:root{--primary: #2B3D8D;--primary-hover: #1e2b66;--brand-secondary: #88AFF9;--background: #f3f4f6;--card-bg: #ffffff;--text-main: #111827;--text-secondary: #6b7280;--border: #e5e7eb;--success: #10b981;--warning: #f59e0b;--danger: #ef4444}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--background);color:var(--text-main);line-height:1.5}a{text-decoration:none;color:inherit}.dashboard-container,.details-container{max-width:1200px;margin:0 auto;padding:2rem}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,var(--primary) 0%,var(--brand-secondary) 100%)}.login-card{background:var(--card-bg);padding:2.5rem;border-radius:1rem;box-shadow:0 10px 25px #0000001a;width:100%;max-width:400px;text-align:center}.tank-card{background:var(--card-bg);border-radius:.75rem;padding:1.5rem;box-shadow:0 4px 6px -1px #0000000d;transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column;gap:1rem;border:1px solid var(--border)}.tank-card:hover{transform:translateY(-4px);box-shadow:0 10px 15px -3px #0000001a;border-color:var(--primary)}.chart-card,.data-table-card{background:var(--card-bg);border-radius:.75rem;padding:1.5rem;box-shadow:0 4px 6px -1px #0000000d;margin-bottom:2rem}h1{font-size:1.875rem;font-weight:700;margin-bottom:.5rem}h2{font-size:1.25rem;font-weight:600}h3{font-size:1.125rem;font-weight:600;margin-bottom:1rem}.subtitle{color:var(--text-secondary);margin-bottom:2rem}.code{font-family:monospace;color:var(--text-secondary);background:#f9fafb;padding:.25rem .5rem;border-radius:.375rem;font-size:.875rem}.input-group{position:relative;margin-bottom:1rem}.input-group .icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-secondary)}input{width:100%;padding:.75rem 1rem .75rem 2.75rem;border:1px solid var(--border);border-radius:.5rem;font-size:1rem;transition:border-color .2s}input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f61a}.btn-primary{width:100%;padding:.75rem;background-color:var(--primary);color:#fff;border:none;border-radius:.5rem;font-weight:600;cursor:pointer;transition:background-color .2s}.btn-primary:hover{background-color:var(--primary-hover)}.error-message{background-color:#fee2e2;color:var(--danger);padding:.75rem;border-radius:.5rem;margin-bottom:1rem;font-size:.875rem}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.btn-secondary{padding:.5rem 1rem;background-color:#fff;color:var(--text-secondary);border:1px solid var(--border);border-radius:.5rem;font-weight:500;cursor:pointer;transition:all .2s}.btn-secondary:hover{background-color:#f9fafb;color:var(--text-main);border-color:var(--text-secondary)}.tanks-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;margin-top:2rem}.tank-header{display:flex;justify-content:space-between;align-items:flex-start}.last-updated{display:flex;align-items:center;gap:.25rem;font-size:.75rem;color:var(--text-secondary);margin-top:.25rem}.badge{background-color:#e0f2fe;color:#0369a1;padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:600;text-transform:uppercase}.badge.large{font-size:.875rem;padding:.5rem 1rem}.tank-stats{display:grid;grid-template-columns:1fr 1fr;gap:1rem;padding:1rem 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.stat-item{display:flex;align-items:center;gap:.75rem}.stat-item .label{display:block;font-size:.75rem;color:var(--text-secondary)}.stat-item .value{font-weight:600;font-size:1rem}.icon-blue{color:var(--primary)}.icon-red{color:var(--danger)}.icon-green{color:var(--success)}.tank-footer{display:flex;justify-content:space-between;align-items:center;color:var(--primary);font-weight:500;font-size:.875rem}.details-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.back-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--text-secondary);margin-bottom:1.5rem;font-weight:500}.back-link:hover{color:var(--primary)}.chart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.chart-legend .dot{display:inline-block;width:10px;height:10px;background-color:var(--primary);border-radius:50%;margin-right:.5rem}.table-responsive{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:1rem;text-align:left;border-bottom:1px solid var(--border)}th{font-weight:600;color:var(--text-secondary);font-size:.875rem;background-color:#f9fafb}td{font-size:.875rem}tr:last-child td{border-bottom:none}.highlight{color:var(--primary);font-weight:600}.loading{display:flex;justify-content:center;align-items:center;height:100vh;color:var(--text-secondary);font-size:1.125rem}.app-layout{display:flex;min-height:100vh}.main-content{flex:1;padding:2rem;overflow-y:auto}.sidebar{width:250px;background-color:var(--card-bg);border-right:1px solid var(--border);padding:2rem;display:flex;flex-direction:column;height:100vh;position:sticky;top:0;flex-shrink:0}.sidebar-header{margin-bottom:2rem;display:flex;justify-content:center;align-items:center}.sidebar-logo{max-width:100%;height:auto;max-height:80px}.sidebar nav{display:flex;flex-direction:column;gap:1rem;flex:1}.sidebar-footer{margin-top:auto}.menu-link{display:block;padding:.75rem 1rem;border-radius:.5rem;color:var(--text-secondary);font-weight:500;transition:all .2s}.menu-link:hover,.menu-link.active{background-color:#eff6ff;color:var(--primary)}.logout-btn{padding:.75rem;background-color:transparent;color:var(--danger);border:1px solid var(--danger);border-radius:.5rem;font-weight:600;cursor:pointer;transition:all .2s;width:100%}.logout-btn:hover{background-color:#fef2f2}