:root {
  --bg: #f8f9fa;
  --surface: #ffffff;
  --surface-hover: #f0f0f0;
  --text: #1a1a1a;
  --text-secondary: #666;
  --text-muted: #999;
  --border: #e5e5e5;
  --primary: #0066cc;
  --primary-hover: #0052a3;
  --success: #22c55e;
  --warning: #f59e0b;
  --error: #ef4444;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --radius: 6px;
  --radius-lg: 8px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-family: inherit;
  cursor: pointer;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 16px;
  transition: all 0.15s ease;
  line-height: 1;
}

button:active,
.btn:active {
  transform: scale(0.98);
}

button:hover,
.btn:hover {
  text-decoration: none;
}

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

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

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

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

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

.btn-icon {
  padding: 8px;
  background: transparent;
  color: var(--text-secondary);
}

.btn-icon:hover {
  background: var(--surface-hover);
}

input,
textarea,
select {
  font-family: inherit;
  font-size: 14px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  width: 100%;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
}

label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group {
  margin-bottom: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 12px;
  text-transform: uppercase;
}

.badge-pending {
  background: #fef3c7;
  color: #92400e;
}

.badge-approved {
  background: #dcfce7;
  color: #166534;
}

.badge-error {
  background: #fee2e2;
  color: #991b1b;
}

.error-text {
  color: var(--error);
  font-size: 13px;
  margin-top: 4px;
}

.hidden {
  display: none !important;
}

.loading {
  opacity: 0.6;
  pointer-events: none;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-secondary);
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.empty-state p {
  font-size: 14px;
  margin-bottom: 16px;
}

/* Dialog System */
.dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
}

.dialog-overlay.active {
  opacity: 1;
  visibility: visible;
}

.dialog-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.dialog-overlay.active .dialog-box {
  transform: translateY(0);
}

.dialog-message {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 24px;
  line-height: 1.5;
}

.dialog-input-wrapper {
  margin-bottom: 24px;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}