/* =============================================================================
   IPO Investment Dashboard — Coinbase-inspired Design System
   Dark theme with Coinbase Blue accent (#0052ff)
   ============================================================================= */

/* ---------------------------------------------------------------------------
   0. CSS Custom Properties (Design Tokens)
   --------------------------------------------------------------------------- */

:root {
  /* Colors — Coinbase palette */
  --color-bg:           #0a0b0d;
  --color-surface:      #111318;
  --color-surface-2:    #181c24;
  --color-border:       rgba(91, 97, 110, 0.2);
  --color-border-hover: rgba(91, 97, 110, 0.4);

  --color-text-primary:   #f0f2f5;
  --color-text-secondary: #8b919e;
  --color-text-muted:     #4a5060;

  /* Coinbase Blue as singular accent */
  --color-accent:       #0052ff;
  --color-accent-hover: #578bfa;
  --color-accent-dim:   rgba(0, 82, 255, 0.12);
  --color-success:      #34d399;
  --color-success-dim:  rgba(52, 211, 153, 0.12);
  --color-warning:      #fbbf24;
  --color-warning-dim:  rgba(251, 191, 36, 0.12);
  --color-danger:       #f87171;
  --color-danger-dim:   rgba(248, 113, 113, 0.12);
  --color-neutral:      #94a3b8;

  /* Typography — Inter (CoinbaseSans substitute) */
  --font-sans:  "Inter", "Pretendard Variable", "Pretendard", -apple-system,
                BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:  "JetBrains Mono", "Fira Code", monospace;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Effects — Coinbase radius scale */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-pill: 56px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.4), 0 4px 16px rgba(0,0,0,0.2);
  --transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------------------------------------------------------------------------
   1. Reset & Base
   --------------------------------------------------------------------------- */

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---------------------------------------------------------------------------
   2. Layout
   --------------------------------------------------------------------------- */

.app {
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  min-height: 100vh;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ---------------------------------------------------------------------------
   3. Header
   --------------------------------------------------------------------------- */

.header {
  border-bottom: 1px solid var(--color-border);
  background: rgba(10, 11, 13, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__logo-mark {
  width: 32px;
  height: 32px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #fff;
  flex-shrink: 0;
}

.header__title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--color-text-primary);
}

.header__updated {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ---------------------------------------------------------------------------
   4. Navigation Tabs
   --------------------------------------------------------------------------- */

.tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-6);
  background: var(--color-surface);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tabs::-webkit-scrollbar { display: none; }

.tab-btn {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
  margin-bottom: -1px;
  flex-shrink: 0;
}

.tab-btn:hover {
  color: var(--color-text-primary);
}

.tab-btn.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* ---------------------------------------------------------------------------
   5. Main Content
   --------------------------------------------------------------------------- */

.main {
  padding: var(--space-8) var(--space-6);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---------------------------------------------------------------------------
   6. Stats Cards
   --------------------------------------------------------------------------- */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  transition: border-color var(--transition);
}

.stat-card:hover {
  border-color: var(--color-border-hover);
}

.stat-card__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.stat-card__value {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--color-text-primary);
  line-height: 1;
}

.stat-card__sub {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
}

/* ---------------------------------------------------------------------------
   7. Section
   --------------------------------------------------------------------------- */

.section {
  margin-bottom: var(--space-8);
}

.section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.section__title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.3px;
}

.section__count {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  padding: var(--space-1) var(--space-3);
  border-radius: 9999px;
  border: 1px solid var(--color-border);
}

/* ---------------------------------------------------------------------------
   8. Table (Desktop)
   --------------------------------------------------------------------------- */

.table-wrapper {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.data-table thead {
  background: var(--color-surface-2);
}

.data-table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
  border-bottom: 1px solid var(--color-border);
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-primary);
  vertical-align: middle;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.data-table .text-right  { text-align: right; }
.data-table .text-mono   { font-family: var(--font-mono); font-size: var(--text-xs); }

/* Empty state */
.empty-state {
  padding: var(--space-16) var(--space-8);
  text-align: center;
  color: var(--color-text-muted);
}
.empty-state__icon { font-size: 2rem; margin-bottom: var(--space-3); }
.empty-state__text { font-size: var(--text-sm); }

