@charset "utf-8";
/* ======================================================
   비즈니스 AI 전용 CSS
====================================================== */

/* -----------------------------
   Tokens + Base (Scoped)
----------------------------- */
.biz-ai-wrap {
  /* type scale */
  --fz-xxs: 13px;
  --fz-xs : 14px;
  --fz-sm : 15px;
  --fz-md : 16px;
  --fz-lg : 18px;
  --fz-xl : 40px;

  /* colors */
  --c-text-main: #111111;
  --c-white: #ffffff;
  --c-black: #000000;

  --c-primary: #ee7b1a;
  --c-accent: #f09cff;

  --c-tab-text: #666666;
  --c-border: #dddddd;
  --c-border-light: #eeeeee;

  --c-bg-card: #f7f7f7;
  --c-bg-thumb: #f0f0f0;
  --c-bg-badge: #f5f5f5;

  --c-text-meta: #999999;
  --c-text-muted: #b6b6b6;

  /* radius (detail에서 사용) */
  --radius-lg: 18px;
  --radius-md: 12px;

  max-width: 1110px;
  margin: 0 auto 80px;
}

/* -----------------------------
   Header (공통)
----------------------------- */
.biz-ai-wrap .biz-ai-header {
  background: url(https://dbr.donga.com/images/common/biz_ai_top_bg.jpg) right center / cover no-repeat;
  color: var(--c-white);
  padding: 20px 30px;
  margin: 20px 0;
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  overflow:hidden;
}

.biz-ai-wrap .biz-ai-title-box {
  display:flex;
  gap:30px;
  align-items:center;
  position: relative;
}

.biz-ai-wrap .biz-ai-title-box h2 {
  font-size: var(--fz-xl);
  font-weight: 900;
  margin-bottom: 6px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent), var(--c-primary));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: bizAiFlowGradient 4s ease infinite;
  line-height: 1.1;
}

@keyframes bizAiFlowGradient {
  0% { background-position: 0% center; }
  50% { background-position: 100% center; }
  100% { background-position: 0% center; }
}

.biz-ai-wrap .particle {
  position:absolute;
  width:6px;
  height:6px;
  background: var(--c-accent);
  border-radius:50%;
  opacity:0.2;
  animation: bizAiFloatParticle 6s infinite ease-in-out;
}

.biz-ai-wrap .p1 { top:-10px; left:-10px; animation-delay:0s; }
.biz-ai-wrap .p2 { top:-15px; left:120px; animation-delay:1.5s; }
.biz-ai-wrap .p3 { top:20px; left:-20px; animation-delay:3s; }

@keyframes bizAiFloatParticle {
  0%   { transform: translate(0,0); opacity: 0.2; }
  50%  { transform: translate(5px, -12px); opacity: 0.7; }
  100% { transform: translate(0,0); opacity: 0.2; }
}

.biz-ai-wrap .biz-ai-title-box p {
  font-size: var(--fz-md);
  line-height: 1.4;
  opacity: 0;
  transform: translateY(10px);
  animation: bizAiFadeUp 0.6s ease forwards;
  animation-delay: 0.15s;
}

@keyframes bizAiFadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.biz-ai-wrap .biz-ai-note {
  font-size: var(--fz-xs);
  opacity:.7;
  margin-top:2px;
}

/* ==========================================================================
   LIST PAGE
   ========================================================================== */

/* 탭 메뉴 */
.biz-ai-wrap .biz-ai-tabs {
  background: transparent;
  padding: 20px 0;
  display:flex;
  gap:10px;
}

.biz-ai-wrap .biz-ai-tab {
  font-size: var(--fz-sm);
  padding: 7px 16px;
  border: 1px solid var(--c-border);
  border-radius: 50px;
  color: var(--c-tab-text);
  background: var(--c-white);
  cursor:pointer;
}

.biz-ai-wrap .biz-ai-tab.is-active {
  background: var(--c-primary);
  color: var(--c-white);
  border-color: var(--c-primary);
}

