@import url('https://fonts.googleapis.com/css2?family=Noto+Color+Emoji&family=Noto+Sans+KR:wght@400;500;600;700;800&display=swap');
:root {
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --danger: #ef4444;
  --danger-hover: #dc2626;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
button, input, select, textarea { font-family: inherit; }
body { font-family: "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif, "Noto Color Emoji"; background: var(--bg); color: var(--text); line-height: 1.6; }

.header-container { background: #ffffff; border-bottom: 1px solid var(--border); padding: 20px 20px 0; position: relative; }
.site-title { font-size: 2rem; font-weight: 800; color: #1e293b; text-align: center; }
.site-title a { color: inherit; text-decoration: none; }
.site-sub { font-size: 0.92rem; color: var(--muted); text-align: center; margin-bottom: 16px; }

.visitor-badge {
  position: absolute; top: 18px; right: 20px;
  background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af;
  padding: 6px 14px; border-radius: 20px; font-size: 0.82rem; font-weight: 600;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05); display: flex; gap: 10px;
}
.visitor-badge span b { color: var(--primary); }

.nav-tabs-wrapper { overflow-x: auto; white-space: nowrap; text-align: center; }
.nav-tabs { display: inline-flex; gap: 0; }
.nav-btn {
  display: inline-block; padding: 12px 16px; font-size: 0.93rem; font-weight: 600;
  color: var(--muted); background: none; border: none; border-bottom: 3px solid transparent;
  cursor: pointer; transition: 0.2s; text-decoration: none;
}
.nav-btn:hover { color: var(--primary); }
@media (min-width: 900px) {
  .nav-tabs-wrapper { overflow-x: visible; white-space: normal; }
  .nav-tabs { display: flex; flex-wrap: wrap; justify-content: center; }
}
.nav-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

.main-container { max-width: 900px; margin: 26px auto; padding: 0 16px 40px; }
.card { background: var(--card-bg); border-radius: 12px; padding: 30px; border: 1px solid var(--border); box-shadow: 0 4px 6px -1px rgba(0,0,0,0.04); }

.panel-title { font-size: 1.35rem; font-weight: 700; margin-bottom: 6px; color: #1e293b; }
.panel-desc { font-size: 0.9rem; color: var(--muted); margin-bottom: 20px; }

.drop-zone {
  border: 2px dashed #94a3b8; border-radius: 12px; padding: 36px 20px;
  text-align: center; cursor: pointer; transition: all 0.2s ease;
  background: #fdfdfd; margin-bottom: 16px; position: relative;
}
.drop-zone:hover, .drop-zone.dragover { border-color: var(--primary); background: #eff6ff; }
.drop-icon { font-family: "Noto Color Emoji", sans-serif; font-size: 2.2rem; margin-bottom: 8px; display: block; }
.drop-main-text { font-size: 1.05rem; font-weight: 700; color: #1e293b; margin-bottom: 6px; }
.drop-sub-text { font-size: 0.85rem; color: var(--muted); }
.browse-btn {
  display: inline-block; margin-top: 12px; background: #ffffff; color: var(--primary);
  border: 1px solid #bfdbfe; padding: 6px 16px; border-radius: 6px; font-size: 0.85rem;
  font-weight: 600; pointer-events: none;
}
input[type="file"] { display: none; }

.btn { font-family: inherit; display: block; width: 100%; background: var(--primary); color: white; border: none; padding: 12px; border-radius: 8px; font-size: 0.98rem; font-weight: 600; cursor: pointer; transition: 0.2s; text-align: center; }
.btn:hover { background: var(--primary-hover); }
.btn:disabled { background: #94a3b8; cursor: not-allowed; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.9rem; }
.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="range"] { width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.95rem; }

.img-preview-box { display: flex; gap: 16px; align-items: center; background: #f8fafc; border: 1px solid var(--border); padding: 12px; border-radius: 8px; margin-bottom: 16px; }
.img-thumb-mini { width: 90px; height: 90px; object-fit: contain; border-radius: 6px; border: 1px solid #cbd5e1; background: #fff; }

.pdf-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 14px; margin: 18px 0; max-height: 480px; overflow-y: auto; padding: 10px; background: #f1f5f9; border-radius: 8px; border: 1px solid var(--border); }
.pdf-page-card { position: relative; background: #ffffff; border-radius: 6px; border: 2px solid #cbd5e1; padding: 6px; text-align: center; cursor: grab; user-select: none; transition: transform 0.15s, border-color 0.15s; }
.pdf-page-card:active { cursor: grabbing; }
.pdf-page-card.dragging { opacity: 0.35; border-color: var(--primary); transform: scale(0.95); }
.pdf-page-card.drag-over { border: 2px dashed var(--primary); background: #eff6ff; }
.pdf-page-card canvas { width: 100%; height: auto; display: block; border-radius: 4px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); margin-top: 2px; }

