:root {
  /* 프리미엄 딥블루 다크모드 및 하이테크 네온 글로우 테마 설정 */
  --bg: #030812;
  --bg-glow: radial-gradient(circle at 50% -20%, #15336c, transparent 60%);
  --panel: rgba(8, 18, 38, 0.45);
  --panel-strong: rgba(10, 24, 52, 0.75);
  --line: rgba(135, 190, 255, 0.09);
  --line-hover: rgba(101, 215, 255, 0.25);
  --text: #f1f5f9;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-glow: rgba(56, 189, 248, 0.15);
  --accent-2: #34d399;
  --danger: #f87171;
  --shadow: 0 24px 64px -16px rgba(0, 0, 0, 0.65);
  --shadow-glow: 0 0 40px rgba(56, 189, 248, 0.08);
  --radius: 24px;
  --radius-sm: 16px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html,
body {
  min-height: 100%;
  font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  background-image: 
    var(--bg-glow),
    radial-gradient(circle at 80% 60%, rgba(52, 211, 153, 0.03), transparent 30%),
    linear-gradient(180deg, #030812 0%, #050d1d 50%, #02050b 100%);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
}

.page-shell {
  /* 기존 1280px에서 1440px로 가로폭을 시원하게 늘려 와이드 모니터 대응 */
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 60px;
}

.hero {
  display: grid;
  /* 뉴스 요약과 검색창의 가로 비중을 이상적으로 다듬음 */
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: stretch;
  margin-bottom: 32px;
}

.hero-copy,
.hero-panel,
.card,
.summary-bar {
  /* 글래스모피즘(Glassmorphism) 효과를 위한 백드롭 필터 및 반투명 보더 */
  backdrop-filter: blur(20px) saturate(120%);
  -webkit-backdrop-filter: blur(20px) saturate(120%);
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.hero-copy {
  border-radius: var(--radius);
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background:
    linear-gradient(135deg, rgba(8, 20, 42, 0.8), rgba(4, 11, 24, 0.5)),
    var(--panel);
  position: relative;
  overflow: hidden;
}

.hero-copy::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.eyebrow,
.section-kicker,
.summary-label {
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff 60%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-text {
  margin-top: 24px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.75;
  font-weight: 400;
}

.hero-panel {
  border-radius: var(--radius);
  padding: 32px;
  background:
    linear-gradient(160deg, rgba(10, 24, 52, 0.7), rgba(4, 11, 24, 0.4)),
    var(--panel);
}

.search-card {
  height: 100%;
  border-radius: var(--radius-sm);
  padding: 28px;
  background: rgba(5, 12, 26, 0.4);
  border: 1px solid rgba(56, 189, 248, 0.08);
}

.search-label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #93c5fd;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.search-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

.search-row input {
  width: 100%;
  padding: 16px 20px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.15);
  background: rgba(3, 8, 18, 0.6);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition);
}

.search-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15), inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

.search-row button {
  padding: 0 28px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 1rem;
  border: 0;
  cursor: pointer;
  color: #ffffff;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
  transition: var(--transition);
}

.search-row button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.4);
  background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
}

.search-row button:active {
  transform: translateY(0);
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 20px;
}

.mode-switch {
  display: inline-flex;
  gap: 6px;
  background: rgba(3, 8, 18, 0.5);
  padding: 4px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.mode-button {
  min-width: 68px;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  border: 0;
  cursor: pointer;
  color: var(--muted);
  background: transparent;
  transition: var(--transition);
}

.mode-button:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.mode-button.active {
  color: #ffffff;
  background: linear-gradient(135deg, #0284c7 0%, #0ea5e9 100%);
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.3);
}
.filter-row {
  margin-top: 16px;
  display: flex;
}

.filter-row input {
  width: 100%;
  max-width: 360px;
  padding: 10px 18px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.15);
  background: rgba(3, 8, 18, 0.6);
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  transition: var(--transition);
}

.filter-row input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.search-hint {
  margin-top: 20px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 16px;
}

.search-feedback {
  margin-top: 16px;
  padding: 14px 18px;
  min-height: 48px;
  border-radius: 12px;
  color: #bae6fd;
  background: rgba(56, 189, 248, 0.05);
  border: 1px solid rgba(56, 189, 248, 0.12);
  font-size: 0.9rem;
  line-height: 1.5;
  display: flex;
  align-items: center;
  gap: 8px;
}

.search-feedback.is-error {
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.05);
  border-color: rgba(239, 68, 68, 0.15);
}

.dashboard {
  margin-top: 32px;
  scroll-margin-top: 24px;
}

.summary-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 24px 32px;
  border-radius: var(--radius);
  background: rgba(8, 18, 38, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.03);
  margin-bottom: 32px;
}

.summary-bar > div {
  position: relative;
  padding-left: 20px;
}

.summary-bar > div:not(:first-child)::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background: rgba(255, 255, 255, 0.08);
}

.summary-bar strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  margin-top: 4px;
  letter-spacing: -0.02em;
  color: #ffffff;
}

