/* Font Faces */
@font-face {
  font-family: 'Noto Serif SC';
  src: url('/xingzuo/fonts/noto-serif-sc-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Noto Sans SC';
  src: url('/xingzuo/fonts/noto-sans-sc-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Cormorant Garamond';
  src: url('/xingzuo/fonts/cormorant-garamond-400.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* Brand Design Tokens */
:root {
  --yyry-ivory: #F3EDE3;
  --yyry-paper: #FAF7F1;
  --yyry-lacquer: #8E1F29;
  --yyry-ink: #151716;
  --yyry-stone: #CDBAA4;
  --yyry-champagne: #A78150;
  --yyry-muted: #74695F;

  --surface-page: var(--yyry-ivory);
  --surface-panel: var(--yyry-paper);
  --surface-inverse: var(--yyry-ink);
  --text-primary: var(--yyry-ink);
  --text-secondary: var(--yyry-muted);
  --text-inverse: var(--yyry-paper);
  --border-subtle: color-mix(in srgb, var(--yyry-stone) 55%, transparent);
  --action-primary: var(--yyry-lacquer);
  --action-primary-text: var(--yyry-paper);
  --focus-ring: var(--yyry-lacquer);

  --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-display: 'Cormorant Garamond', serif;

  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  --radius-sm: 6px;
  --radius-md: 4px;

  --transition-duration: 250ms;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-duration: 0ms;
  }
}

/* Reset and Base */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--surface-page);
  background-image: radial-gradient(ellipse at 15% 0%, var(--surface-panel), transparent 65%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-synthesis: none;
}

h1, h2, h3, h4, strong {
  font-weight: 400;
}

a, button, input, select {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
}

/* Header */
.site-header {
  background-color: color-mix(in srgb, var(--surface-panel) 96%, transparent);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.brand-lockup {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  align-content: center;
  text-align: center;
  border-radius: 50%;
  background: var(--yyry-ink);
  color: var(--yyry-paper);
  font-family: var(--font-serif);
  font-size: 9px;
  letter-spacing: 1px;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: 0.08em;
  margin: 0;
  color: var(--yyry-lacquer);
}

.brand-divider {
  height: 22px;
  width: 1px;
  background: var(--border-subtle);
  margin: 0 var(--spacing-xs);
}

.brand-product {
  font-size: 13px;
  color: var(--text-secondary);
}

.header-nav {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 13px;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: var(--spacing-xs);
  white-space: nowrap;
  transition: color var(--transition-duration);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

/* Main Content */
.main-content {
  min-height: calc(100vh - 160px);
}

.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px var(--spacing-xl) var(--spacing-3xl);
}

.site-footer {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-xl);
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-lg);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.8;
}

/* Intro Section */
.intro-section {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  animation: page-reveal 600ms ease-out both;
}

.eyebrow {
  margin: 0 0 var(--spacing-md);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--text-secondary);
}

.eyebrow span {
  margin-right: var(--spacing-xs);
  color: var(--yyry-lacquer);
}

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.5;
  letter-spacing: -0.035em;
  margin: 0 0 var(--spacing-sm);
  color: var(--text-primary);
}

.page-title em {
  color: var(--yyry-lacquer);
  font-style: normal;
}

.intro-text {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0;
}

.hero-rule {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  color: var(--text-secondary);
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.16em;
}

.hero-rule i {
  width: 22px;
  height: 1px;
  background: var(--border-subtle);
}

/* Form Section */
.form-section {
  max-width: 680px;
  margin: 0 auto;
  background-color: var(--surface-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 36px;
  box-shadow: 0 12px 32px color-mix(in srgb, var(--yyry-stone) 9%, transparent);
  animation: page-reveal 600ms 100ms ease-out both;
}

.form-section__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.section-kicker {
  margin: 0 0 var(--spacing-xs);
  color: var(--text-secondary);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.section-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1.5;
}

.section-step {
  margin: 0;
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.section-step strong {
  color: var(--yyry-lacquer);
}

.section-step span {
  font-size: 16px;
  color: var(--text-secondary);
}

.section-intro {
  margin: var(--spacing-lg) 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.9;
}

.privacy-line {
  margin: 18px auto 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 12px;
  line-height: 1.8;
}

.privacy-line span {
  font-size: 16px;
  margin-right: 4px;
}

.page-container:has(.result-section:not([hidden])) .privacy-line {
  display: none;
}

.chart-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  min-width: 0;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-label {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-primary);
}

