/* Masonry Grid Layout */
.masonry-grid { width: 100%; columns: auto 300px; column-gap: 1.5rem; }

/* Memo Card Styling */
.memo-card {
    break-inside: avoid; margin-bottom: 1.5rem; background: rgba(30, 41, 59, 0.6);
    border-radius: 12px; padding: 1.2rem 1.2rem 45px 1.2rem; border: 1px solid rgba(255,255,255,0.05);
    position: relative; transition: transform 0.2s, background 0.2s;
    max-height: 320px; overflow: hidden;
}

.memo-card:hover { transform: translateY(-4px); background: rgba(30, 41, 59, 1); }

.memo-card.compact { max-height: 80px; background: rgba(30, 41, 59, 0.3); border: 1px dashed rgba(255,255,255,0.1); }
.memo-card.compact .memo-content, 
.memo-card.compact .memo-ai-summary, 
.memo-card.compact .memo-backlinks { display: none; }
.memo-card.compact .memo-title { font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 0px; margin-right: 50px; }
.memo-card.compact::after { display: none; }

.memo-card.encrypted {
    border: 1px solid var(--encrypted-border) !important;
    box-shadow: 0 0 15px rgba(0, 243, 255, 0.15), inset 0 0 5px rgba(0, 243, 255, 0.05);
}

/* Fade-out for long content */
.memo-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; width: 100%; height: 60px;
    background: linear-gradient(transparent, rgba(15, 23, 42, 0.8));
    pointer-events: none;
    border-radius: 0 0 12px 12px;
}

/* Memo Content Elements */
.memo-title { font-weight: 600; font-size: 1.0rem; margin-bottom: 0.5rem; }
.memo-content { font-size: 0.9rem; color: #cbd5e1; line-height: 1.6; }
.memo-content img { max-width: 100%; border-radius: 8px; margin-top: 5px; }

.memo-summary, .memo-ai-summary {
    font-size: 0.8rem; 
    font-style: italic; 
    color: var(--ai-accent); 
    border-left: 2px solid var(--ai-accent);
    padding-left: 10px; 
    margin-bottom: 15px; 
    line-height: 1.5;
    opacity: 0.9;
}

.memo-summary strong {
    color: var(--ai-accent);
    font-weight: 800;
    text-transform: uppercase;
    margin-right: 5px;
}

/* Meta & Badges */
.memo-meta { margin-bottom: 12px; display: flex; flex-wrap: wrap; gap: 5px; }
.tag-badge { padding: 2px 8px; border-radius: 12px; font-size: 0.75rem; font-weight: bold; }
.tag-user { background: rgba(56, 189, 248, 0.2); color: var(--accent); }
.tag-ai { background: rgba(139, 92, 246, 0.2); color: #c084fc; border: 1px solid rgba(139, 92, 246, 0.3); }
.group-badge { background: rgba(255,255,255,0.05); color: #cbd5e1; padding: 2px 8px; border-radius: 12px; font-size: 0.75rem; font-weight: bold; }

/* Links & Actions */
.memo-backlinks { margin-top: 12px; padding-top: 8px; border-top: 1px solid rgba(255,255,255,0.05); font-size: 0.8rem; color: var(--muted); }
.link-item, .internal-link, .memo-content a { 
    color: #fbbf24; /* 고대비 Amber 색상 */
    cursor: pointer; 
    text-decoration: none; 
    font-weight: 600; 
    transition: color 0.2s, opacity 0.2s;
}

.link-item:hover, .internal-link:hover, .memo-content a:hover { 
    color: #f59e0b;
    text-decoration: underline; 
}

.memo-actions { position: absolute; bottom: 10px; right: 10px; opacity: 0; transition: opacity 0.2s; display: flex; gap: 5px; }
.memo-card:hover .memo-actions { opacity: 1; }

/* Attachments */
.memo-attachments {
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.05);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.file-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 0.8rem;
    color: #cbd5e1;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.file-chip:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--accent);
    color: white;
    transform: translateY(-1px);
}

/* Checkbox Visibility Enhancement */
.memo-content input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 1.15rem;
    height: 1.15rem;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 4px;
    background: rgba(30, 41, 59, 0.5);
    cursor: pointer;
    position: relative;
    vertical-align: middle;
    margin-right: 8px;
    margin-top: -2px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.memo-content input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(56, 189, 248, 0.4);
}

.memo-content input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    font-family: Arial, sans-serif;
    transform: translate(-50%, -50%);
    color: #0f172a;
    font-size: 0.85rem;
    font-weight: 900;
}

.memo-content input[type="checkbox"]:hover {
    border-color: var(--accent);
    background: rgba(56, 189, 248, 0.15);
}

/* 완료된 리스트 항목 스타일 */
.memo-content li:has(input[type="checkbox"]:checked) {
    color: var(--muted);
    text-decoration: line-through;
    opacity: 0.7;
}

.memo-content ul {
    list-style-type: none;
    padding-left: 5px;
}

.copy-id-btn:hover {
    color: var(--accent) !important;
    text-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
    transform: scale(1.1);
}

/* 💡 시각적 연결 모드 스타일 */
body.linker-active {
    cursor: crosshair;
}

body.linker-active .copy-id-btn {
    color: var(--accent) !important;
    animation: pulse-border 1.5s infinite;
    opacity: 1 !important;
}

@keyframes pulse-border {
    0% { transform: scale(1); text-shadow: 0 0 0px var(--accent); }
    50% { transform: scale(1.2); text-shadow: 0 0 10px var(--accent); }
    100% { transform: scale(1); text-shadow: 0 0 0px var(--accent); }
}