/* Base layout & color palette
 * Palette uses deep blues and warm oranges that remain distinguishable for
 * most common forms of color blindness, while meeting WCAG contrast ratios.
 */
:root {
  --color-bg: #f5f7fa;
  --color-panel: #ffffff;
  --color-panel-border: #dde3ea;
  --color-primary: #124559;
  --color-accent: #ff8a5b;
  --color-text: #1f2933;
  --color-muted: #5f6c7b;
  --shadow-soft: 0 15px 35px rgba(18, 69, 89, 0.08);
}

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

body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--color-text);
  background: radial-gradient(circle at 10% 20%, #e8f0f5 0%, #f5f7fa 45%);
  min-height: 100vh;
}

.app-shell {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4.5rem;
}

/* Hero section */
.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.logo-space {
  display: flex;
  justify-content: center;
  margin-bottom: 1rem;
}

.logo-image {
  max-width: 140px;
  height: auto;
  border-radius: 24px;
  border: 2px solid rgba(18, 69, 89, 0.08);
  box-shadow: 0 10px 25px rgba(18, 69, 89, 0.15);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.hero h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(2.2rem, 4vw, 3rem);
  color: var(--color-primary);
}

.intro {
  margin: 0 auto;
  max-width: 52ch;
  color: var(--color-muted);
  line-height: 1.6;
}
 
.alert-note {
  margin: 1.1rem auto 0;
  padding: 0.95rem 1.2rem;
  border-radius: 1rem;
  border: 1px solid rgba(255, 138, 91, 0.45);
  background: linear-gradient(145deg, rgba(255, 138, 91, 0.15), rgba(255, 138, 91, 0.05));
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  text-align: left;
  box-shadow: 0 12px 25px rgba(255, 138, 91, 0.18);
  max-width: 480px;
  width: 100%;
}

.alert-note__icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.12);
}

.alert-note__title {
  margin: 0 0 0.15rem;
  font-weight: 700;
  color: var(--color-primary);
}

.alert-note__text {
  margin: 0;
  color: var(--color-text);
  line-height: 1.5;
  font-size: 0.95rem;
}

.usage-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.2rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  background: rgba(255, 138, 91, 0.18);
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Panels & cards */
.panel {
  background: var(--color-panel);
  border: 1px solid var(--color-panel-border);
  border-radius: 1rem;
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
}

.panel + .panel {
  margin-top: 1.5rem;
}

/* Form styles */
.compare-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.form-label {
  font-size: 1rem;
  font-weight: 600;
}

.form-label-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  justify-content: space-between;
}

.helper-text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.mono {
  font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  background: #eef2f6;
  padding: 0.15rem 0.35rem;
  border-radius: 0.35rem;
}

.limit-message {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 0.75rem;
  background: rgba(18, 69, 89, 0.08);
  border-left: 4px solid var(--color-accent);
  color: var(--color-primary);
  line-height: 1.5;
  font-weight: 600;
}

.limit-message[hidden] {
  display: none;
}

.coffee-inline {
  color: var(--color-accent);
  text-decoration: underline;
}

.support-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .form-field {
    flex-direction: row;
    align-items: center;
  }

  .form-field input {
    flex: 1;
  }

  .form-field button {
    flex-shrink: 0;
  }
}

input[type='url'] {
  border: 2px solid var(--color-panel-border);
  border-radius: 0.75rem;
  padding: 0.85rem 1rem;
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  color: var(--color-text);
  background: #fff;
}

input[type='url']::placeholder {
  color: rgba(31, 41, 51, 0.55);
  opacity: 1;
}

.is-disabled {
  cursor: not-allowed;
  opacity: 0.7;
}

input[type='url']:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(18, 69, 89, 0.2);
}

button {
  border: none;
  border-radius: 0.75rem;
  padding: 0.95rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--color-primary);
  color: #fff;
  transition: transform 0.15s, box-shadow 0.15s;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(18, 69, 89, 0.2);
}

button:focus-visible {
  outline: 3px solid rgba(255, 138, 91, 0.6);
  outline-offset: 3px;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  background: var(--color-muted);
}

.toggle-group {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  color: var(--color-muted);
}

.toggle-group input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-switch {
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: rgba(18, 69, 89, 0.2);
  position: relative;
  transition: background 0.2s;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  top: 3px;
  left: 3px;
  box-shadow: 0 2px 6px rgba(18, 69, 89, 0.25);
  transition: transform 0.2s;
}

.toggle-group input:checked + .toggle-switch {
  background: var(--color-accent);
}

.toggle-group input:checked + .toggle-switch::after {
  transform: translateX(20px);
}

/* Condition tags shown only when second-hand toggle is active */
.condition-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background: rgba(255, 138, 91, 0.18);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  margin-left: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Result area */
.result-panel {
  min-height: 160px;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  justify-content: center;
  color: var(--color-muted);
  text-align: left;
}
.productName {
  margin: 0 0;
  max-width: 52ch;
  color: var(--color-muted);
  line-height: 1.6;
}
.result-panel h2,
.result-panel h3 {
  color: var(--color-primary);
  margin-bottom: 0.3rem;
}

.result-panel strong {
  color: var(--color-text);
}

.result-panel ul,
.result-panel ol {
  padding-left: 1.5rem;
}

.result-panel a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
}

.result-panel a:hover,
.result-panel a:focus {
  text-decoration: underline;
}

.result-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.result-card--warning {
  gap: 0.5rem;
}

.result-card__header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
}

.result-card__header h3 {
  margin: 0;
  line-height: 1.2;
}

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

.result-card__message {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: #146214;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge--success {
  background: rgba(75, 181, 67, 0.18);
  color: #146214;
}

.badge--warning {
  background: rgba(255, 138, 91, 0.18);
  color: var(--color-accent);
}

.cheapest-alt {
  background: rgba(18, 69, 89, 0.04);
  border-radius: 0.75rem;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.cheapest-alt__label {
  margin: 0;
  font-weight: 600;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.cheapest-alt__media {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.cheapest-alt__thumb {
  width: 96px;
  height: 96px;
  border-radius: 0.65rem;
  object-fit: cover;
  border: 1px solid rgba(18, 69, 89, 0.15);
  box-shadow: 0 8px 18px rgba(18, 69, 89, 0.15);
  background: #fff;
}

.cheapest-alt__details {
  flex: 1;
  min-width: 180px;
}

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

.cheapest-alt__savings {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-muted);
  font-style: italic;
}

.all-alts {
  margin-top: 0.5rem;
}

.all-alts__label {
  margin: 0 0 0.35rem;
  font-weight: 600;
  color: var(--color-primary);
}

.alt-list {
  padding-left: 1.2rem;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.result-alt a {
  display: inline-block;
  font-size: 0.95rem;
}

.top-results {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(18, 69, 89, 0.08);
}

.top-results__label {
  margin: 0 0 0.5rem;
  color: var(--color-primary);
  font-weight: 600;
}

.top-results__list {
  margin: 0;
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.top-results__item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.top-results__title {
  font-size: 0.95rem;
  color: var(--color-text);
}

.top-results__product {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.top-results__item a {
  font-size: 0.9rem;
}

.no-deals {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

/* Persistent footer */
.site-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(18, 69, 89, 0.92);
  color: #fefefe;
  padding: 0.9rem 1.5rem;
  text-align: center;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-text {
  margin: 0;
  max-width: 520px;
  line-height: 1.4;
}

.coffee-link {
  display: inline-flex;
  align-items: center;
}

.coffee-button {
  width: 145px;
  height: auto;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.25));
  border-radius: 8px;
}