/* 리스트 레이아웃 */
.biz-ai-wrap .biz-ai-list-wrap {}

.biz-ai-wrap .biz-ai-grid {
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px 24px;
}

/* 강의 카드 */
.biz-ai-wrap .course-card {
  border: 1px solid var(--c-border-light);
  background: var(--c-bg-card);
  padding: 14px 14px 18px;
  display:flex;
  flex-direction:column;
  text-decoration:none;
  color: inherit;
}

.biz-ai-wrap .course-thumb {
  position:relative;
  width:100%;
  padding-top:62.5%;
  overflow:hidden;
  background: var(--c-bg-thumb);
}

.biz-ai-wrap .course-thumb span.badge {
  position:absolute;
  top:10px;
  right:10px;
  font-size: var(--fz-xxs);
  padding: 3px 8px;
  border-radius: 50px;
  background: rgb(0, 0, 0, 0.65);
  color: #fff;
  border: 1px solid  rgb(255, 255, 255, 0.35);
  z-index: 99;
}

.biz-ai-wrap .course-thumb img {
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  transition: transform 0.4s ease;
}

.biz-ai-wrap .course-card:hover .course-thumb img {
  transform: scale(1.1);
}

.biz-ai-wrap .course-meta {
  margin-top: 12px;
  font-size: var(--fz-xxs);
  color: var(--c-text-meta);
}

.biz-ai-wrap .course-meta span + span::before {
  content:"|";
  padding: 0 4px;
  color: var(--c-border);
}

.biz-ai-wrap .course-title {
  margin-top: 6px;
  font-size: var(--fz-lg);
  line-height: 1.5;
  font-weight: 600;
  word-break: keep-all;
  min-height: 46px;
}

.biz-ai-wrap .course-price {
  margin-top: 10px;
  font-size: var(--fz-sm);
  display:flex;
  align-items:baseline;
  gap:6px;
  justify-content:flex-end;
}

.biz-ai-wrap .course-price .original {
  text-decoration: line-through;
  color: var(--c-text-muted);
  font-size: var(--fz-xs);
}

.biz-ai-wrap .course-price .sale {
  font-size: var(--fz-lg);
  font-weight: 700;
}

/* ==========================================================================
   DETAIL PAGE
   ========================================================================== */

.biz-ai-wrap .detail-top {
  padding: 20px 0;
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items:start;
}

.biz-ai-wrap .detail-media {
  background: var(--c-bg-thumb);
  border: 1px solid var(--c-border-light);
  overflow:hidden;
  position:relative;
  min-height:320px;
}

.biz-ai-wrap .detail-media img {
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  min-height:320px;
}

.biz-ai-wrap .detail-media .badge {
  position:absolute;
  top:14px;
  left:14px;
  font-size: var(--fz-xxs);
  padding: 4px 10px;
  border-radius: 999px;
  background: rgb(0, 0, 0, 0.65);
  color: #fff;
  border: 1px solid  rgb(255, 255, 255, 0.35);
}

.biz-ai-wrap .detail-panel {
  border: 1px solid var(--c-border-light);
  background: var(--c-bg-card);
  padding: 25px;
  position: sticky;
  top: 18px;
}

.biz-ai-wrap .detail-panel-top {
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:10px;
}

.biz-ai-wrap .detail-cats {
  font-size: var(--fz-xxs);
  color: var(--c-text-meta);
}

.biz-ai-wrap .detail-title {
  margin-top: 8px;
  font-size: 24px;
  line-height: 1.35;
  font-weight: 800;
  word-break: keep-all;
  width: 100%;
}

.biz-ai-wrap .share-btn {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  border: 1px solid var(--c-border);
  background: var(--c-white);
  cursor:pointer;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex: 0 0 auto;
}

.biz-ai-wrap .share-btn svg { width:18px; height:18px; }

.biz-ai-wrap .detail-kv {
  margin-top: 14px;
  border-top: 1px solid var(--c-border-light);
  padding-top: 14px;
  display:grid;
  gap:8px;
}

.biz-ai-wrap .kv-row {
  display:flex;
  justify-content:space-between;
  gap:12px;
  font-size: var(--fz-sm);
}

