.system-prompt-selector{display:flex;flex-direction:column;gap:var(--spacing-sm)}.selector-label{display:flex;align-items:center;gap:var(--spacing-sm);font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--color-white)}.loading-indicator{font-weight:var(--font-weight-normal);color:var(--color-text-secondary);font-size:var(--font-size-xs)}.system-prompt-selector .error-message{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm);background-color:#ffc1cc26;border:1px solid rgba(255,193,204,.3);border-radius:var(--radius-md);color:var(--color-pink);font-size:var(--font-size-sm)}.retry-btn{padding:var(--spacing-xs) var(--spacing-sm);background:transparent;border:1px solid currentColor;border-radius:var(--radius-sm);color:inherit;font-size:var(--font-size-xs);cursor:pointer}.retry-btn:hover{background-color:#ffc1cc1a}.selector-content{display:flex;flex-direction:column;gap:var(--spacing-sm)}.select-wrapper{position:relative;display:flex;align-items:center}.prompt-select{width:100%;padding:var(--spacing-sm) var(--spacing-xl) var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-base);color:var(--color-white);background-color:var(--color-slate);border:1px solid var(--color-border);border-radius:var(--radius-md);appearance:none;cursor:pointer;transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out}.prompt-select:focus{outline:none;border-color:var(--color-cyan);box-shadow:0 0 0 3px #a8dadc26}.prompt-select:disabled{background-color:var(--color-surface-overlay);opacity:.6;cursor:not-allowed}.prompt-select optgroup{font-weight:var(--font-weight-semibold);color:var(--color-text-secondary);font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:.05em}.prompt-select option{font-weight:var(--font-weight-normal);color:var(--color-white);background-color:var(--color-slate)}.select-icon{position:absolute;right:var(--spacing-md);pointer-events:none;color:var(--color-text-secondary)}.custom-prompt-container{display:flex;flex-direction:column;gap:var(--spacing-sm)}.custom-prompt-textarea{width:100%;padding:var(--spacing-sm) var(--spacing-md);font-family:inherit;font-size:var(--font-size-sm);color:var(--color-white);background-color:var(--color-slate);border:1px solid var(--color-border);border-radius:var(--radius-md);resize:vertical;min-height:100px;line-height:var(--line-height-normal);transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out}.custom-prompt-textarea::placeholder{color:var(--color-text-muted)}.custom-prompt-textarea:focus{outline:none;border-color:var(--color-cyan);box-shadow:0 0 0 3px #a8dadc26}.custom-prompt-textarea:disabled{background-color:var(--color-surface-overlay);opacity:.6;cursor:not-allowed}.back-to-presets-btn{align-self:flex-start;padding:var(--spacing-xs) var(--spacing-sm);background:transparent;border:none;color:var(--color-cyan);font-size:var(--font-size-sm);cursor:pointer}.back-to-presets-btn:hover:not(:disabled){text-decoration:underline}.back-to-presets-btn:disabled{opacity:.5;cursor:not-allowed}.preset-preview{padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-surface-overlay);border-radius:var(--radius-md);border:1px solid var(--color-border)}.preview-label{margin:0 0 var(--spacing-xs) 0;font-size:var(--font-size-xs);color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.preview-content{margin:0;font-size:var(--font-size-sm);color:var(--color-text-secondary);line-height:var(--line-height-relaxed);white-space:pre-wrap;max-height:120px;overflow-y:auto}@media(max-width:768px){.custom-prompt-textarea{min-height:72px}.preset-preview{padding:var(--spacing-xs) var(--spacing-sm)}.preview-content{max-height:80px;font-size:var(--font-size-xs)}.prompt-select{font-size:var(--font-size-sm)}}.welcome-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:var(--spacing-xl)}.welcome-container.compact{align-items:stretch;justify-content:flex-start;height:auto;padding:0}.welcome-heading{font-size:32px;font-weight:var(--font-weight-normal);color:var(--color-white);letter-spacing:.02em;margin:0 