:root{--primary: #007AFF;--primary-hover: #0051D5;--accent: #00D4FF;--success: #34C759;--danger: #FF3B30;--warning: #FF9500;--surface: rgba(20, 20, 30, .8);--surface-variant: rgba(15, 20, 40, .5);--glass-border: rgba(255, 255, 255, .15);--glass-input: rgba(255, 255, 255, .1);--glass-hover: rgba(255, 255, 255, .06);--glass-active: rgba(0, 122, 255, .18);--text-primary: rgba(255, 255, 255, .92);--text-secondary: rgba(255, 255, 255, .55);--text-tertiary: rgba(255, 255, 255, .3);--divider: rgba(255, 255, 255, .12);--bubble-out: rgba(0, 122, 255, .82);--bubble-in: rgba(255, 255, 255, .1);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .25);--shadow-md: 0 4px 20px rgba(0, 0, 0, .35);--shadow-lg: 0 8px 40px rgba(0, 0, 0, .5);--radius-sm: 12px;--radius-md: 16px;--radius-lg: 20px;--radius-xl: 28px;--t: all .25s cubic-bezier(.4, 0, .2, 1);--t-fast: all .15s cubic-bezier(.4, 0, .2, 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var(--glass-border);border-radius:var(--radius-sm);font-size:14px;color:var(--text-primary);outline:none;transition:var(--t)}.form-input::placeholder{color:var(--text-tertiary)}.form-input:focus{background:#ffffff24;border-color:var(--primary);box-shadow:0 0 0 3px 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.new-chat-input{width:100%;padding-left:34px;padding-right:28px}.new-chat-clear{position:absolute;right:8px;background:none;border:none;color:var(--text-tertiary);cursor:pointer;display:flex;align-items:center;padding:2px;border-radius:50%;transition:var(--t-fast)}.new-chat-clear:hover{color:var(--text-primary)}.search-preview{padding:0 16px 10px;border-bottom:1px solid var(--divider)}.search-preview-hint{font-size:12px;color:var(--text-tertiary);padding:4px 0;display:block}.search-preview-error{color:var(--danger)}.search-preview-user{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:var(--radius-sm);cursor:pointer;transition:var(--t-fast);border:1px solid 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