.biz-ai-wrap .kv-row .k {
  color: var(--c-text-meta);
  min-width: 70px;
}

.biz-ai-wrap .kv-row .v {
  text-align:right;
  color: var(--c-text-main);
}

.biz-ai-wrap .price-row { align-items: baseline; }

.biz-ai-wrap .price-row .v {
  display:flex;
  justify-content:flex-end;
  align-items:baseline;
  gap: 8px;
  font-weight: 700;
}

.biz-ai-wrap .price-row .orig {
  text-decoration: line-through;
  color: var(--c-text-muted);
  font-size: var(--fz-xs);
  font-weight: 500;
}

.biz-ai-wrap .price-row .sale {
  font-size: 22px;
  color: var(--c-text-main);
}

.biz-ai-wrap .apply-btn {
  margin-top: 14px;
  width: 100%;
  border: 0;
  border-radius: 30px;
  padding: 13px 14px;
  font-size: var(--fz-md);
  cursor:pointer;
  background: var(--c-primary);
  color: var(--c-white);
}

/* 상세 탭 */
.biz-ai-wrap .detail-tabs {
  margin-top: 18px;
  border-bottom: 1px solid var(--c-border-light);
  display:flex;
  gap:18px;
  align-items:center;
  padding: 0 2px;
  position: sticky;
  top: 0;
  background: var(--c-white);
  z-index: 20;
}

.biz-ai-wrap .detail-tab {
  border: 0;
  background: transparent;
  color: var(--c-tab-text);
  font-size: var(--fz-lg);
  padding: 14px 6px 12px;
  cursor:pointer;
  position:relative;
}

.biz-ai-wrap .detail-tab.is-active {
  color: var(--c-text-main);
  font-weight: 600;
}

.biz-ai-wrap .detail-tab.is-active::after {
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:3px;
  background: var(--c-primary);
  border-radius: 99px;
}

/* 상세 섹션 */
.biz-ai-wrap .detail-section {
  padding: 50px 25px 0 25px;
}

.biz-ai-wrap .section-head {
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom: 15px;
}

.biz-ai-wrap .section-title {
  font-size: 20px;
  font-weight: normal;
}

/* 텍스트 */
.biz-ai-wrap .muted,
.biz-ai-wrap .biz-ai-muted {
  color: var(--c-tab-text);
  font-size: var(--fz-md);
  line-height: 1.65;
  word-break: keep-all;
}

.biz-ai-wrap .biz-ai-card {
  border: 1px solid var(--c-border-light);
  background: var(--c-white);
  border-radius: var(--radius-md);
  padding: 30px;
}

.biz-ai-wrap .biz-ai-card-table {
  border: 1px solid var(--c-border-light);
  background: var(--c-white);
  border-radius: var(--radius-md);
}

.biz-ai-wrap .biz-ai-grid-3 {
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.biz-ai-wrap .biz-ai-pill {
  background: #fafafa;
  border: 1px solid var(--c-border-light);
  border-radius: 10px;
  padding: 20px;
  font-size: var(--fz-sm);
  line-height: 1.65;
  text-align:center;
  word-break: keep-all;
}

.biz-ai-wrap .biz-ai-goal-list {
  display:grid;
  gap: 10px;
  margin-top: 10px;
}

.biz-ai-wrap .biz-ai-goal-item {
  border: 1px solid #fee7d3;
  border-radius: 10px;
  background: #fff7f0;
  padding: 12px 20px;
  font-size: var(--fz-sm);
  line-height: 1.45;
  word-break: keep-all;
}

.biz-ai-wrap .biz-ai-highlight-box {
  display:grid;
  gap:10px;
  margin-top: 10px;
}

.biz-ai-wrap .biz-ai-highlight-item {
  border-radius: 10px;
  border: 1px solid var(--c-border-light);
  background: #fbfbfb;
  padding: 20px;
  font-size: var(--fz-sm);
  line-height: 1.55;
  word-break: keep-all;
}