.content-grid {
  display: grid;
  /* 뉴스 영역을 1.9fr로 넓혀 가독성을 늘림 */
  grid-template-columns: minmax(320px, 1.1fr) minmax(0, 1.9fr);
  gap: 32px;
  align-items: start;
}

/* 주식 데이터 패널이 숨겨져 있을 때 리스트가 100% 전체 화면 너비를 시원하게 채우도록 CSS `:has` 선택자 적용 */
.content-grid:has(#stockPanel[hidden]) {
  grid-template-columns: 1fr;
}

.card {
  border-radius: var(--radius);
  padding: 32px;
  background: rgba(8, 18, 38, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.card-head-stack {
  align-items: stretch;
}

.card h2 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #ffffff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.price-box {
  text-align: right;
}

.price-box strong {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #ffffff;
}

.price-box span {
  font-size: 0.95rem;
  font-weight: 600;
}

.chart-area {
  margin-top: 24px;
  padding: 20px;
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(3, 8, 18, 0.9), rgba(5, 12, 26, 0.6));
  border: 1px solid rgba(56, 189, 248, 0.08);
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.5);
}

#stockChart {
  width: 100%;
  height: 260px;
  display: block;
}

.status-message {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.news-list {
  display: grid;
  /* 리스트 아이템들의 자진 마진을 넓혀 정보 간격을 시원하게 확장 */
  gap: 20px;
}

.news-item {
  padding: 24px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.04);
  background: linear-gradient(180deg, rgba(8, 18, 38, 0.6), rgba(5, 12, 26, 0.35));
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.news-item:hover {
  /* 카드 호버 시 살짝 위로 떠오르고 테두리가 영롱하게 반응하며 은은한 발광 효과 추가 */
  transform: translateY(-3px);
  border-color: rgba(56, 189, 248, 0.3);
  background: linear-gradient(180deg, rgba(10, 24, 52, 0.75), rgba(6, 15, 33, 0.5));
  box-shadow: 
    0 16px 36px -12px rgba(0, 0, 0, 0.7),
    0 0 24px rgba(56, 189, 248, 0.04);
}

.news-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}

.news-source {
  color: var(--accent);
  font-weight: 600;
}

.news-title {
  display: inline-block;
  margin-top: 12px;
  color: var(--text);
  text-decoration: none;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.015em;
  transition: color 0.2s ease;
}

.news-title:hover {
  color: #58c7ff;
}

.news-original {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.empty-state {
  padding: 40px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  text-align: center;
  background: rgba(5, 12, 26, 0.25);
  border: 1.5px dashed rgba(56, 189, 248, 0.15);
  font-size: 0.98rem;
}

.change-up {
  color: var(--accent-2);
}

.change-down {
  color: var(--danger);
}

@media (max-width: 980px) {
  .hero,
  .content-grid,
  .summary-bar {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 20px, 1280px);
    padding-top: 16px;
  }

  .hero-copy,
  .hero-panel,
  .card,
  .summary-bar {
    padding: 20px;
    border-radius: 24px;
  }

  .search-row {
    grid-template-columns: 1fr;
  }

  .search-row button {
    min-height: 52px;
  }
}

/* 유튜브 썸네일 레이아웃 및 재생 버튼 오버레이 */
.news-item:has(.news-thumbnail-container:not([hidden])) {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.news-thumbnail-container {
  position: relative;
  flex-shrink: 0;
  width: 180px;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #020710;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.news-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-item:hover .news-thumbnail {
  transform: scale(1.06);
}

.play-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(3, 8, 18, 0.5);
  opacity: 0;
  transition: var(--transition);
}

.news-item:hover .play-overlay {
  opacity: 1;
}

.play-overlay svg {
  width: 44px;
  height: 44px;
  color: #ffffff;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.5));
  transition: transform 0.2s ease;
}

.play-overlay:hover svg {
  transform: scale(1.1);
}

.news-content-area {
  flex-grow: 1;
}

/* SNS 플랫폼 뱃지 스타일 */
.badge-sns {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  color: #ffffff;
  margin-right: 10px;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  vertical-align: middle;
}

.badge-twitter {
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.badge-instagram {
  background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

.badge-threads {
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.badge-facebook {
  background: #1877f2;
}

.badge-youtube {
  background: #ff0000;
}

/* 태블릿 및 소형 디스크톱 화면 최적화 */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .content-grid {
    grid-template-columns: 1fr;
  }
}

/* 모바일 디바이스 최적화 */
@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 24px, 1440px);
    padding-top: 24px;
  }

  .hero-copy {
    padding: 32px 24px;
  }

  .hero-panel,
  .card,
  .summary-bar {
    padding: 24px 20px;
  }

  .summary-bar {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .summary-bar > div:not(:first-child)::before {
    display: none;
  }

  .summary-bar > div {
    padding-left: 0;
    padding-bottom: 12px;
  }

  .summary-bar > div:not(:last-child) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .search-row {
    grid-template-columns: 1fr;
  }

  .search-row button {
    height: 52px;
  }

  .news-item:has(.news-thumbnail-container:not([hidden])) {
    flex-direction: column;
    gap: 16px;
  }

  .news-thumbnail-container {
    width: 100%;
  }
}