:root {
  --bg: #FAFAF8;
  --card: #FFFFFF;
  --text-main: #1A1A1A;
  --text-muted: #7A7A7A;
  --text-dim: #BDBDBD;
  --text-placeholder: #D0D0CD;
  --accent: #D9D7D2;
  --border: #ECECE9;
  --border-hover: #C8C8C4;
  --selection-bg: rgba(217, 215, 210, 0.5);
  --selection-text: #1A1A1A;
  --transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Source Han Serif CN", "Songti SC", serif;
  --font-sans: "Inter", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", system-ui, sans-serif;
  --container-width: 680px;
  --panel-gap: 64px;
  --panel-min-width: 280px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0D0D0D;
    --card: #1A1A1A;
    --text-main: #E5E5E5;
    --text-muted: #8A8A8A;
    --text-dim: #4A4A4A;
    --text-placeholder: #3A3A3A;
    --accent: #2A2A2A;
    --border: #2A2A2A;
    --border-hover: #3A3A3A;
    --selection-bg: rgba(138, 138, 138, 0.5);
    --selection-text: #E5E5E5;
  }
}

[data-theme="dark"] {
  --bg: #0D0D0D;
  --card: #1A1A1A;
  --text-main: #E5E5E5;
  --text-muted: #8A8A8A;
  --text-dim: #4A4A4A;
  --text-placeholder: #3A3A3A;
  --accent: #2A2A2A;
  --border: #2A2A2A;
  --border-hover: #3A3A3A;
  --selection-bg: rgba(138, 138, 138, 0.5);
  --selection-text: #E5E5E5;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
  padding: 48px 24px;
  box-sizing: border-box;
  width: 100%;
  max-width: 100vw;
}

/* Text Selection */
* {
  user-select: none;
  box-sizing: border-box;
}

input,
textarea {
  user-select: text;
}

/* Prevent overflow */
* {
  max-width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

html {
  overflow-x: hidden;
  max-width: 100vw;
}

.result-content {
  user-select: text;
}

.result-content * {
  user-select: text;
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-text);
}

::-moz-selection {
  background: var(--selection-bg);
  color: var(--selection-text);
}

/* Background Texture */
.texture {
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.035;
  pointer-events: none;
  z-index: -1;
}

/* Header */
.header {
  position: relative;
  text-align: center;
  z-index: 100;
  padding: 0 0 32px;
  margin-bottom: 16px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.header h1 {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 10px;
  letter-spacing: 0.85em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 20px;
  width: 100%;
  text-align: center;
  box-sizing: border-box;
}

.header .line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--border), transparent);
  margin: 0 auto;
}

.logo {
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo img {
  width: 28px;
  height: 28px;
  filter: grayscale(100%) opacity(0.6);
  transition: var(--transition-fast);
}

[data-theme="dark"] .logo img {
  filter: grayscale(100%) opacity(0.4) invert(1);
}

.logo:hover img {
  filter: grayscale(0%) opacity(1);
}

[data-theme="dark"] .logo:hover img {
  filter: grayscale(0%) opacity(1) invert(1);
}

/* Main Container */
.container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: var(--panel-gap);
  width: 100%;
  max-width: calc(var(--panel-min-width) * 2 + var(--panel-gap));
  position: relative;
  min-height: auto;
  margin: 0 auto;
}

/* Panels */
.panel {
  flex: 0 0 var(--panel-min-width);
  display: flex;
  flex-direction: column;
  position: relative;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
}

.search-panel {
  width: var(--panel-min-width);
  transition: var(--transition);
  position: relative;
  z-index: 2;
  transform: translateX(calc((var(--panel-min-width) + var(--panel-gap)) / 2));
}

.container.has-result .search-panel {
  transform: translateX(0);
}

.result-panel {
  width: var(--panel-min-width);
  opacity: 0;
  visibility: hidden;
  transform: translateX(60px) scale(0.95);
  transition: var(--transition);
  pointer-events: none;
  flex-shrink: 0;
  z-index: 1;
}

.result-panel::before {
  content: '';
  position: absolute;
  left: calc(var(--panel-gap) / -2 - 0.5px);
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s;
}

.container.has-result .result-panel::before {
  transform: scaleY(1);
}

.container.has-result .result-panel {
  opacity: 1;
  visibility: visible;
  transform: translateX(0) scale(1);
  pointer-events: auto;
}

/* Form Fields */
.field {
  margin-bottom: 40px;
}

.field:last-of-type {
  margin-bottom: 48px;
}

.label {
  font-family: var(--font-serif);
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 0.4em;
  margin-bottom: 14px;
  display: block;
  text-transform: uppercase;
  font-weight: 400;
  padding-left: 2px;
}

