: var(--bg-dark) !important;
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  height: 52px !important;
  display: flex !important;
  align-items: center !important;
  transition: var(--transition) !important;
  padding: 0 10px !important;
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
  color: #fff !important;
  padding-left: 10px !important;
  font-size: 0.95rem !important;
  font-weight: 500 !important;
  line-height: normal !important;
}

.select2-container--default .select2-selection--single .select2-selection__placeholder {
  color: var(--text-muted) !important;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
  height: 50px !important;
  right: 15px !important;
}

.select2-container--default .select2-selection--single .select2-selection__arrow b {
  border-color: var(--text-muted) transparent transparent transparent !important;
  border-width: 6px 5px 0 5px !important;
}

.select2-container--default.select2-container--open .select2-selection--single {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.1) !important;
}

.select2-dropdown {
  background-color: var(--card-bg) !important;
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  box-shadow: var(--shadow) !important;
  color: #fff !important;
  margin-top: 8px !important;
  overflow: hidden !important;
  z-index: 1000 !important;
  animation: selectDropDownGrow 0.2s ease-out;
}

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

.select2-search--dropdown {
  background-color: var(--card-bg) !important;
  padding: 12px !important;
  border-bottom: 1px solid var(--border) !important;
}

.select2-search--dropdown .select2-search__field {
  background-color: var(--bg-dark) !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
  color: #fff !important;
  padding: 10px 15px !important;
  outline: none !important;
}

.select2-search--dropdown .select2-search__field:focus {
  border-color: var(--accent) !important;
}

.select2-results__option {
  padding: 12px 18px !important;
  font-size: 0.9rem !important;
  transition: var(--transition) !important;
}

.select2-container--default .select2-results__option--highlighted[aria-selected] {
  background-color: var(--accent) !important;
  color: #fff !important;
}

.select2-container--default .select2-results__option[aria-selected="true"] {
  background-color: rgba(233, 69, 96, 0.15) !important;
  color: var(--accent) !important;
}

.select2-container--default .select2-selection--single .select2-selection__clear {
  color: var(--accent) !important;
  margin-right: 25px !important;
  font-size: 1.2rem !important;
  font-weight: 300 !important;
}

.select2-results__option {
  padding: 12px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.select2-container--default .select2-selection--single .select2-selection__clear {
  color: var(--accent);
  margin-right: 10px;
  font-size: 1.2rem;
}

@media (max-width: 900px) {
  .sidebar { width: 80px; padding: 30px 10px; }
  .logo span, .nav-item span, .user-info { display: none; }
  .content { margin-left: 80px; }
  .action-grid { grid-template-columns: 1fr; }
  .row { flex-direction: column; }
  .col-md-4 { border-right: none !important; border-bottom: 1px solid #eee; padding-bottom: 20px; margin-bottom: 20px; }
}