.card-top-bar { display: flex; justify-content: space-between; align-items: center; position: absolute; top: 10px; left: 10px; right: 10px; z-index: 2; }
.page-badge { background: rgba(15,23,42,0.85); color: #fff; font-size: 0.75rem; font-weight: 700; padding: 2px 7px; border-radius: 12px; }
.card-delete-btn {
  background: var(--danger); color: white; border: none; width: 22px; height: 22px; border-radius: 50%;
  font-size: 0.75rem; font-weight: bold; cursor: pointer; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.25); transition: background 0.2s, transform 0.1s;
}
.card-delete-btn:hover { background: var(--danger-hover); transform: scale(1.1); }
.card-delete-btn:active { transform: scale(0.95); }

.source-tag { font-size: 0.72rem; color: var(--muted); margin-top: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-status { margin-top: 10px; font-size: 0.88rem; color: var(--muted); }
.alert-box { background: #eff6ff; border-left: 4px solid var(--primary); padding: 12px; font-size: 0.88rem; color: #1e40af; border-radius: 4px; margin-bottom: 16px; }
.preview-box { margin-top: 20px; overflow-x: auto; max-height: 250px; border: 1px solid var(--border); border-radius: 6px; display: none; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th, td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; }
th { background: #f1f5f9; }

.doc-content h2 { font-size: 1.35rem; margin: 26px 0 12px; color: #0f172a; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.doc-content h3 { font-size: 1.1rem; margin: 18px 0 8px; color: #1e293b; }
.doc-content p { font-size: 0.95rem; color: #475569; margin-bottom: 10px; line-height: 1.7; }
.doc-content li { font-size: 0.95rem; color: #475569; margin-bottom: 6px; }
.doc-content ul { padding-left: 20px; margin-bottom: 16px; }
.doc-content ol { padding-left: 20px; margin-bottom: 16px; }
.doc-content a { color: var(--primary); text-decoration: none; font-weight: 500; }
.doc-content a:hover { text-decoration: underline; }

/* GIF 프레임 그리드 */
.frame-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 12px; margin: 18px 0; max-height: 400px; overflow-y: auto;
  padding: 10px; background: #f1f5f9; border-radius: 8px; border: 1px solid var(--border);
}
.frame-card {
  position: relative; background: #ffffff; border-radius: 6px; border: 2px solid #cbd5e1;
  padding: 6px; text-align: center; cursor: grab; user-select: none;
  transition: transform 0.15s, border-color 0.15s;
}
.frame-card:active { cursor: grabbing; }
.frame-card.dragging { opacity: 0.35; border-color: var(--primary); transform: scale(0.95); }
.frame-card.drag-over { border: 2px dashed var(--primary); background: #eff6ff; }
.frame-card img { width: 100%; height: 90px; object-fit: cover; display: block; border-radius: 4px; margin-top: 2px; }

.options-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin: 16px 0; }

/* 허브 페이지 도구 카드 그리드 */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; margin-top: 10px; }
.tool-card {
  display: block; background: var(--card-bg); border-radius: 12px; padding: 24px 20px;
  border: 1px solid var(--border); box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  text-decoration: none; color: var(--text); transition: all 0.2s;
}
.tool-card:hover { border-color: var(--primary); box-shadow: 0 4px 14px rgba(37,99,235,0.12); transform: translateY(-2px); }
.tool-card-icon { font-family: "Noto Color Emoji", sans-serif; font-size: 2rem; margin-bottom: 10px; }
.tool-card h2 { font-size: 1rem; font-weight: 700; color: #1e293b; margin-bottom: 6px; }
.tool-card p { font-size: 0.85rem; color: var(--muted); line-height: 1.5; }

footer { text-align: center; margin-top: 30px; padding: 24px 0; color: #94a3b8; font-size: 0.85rem; border-top: 1px solid var(--border); }
footer a { color: var(--muted); text-decoration: none; margin: 0 8px; }
footer a:hover { text-decoration: underline; color: var(--primary); }

@media (max-width: 680px) {
  .title-rest { display: block; }
  .visitor-badge { position: static; margin: 0 auto 12px; justify-content: center; width: fit-content; }
}

.blog-content { margin-top: 20px; }
.blog-content:empty { display: none; }
.blog-content img { display: block; width: 100%; max-width: 480px; height: auto; margin: 0 auto 20px; border-radius: 10px; }
.blog-content img.wide { max-width: 100%; }

.lang-switch { position: absolute; top: 18px; left: 20px; padding: 5px 8px; border: 1px solid var(--border); border-radius: 8px; background: #fff; color: var(--text); font-size: 0.82rem; cursor: pointer; }
@media (max-width: 600px) { .lang-switch { top: 8px; left: 8px; font-size: 0.78rem; padding: 3px 5px; } }