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var(--color-border);border-radius:var(--border-radius-md);background:var(--color-bg-primary);width:100%;max-width:400px;cursor:pointer}.upload-button{padding:var(--spacing-md) var(--spacing-2xl);border:none;border-radius:var(--border-radius-full);background:var(--color-primary);color:#fff;font-size:var(--font-size-base);font-weight:var(--font-weight-bold);cursor:pointer;transition:all var(--transition-normal);box-shadow:var(--shadow-md);position:relative;overflow:hidden;z-index:1}.upload-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s;z-index:-1}.upload-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.upload-button:hover:before{left:100%}.data-calculation-tool{height:100%;display:flex;flex-direction:column;gap:var(--spacing-xl)}.tool-description{background:var(--color-bg-secondary);padding:var(--spacing-lg);border-radius:var(--border-radius-lg);border:1px solid var(--color-border-light)}.tool-description p{margin-bottom:var(--spacing-sm);color:var(--color-text-secondary);line-height:1.6}.calculation-results{flex:1;display:flex;flex-direction:column;gap:var(--spacing-lg)}.results-header{display:flex;justify-content:space-between;align-items:center}.results-header h4{font-size:var(--font-size-lg);font-weight:var(--font-weight-bold);color:var(--color-text-primary);margin:0}.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-md)}.metric-card{background:var(--color-bg-primary);padding:var(--spacing-lg);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--color-border-light);text-align:center;transition:all var(--transition-normal)}.metric-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.metric-label{font-size:var(--font-size-sm);color:var(--color-text-tertiary);margin-bottom:var(--spacing-xs)}.metric-value{font-size:var(--font-size-2xl);font-weight:var(--font-weight-bold);color:var(--color-text-primary);background:var(--color-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.platform-section{background:var(--color-bg-primary);padding:var(--spacing-lg);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--color-border-light)}.platform-section h5{font-size:var(--font-size-base);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);margin-bottom:var(--spacing-md);position:relative;display:inline-block}.platform-section h5:after{content:"";position:absolute;bottom:-4px;left:0;width:30px;height:2px;background:var(--color-primary);border-radius:1px}.platform-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--spacing-md)}.platform-stats div{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.platform-stats div strong{color:var(--color-text-primary);font-weight:var(--font-weight-semibold)}@media (max-width: 1200px){.tools-layout{flex-direction:column;height:auto}.tools-sidebar{flex:none;width:100%;max-height:300px}.tools-main{flex:none;min-height:400px}}@media (max-width: 768px){.tools-sidebar,.tools-main{padding:var(--spacing-lg)}.upload-area{padding:var(--spacing-2xl)}.tools-nav{gap:var(--spacing-sm)}.tool-item{padding:var(--spacing-md)}}.text-center{text-align:center}.text-right{text-align:right}.mb-0{margin-bottom:0}.mt-0{margin-top:0}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.flex-wrap{flex-wrap:wrap}.tenant-guard-container{min-height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(135deg,#f5f7fa,#c3cfe2)}.tenant-guard-loading{text-align:center}.tenant-guard-loading p{margin-top:var(--spacing-lg);font-size:var(--font-size-lg);color:var(--color-text-secondary)}.spinner{width:50px;height:50px;border:4px solid var(--color-border);border-top:4px solid var(--color-primary-single);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.tenant-guard-prompt{background:var(--color-bg-primary);padding:var(--spacing-3xl);border-radius:var(--border-radius-xl);box-shadow:var(--shadow-xl);border:1px solid var(--color-border-light);text-align:center;max-width:500px;width:90%;position:relative;overflow:hidden;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:fadeInUp .6s var(--animation-ease-in-out)}.tenant-guard-prompt:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--color-primary);width:100%}.tenant-guard-prompt h1{font-size:var(--font-size-3xl);font-weight:var(--font-weight-bold);color:var(--color-text-primary);margin-bottom:var(--spacing-sm);background:var(--color-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.tenant-guard-prompt h2{font-size:var(--font-size-xl);font-weight:var(--font-weight-semibold);color:var(--color-text-secondary);margin-bottom:var(--spacing-lg)}.tenant-guard-prompt p{font-size:var(--font-size-base);color:var(--color-text-tertiary);margin-bottom:var(--spacing-xl)}.tenant-form{display:flex;flex-direction:column;gap:var(--spacing-md)}.tenant-input{width:100%;padding:var(--spacing-md) var(--spacing-lg);border:2px solid var(--color-border);border-radius:var(--border-radius-full);font-size:var(--font-size-base);background:var(--color-bg-primary);color:var(--color-text-primary);transition:all var(--transition-normal);box-shadow:var(--shadow-sm)}.tenant-input:focus{outline:none;border-color:var(--color-primary-single);box-shadow:0 0 0 3px #667eea33;transform:translateY(-1px)}.tenant-input::placeholder{color:var(--color-text-light)}.tenant-submit-btn{width:100%;padding:var(--spacing-md) var(--spacing-xl);border:none;border-radius:var(--border-radius-full);background:var(--color-primary);color:#fff;font-size:var(--font-size-base);font-weight:var(--font-weight-bold);cursor:pointer;transition:all var(--transition-normal);box-shadow:var(--shadow-md);position:relative;overflow:hidden;z-index:1}.tenant-submit-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s;z-index:-1}.tenant-submit-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.tenant-submit-btn:hover:before{left:100%}.tenant-error{margin-top:var(--spacing-lg);padding:var(--spacing-md);background:linear-gradient(135deg,#ff416c,#ff4b2b);color:#fff;border-radius:var(--border-radius-lg);font-size:var(--font-size-sm);text-align:center;animation:shake .5s;box-shadow:var(--shadow-md)}