/* Input Styling */
input[type="text"] {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--border);
  background: transparent;
  padding: 14px 0;
  font-size: 16px;
  font-family: var(--font-serif);
  color: var(--text-main);
  outline: none;
  transition: var(--transition-fast);
  border-radius: 0;
  letter-spacing: 0.02em;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

input[type="text"]:focus {
  border-bottom-color: var(--text-main);
  padding-left: 6px;
}

input[type="text"]::placeholder {
  color: var(--text-placeholder);
  letter-spacing: 0.04em;
  font-weight: 300;
}

input[type="text"]:-webkit-autofill,
input[type="text"]:-webkit-autofill:hover,
input[type="text"]:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--text-main);
  -webkit-box-shadow: 0 0 0 100px var(--bg) inset;
  transition: background-color 5000s ease-in-out 0s;
}

/* Platform Grid */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.platform-btn {
  background: transparent;
  border: 1px solid var(--border);
  padding: 12px 14px;
  font-size: 9px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-muted);
  cursor: pointer;
  letter-spacing: 0.15em;
  transition: var(--transition-fast);
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 0;
}

.platform-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--text-main);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.platform-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-main);
}

.platform-btn.active {
  background: var(--text-main);
  color: var(--bg);
  border-color: var(--text-main);
}

.platform-btn.active::before {
  opacity: 1;
}

.platform-btn span {
  position: relative;
  z-index: 1;
}

.platform-btn img {
  width: 13px;
  height: 13px;
  opacity: 0.7;
  transition: var(--transition-fast);
  filter: grayscale(100%);
  position: relative;
  z-index: 1;
}

[data-theme="dark"] .platform-btn img {
  filter: grayscale(100%) invert(1);
}

.platform-btn:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

[data-theme="dark"] .platform-btn:hover img {
  filter: grayscale(0%) invert(1);
}

.platform-btn.active img {
  filter: brightness(0) invert(1);
  opacity: 1;
}

[data-theme="dark"] .platform-btn.active img {
  filter: brightness(0) invert(0);
}

/* Query Button */
.query-btn {
  width: 100%;
  padding: 18px 24px;
  background: var(--text-main);
  color: var(--bg);
  border: none;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition-fast);
  margin-top: 4px;
  position: relative;
  overflow: hidden;
  border-radius: 0;
  box-sizing: border-box;
}

.query-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.query-btn:hover {
  background-color: var(--text-muted);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .query-btn:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.query-btn:hover::after {
  opacity: 1;
}

.query-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.query-btn:disabled {
  background: var(--text-dim);
  cursor: wait;
  transform: none;
  box-shadow: none;
}

.query-btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

/* Loading Animation */
@keyframes lineGrow {
  0% { transform: scaleX(0); transform-origin: left; }
  50% { transform: scaleX(1); transform-origin: left; }
  50.1% { transform: scaleX(1); transform-origin: right; }
  100% { transform: scaleX(0); transform-origin: right; }
}

.loading-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  overflow: hidden;
}

.loading-line::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 100%;
  background: rgba(255, 255, 255, 0.3);
  animation: lineGrow 1.5s infinite cubic-bezier(0.65, 0, 0.35, 1);
}

/* Result Panel */
.result-content {
  padding-top: 4px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.hero-img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  filter: grayscale(100%) opacity(0.7);
  transition: all 1s ease;
  border: 1px solid var(--border);
  padding: 2px;
  background: var(--card);
  border-radius: 0;
  flex-shrink: 0;
}

[data-theme="dark"] .hero-img {
  filter: grayscale(100%) opacity(0.5);
}

.container.has-result .hero-img {
  filter: grayscale(0%) opacity(1);
}

.hero-title {
  font-family: var(--font-serif);
}

.hero-name {
  font-size: 24px;
  font-weight: 400;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
  position: relative;
  display: inline-block;
}

.hero-alias {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  font-style: normal;
}

/* Power List */
.power-list {
  list-style: none;
}

.power-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}

.power-item:last-child {
  border-bottom: none;
  padding-top: 24px;
  margin-top: 4px;
}

.power-label {
  font-family: var(--font-serif);
  font-size: 9px;
  color: var(--text-muted);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  white-space: nowrap;
}

.power-val {
  font-family: var(--font-serif);
  font-size: 18px;
  letter-spacing: 0.05em;
  color: var(--text-main);
  font-weight: 400;
  flex-shrink: 0;
}

.power-val.guobiao,
.power-label.guobiao {
  font-weight: 500;
  font-size: 20px;
  letter-spacing: 0.08em;
}

/* Empty State */
.empty-state {
  height: 100%;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-family: var(--font-serif);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 0.25em;
  text-align: center;
  font-weight: 300;
}

/* Footer */
.footer {
  margin-top: auto;
  padding-top: 48px;
  font-size: 8px;
  color: var(--text-dim);
  letter-spacing: 0.25em;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', 'Droid Sans Mono', 'Source Code Pro', monospace;
}

.footer a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: var(--text-main);
}

