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var(--border);justify-content:center;align-items:center;gap:8px;display:flex}.blackboard-gesture-hint{color:var(--muted-foreground);font-size:11px}.blackboard-load-error{background:var(--background);justify-content:center;align-items:center;gap:4px;font-size:14px;display:flex;position:absolute;top:0;right:0;bottom:0;left:0}.blackboard-load-error button{color:var(--primary);text-decoration:underline}@media(max-width:360px){.blackboard-viewer-controls{gap:4px}.blackboard-gesture-hint{font-size:10px}}@media print{.blackboard-viewer{display:none!important}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-divide-y-reverse{syntax:"*";inherits:false;initial-value:0}@property 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--tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property 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var(--border);border-radius:var(--radius,12px);background:var(--card);padding:13px 16px;margin:0 0 16px;color:var(--foreground);min-height:68px}.account-guest-primary>span{flex:1}.account-guest-primary strong{display:block;font-size:14px;font-weight:600}.account-guest-primary small{display:block;font-size:11px;color:var(--muted-foreground);margin-top:4px}.account-guest-primary>svg{color:var(--primary);flex-shrink:0}.account-intro{margin-top:14px;margin-bottom:18px}.account-alternative{padding:14px 0 0;text-align:center}.account-alternative>span{display:block;font-size:10px;color:var(--muted-foreground)}.account-alternative button{min-height:44px;display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--muted-foreground);padding:8px 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var(--border);margin-top:12px;padding-top:3px}.cloud-email-option a{display:flex;align-items:center;gap:8px;font-size:11px;min-height:44px;color:var(--muted-foreground)}.cloud-email-option a span{font-size:10px;opacity:.8}.cloud-email-option p{font-size:11px;line-height:1.8;color:var(--muted-foreground);padding:10px 0 3px}.cloud-email-guest{display:flex;min-height:44px;align-items:center;justify-content:center;color:var(--muted-foreground);font-size:11px;margin-top:3px}