:root {
  --orange-700: #c14c12;
  --orange-600: #e0662b;
  --orange-500: #f08030;
  --orange-200: #f8c79b;
  --sand-100: #fdf5ee;
  --sand-200: #f7efe6;
  --charcoal: #2b1f18;
  --shadow: 0 18px 45px rgba(70, 35, 12, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", "Avenir", "Trebuchet MS", sans-serif;
  color: var(--charcoal);
  background: radial-gradient(circle at top left, #fff8f2, #f6e2cf 55%, #f1d2b8);
  min-height: 100vh;
}

.app-shell {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 18px 72px;
  position: relative;
}

.app-shell::before,
.app-shell::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  opacity: 0.28;
  pointer-events: none;
}

.app-shell::before {
  width: 240px;
  height: 240px;
  background: linear-gradient(135deg, #ffd6ad, #f3a36b);
  top: -60px;
  right: -80px;
}

.app-shell::after {
  width: 180px;
  height: 180px;
  background: linear-gradient(145deg, #f5b27c, #fbe6d1);
  bottom: 40px;
  left: -60px;
}

.app-header {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.brand-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--orange-600);
  box-shadow: 0 0 0 6px rgba(240, 128, 48, 0.2);
}

.app-title h1 {
  margin: 0 0 6px;
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  font-size: 2rem;
  font-weight: 600;
}

.app-title p {
  margin: 0;
  color: rgba(43, 31, 24, 0.75);
}

.panel {
  display: none;
  background: rgba(255, 255, 255, 0.86);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  padding: 24px;
  animation: panelFade 0.5s ease;
}

.panel.is-active {
  display: block;
}

.panel-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

h2 {
  margin: 0;
  font-size: 1.5rem;
}

h3 {
  margin: 0 0 12px;
  font-size: 1.1rem;
}

.lead {
  font-size: 1rem;
  margin: 0;
}

.fallback-message {
  margin: 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px dashed rgba(193, 76, 18, 0.3);
  font-size: 0.85rem;
  color: rgba(43, 31, 24, 0.75);
}

.checkline {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: var(--sand-100);
  border-radius: 12px;
  border: 1px solid rgba(193, 76, 18, 0.12);
}

.checkline input {
  margin-top: 3px;
}

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

.form-card {
  background: var(--sand-100);
  border-radius: 18px;
  padding: 16px;
  border: 1px solid rgba(240, 128, 48, 0.15);
}

.form-card label {
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  gap: 6px;
  margin-bottom: 12px;
}

.form-card input {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(90, 55, 35, 0.2);
  font-size: 1rem;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: #fff;
  border-radius: 999px;
  border: 1px solid rgba(90, 55, 35, 0.2);
  font-size: 0.85rem;
}

.pill input {
  margin: 0;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

button {
  border: none;
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

button.primary {
  background: var(--orange-600);
  color: white;
  box-shadow: 0 12px 22px rgba(225, 102, 43, 0.28);
}

button.ghost {
  background: transparent;
  border: 1px solid rgba(225, 102, 43, 0.4);
  color: var(--orange-700);
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.is-hidden {
  display: none;
}

.constraint-card {
  padding: 18px;
  border-radius: 18px;
  background: linear-gradient(135deg, #fff6ee, #ffe4ce);
  border: 1px solid rgba(193, 76, 18, 0.2);
}

.constraint-card h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.constraint-card p {
  margin: 6px 0;
  font-size: 0.95rem;
}

.ratio-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.section-header p {
  margin: 4px 0 0;
  color: rgba(43, 31, 24, 0.7);
}

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

.ratio-card {
  background: #fff;
  border-radius: 16px;
  padding: 16px;
  border: 1px solid rgba(90, 55, 35, 0.12);
  box-shadow: 0 8px 20px rgba(70, 35, 12, 0.06);
  animation: riseIn 0.5s ease;
}

.impact-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 6px 0;
}

.impact-lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
}

.impact-note {
  margin: 4px 0 0;
  font-size: 0.75rem;
  color: rgba(43, 31, 24, 0.65);
}

.ratio-card.highlight {
  border-color: rgba(225, 102, 43, 0.6);
  box-shadow: 0 10px 26px rgba(225, 102, 43, 0.2);
}

.ratio-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.ratio-name {
  font-weight: 600;
}

.ratio-value {
  font-size: 1.2rem;
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(225, 102, 43, 0.15);
  color: var(--orange-700);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge.warning {
  background: rgba(193, 76, 18, 0.18);
}

.progress-bar {
  height: 8px;
  background: #f3e4d6;
  border-radius: 999px;
  overflow: hidden;
  margin: 8px 0 4px;
}

.progress-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--orange-600), #f6b57d);
}

.summary-card {
  background: var(--sand-100);
  border-radius: 18px;
  padding: 18px;
  border: 1px solid rgba(193, 76, 18, 0.2);
}

.summary-card h3 {
  margin-bottom: 8px;
}

.summary-card ul {
  margin: 8px 0 0 18px;
}

.timestamp {
  font-size: 0.9rem;
  color: rgba(43, 31, 24, 0.7);
  margin: 0;
}

.saved-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.saved-item {
  background: #fff;
  border-radius: 14px;
  padding: 14px;
  border: 1px solid rgba(90, 55, 35, 0.12);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.saved-item button {
  align-self: flex-start;
}

@keyframes panelFade {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 720px) {
  .app-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }

  .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ratio-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .form-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
}