*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f0f2f5;
  color: #222;
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background 0.3s, color 0.3s;
}

body.dark {
  background: #121212;
  color: #e0e0e0;
}

.site-logo {
  position: fixed;
  top: 12px;
  left: 12px;
  width: 48px;
  height: auto;
  z-index: 9999;
  opacity: 0.9;
  transition: opacity 0.2s;
}
.site-logo:hover {
  opacity: 1;
}

#auth-card {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 1;
  width: 100%;
  padding: 80px 16px 60px;
}

.card {
  background: #fff;
  padding: 32px 28px;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  width: 100%;
  max-width: 380px;
}

body.dark .card {
  background: #1e1e1e;
  box-shadow: 0 2px 16px rgba(0,0,0,0.4);
}

.card h2 {
  margin: 0 0 20px;
  font-size: 22px;
  text-align: center;
}

#auth-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#turnstile-container {
  display: flex;
  justify-content: center;
  margin: 4px 0;
}

#turnstile-container iframe {
  max-width: 100%;
}

input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
  color: #222;
}

body.dark input {
  background: #2a2a2a;
  border-color: #444;
  color: #e0e0e0;
}

input:focus {
  border-color: #28a745;
  box-shadow: 0 0 0 3px rgba(40,167,69,0.15);
}

button {
  background: #28a745;
  color: #fff;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

button:hover {
  background: #218838;
}

button:active {
  transform: scale(0.98);
}

#switch-btn {
  margin-top: 16px;
  width: 100%;
  background: transparent;
  color: #28a745;
  font-weight: 500;
  padding: 8px;
}
#switch-btn:hover {
  background: rgba(40,167,69,0.08);
}

body.dark #switch-btn {
  color: #4cdf6c;
}
body.dark #switch-btn:hover {
  background: rgba(76,223,108,0.1);
}

#strength {
  height: 6px;
  background: #e0e0e0;
  border-radius: 3px;
  overflow: hidden;
}
body.dark #strength {
  background: #333;
}

#strength-bar {
  height: 100%;
  width: 0;
  border-radius: 3px;
  transition: width 0.15s, background 0.15s;
}

.alert {
  padding: 10px 14px;
  border-radius: 8px;
  margin-top: 12px;
  font-size: 13px;
  text-align: center;
  background: #f44336;
  color: #fff;
}

.alert.success {
  background: #28a745;
}

.alert.hidden {
  display: none;
}

#dashboard {
  display: none;
  width: 100%;
  max-width: 900px;
  padding: 20px;
  flex: 1;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-top: 20px;
}

.dashboard-header h2 {
  margin: 0;
  font-size: 22px;
}

.btn-logout {
  background: transparent;
  color: #888;
  padding: 6px 14px;
  font-weight: 400;
  font-size: 13px;
  border: 1px solid #ccc;
}
.btn-logout:hover {
  background: rgba(0,0,0,0.04);
  color: #333;
}
body.dark .btn-logout {
  border-color: #444;
  color: #aaa;
}
body.dark .btn-logout:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
}

.dashboard-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 700px) {
  .dashboard-content {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 1px 8px rgba(0,0,0,0.06);
}

body.dark .panel {
  background: #1e1e1e;
  box-shadow: 0 1px 8px rgba(0,0,0,0.3);
}

.panel h3 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 600;
}

.input-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.input-row input {
  flex: 1;
  min-width: 0;
}

#transaction-list {
  max-height: 300px;
  overflow-y: auto;
}

.transaction {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: 14px;
}

.transaction-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

body.dark .transaction {
  border-bottom-color: #2a2a2a;
}

.transaction:last-child {
  border-bottom: none;
}

.chart-wrapper {
  position: relative;
  width: 100%;
  height: 280px;
}

#budgetChart {
  width: 100% !important;
  height: 100% !important;
}

footer {
  text-align: center;
  font-size: 13px;
  color: #999;
  padding: 20px;
  width: 100%;
}
body.dark footer {
  color: #555;
}

.btn-analyze {
  background: none;
  border: 1px solid #ccc;
  color: #666;
  padding: 2px 10px;
  font-size: 11px;
  font-weight: 400;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-analyze:hover {
  border-color: #28a745;
  color: #28a745;
  background: rgba(40,167,69,0.06);
}
body.dark .btn-analyze {
  border-color: #444;
  color: #999;
}
body.dark .btn-analyze:hover {
  border-color: #4cdf6c;
  color: #4cdf6c;
  background: rgba(76,223,108,0.08);
}

.ai-feedback {
  font-size: 13px;
  color: #555;
  padding: 6px 0 2px;
  line-height: 1.4;
}
body.dark .ai-feedback {
  color: #aaa;
}

.ai-feedback.loading {
  color: #999;
  font-style: italic;
}

.ai-feedback.unreasonable {
  color: #d32f2f;
}
body.dark .ai-feedback.unreasonable {
  color: #ef5350;
}

.ai-feedback.reasonable {
  color: #2e7d32;
}
body.dark .ai-feedback.reasonable {
  color: #66bb6a;
}