0 var(--spacing-xl) 0;text-align:center}.welcome-input-wrapper{width:100%;max-width:600px;display:flex;flex-direction:column;gap:var(--spacing-md);border-radius:var(--radius-xl)}.welcome-container.compact .welcome-input-wrapper{max-width:none}.welcome-input-wrapper.drag-active{outline:2px dashed rgba(93,173,226,.8);outline-offset:2px}.hidden-file-input{display:none}.drop-hint{margin:0;align-self:center;padding:4px 10px;border-radius:999px;background:#5dade226;border:1px solid rgba(93,173,226,.4);color:var(--color-cyan);font-size:var(--font-size-xs);pointer-events:none}.welcome-input{display:flex;align-items:center;width:100%;background-color:var(--color-surface-overlay);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--spacing-sm);transition:background-color .2s ease,border-color .2s ease}.welcome-input:focus-within{background-color:var(--color-surface-overlay-hover);border-color:var(--color-border-hover)}.system-prompt-toggle{width:40px;height:40px;padding:0;background:transparent;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--color-text-secondary);transition:color .2s ease,background-color .2s ease;flex-shrink:0;border-radius:var(--radius-md)}.system-prompt-toggle:hover{color:var(--color-white);background-color:var(--color-surface-overlay-hover)}.system-prompt-toggle.active{color:var(--color-cyan);background-color:var(--color-surface-overlay-hover)}.welcome-text-input{flex:1;background:transparent;border:none;font-family:inherit;font-size:var(--font-size-base);color:var(--color-white);line-height:var(--line-height-normal);padding:var(--spacing-sm) var(--spacing-sm)}.welcome-text-input::placeholder{color:var(--color-text-muted)}.welcome-text-input:focus{outline:none}.welcome-text-input:disabled{cursor:not-allowed;opacity:.6}.attach-btn{width:40px;height:40px;padding:0;background:transparent;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--color-text-secondary);transition:color .2s ease;flex-shrink:0}.attach-btn:hover:not(:disabled){color:var(--color-white)}.attach-btn:disabled{opacity:.4;cursor:not-allowed}.send-btn{width:40px;height:40px;padding:0;background:transparent;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--color-white);transition:color .2s ease;flex-shrink:0}.send-btn:hover:not(:disabled){color:var(--color-cyan)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.attachment-strip{display:flex;flex-wrap:wrap;gap:var(--spacing-sm)}.attachment-chip{display:flex;align-items:center;gap:var(--spacing-sm);padding:6px 10px;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface-overlay);max-width:min(100%,320px)}.attachment-thumb{width:36px;height:36px;border-radius:var(--radius-md);object-fit:cover;flex-shrink:0;border:1px solid rgba(255,255,255,.12)}.attachment-meta{min-width:0;display:flex;flex-direction:column;line-height:1.2}.attachment-name{font-size:var(--font-size-sm);color:var(--color-white);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.attachment-size{font-size:11px;color:var(--color-text-muted)}.remove-attachment{width:20px;height:20px;border:none;border-radius:50%;background:transparent;color:var(--color-text-muted);cursor:pointer;line-height:1;font-size:14px;padding:0}.remove-attachment:hover{background:#ffffff14;color:var(--color-white)}.upload-error{margin:0;color:#fca5a5;font-size:var(--font-size-xs)}.system-prompt-panel{background-color:var(--color-input-bg);border-radius:var(--radius-lg);padding:var(--spacing-md);border:1px solid var(--color-border)}@media(max-width:768px){.welcome-container{padding-bottom:calc(var(--spacing-xl) + env(safe-area-inset-bottom,0px))}.welcome-heading{font-size:var(--font-size-2xl)}.welcome-input-wrapper{max-width:100%}.welcome-input{overflow:hidden}.attach-btn,.send-btn{width:32px;height:32px}.send-btn svg{width:20px;height:20px}}