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

:root {
  --bg-primary: #0f1419;
  --bg-secondary: #1a1f26;
  --bg-card: #1e242d;
  --bg-input: #252b34;
  --border: #2d3540;
  --border-strong: #3a4250;
  --text-primary: #e6e9ef;
  --text-secondary: #9ba3af;
  --text-muted: #6b7280;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.08), transparent 50%), var(--bg-primary);
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 24px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.logo-block {
  text-align: center;
  margin-bottom: 32px;
}

.logo-circle {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #6366f1);
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.logo-circle.small {
  width: 36px;
  height: 36px;
  font-size: 18px;
  border-radius: 8px;
  margin-bottom: 0;
}

.login-card h1 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 4px;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 14px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-text {
  text-align: center;
  margin-top: 24px;
  color: var(--text-muted);
  font-size: 13px;
}

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

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="date"],
.form-group select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.15s;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ba3af' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.hint {
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 2px;
}

.btn {
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

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

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

.btn-full {
  width: 100%;
  padding: 12px;
}

.btn-link {
  background: none;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  border: none;
  padding: 4px 8px;
  cursor: pointer;
}

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

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.dashboard-body {
  background: var(--bg-primary);
}

.topbar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 16px;
}

.user-block {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-name {
  color: var(--text-secondary);
  font-size: 14px;
}

.dashboard-main {
  padding: 32px 24px;
}

.dashboard-container {
  max-width: 760px;
  margin: 0 auto;
}

.page-header {
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 8px;
}

.lead {
  color: var(--text-secondary);
  font-size: 15px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
}

.export-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.form-section h2 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.quick-presets {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.preset-btn {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}

.preset-btn:hover,
.preset-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.date-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

@media (max-width: 540px) {
  .date-grid {
    grid-template-columns: 1fr;
  }
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  padding: 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.15s;
}

.checkbox-label:hover {
  border-color: var(--border-strong);
}

.checkbox-label input[type="checkbox"] {
  margin-top: 2px;
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--accent);
}

.checkbox-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.checkbox-text strong {
  font-size: 14px;
  color: var(--text-primary);
}

.checkbox-text small {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.4;
}

.preview-section {
  background: var(--bg-input);
  border-radius: 8px;
  padding: 16px;
}

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

.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.metric-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
}

.metric-label {
  color: var(--text-secondary);
  font-size: 13px;
}

.loading {
  color: var(--text-secondary);
  font-size: 14px;
}

.error {
  color: #fca5a5;
  font-size: 14px;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

@media (max-width: 540px) {
  .form-actions {
    flex-direction: column-reverse;
  }
  .form-actions .btn {
    width: 100%;
  }
}

.info-panel {
  margin-top: 24px;
  padding: 20px;
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
}

.info-panel h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.info-panel ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.info-panel li {
  font-size: 13px;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}

.info-panel li::before {
  content: "•";
  position: absolute;
  left: 4px;
  color: var(--accent);
}

.info-panel code {
  background: var(--bg-input);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
  font-family: ui-monospace, "Cascadia Code", "SF Mono", Menlo, monospace;
  color: var(--text-primary);
}