/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #12121a;
  --border-color: #2a2a3a;
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --accent-blue: #4a9eff;
  --accent-green: #2ecc71;
  --accent-red: #e74c3c;
  --accent-yellow: #f1c40f;
  --accent-purple: #9b59b6;
  --accent-cyan: #00d9ff;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* ===== Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.mono {
  font-family: 'Space Mono', monospace;
}

/* ===== Navigation ===== */
.navbar {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand h1 {
  font-size: 1.5rem;
  margin: 0;
  color: var(--accent-cyan);
}

.nav-subtitle {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-left: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent-cyan);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1rem;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-cyan);
}

/* ===== Main Content ===== */
.main-content {
  min-height: calc(100vh - 180px);
  padding: 2rem 0;
}

/* ===== Cards ===== */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

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

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

/* ===== Buttons ===== */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(74, 158, 255, 0.4);
}

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

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

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

.btn-danger:hover {
  background-color: #c0392b;
  box-shadow: 0 4px 12px rgba(231, 76, 60, 0.4);
}

.btn-success {
  background-color: var(--accent-green);
  color: white;
}

.btn-success:hover {
  background-color: #27ae60;
}

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

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

/* ===== Badges ===== */
.badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-success {
  background-color: rgba(46, 204, 113, 0.2);
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
}

.badge-warning {
  background-color: rgba(241, 196, 15, 0.2);
  color: var(--accent-yellow);
  border: 1px solid var(--accent-yellow);
}

.badge-danger {
  background-color: rgba(231, 76, 60, 0.2);
  color: var(--accent-red);
  border: 1px solid var(--accent-red);
}

/* ===== Grid Layouts ===== */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1200px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ===== KPI Cards ===== */
.kpi-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--kpi-color), transparent);
}

.kpi-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.kpi-value {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: 'Space Mono', monospace;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.kpi-target {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* ===== Tables ===== */
.table-container {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--bg-card);
}

thead {
  background-color: rgba(74, 158, 255, 0.1);
  border-bottom: 2px solid var(--accent-blue);
}

th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--accent-cyan);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

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

tbody tr:hover {
  background-color: rgba(74, 158, 255, 0.05);
}

.totals-row {
  background-color: rgba(74, 158, 255, 0.1);
  font-weight: 600;
}

.totals-row td {
  border-top: 2px solid var(--accent-blue);
}

/* ===== Tabs ===== */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-color);
}

.tab {
  padding: 0.75rem 1.5rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
}

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

.tab.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

/* ===== Upload Area ===== */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 3rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  background: var(--bg-card);
}

.upload-area:hover {
  border-color: var(--accent-cyan);
  background: rgba(74, 158, 255, 0.05);
}

.upload-area.dragover {
  border-color: var(--accent-cyan);
  background: rgba(74, 158, 255, 0.1);
  transform: scale(1.02);
}

.upload-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.upload-text {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.upload-hint {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ===== Progress Bar ===== */
.progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
  margin: 1rem 0;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
  transition: width var(--transition-normal);
  border-radius: 4px;
}

/* ===== Loading Overlay ===== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(5px);
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid var(--border-color);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loading-text {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: 1.125rem;
}

/* ===== Modal ===== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 15, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  backdrop-filter: blur(5px);
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-content h2 {
  margin-bottom: 1rem;
  color: var(--accent-yellow);
}

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

/* ===== Footer ===== */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 1.5rem 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* ===== Utility Classes ===== */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

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

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.empty-state-text {
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

/* ===== Agents Page ===== */
.add-agent-form {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.agent-input {
  flex: 1;
  padding: 0.75rem 1rem;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
  cursor: pointer;
}

.agent-input:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.agent-input option {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.5rem;
}

.agents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.agent-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-fast);
}

.agent-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

.agent-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.agent-name {
  font-weight: 600;
  color: var(--text-primary);
}

.agent-date {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.btn-icon {
  background: none;
  border: none;
  color: var(--accent-red);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background-color: rgba(231, 76, 60, 0.1);
  transform: scale(1.1);
}

/* ===== Alert ===== */
.alert {
  padding: 1rem 1.5rem;
  border-radius: 8px;
  margin-bottom: 1rem;
  border-left: 4px solid;
}

.alert-info {
  background-color: rgba(74, 158, 255, 0.1);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.alert-success {
  background-color: rgba(46, 204, 113, 0.1);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.alert-warning {
  background-color: rgba(241, 196, 15, 0.1);
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
}

.alert-danger {
  background-color: rgba(231, 76, 60, 0.1);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-links {
    width: 100%;
    justify-content: space-around;
  }

  .kpi-value {
    font-size: 2rem;
  }

  table {
    font-size: 0.875rem;
  }

  th, td {
    padding: 0.5rem;
  }

  .upload-area {
    padding: 2rem 1rem;
  }
}

/* ===== Login Page ===== */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--bg-primary) 0%, #1a1a2e 100%);
  padding: 2rem;
}

.login-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 3rem;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}

.login-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.login-header h1 {
  font-size: 2rem;
  color: var(--accent-blue);
  margin-bottom: 0.5rem;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.login-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.login-form label {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
}

.login-form input {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.875rem 1rem;
  color: var(--text-primary);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.login-form input:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

.login-form input::placeholder {
  color: var(--text-secondary);
}

.error-message {
  background: rgba(231, 76, 60, 0.1);
  border: 1px solid var(--accent-red);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  color: var(--accent-red);
  font-size: 0.9rem;
}

.btn-block {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

.btn-block:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Login page - hide header */
.login-container ~ header {
  display: none;
}

/* ===== User Info in Header ===== */
.user-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}

.user-name {
  color: var(--text-primary);
  font-weight: 500;
}

.btn-logout {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

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

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

/* ===== User Role Badge ===== */
.user-role {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ===== Badges ===== */
.badge {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 500;
}

.badge-admin {
  background: rgba(155, 89, 182, 0.2);
  color: var(--accent-purple);
  border: 1px solid var(--accent-purple);
}

.badge-user {
  background: rgba(74, 158, 255, 0.2);
  color: var(--accent-blue);
  border: 1px solid var(--accent-blue);
}

.badge-warning {
  background: rgba(241, 196, 15, 0.2);
  color: var(--accent-yellow);
  border: 1px solid var(--accent-yellow);
}

.badge-success {
  background: rgba(46, 204, 113, 0.2);
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
}

/* ===== Info Message ===== */
.info-message {
  background: rgba(74, 158, 255, 0.1);
  border: 1px solid var(--accent-blue);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  color: var(--accent-blue);
  font-size: 0.9rem;
}

/* ===== Users Page ===== */
.users-container {
  margin-top: 2rem;
}

.actions-cell {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

/* ===== Modal Form Styles ===== */
.modal-content form .form-group {
  margin-bottom: 1rem;
}

.modal-content form .form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.modal-content form .form-group input,
.modal-content form .form-group select {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.625rem;
  color: var(--text-primary);
  font-size: 1rem;
}

.modal-content form .form-group input:focus,
.modal-content form .form-group select:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

.modal-content form .form-group small {
  display: block;
  margin-top: 0.25rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}