.biz-ai-wrap .biz-ai-tag {
  display:inline-block;
  font-size: var(--fz-sm);
  font-weight: 900;
  color: var(--c-primary);
  margin-bottom: 6px;
}

.biz-ai-wrap .biz-ai-project-preview {
  margin-top: 10px;
  border-radius: var(--radius-lg);
  overflow:hidden;
  border: 1px solid var(--c-border-light);
  background: var(--c-bg-thumb);
  min-height: 480px;
  display:flex;
  align-items:center;
  justify-content:center;
  color: var(--c-text-muted);
  font-size: var(--fz-sm);
}

.biz-ai-wrap .biz-ai-instructor {
  display:grid;
  grid-template-columns: 0.4fr 1fr;
  gap: 50px;
  align-items: start;
}

.biz-ai-wrap .biz-ai-avatar {
  border: 1px solid var(--c-border-light);
  overflow:hidden;
  background: var(--c-bg-thumb);
  height: 170px;
  display:flex;
  align-items:center;
  justify-content:center;
  color: var(--c-text-muted);
  font-size: var(--fz-sm);
}

.biz-ai-wrap .biz-ai-instructor-name {
  margin-top: 15px;
  font-size: var(--fz-md);
  font-weight: 900;
}

.biz-ai-wrap .biz-ai-instructor-role {
  font-size: var(--fz-xs);
  color: var(--c-text-meta);
  margin-top: 3px;
}

.biz-ai-wrap .biz-ai-bullet {
  margin-top: 20px;
  padding: 20px 10px;
  color: var(--c-text-meta);
  font-size: var(--fz-sm);
  line-height: 1.65;
  border-top: 1px solid var(--c-bg-card);
}

.biz-ai-wrap .biz-ai-bullet li { margin: 2px 0; }
.biz-ai-wrap .biz-ai-bullet li::before { content:'-'; margin-right:5px; }

/* 테이블 */
.biz-ai-wrap table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fz-sm);
}

.biz-ai-wrap thead th {
  padding: 15px 30px;
  border-top: 1px solid var(--c-border-light);
  border-bottom: 1px solid var(--c-border-light);
  color: var(--c-black);
  font-weight: 700;
  font-size: var(--fz-md);
  text-align:left;
  background:#fbfbfb;
  border-radius: var(--radius-md);
}

.biz-ai-wrap thead:first-child th {
  border-top:0;
}

.biz-ai-wrap tbody td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--c-border-light);
  vertical-align: top;
  text-align: center;
  word-break: keep-all;
}

.biz-ai-wrap tbody tr:last-child td {
  border:0;
}

.biz-ai-wrap .biz-ai-notice {
  margin-top: 16px;
  border-radius: var(--radius-lg);
  padding: 18px 18px;
}

.biz-ai-wrap .biz-ai-notice h4 {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 10px;
}

.n-item:first-child {
  margin-top:0;
}

.n-item {
  margin-top: 10px;
  border-top: 1px solid rgba(255,255,255,0.12);
  font-size: var(--fz-sm);
  line-height: 1.7;
  opacity: 0.95;
  color: var(--c-tab-text);
}

.n-item b {
  display:block;
  margin-bottom: 4px;
  font-size: var(--fz-sm);
}

/* ==========================================================================
   Responsive + Reduced motion (Scoped)
   ========================================================================== */

@media (max-width: 1024px) {
  .biz-ai-wrap .biz-ai-grid { grid-template-columns: repeat(2, 1fr); }
  .biz-ai-wrap .detail-top { grid-template-columns: 1fr; }
  .biz-ai-wrap .detail-panel { position: relative; top: 0; }
  .biz-ai-wrap .biz-ai-grid-3 { grid-template-columns: 1fr; }
  .biz-ai-wrap .biz-ai-instructor { grid-template-columns: 1fr; }
  .biz-ai-wrap .biz-ai-avatar { height: 200px; }
}

@media (max-width: 768px) {
  .biz-ai-wrap {
    margin: 24px auto 40px;
    padding: 0 16px;
  }

  .biz-ai-wrap .biz-ai-header,
  .biz-ai-wrap .biz-ai-list-wrap {
    padding-left: 16px;
    padding-right: 16px;
  }