/* Responsive Design */
@media (max-width: 1024px) {
  :root {
    --panel-gap: 48px;
  }

  body {
    padding: 32px 24px;
  }

  .container {
    gap: 48px;
  }

  .header {
    padding: 0 0 24px;
    margin-bottom: 8px;
  }

  .header h1 {
    font-size: 10px;
    margin-bottom: 14px;
  }

  .logo img {
    width: 28px;
    height: 28px;
  }
}

@media (max-width: 768px) {
  :root {
    --container-width: 100%;
    --panel-gap: 32px;
    --panel-min-width: 100%;
  }

  body {
    padding: 0;
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    position: relative;
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
  }

  body::before {
    content: '';
    flex: 1;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  }

  body.has-result::before {
    flex: 0;
    min-height: 40px;
  }

  body::after {
    content: '';
    flex: 1;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  }

  body.has-result::after {
    flex: 0;
    min-height: 40px;
  }

  .header {
    padding: 0 20px;
    margin-bottom: 48px;
    margin-top: 0;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    width: 100%;
    flex-shrink: 0;
  }

  body.has-result .header {
    margin-bottom: 32px;
  }

  .header h1 {
    font-size: 11px;
    letter-spacing: 0.4em;
    margin-bottom: 12px;
  }

  .header .line {
    height: 24px;
  }

  .logo img {
    width: 28px;
    height: 28px;
  }

  .container {
    flex-direction: column;
    gap: 48px;
    max-width: 100%;
    width: 100%;
    padding: 0 20px;
    transition: none;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-shrink: 0;
  }

  body.has-result .container {
    /* No transform on mobile */
  }

  .panel {
    flex: none;
    width: 100%;
    max-width: 100%;
    position: relative !important;
    transform: none !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    box-sizing: border-box;
  }

  .result-panel {
    position: relative;
    left: auto;
    transform: none;
    opacity: 0;
    visibility: hidden;
    height: 0;
    margin-top: 0;
    overflow: hidden;
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    max-width: 100%;
    box-sizing: border-box;
  }

  body.has-result .result-panel {
    opacity: 1;
    visibility: visible;
    height: auto;
    margin-top: 24px;
  }

  .result-panel::before {
    display: none;
  }

  .container.has-result .search-panel {
    transform: none;
  }

  .field {
    margin-bottom: 36px;
  }

  .field:last-of-type {
    margin-bottom: 40px;
  }

  .label {
    font-size: 10px;
    margin-bottom: 12px;
    letter-spacing: 0.2em;
  }

  input[type="text"] {
    padding: 16px 0;
    font-size: 16px;
  }

  .platform-grid {
    gap: 12px;
  }

  .platform-btn {
    padding: 14px 16px;
    font-size: 10px;
    min-height: 48px;
  }

  .platform-btn img {
    width: 14px;
    height: 14px;
  }

  .query-btn {
    padding: 18px 24px;
    font-size: 11px;
    min-height: 52px;
    margin-top: 8px;
    letter-spacing: 0.3em;
  }

  .hero-meta {
    gap: 18px;
    margin-bottom: 32px;
    padding-bottom: 24px;
  }

  .hero-img {
    width: 60px;
    height: 60px;
  }

  .hero-name {
    font-size: 24px;
  }

  .hero-alias {
    font-size: 12px;
  }

  .power-item {
    padding: 20px 0;
    min-height: 52px;
  }

  .power-label {
    font-size: 12px;
    letter-spacing: 0.15em;
  }

  .power-val {
    font-size: 20px;
  }

  .power-val.guobiao,
  .power-label.guobiao {
    font-size: 22px;
  }

  .footer {
    position: relative;
    bottom: auto;
    padding: 60px 20px 40px 20px;
    font-size: 8px;
    margin-top: 0;
    transition: opacity 0.6s ease;
    flex-shrink: 0;
  }

  body.has-result .footer {
    opacity: 0.4;
  }
}

@media (max-width: 480px) {
  body::before {
    min-height: 0;
  }

  body::after {
    min-height: 0;
  }

  .header {
    margin-bottom: 36px;
    padding: 0 24px;
  }

  body.has-result .header {
    margin-bottom: 24px;
  }

  .container {
    padding: 0 24px;
    gap: 40px;
  }

  .footer {
    padding: 48px 24px 32px 24px;
  }
}

@media (max-width: 360px) {
  .header {
    padding: 0 14px;
  }

  .header h1 {
    font-size: 9px;
    letter-spacing: 0.3em;
  }

  .container {
    padding: 0 14px;
  }

  .label {
    font-size: 8px;
  }

  input[type="text"] {
    font-size: 14px;
  }

  .platform-btn {
    font-size: 8px;
    padding: 8px 10px;
  }

  .query-btn {
    font-size: 9px;
    letter-spacing: 0.2em;
  }

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

  .footer {
    padding: 40px 14px 24px 14px;
  }
}

/* Smooth appear animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInScale {
  from {
    opacity: 0;
    transform: translateX(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

.container.has-result .hero-meta {
  animation: slideInScale 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
  opacity: 0;
}

.container.has-result .power-item {
  animation: fadeInUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  opacity: 0;
}

.container.has-result .power-item:nth-child(1) { animation-delay: 0.4s; }
.container.has-result .power-item:nth-child(2) { animation-delay: 0.5s; }
.container.has-result .power-item:nth-child(3) { animation-delay: 0.6s; }
.container.has-result .power-item:nth-child(4) { animation-delay: 0.7s; }