/* ==========================================================================
   CAROL BI & ANALYTICS - CORPORATE DESIGN SYSTEM
   ========================================================================== */

:root {
  /* Colors */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-dark: #1e40af;
  
  --secondary: #475569;
  --secondary-light: #f1f5f9;
  
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-sidebar: #0f172a;
  --bg-sidebar-hover: #1e293b;
  --bg-sidebar-active: #334155;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;
  
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  
  --success: #10b981;
  --success-bg: #ecfdf5;
  --success-text: #065f46;
  
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --warning-text: #92400e;
  
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --danger-text: #991b1b;
  
  --info: #0284c7;
  --info-bg: #f0f9ff;
  --info-text: #075985;
  
  /* 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);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  /* Layout */
  --sidebar-width: 260px;
  --header-height: 64px;
}

/* Reset & Box Sizing */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  font-size: 14px;
  line-height: 1.5;
}

/* ==========================================================================
   LAYOUT STRUCTURE
   ========================================================================== */

#app-container {
  display: flex;
  width: 100%;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  color: var(--text-white);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: width 0.3s ease;
}

.sidebar-header {
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.4);
}

.brand-text h1 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-text span {
  font-size: 11px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-menu {
  flex: 1;
  padding: 20px 12px;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-light);
  cursor: pointer;
  font-weight: 500;
  transition: all 0.2s ease;
  user-select: none;
}

.sidebar-item:hover {
  background-color: var(--bg-sidebar-hover);
  color: #fff;
}

.sidebar-item.active {
  background-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.sidebar-item svg {
  width: 18px;
  height: 18px;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Main Content Area */
.main-wrapper {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: calc(100% - var(--sidebar-width));
}

/* Header */
.top-header {
  height: var(--header-height);
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 90;
  box-shadow: var(--shadow-sm);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.page-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
}

.badge-success {
  background-color: var(--success-bg);
  color: var(--success-text);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-warning {
  background-color: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-danger {
  background-color: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge-info {
  background-color: var(--info-bg);
  color: var(--info-text);
  border: 1px solid rgba(2, 132, 199, 0.2);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
}

/* View Container */
.content-view {
  padding: 28px;
  flex: 1;
  display: none;
}

.content-view.active {
  display: block;
}

/* ==========================================================================
   BUTTONS & INPUTS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  outline: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--secondary);
  border-color: var(--border-color);
}
.btn-secondary:hover {
  background-color: var(--secondary-light);
  color: var(--text-main);
}

.btn-danger {
  background-color: var(--danger);
  color: #fff;
}
.btn-danger:hover {
  background-color: #dc2626;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 13px;
  color: var(--text-main);
  background-color: var(--bg-surface);
  transition: border-color 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ==========================================================================
   CARDS & KPI STATS
   ========================================================================== */

.card {
  background-color: var(--bg-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-bottom: 24px;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.card-body {
  padding: 20px;
}

/* KPI Cards Grid */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.kpi-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.kpi-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.kpi-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 6px;
}

.kpi-subtitle {
  font-size: 12px;
  color: var(--text-light);
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.chart-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  min-height: 320px;
  display: flex;
  flex-direction: column;
}

.chart-container {
  position: relative;
  flex: 1;
  width: 100%;
  min-height: 250px;
}

/* Filters Bar */
.filter-bar {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.filter-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

/* ==========================================================================
   IMPORT WIZARD (SECTION 5, 6, 7)
   ========================================================================== */

.wizard-steps {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background-color: #fafafa;
}

.step-item {
  flex: 1;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-light);
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.step-item.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background-color: #fff;
}

.step-item.completed {
  color: var(--success);
}

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--border-color);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

.step-item.active .step-num {
  background-color: var(--primary);
  color: #fff;
}

.step-item.completed .step-num {
  background-color: var(--success);
  color: #fff;
}

/* Upload Dropzone */
.dropzone {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-md);
  padding: 48px 24px;
  text-align: center;
  background-color: #f8fafc;
  cursor: pointer;
  transition: all 0.2s ease;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.dropzone-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  color: var(--primary);
}

.dropzone h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.dropzone p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* Validation Result Box (Section 6) */
.validation-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 24px;
  background-color: #fff;
}

.validation-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.val-metric-box {
  padding: 16px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 14px;
}

.val-metric-box.valid {
  background-color: var(--success-bg);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.val-metric-box.warning {
  background-color: var(--warning-bg);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.val-metric-box.total {
  background-color: var(--primary-light);
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.val-metric-val {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.1;
}

.val-breakdown-list {
  background-color: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 24px;
  list-style: none;
}

.val-breakdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  font-size: 13px;
}

/* Normalization Form */
.normalization-options {
  background-color: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 24px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

/* ==========================================================================
   DATA TABLE (SECTION 15)
   ========================================================================== */

.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-sm);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.data-table th {
  background-color: #f1f5f9;
  color: var(--secondary);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.data-table th.sortable {
  cursor: pointer;
  user-select: none;
}

.data-table th.sortable:hover {
  background-color: #e2e8f0;
  color: var(--text-main);
}

.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  white-space: nowrap;
}

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

/* Pagination Bar */
.pagination-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-top: 1px solid var(--border-color);
  background-color: #fff;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

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

.modal-container {
  background-color: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  width: 90%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* Notification Toast */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background-color: var(--bg-sidebar);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  animation: slideIn 0.3s ease;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.warning { border-left: 4px solid var(--warning); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Responsive adjustments */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 80px;
  }
  .brand-text, .sidebar-item span, .sidebar-footer {
    display: none;
  }
  .sidebar-header {
    justify-content: center;
    padding: 16px 0;
  }
  .sidebar-item {
    justify-content: center;
    padding: 12px 0;
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .validation-summary-grid {
    grid-template-columns: 1fr;
  }
  .top-header {
    padding: 0 16px;
  }
  .content-view {
    padding: 16px;
  }
}

/* ==========================================================================
   LOGIN SCREEN
   ========================================================================== */

#login-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 20% 20%, #1e3a8a 0%, #0f172a 90%);
  padding: 20px;
  box-sizing: border-box;
}

.login-card {
  background-color: #ffffff;
  width: 100%;
  max-width: 420px;
  border-radius: 16px;
  padding: 42px 36px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  position: relative;
  border: 1px solid rgba(226, 232, 240, 0.8);
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.login-brand-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, #3b82f6, #1d4ed8);
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 24px;
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
  margin-bottom: 16px;
}

.login-title {
  font-size: 20px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.login-subtitle {
  font-size: 13px;
  color: #64748b;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-label {
  font-size: 13px;
  font-weight: 600;
  color: #334155;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-prefix-icon {
  position: absolute;
  left: 12px;
  color: #94a3b8;
  pointer-events: none;
  display: flex;
  align-items: center;
}

.input-wrapper input {
  width: 100%;
  padding: 11px 40px 11px 38px;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 14px;
  color: #0f172a;
  background-color: #f8fafc;
  transition: all 0.2s ease;
}

.input-wrapper input:focus {
  outline: none;
  background-color: #fff;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-toggle-eye {
  position: absolute;
  right: 10px;
  background: none;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color 0.2s ease;
}

.btn-toggle-eye:hover {
  color: #334155;
}

.login-error-alert {
  background-color: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  display: none;
  align-items: center;
  gap: 10px;
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

.btn-login {
  width: 100%;
  padding: 12px 18px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  margin-top: 6px;
}

.btn-login:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

.btn-login:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.login-footer-security {
  margin-top: 24px;
  text-align: center;
  font-size: 11px;
  color: #94a3b8;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}