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ease}.v4-ref-tab:hover{color:var(--v4-text-secondary)}.v4-ref-tab.active{color:var(--v4-primary);background:var(--v4-primary-subtle);border-color:var(--v4-border-dim)}.v4-reference-body{padding:var(--v4-space-4)}.v4-ref-content{display:none}.v4-ref-content.active{display:block}.v4-ref-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:var(--v4-space-2)}.v4-ref-grid.v4-ref-prosigns{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.v4-ref-item{display:flex;flex-direction:column;align-items:center;padding:var(--v4-space-2);background:var(--v4-bg-surface);border:1px solid var(--v4-border-dim);border-radius:var(--v4-radius-md);cursor:pointer;transition:all .15s 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ease}.v4-settings-panel.active{transform:translate(0)}.v4-settings-header{display:flex;align-items:center;justify-content:space-between;padding:var(--v4-space-4) var(--v4-space-6);border-bottom:1px solid var(--v4-border-dim)}.v4-settings-title{display:flex;align-items:center;gap:var(--v4-space-2);font-family:var(--v4-font-display);font-size:var(--v4-text-md);font-weight:700;letter-spacing:var(--v4-tracking-wider);color:var(--v4-primary);text-shadow:var(--v4-glow-text)}.v4-settings-title svg{width:20px;height:20px}.v4-settings-close{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;color:var(--v4-text-muted);background:transparent;border:1px solid var(--v4-border-dim);border-radius:var(--v4-radius-md);cursor:pointer;transition:all .15s ease}.v4-settings-close svg{width:18px;height:18px}.v4-settings-close:hover{color:var(--v4-primary);border-color:var(--v4-border-base)}.v4-settings-body{flex:1;padding:var(--v4-space-4) 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var(--v4-space-3);color:var(--v4-text-primary);font-family:var(--v4-font-mono);font-size:var(--v4-text-sm);background:var(--v4-bg-surface);border:1px solid var(--v4-border-dim);border-radius:var(--v4-radius-md);outline:none;transition:border-color .15s ease}.v4-input:hover,.v4-input:focus{border-color:var(--v4-border-base)}.v4-input-char{width:50px;text-align:center}.v4-toggle{position:relative;display:inline-block;cursor:pointer}.v4-toggle input{position:absolute;opacity:0;width:0;height:0}.v4-toggle-track{display:block;width:44px;height:24px;background:var(--v4-bg-surface);border:1px solid var(--v4-border-dim);border-radius:var(--v4-radius-full);transition:all .2s ease}.v4-toggle-track:after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;background:var(--v4-text-muted);border-radius:50%;transition:all .2s ease}.v4-toggle input:checked+.v4-toggle-track{background:var(--v4-primary-subtle);border-color:var(--v4-border-base)}.v4-toggle input:checked+.v4-toggle-track:after{transform:translate(20px);background:var(--v4-primary)}.v4-settings-footer{display:flex;gap:var(--v4-space-3);padding:var(--v4-space-4) var(--v4-space-6);border-top:1px solid var(--v4-border-dim)}.v4-settings-footer .v4-btn{flex:1}.v4-flash-overlay{position:fixed;inset:0;z-index:9999;background:var(--v4-primary);opacity:0;pointer-events:none;transition:opacity .05s ease}.v4-flash-overlay.active{opacity:1}.v4-toast-container{position:fixed;bottom:var(--v4-space-6);right:var(--v4-space-6);z-index:1000;display:flex;flex-direction:column;gap:var(--v4-space-2)}.v4-toast{display:flex;align-items:center;gap:var(--v4-space-3);padding:var(--v4-space-3) var(--v4-space-4);background:var(--v4-bg-panel);border:1px solid var(--v4-border-base);border-radius:var(--v4-radius-md);box-shadow:var(--v4-glow-primary);animation:toast-in .3s ease}.v4-toast-success{border-color:var(--v4-accent-green)}.v4-toast-error{border-color:var(--v4-accent-red)}@keyframes toast-in{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.v4-toast-text{font-family:var(--v4-font-mono);font-size:var(--v4-text-sm);color:var(--v4-text-primary)}.v4-changelog-overlay{position:fixed;inset:0;z-index:299;background:#0009;backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:all .3s ease}.v4-changelog-overlay.active{opacity:1;visibility:visible}.v4-changelog-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.95);z-index:300;width:92%;max-width:540px;max-height:80vh;display:flex;flex-direction:column;background:var(--v4-bg-darker);border:1px solid var(--v4-border-dim);border-radius:var(--v4-radius-lg);box-shadow:0 24px 48px #0006;opacity:0;visibility:hidden;transition:all .3s ease}.v4-changelog-modal.active{opacity:1;visibility:visible;transform:translate(-50%,-50%) scale(1)}.v4-changelog-header{display:flex;align-items:center;justify-content:space-between;padding:var(--v4-space-4) var(--v4-space-6);border-bottom:1px solid var(--v4-border-dim);flex-shrink:0}.v4-changelog-title{display:flex;align-items:center;gap:var(--v4-space-2);font-family:var(--v4-font-display);font-size:var(--v4-text-sm);font-weight:700;letter-spacing:.15em;color:var(--v4-primary);margin:0}.v4-changelog-close{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;color:var(--v4-text-muted);background:transparent;border:1px solid transparent;border-radius:var(--v4-radius-sm);cursor:pointer;transition:all .2s}.v4-changelog-close svg{width:18px;height:18px}.v4-changelog-close:hover{color:var(--v4-primary);border-color:var(--v4-border-base)}.v4-changelog-body{flex:1;padding:var(--v4-space-4) var(--v4-space-6);overflow-y:auto}.v4-changelog-entry{padding-bottom:var(--v4-space-5);margin-bottom:var(--v4-space-5);border-bottom:1px solid var(--v4-border-dim)}.v4-changelog-entry:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.v4-changelog-latest .v4-changelog-version-tag{background:var(--v4-primary);color:var(--v4-bg-darkest)}.v4-changelog-entry-header{display:flex;align-items:center;gap:var(--v4-space-3);margin-bottom:var(--v4-space-3)}.v4-changelog-version-tag{font-family:var(--v4-font-mono);font-size:11px;font-weight:600;padding:2px 8px;border-radius:var(--v4-radius-sm);background:var(--v4-bg-elevated);color:var(--v4-text-secondary);letter-spacing:.04em}.v4-changelog-date{font-family:var(--v4-font-mono);font-size:var(--v4-text-xs);color:var(--v4-text-muted)}.v4-changelog-list{margin:0;padding-left:var(--v4-space-5);list-style:disc}.v4-changelog-list li{font-family:var(--v4-font-body);font-size:var(--v4-text-sm);line-height:1.6;color:var(--v4-text-secondary);margin-bottom:var(--v4-space-1)}.v4-changelog-list li:last-child{margin-bottom:0}@media(max-width:480px){.v4-changelog-modal{width:96%;max-height:85vh}.v4-changelog-header,.v4-changelog-body{padding:var(--v4-space-3) var(--v4-space-4)}}