:root {
  --bg: #f3f6fa;
  --surface: #ffffff;
  --surface-strong: #edf2f7;
  --text: #17202f;
  --muted: #647084;
  --line: #d8e0ea;
  --accent: #0f8b8d;
  --accent-dark: #096668;
  --positive: #138a4f;
  --negative: #c43f3f;
  --warning: #bf7913;
  --shadow: 0 18px 44px rgba(23, 32, 47, 0.11);
}

body.dark {
  --bg: #111827;
  --surface: #1f2937;
  --surface-strong: #273345;
  --text: #f7f9fc;
  --muted: #aeb8c8;
  --line: #3c485c;
  --accent: #2dd4bf;
  --accent-dark: #14b8a6;
  --shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans KR", system-ui, sans-serif;
}

button,
input,
select {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav,
main,
.site-footer {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
}

.nav-links {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-weight: 800;
  font-size: 0.94rem;
}

.hero-section {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  align-items: center;
  gap: 42px;
  padding: 48px 0 30px;
}

.hero-copy h1 {
  max-width: 720px;
  margin: 10px 0 18px;
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-text,
.notice-band span,
.help-box p,
.rule-grid p,
.reason {
  color: var(--muted);
  line-height: 1.7;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-actions,
.button-row,
.inline-input,
.panel-top,
.row-title,
.quick-stats {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-actions {
  flex-wrap: wrap;
  margin-top: 26px;
}

.primary-button,
.ghost-button,
.mini-button {
  min-height: 42px;
  border-radius: 8px;
  padding: 0 16px;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-weight: 800;
}

.primary-button {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 24px rgba(15, 139, 141, 0.24);
}

.primary-button:hover {
  background: var(--accent-dark);
}

.ghost-button,
.mini-button {
  background: var(--surface);
  color: var(--text);
  border-color: var(--line);
}

.small-button,
.mini-button {
  min-height: 34px;
  padding-inline: 12px;
  font-size: 0.88rem;
}

.full-width {
  width: 100%;
}

.market-panel,
.control-panel,
.result-panel,
.table-wrap,
.rules-section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.market-panel,
.control-panel,
.result-panel,
.rules-section {
  padding: 24px;
}

.panel-top,
.row-title {
  justify-content: space-between;
}

.panel-top span,
.quick-stats span,
.field span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 800;
}

.panel-top strong {
  color: var(--accent);
}

canvas {
  width: 100%;
  margin: 16px 0;
  background: var(--surface-strong);
  border-radius: 8px;
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.quick-stats div {
  padding: 12px;
  background: var(--surface-strong);
  border-radius: 8px;
}

.quick-stats strong {
  display: block;
  margin-top: 4px;
}

.notice-band {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 26px;
  padding: 16px 18px;
  background: rgba(191, 121, 19, 0.12);
  border: 1px solid rgba(191, 121, 19, 0.28);
  border-radius: 8px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.control-panel {
  position: sticky;
  top: 92px;
}

.section-title {
  margin-bottom: 20px;
}

.section-title h2 {
  margin: 6px 0 0;
  font-size: 1.55rem;
}

.field {
  display: grid;
  gap: 9px;
  margin-bottom: 18px;
}

input,
select {
  width: 100%;
  min-height: 44px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
  color: var(--text);
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(15, 139, 141, 0.15);
}

.button-row {
  margin: -4px 0 18px;
}

.api-key-grid {
  display: grid;
  gap: 12px;
}

.inline-input {
  align-items: stretch;
}

.inline-input input {
  min-width: 0;
}

.help-box {
  margin-top: 18px;
  padding: 14px;
  border-radius: 8px;
  background: var(--surface-strong);
}

.search-results {
  display: grid;
  gap: 8px;
  margin: -4px 0 18px;
}

.search-result {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
}

.search-result strong,
.search-result span {
  display: block;
}

.search-result span {
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.help-box p {
  margin: 6px 0 0;
  font-size: 0.92rem;
}

.recommendation-list {
  display: grid;
  gap: 14px;
}

.stock-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  padding: 18px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.stock-card h3 {
  margin: 0;
}

.stock-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}

.tag {
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  background: rgba(15, 139, 141, 0.12);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
}

.score-box {
  min-width: 132px;
  text-align: right;
}

.score {
  display: block;
  color: var(--accent);
  font-size: 2rem;
  font-weight: 800;
}

.result-count {
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--muted);
  font-weight: 800;
}

.market-section,
.rules-section {
  margin-top: 26px;
}

.table-wrap {
  overflow-x: auto;
  padding: 0;
}

table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
}

th,
td {
  padding: 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-size: 0.86rem;
}

.positive {
  color: var(--positive);
  font-weight: 800;
}

.negative {
  color: var(--negative);
  font-weight: 800;
}

.warning {
  color: var(--warning);
  font-weight: 800;
}

.rule-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.rule-grid article {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-strong);
}

.rule-grid h3 {
  margin: 0 0 8px;
}

.rule-grid p {
  margin: 0;
}

.site-footer {
  padding: 22px 0 34px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 940px) {
  .hero-section,
  .dashboard-grid,
  .rule-grid {
    grid-template-columns: 1fr;
  }

  .hero-section {
    min-height: auto;
  }

  .control-panel {
    position: static;
  }
}

@media (max-width: 640px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-links,
  .button-row,
  .notice-band,
  .stock-card {
    flex-direction: column;
    align-items: stretch;
  }

  .quick-stats {
    grid-template-columns: 1fr;
  }

  .score-box {
    text-align: left;
  }
}