.form-input,
.form-select {
  width: 100%;
  min-width: 0;
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 16px;
  color: var(--text-primary);
  background-color: color-mix(in srgb, var(--yyry-paper) 65%, white);
  border: 1px solid color-mix(in srgb, var(--yyry-stone) 80%, transparent);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-duration), box-shadow var(--transition-duration);
  min-height: 48px;
}

.form-input:hover,
.form-select:hover {
  border-color: var(--yyry-stone);
}

.form-input:focus,
.form-select:focus {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-color: var(--focus-ring);
}

.form-input::placeholder {
  color: var(--text-secondary);
  opacity: 0.7;
}

/* City Suggestions */
.city-suggestions {
  position: relative;
  margin-top: var(--spacing-xs);
  background-color: var(--surface-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  max-height: 240px;
  overflow-y: auto;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--yyry-ink) 10%, transparent);
}

.city-option {
  min-height: 44px;
  padding: 12px 16px;
  cursor: pointer;
  font-size: 15px;
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-duration);
}

.city-option:last-child {
  border-bottom: none;
}

.city-option:hover,
.city-option[aria-selected="true"] {
  background-color: color-mix(in srgb, var(--yyry-stone) 20%, transparent);
}

.city-option:focus {
  outline: 2px solid var(--focus-ring);
  outline-offset: -2px;
  background-color: color-mix(in srgb, var(--yyry-stone) 20%, transparent);
}

.city-name {
  color: var(--text-primary);
}

.city-detail {
  font-size: 13px;
  color: var(--text-secondary);
  margin-left: var(--spacing-xs);
}

/* Selected City Info */
.selected-city-info {
  margin-top: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: color-mix(in srgb, var(--yyry-champagne) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--yyry-champagne) 30%, transparent);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
}

.city-info-label {
  color: var(--yyry-champagne);
  font-family: var(--font-sans);
  font-size: 13px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-xs);
}

.city-info-value {
  color: var(--text-primary);
  overflow-wrap: anywhere;
}

/* Form Notice */
.form-notice {
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-subtle);
}

.notice-text {
  font-size: 13px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin: 0;
}

.notice-text + .notice-text {
  margin-top: var(--spacing-sm);
}

.notice-text strong {
  color: var(--text-primary);
  font-weight: 400;
}

.form-hint {
  font-size: 14px;
  color: var(--text-secondary);
  margin: var(--spacing-xs) 0 0 0;
}

/* Form Actions */
.form-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: 0;
}

@media (max-width: 500px) {
  .form-actions {
    flex-direction: column;
  }
}

/* Buttons */
.btn {
  padding: 14px 20px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 400;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-duration), transform var(--transition-duration);
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.btn:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 4px;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--action-primary);
  color: var(--action-primary-text);
  flex: 1.8;
}

.btn-primary:hover:not(:disabled) {
  background-color: color-mix(in srgb, var(--action-primary) 85%, black);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  flex: 1;
}

.btn-secondary:hover:not(:disabled) {
  background-color: color-mix(in srgb, var(--yyry-stone) 15%, transparent);
  border-color: var(--yyry-stone);
}

.btn-text {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 14px;
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  transition: color var(--transition-duration);
  min-height: 44px;
}

.btn-text:hover {
  color: var(--yyry-lacquer);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.btn-text:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Form Alert */
.form-alert {
  padding: var(--spacing-md);
  background-color: color-mix(in srgb, var(--action-primary) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--action-primary) 30%, transparent);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 15px;
}

/* Result Section */
.result-section {
  scroll-margin-top: 100px;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.result-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: start;
  margin-bottom: var(--spacing-2xl);
}

.result-layout > .chart-container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
}

@media (max-width: 767px) {
  .result-header {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}

.result-title {
  font-family: var(--font-serif);
  font-size: 32px;
  margin: 0;
  color: var(--text-primary);
}

.result-header .section-step {
  margin-top: var(--spacing-xs);
  font-size: 18px;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

@media (max-width: 767px) {
  .result-actions {
    width: 100%;
    justify-content: flex-start;
  }
}

/* Chart Container */
.chart-container {
  background-color: var(--surface-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 0;
  aspect-ratio: 640 / 720;
}

.chart-container svg {
  display: block;
  width: 100%;
  height: auto;
}

/* Animated natal chart */
.natal-chart .chart-plain,
.natal-chart .hl {
  transition: opacity 320ms ease;
}