  .biz-ai-wrap .biz-ai-header {
    flex-direction: column;
    gap: 10px;
  }

  .biz-ai-wrap .biz-ai-grid { grid-template-columns: 1fr; }

  .biz-ai-wrap .particle {
    opacity: 0.3;
    transform: scale(0.8);
  }

  .biz-ai-wrap .biz-ai-title-box { display:block; }
  .biz-ai-wrap .detail-tabs { top: 0; }

  .biz-ai-wrap .detail-section {
    padding: 30px 10px;
  }
  .biz-ai-wrap .biz-ai-project-preview {
    min-height: unset;
  }
  .biz-ai-wrap .biz-ai-card {
    padding:15px;
  }
  .biz-ai-wrap .biz-ai-instructor {
    gap:20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .biz-ai-wrap * {
    animation: none !important;
    transition: none !important;
  }
}

/* =============================
   PLAYER PAGE
============================= */
.biz-ai-player-topbar{
  margin-top:30px;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border-light);
  padding: 25px;
  display:flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  border-radius: 0;
}

.biz-ai-player-cats{
  font-size: var(--fz-xxs);
  color: var(--c-text-meta);
  margin-top:10px;
}

.biz-ai-player-course-title{
  margin-top: 6px;
  font-size: 24px;
  font-weight: 900;
  line-height: 1.35;
  word-break: keep-all;
}

.biz-ai-player-back{
  flex: 0 0 auto;
  height: 36px;
  padding: 0 12px;
  display:inline-flex;
  align-items:center;
  border-radius: 999px;
  border: 1px solid var(--c-border);
  background: var(--c-white);
  color: var(--c-text-main);
  text-decoration: none;
  font-size: var(--fz-sm);
}

.biz-ai-player-video{
  margin-top: 14px;
  border: 1px solid var(--c-border-light);
  background: #000;
  overflow: hidden;
  margin:30px 0;
}

.biz-ai-player-video-el{
  width: 100%;
  display:block;
  aspect-ratio: 16 / 9;
  background:#000;
}

/* ===== Player Curriculum (simple) ===== */
.biz-ai-wrap.biz-ai-player .biz-ai-player-curr {
  margin-top: 18px;
}

.biz-ai-player-chapter {
  border-bottom: 1px solid var(--c-border-light);
}
.biz-ai-player-chapter:last-child {
  border:0;
}

.biz-ai-wrap.biz-ai-player .biz-ai-player-chapter-head {
  width: 100%;
  border: 0;
  background: transparent;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.biz-ai-wrap.biz-ai-player .biz-ai-player-chapter-title {
  font-weight: 800;
  color: var(--c-text-main);
  text-align: left;
  word-break: keep-all;
  font-size: var(--fz-md);
}

.biz-ai-wrap.biz-ai-player .biz-ai-player-chapter-ic {
  width: 10px; height: 10px;
  border-right: 2px solid var(--c-text-muted);
  border-bottom: 2px solid var(--c-text-muted);
  transform: rotate(45deg);
  flex: 0 0 auto;
}

.biz-ai-wrap.biz-ai-player .biz-ai-player-chapter.is-open .biz-ai-player-chapter-ic {
  transform: rotate(-135deg);
}

/* 접힘/펼침 */
.biz-ai-wrap.biz-ai-player .biz-ai-player-chapter-body {
  display: none;
}
.biz-ai-wrap.biz-ai-player .biz-ai-player-chapter.is-open .biz-ai-player-chapter-body {
  display: block;
}

.biz-ai-wrap.biz-ai-player .biz-ai-player-lesson {
  cursor: pointer;
  border-top: 1px solid var(--c-border-light);
}
.biz-ai-wrap.biz-ai-player .biz-ai-player-lesson:hover td {
  background: #fafafa;
}

/* 현재 재생중 강조 */
.biz-ai-wrap.biz-ai-player .biz-ai-player-lesson.is-playing td {
  background: #fff7f0;
  color: var(--c-primary);
}