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

[hidden] { display: none !important; }

:root {
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-primary: #1d1d1f;
  --color-secondary: #6e6e73;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-border: #d2d2d7;
  --color-error-bg: #fff2f2;
  --color-error-text: #c0392b;
  --color-success-bg: #f0fff4;
  --color-success-text: #27ae60;
  --color-highlight: #e8f4fd;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ── */

header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 20px 24px;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.header-logo-link {
  flex-shrink: 0;
  display: block;
}

.header-logo {
  height: 168px;
  width: auto;
  max-height: 168px;
  display: block;
}

.header-text {
  text-align: left;
}

header h1 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.subtitle {
  margin-top: 4px;
  color: var(--color-secondary);
  font-size: 0.875rem;
}

@media (max-width: 480px) {
  .header-inner {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
  .header-text {
    text-align: center;
  }
  .header-logo {
    height: 44px;
  }
  header h1 {
    font-size: 1.15rem;
  }
}

/* ── Main ── */

main {
  flex: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 16px;
  width: 100%;
}

/* ── Search ── */

.search-section {
  margin-bottom: 24px;
}

.search-wrapper {
  position: relative;
}

#search-input {
  width: 100%;
  padding: 14px 18px;
  font-size: 1rem;
  font-family: var(--font);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  box-shadow: var(--shadow);
}

#search-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

/* ── Search error ── */

.search-error {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--color-error-text);
  padding: 0 4px;
}

/* ── Suggestions ── */

.suggestions {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  list-style: none;
  z-index: 100;
  overflow: hidden;
  max-height: 320px;
  overflow-y: auto;
}

.suggestions li {
  padding: 12px 18px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: background 0.1s;
  border-bottom: 1px solid var(--color-border);
}

.suggestions li:last-child {
  border-bottom: none;
}

.suggestions li:hover,
.suggestions li.active {
  background: var(--color-highlight);
  color: var(--color-accent);
}

/* ── Changes ── */

.changes-empty {
  color: var(--color-secondary);
  font-size: 0.875rem;
}

.change-detail {
  font-size: 0.78rem;
  color: var(--color-secondary);
}

.change-prices {
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  flex-shrink: 0;
}

.change-old {
  color: var(--color-secondary);
  text-decoration: line-through;
}

.change-arrow {
  color: var(--color-secondary);
  font-size: 0.75rem;
}

.change-new {
  color: var(--color-accent);
  font-weight: 600;
}

/* ── Intro ── */

.intro-body {
  padding: 14px 18px;
  color: var(--color-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.intro-examples {
  margin-top: 10px;
  padding-left: 18px;
  list-style: disc;
}

.intro-examples li {
  margin-top: 4px;
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--color-primary);
}

/* ── Loading ── */

.loading-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px;
  color: var(--color-secondary);
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Error ── */

.error-section {
  background: var(--color-error-bg);
  border: 1px solid #fac5c5;
  border-radius: var(--radius);
  padding: 16px 20px;
  color: var(--color-error-text);
  font-size: 0.9rem;
}

/* ── No results ── */

.no-results-section {
  text-align: center;
  padding: 40px;
  color: var(--color-secondary);
}

/* ── Results ── */

.results-section {
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.results-header {
  margin-bottom: 20px;
}

.results-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.results-updated {
  margin-top: 4px;
  font-size: 0.8rem;
  color: var(--color-secondary);
}

.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.category-title {
  padding: 12px 18px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-secondary);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 18px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.price-row:last-child {
  border-bottom: none;
}

.price-repair {
  color: var(--color-primary);
}

.price-value {
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  margin-left: 12px;
}

/* ── Section nav ── */

.section-nav {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.section-nav a {
  font-size: 0.8rem;
  color: var(--color-secondary);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.section-nav a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ── Auth overlay ── */

.auth-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.auth-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 36px 32px;
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.auth-box h2 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-align: center;
}

.auth-box p {
  font-size: 0.875rem;
  color: var(--color-secondary);
  text-align: center;
}

#auth-password {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: var(--font);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s;
}

#auth-password:focus {
  border-color: var(--color-accent);
}

#auth-submit {
  width: 100%;
  padding: 12px;
  font-size: 0.95rem;
  font-family: var(--font);
  font-weight: 600;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
}

#auth-submit:hover {
  background: var(--color-accent-hover);
}

#auth-error {
  font-size: 0.82rem;
  color: var(--color-error-text);
  text-align: center;
  min-height: 1.2em;
}

/* ── Footer / Admin ── */

footer {
  border-top: 1px solid var(--color-border);
  padding: 16px;
  background: var(--color-surface);
}

.footer-inner {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.admin-panel {
  flex: 1;
}

.admin-panel summary {
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--color-secondary);
  user-select: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.admin-panel summary:hover {
  color: var(--color-primary);
}

.admin-content {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

#admin-token-input {
  flex: 1;
  min-width: 180px;
  padding: 9px 14px;
  font-size: 0.9rem;
  font-family: var(--font);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s;
}

#admin-token-input:focus {
  border-color: var(--color-accent);
}

#admin-refresh-btn {
  padding: 9px 18px;
  font-size: 0.9rem;
  font-family: var(--font);
  font-weight: 500;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

#admin-refresh-btn:hover {
  background: var(--color-accent-hover);
}

#admin-refresh-btn:disabled {
  background: var(--color-border);
  cursor: not-allowed;
}

.admin-message {
  width: 100%;
  font-size: 0.85rem;
  min-height: 1.2em;
}

.admin-message.ok {
  color: var(--color-success-text);
}

.admin-message.error {
  color: var(--color-error-text);
}

/* ── Responsive ── */

@media (max-width: 480px) {
  header h1 { font-size: 1.5rem; }
  .price-row { flex-direction: column; align-items: flex-start; gap: 2px; }
  .price-value { margin-left: 0; }
}