.natal-chart[data-focus] .chart-plain {
  opacity: 0.32;
}

.natal-chart[data-focus] .chart-plain--soft {
  opacity: 0.55;
}

.natal-chart[data-focus] .hl {
  opacity: 0.16;
}

.natal-chart[data-focus="sun"] .hl[data-key="sun"],
.natal-chart[data-focus="moon"] .hl[data-key="moon"],
.natal-chart[data-focus="ascendant"] .hl[data-key="ascendant"] {
  opacity: 1;
}

.natal-chart[data-focus="sun"] .hl[data-key="sun"] .c-halo,
.natal-chart[data-focus="moon"] .hl[data-key="moon"] .c-halo,
.natal-chart[data-focus="ascendant"] .hl[data-key="ascendant"] .c-halo {
  animation: chart-halo 1600ms ease-out infinite;
}

.chart-legend-item {
  cursor: default;
}

.natal-chart[data-focus] .chart-legend-item {
  opacity: 0.4;
}

.natal-chart .c-fade,
.natal-chart .c-wheel,
.natal-chart .c-pop,
.natal-chart .c-draw,
.natal-chart .c-orbit,
.natal-chart .c-halo {
  animation-delay: calc(var(--d, 0) * 1ms);
  animation-fill-mode: both;
}

.natal-chart .c-fade {
  animation-name: chart-fade;
  animation-duration: 700ms;
  animation-timing-function: ease-out;
}

.natal-chart .c-wheel {
  transform-box: view-box;
  transform-origin: 320px 320px;
  animation-name: chart-wheel;
  animation-duration: 1600ms;
  animation-timing-function: cubic-bezier(0.2, 0.7, 0.2, 1);
}

.natal-chart .c-pop {
  transform-box: fill-box;
  transform-origin: center;
  animation-name: chart-pop;
  animation-duration: 520ms;
  animation-timing-function: cubic-bezier(0.3, 1.4, 0.5, 1);
}

.natal-chart .c-draw {
  stroke-dasharray: 1;
  animation-name: chart-draw;
  animation-duration: 900ms;
  animation-timing-function: ease-in-out;
}

.natal-chart .c-orbit {
  transform-box: view-box;
  transform-origin: 320px 320px;
  animation-name: chart-orbit;
  animation-duration: 1100ms;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
}

.natal-chart .c-halo {
  transform-box: fill-box;
  transform-origin: center;
  animation-name: chart-halo;
  animation-duration: 1600ms;
  animation-timing-function: ease-out;
  animation-iteration-count: 2;
  animation-fill-mode: none;
}

@keyframes chart-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes chart-wheel {
  from { opacity: 0; transform: rotate(-40deg) scale(0.94); }
  to { opacity: 1; transform: none; }
}

@keyframes chart-pop {
  from { opacity: 0; transform: scale(0.3); }
  to { opacity: 1; transform: none; }
}

@keyframes chart-draw {
  from { stroke-dashoffset: 1; }
  to { stroke-dashoffset: 0; }
}

@keyframes chart-orbit {
  from { opacity: 0; transform: rotate(var(--from, -30deg)); }
  to { opacity: 1; transform: none; }
}

@keyframes chart-halo {
  0% { opacity: 0.7; transform: scale(1); }
  100% { opacity: 0; transform: scale(2.1); }
}

/* Sign icons in the interpretation list */
.interpretation-item {
  transition: background-color var(--transition-duration);
  border-radius: var(--radius-md);
}

.interpretation-sign {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.interpretation-sign .zodiac-icon {
  flex: none;
  width: 34px;
  height: 34px;
  padding: 6px;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: var(--accent, var(--yyry-champagne));
}

.interpretation-item[data-key="sun"] { --accent: var(--yyry-lacquer); }
.interpretation-item[data-key="moon"] { --accent: var(--yyry-ink); }
.interpretation-item[data-key="ascendant"] { --accent: var(--yyry-champagne); }

.interpretation-item.is-active .interpretation-label {
  color: var(--accent);
}

.interpretation-item.is-active .zodiac-icon {
  background-color: color-mix(in srgb, var(--accent) 10%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  .natal-chart *,
  .natal-chart[data-focus] * {
    animation: none !important;
    transition: none !important;
  }
}

/* Interpretations */
.interpretation-section {
  min-width: 0;
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
}

.interpretation-title {
  margin: 0 0 var(--spacing-xl);
  font-family: var(--font-serif);
  font-size: 28px;
}

.interpretations {
  min-width: 0;
  counter-reset: interpretation;
}

.interpretation-item {
  counter-increment: interpretation;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--border-subtle);
}

.interpretation-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.interpretation-label {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--yyry-champagne);
  margin: 0 0 var(--spacing-xs) 0;
}

