body{line-height:1.6}:root{--val-accent: #d14d6a;--val-accent-hover: #b8405a;--val-accent-light: rgba(209, 77, 106, .1)}body.dark-mode{--val-accent: #e8587a;--val-accent-hover: #d14467;--val-accent-light: rgba(232, 88, 122, .15)}.valentine-container{display:grid;grid-template-columns:320px 1fr;gap:var(--spacing-lg);max-width:75rem;margin:auto;padding:var(--spacing-lg);min-height:70vh;color:var(--text-secondary)}.shipgirl-panel{background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-color);overflow:hidden;display:flex;flex-direction:column;max-height:calc(100vh - 250px)}.search-box{padding:var(--spacing-md);background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.search-box input{width:100%;padding:var(--spacing-sm) var(--spacing-md);border:2px solid var(--border-color);border-radius:var(--radius-md);background-color:var(--card-bg);color:var(--text-primary);font-size:1rem;transition:all var(--transition-fast);box-sizing:border-box;outline:none}body.dark-mode .search-box input{background-color:var(--bg-input)}.search-box input::placeholder{color:var(--text-dim)}.search-box input:focus{border-color:var(--val-accent);box-shadow:0 0 0 3px var(--val-accent-light)}.shipgirl-count{display:flex;justify-content:flex-end;padding:var(--spacing-xs) var(--spacing-md);font-size:.875rem;color:var(--text-muted);background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.shipgirl-list{flex:1;overflow-y:auto;padding:var(--spacing-sm);display:flex;flex-direction:column;gap:2px}.shipgirl-item{display:flex;align-items:center;gap:var(--spacing-sm);width:100%;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);border:2px solid transparent;background:transparent;text-align:left;font:inherit}.shipgirl-item:hover,.shipgirl-item:focus-visible{background:var(--section-bg);border-color:var(--primary-color);transform:translate(4px);outline:none}.shipgirl-item.active{background:#d14d6a14;border-color:var(--val-accent)}body.dark-mode .shipgirl-item:hover,body.dark-mode .shipgirl-item:focus-visible{background:var(--bg-input)}body.dark-mode .shipgirl-item.active{background:var(--val-accent-light)}.shipgirl-item-icon{width:36px;height:36px;border-radius:50%;object-fit:cover;background:var(--bg-tertiary);flex-shrink:0}.shipgirl-item-placeholder{width:36px;height:36px;border-radius:50%;background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:600;color:var(--text-dim);flex-shrink:0}.shipgirl-item-name{min-width:0;font-size:.9375rem;font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.3}.letter-panel{background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-color);overflow:hidden;display:flex;flex-direction:column;min-width:0}.letter-header{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md) var(--spacing-lg);background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.letter-header-icon{width:48px;height:48px;border-radius:50%;object-fit:cover;background:var(--bg-elevated);flex-shrink:0;border:2px solid var(--border-color)}.letter-header-placeholder{width:48px;height:48px;border-radius:50%;background:var(--bg-elevated);display:flex;align-items:center;justify-content:center;font-size:1.25rem;color:var(--text-dim);flex-shrink:0;border:2px solid var(--border-color)}.letter-header-name{min-width:0;font-size:1.25rem;font-weight:600;color:var(--text-primary);overflow-wrap:anywhere}.year-tabs{display:flex;flex-wrap:wrap;gap:var(--spacing-xs);padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-secondary);border-bottom:1px solid var(--border-color)}.year-tab{padding:.5rem 1rem;border-radius:var(--radius-sm);border:none;background:var(--bg-elevated);color:var(--text-muted);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.year-tab:hover,.year-tab:focus-visible{color:var(--text-primary);background:var(--bg-input);outline:2px solid var(--val-accent);outline-offset:2px}.year-tab.active{background:var(--val-accent);color:#fff}.letter-content-wrapper{flex:1;overflow-y:auto;padding:var(--spacing-lg);background:var(--section-bg)}body.dark-mode .letter-content-wrapper{background:var(--bg-tertiary)}.letter-card{background:var(--card-bg);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);box-shadow:var(--shadow-md);position:relative;max-width:640px;margin:0 auto}body.dark-mode .letter-card{background:var(--bg-secondary)}.letter-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--val-accent),var(--primary-color));border-radius:var(--radius-lg) var(--radius-lg) 0 0}.letter-year-label{display:inline-block;font-size:.8125rem;font-weight:700;color:var(--val-accent);background:var(--val-accent-light);padding:.2rem .6rem;border-radius:var(--radius-sm);margin-bottom:var(--spacing-md);letter-spacing:.03em}.letter-text{line-height:2;font-size:.9375rem;color:var(--text-secondary);white-space:pre-wrap;word-break:keep-all;overflow-wrap:break-word}.letter-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-dim);gap:var(--spacing-md);padding:var(--spacing-xl)}.letter-empty .material-symbols-outlined{font-size:4rem;opacity:.3}.letter-empty p{font-size:1.125rem;margin:0}@media(max-width:1024px){.valentine-container{grid-template-columns:280px 1fr}}@media(max-width:768px){.valentine-container{grid-template-columns:1fr;gap:var(--spacing-md);padding:var(--spacing-sm);min-height:auto}.shipgirl-panel{max-height:300px}.letter-panel{min-height:500px}.letter-header{padding:var(--spacing-sm) var(--spacing-md)}.letter-header-icon,.letter-header-placeholder{width:40px;height:40px}.letter-header-name{font-size:1.0625rem}.year-tabs{padding:var(--spacing-xs) var(--spacing-md)}.letter-content-wrapper{padding:var(--spacing-md)}.letter-card{padding:var(--spacing-lg) var(--spacing-md) var(--spacing-md)}.letter-text{font-size:.875rem}}@media(max-width:480px){.shipgirl-item-icon,.shipgirl-item-placeholder{width:32px;height:32px}.letter-header-icon,.letter-header-placeholder{width:36px;height:36px}}