/* ---------------------------------------------------------------------------
   9. Status Badges
   --------------------------------------------------------------------------- */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  border-radius: 9999px;
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
}

.badge--info    { background: var(--color-accent-dim);   color: var(--color-accent-hover); }
.badge--success { background: var(--color-success-dim);  color: var(--color-success); }
.badge--warning { background: var(--color-warning-dim);  color: var(--color-warning); }
.badge--neutral { background: rgba(148,163,184,0.1);     color: var(--color-neutral); }

/* ---------------------------------------------------------------------------
   10. Change Percentage
   --------------------------------------------------------------------------- */

.change {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
}
.change--up   { color: var(--color-success); }
.change--down { color: var(--color-danger); }
.change--flat { color: var(--color-text-muted); }

/* ---------------------------------------------------------------------------
   11. Footer
   --------------------------------------------------------------------------- */

.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer a {
  color: var(--color-text-secondary);
  text-decoration: none;
}
.footer a:hover { color: var(--color-text-primary); }

/* ---------------------------------------------------------------------------
   12. Loading Skeleton
   --------------------------------------------------------------------------- */

@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-2) 25%,
    rgba(255,255,255,0.04) 50%,
    var(--color-surface-2) 75%
  );
  background-size: 800px 100%;
  animation: shimmer 1.4s infinite linear;
  border-radius: var(--radius-sm);
  height: 1em;
  width: 100%;
}

/* ---------------------------------------------------------------------------
   13. 상세 모달
   --------------------------------------------------------------------------- */

.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}
.modal-backdrop.open { display: flex; }

.modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border-hover);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.modal__title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
}
.modal__meta {
  margin-top: var(--space-1);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.modal__close {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.modal__close:hover {
  color: var(--color-text-primary);
  background: var(--color-surface-2);
}

.modal__tabs {
  display: flex;
  gap: 0;
  padding: 0 var(--space-6);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  scrollbar-width: none;
  flex-shrink: 0;
}
.modal__tabs::-webkit-scrollbar { display: none; }

.modal-tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
  margin-bottom: -1px;
  white-space: nowrap;
  flex-shrink: 0;
}
.modal-tab:hover  { color: var(--color-text-primary); }
.modal-tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.modal__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6);
  -webkit-overflow-scrolling: touch;
}

.modal-panel { display: none; }
.modal-panel.active { display: block; }

/* 상세 정보 그리드 */
.detail-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-2) var(--space-4);
}
.detail-grid dt {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding-top: 2px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.detail-grid dd {
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
}
.detail-grid dd.text-normal { font-family: var(--font-sans); }

.modal__dart-link {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.modal__dart-link a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-accent);
  font-size: var(--text-sm);
  text-decoration: none;
}
.modal__dart-link a:hover { text-decoration: underline; }

/* 뉴스 / 커뮤니티 목록 */
.news-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.news-list li {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  transition: border-color var(--transition);
}
.news-list li:hover { border-color: var(--color-border-hover); }
.news-list a {
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  display: block;
  margin-bottom: var(--space-1);
  line-height: 1.45;
}
.news-list a:hover { color: var(--color-accent-hover); }
.news-list .news-date {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.news-list .news-source {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--color-accent-dim);
  color: var(--color-accent-hover);
  margin-bottom: var(--space-1);
}
.news-list .news-desc {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 커뮤니티 섹션 헤더 */
.community-section-title {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: var(--space-4) 0 var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}
.community-section-title:first-child { margin-top: 0; }

/* ---------------------------------------------------------------------------
   IPO 단계 타임라인
   --------------------------------------------------------------------------- */

.ipo-timeline {
  display: flex;
  align-items: flex-start;
  gap: 0;
  margin-bottom: var(--space-6);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: none;
}
.ipo-timeline::-webkit-scrollbar { display: none; }

.timeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  min-width: 72px;
  position: relative;
}

/* 선 (step 사이) */
.timeline-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 10px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}
.timeline-step.done:not(:last-child)::after,
.timeline-step.active:not(:last-child)::after {
  background: var(--color-accent);
}

/* 점 */
.timeline-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface-2);
  z-index: 1;
  flex-shrink: 0;
  transition: all var(--transition);
}
.timeline-step.done  .timeline-dot { background: var(--color-accent); border-color: var(--color-accent); }
.timeline-step.active .timeline-dot {
  background: var(--color-warning);
  border-color: var(--color-warning);
  box-shadow: 0 0 0 4px var(--color-warning-dim);
}