.interpretation-label::before {
  content: counter(interpretation, decimal-leading-zero) " / ";
}

.interpretation-sign {
  font-family: var(--font-serif);
  font-size: 24px;
  line-height: 1.6;
  margin: 0 0 var(--spacing-sm);
  color: var(--text-primary);
}

.interpretation-text {
  font-size: 16px;
  line-height: 1.95;
  color: var(--text-primary);
  white-space: pre-line;
  margin: 0;
}

.interpretation-body {
  min-width: 0;
  overflow-wrap: anywhere;
}

.interpretation-role {
  color: var(--text-secondary);
  font-size: 13px;
  margin: var(--spacing-sm) 0 0;
}

.interpretation-details {
  margin-top: var(--spacing-lg);
}

.interpretation-details > summary {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  min-height: 44px;
  width: fit-content;
  color: var(--action-primary);
  font-size: 14px;
  cursor: pointer;
  list-style: none;
}

.interpretation-details > summary::-webkit-details-marker {
  display: none;
}

.interpretation-details > summary::before {
  content: '+';
  font-family: var(--font-display);
  font-size: 24px;
}

.interpretation-details[open] > summary::before {
  content: '-';
}

.interpretation-collapse,
.interpretation-details[open] .interpretation-expand {
  display: none;
}

.interpretation-details[open] .interpretation-collapse {
  display: inline;
}

.interpretation-detail-section {
  margin-top: var(--spacing-lg);
}

.interpretation-detail-section h5 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--text-primary);
  margin: 0 0 var(--spacing-sm);
}

.interpretation-detail-text {
  font-size: 16px;
  line-height: 2;
  color: var(--text-secondary);
  margin: 0 0 var(--spacing-md);
}

@media (max-width: 767px) {
  .interpretation-item {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--spacing-md);
  }

  .interpretation-title {
    font-size: 24px;
  }
}

/* Method Info */
.method-info {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--spacing-xl);
}

.method-title {
  font-family: var(--font-serif);
  font-size: 20px;
  margin: 0 0 var(--spacing-md) 0;
  color: var(--text-primary);
}

.method-details {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.method-detail-item {
  margin-bottom: var(--spacing-xs);
  overflow-wrap: anywhere;
}

.method-detail-label {
  color: var(--yyry-champagne);
  margin-right: var(--spacing-xs);
}

.disclaimer {
  font-size: 14px;
  color: var(--text-secondary);
  margin: var(--spacing-md) 0 0 0;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-subtle);
}

/* Status Message */
.status-message {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  max-width: 400px;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--surface-inverse);
  color: var(--text-inverse);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px color-mix(in srgb, var(--yyry-ink) 25%, transparent);
  font-size: 15px;
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-duration), transform var(--transition-duration);
  pointer-events: none;
}

.status-message.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

@media (max-width: 767px) {
  .status-message {
    left: var(--spacing-md);
    right: var(--spacing-md);
    bottom: var(--spacing-md);
    max-width: none;
  }
}

/* Utility Classes */
[hidden] {
  display: none !important;
}

@keyframes page-reveal {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .result-layout {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .chart-container {
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
  }
}

@media (max-width: 767px) {
  .header-container {
    padding: 10px var(--spacing-md);
  }

  .brand-lockup {
    gap: 8px;
  }

  .brand-name {
    font-size: 18px;
  }

  .brand-divider, .brand-product {
    display: none;
  }

  .page-container {
    padding: 32px var(--spacing-md) 48px;
  }

  .intro-section {
    margin-bottom: 28px;
  }

  .page-title {
    font-size: clamp(28px, 8.2vw, 36px);
    max-width: 540px;
    margin: 0 auto var(--spacing-md);
    text-wrap: balance;
  }

  .title-line {
    display: block;
  }

  .intro-text {
    max-width: 360px;
    margin: 0 auto;
    font-size: 14px;
  }

  .hero-rule {
    margin-top: 20px;
  }

  .form-section {
    padding: 24px 20px;
  }

  .section-title {
    font-size: 24px;
  }

  .section-intro {
    margin: 20px 0;
  }

  .chart-container {
    padding: 8px;
  }

  .site-footer {
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: 20px var(--spacing-md);
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro-section, .form-section {
    animation: none;
  }

  .btn:active, .status-message {
    transform: none;
  }
}

/* Loading State */
.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: color-mix(in srgb, var(--surface-page) 50%, transparent);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Ensure minimum touch target size */
@media (pointer: coarse) {
  .btn-text {
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
  }
}