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

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: #1a1a1a;
  color: #e0e0e0;
  min-height: 100vh;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

h1 {
  font-size: 1.5rem;
  color: #ffffff;
  font-weight: 600;
}

.period {
  color: #888;
  font-size: 0.85rem;
  margin-top: 4px;
}

.header-buttons {
  display: flex;
  gap: 10px;
  align-items: center;
}

.btn-primary {
  background: #4a9eff;
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: #3a8eef;
}

.btn-secondary {
  background: #3a3a3a;
  color: #e0e0e0;
  border: 1px solid #555;
  padding: 10px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-secondary:hover {
  background: #4a4a4a;
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  font-size: 0.8rem;
  opacity: 0.5;
  transition: opacity 0.2s;
}

.btn-icon:hover {
  opacity: 1;
}

.btn-edit { color: #4a9eff; }
.btn-delete { color: #ff4a4a; }

/* Table */
.table-wrapper {
  overflow-x: auto;
  border-radius: 8px;
  border: 1px solid #333;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
}

thead th {
  background: #252525;
  padding: 12px 16px;
  text-align: center;
  font-weight: 600;
  font-size: 0.85rem;
  color: #ccc;
  border-bottom: 2px solid #333;
  white-space: nowrap;
}

thead th:first-child {
  text-align: left;
  position: sticky;
  left: 0;
  background: #252525;
  z-index: 2;
}

thead th .header-label {
  display: block;
  font-size: 0.75rem;
  color: #888;
  font-weight: 400;
  margin-top: 2px;
}

thead th .header-actions {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-top: 4px;
}

thead th.col-evolution {
  background: #1e2a1e;
  color: #8bc34a;
}

tbody td {
  padding: 10px 16px;
  text-align: center;
  font-size: 0.9rem;
  border-bottom: 1px solid #2a2a2a;
}

tbody td:first-child {
  text-align: left;
  font-weight: 500;
  color: #ccc;
  position: sticky;
  left: 0;
  background: #1a1a1a;
  z-index: 1;
}

tbody tr:hover td {
  background: #2d2d2d;
}

tbody tr:hover td:first-child {
  background: #2d2d2d;
}

td.evolution {
  font-weight: 600;
  background: #1e2a1e !important;
}

td.evolution.positive {
  color: #66bb6a;
}

td.evolution.negative {
  color: #ef5350;
}

td.evolution.warning {
  color: #ffa726;
}

td.evolution.neutral {
  color: #888;
}

.empty-msg {
  text-align: center;
  padding: 60px 20px;
  color: #666;
  font-size: 1rem;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  background: #2d2d2d;
  border-radius: 12px;
  padding: 28px;
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid #444;
}

.modal h2 {
  margin-bottom: 20px;
  font-size: 1.2rem;
  color: #fff;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 0.8rem;
  color: #999;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: #1a1a1a;
  border: 1px solid #444;
  border-radius: 6px;
  padding: 8px 12px;
  color: #e0e0e0;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
  font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: #4a9eff;
}

.profile-hint {
  color: #888;
  font-size: 0.8rem;
  margin-bottom: 16px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #4a9eff;
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  z-index: 200;
  animation: fadeInOut 2s ease-in-out forwards;
}

@keyframes fadeInOut {
  0% { opacity: 0; transform: translateX(-50%) translateY(10px); }
  15% { opacity: 1; transform: translateX(-50%) translateY(0); }
  85% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-10px); }
}

/* Login page */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.login-card {
  background: #2d2d2d;
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 380px;
  border: 1px solid #444;
}

.login-title {
  text-align: center;
  font-size: 1.6rem;
  margin-bottom: 4px;
}

.login-subtitle {
  text-align: center;
  color: #888;
  font-size: 0.85rem;
  margin-bottom: 28px;
}

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

.login-btn {
  width: 100%;
  padding: 12px;
  font-size: 1rem;
  margin-top: 8px;
}

.login-error {
  color: #ef5350;
  font-size: 0.85rem;
  text-align: center;
  margin-bottom: 8px;
}

/* Logout button */
.btn-logout {
  background: transparent;
  color: #999;
  border: 1px solid #555;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-logout:hover {
  color: #ef5350;
  border-color: #ef5350;
}

@media (max-width: 600px) {
  .form-row,
  .form-grid {
    grid-template-columns: 1fr;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}