.timeline-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-2);
  white-space: nowrap;
}
.timeline-step.done   .timeline-label { color: var(--color-accent-hover); }
.timeline-step.active .timeline-label { color: var(--color-warning); }

.timeline-date {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 2px;
  font-family: var(--font-mono);
  white-space: nowrap;
}

/* ---------------------------------------------------------------------------
   클릭 가능한 행 */
.data-table tbody tr.clickable {
  cursor: pointer;
}
.data-table tbody tr.clickable:hover td:first-child strong {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* ---------------------------------------------------------------------------
   14. Responsive — 모바일 (≤640px)
   --------------------------------------------------------------------------- */

@media (max-width: 640px) {
  /* 기본 여백 축소 */
  .container,
  .main {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .main {
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
  }

  .tabs {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  /* Stats: 2열 그리드 */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-6);
  }

  .stat-card {
    padding: var(--space-3) var(--space-4);
  }

  .stat-card__value {
    font-size: var(--text-xl);
  }

  /* ── 테이블 → 카드 변환 ── */
  .table-wrapper {
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    overflow: visible;
  }

  /* thead 숨김 */
  .data-table thead {
    display: none;
  }

  /* 테이블 블록화 */
  .data-table,
  .data-table tbody {
    display: block;
    width: 100%;
  }

  /* 각 행 → 카드 */
  .data-table tbody tr {
    display: block;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
    overflow: hidden;
    transition: border-color var(--transition);
  }

  .data-table tbody tr:hover {
    border-color: var(--color-border-hover);
  }

  /* 카드 내 각 셀: label - value 행 */
  .data-table tbody td {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    font-size: var(--text-sm);
    text-align: left !important;
    white-space: normal;
  }

  .data-table tbody tr td:last-child {
    border-bottom: none;
  }

  /* 마지막 행 하단 border 복원 (desktop override 제거) */
  .data-table tbody tr:last-child td {
    border-bottom: 1px solid var(--color-border);
  }
  .data-table tbody tr:last-child td:last-child {
    border-bottom: none;
  }

  /* data-label이 있는 경우만 레이블 표시 */
  .data-table tbody td[data-label]::before {
    content: attr(data-label);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    flex-shrink: 0;
    min-width: 72px;
    padding-top: 1px;
  }

  /* hover 배경 효과 제거 (카드 자체에 border hover 적용) */
  .data-table tbody tr:hover td {
    background: none;
  }

  /* 첫 번째 td (기업명)는 카드 헤더처럼 강조 */
  .data-table tbody td:first-child {
    background: var(--color-surface-2);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    font-weight: 600;
    border-bottom: 1px solid var(--color-border);
    justify-content: space-between;
  }

  /* 기업명 셀은 label 불필요 */
  .data-table tbody td:first-child::before {
    display: none;
  }

  /* 모바일에서 clickable 행 underline */
  .data-table tbody tr.clickable:hover td:first-child strong {
    color: var(--color-accent-hover);
    text-decoration: underline;
  }

  /* ── 모달 전체화면 ── */
  .modal-backdrop {
    padding: 0;
    align-items: flex-end;
  }

  .modal {
    max-width: 100%;
    max-height: 92vh;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    border-bottom: none;
  }

  .modal__header {
    padding: var(--space-4) var(--space-4) var(--space-3);
  }

  .modal__title {
    font-size: var(--text-lg);
  }

  .modal__tabs {
    padding: 0 var(--space-4);
  }

  .modal__body {
    padding: var(--space-4);
  }

  /* 상세 그리드 1열 */
  .detail-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .detail-grid dt {
    margin-bottom: 0;
  }

  .detail-grid dd {
    color: var(--color-text-primary);
  }
}

/* ---------------------------------------------------------------------------
   15. Responsive — 태블릿 (641px ~ 1024px)
   --------------------------------------------------------------------------- */

@media (min-width: 641px) and (max-width: 1024px) {
  .container,
  .main,
  .tabs {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 테이블이 넘치면 가로 스크롤 허용 */
  .table-wrapper {
    overflow-x: auto;
  }

  .data-table {
    min-width: 600px;
  }
}