@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--blue:#2563eb;--blue-dark:#1d4ed8;--green:#16a34a;--red:#dc2626;--orange:#d97706;--gray:#6b7280;--gray-light:#f3f4f6;--border:#e5e7eb;--white:#fff;--text:#1f2937;--sidebar-width:210px}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text);background:#f9fafb;font-family:Inter,sans-serif;font-size:14px}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.navbar{background:var(--white);border-bottom:1px solid var(--border);z-index:100;justify-content:space-between;align-items:center;height:54px;padding:0 24px;display:flex;position:sticky;top:0;box-shadow:0 1px 3px #00000014}.navbar .logo{color:var(--blue);font-size:18px;font-weight:700}.navbar .nav-links{align-items:center;gap:12px;list-style:none;display:flex}.navbar .nav-links a{color:var(--text);border-radius:6px;padding:6px 12px;font-weight:500}.navbar .nav-links a:hover{background:var(--gray-light);text-decoration:none}.navbar .nav-links .nav-btn{background:var(--blue);color:var(--white);border-radius:6px;padding:6px 14px}.navbar .nav-links .nav-btn:hover{background:var(--blue-dark)}.auth-wrapper{background:linear-gradient(135deg,#eff6ff,#dbeafe);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-box{background:var(--white);border-radius:10px;width:380px;padding:32px;box-shadow:0 4px 20px #00000014}.auth-box h2{margin-bottom:4px;font-size:20px;font-weight:700}.auth-box p.sub{color:var(--gray);margin-bottom:22px;font-size:13px}.layout{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-width);background:var(--white);border-right:1px solid var(--border);flex-direction:column;height:100vh;padding:0;display:flex;position:fixed;top:0;left:0}.sidebar .sidebar-brand{color:var(--blue);border-bottom:1px solid var(--border);padding:16px 18px;font-size:17px;font-weight:700;display:block}.sidebar nav{flex:1;padding:8px 0}.sidebar nav a{color:var(--text);border-left:3px solid #0000;align-items:center;gap:10px;padding:10px 18px;font-size:14px;font-weight:500;transition:background .15s;display:flex}.sidebar nav a:hover,.sidebar nav a.active{color:var(--blue);border-left-color:var(--blue);background:#eff6ff;text-decoration:none}.sidebar .sidebar-logout{border-top:1px solid var(--border);padding:12px 18px}.sidebar .sidebar-logout button{border:1px solid var(--red);width:100%;color:var(--red);cursor:pointer;background:0 0;border-radius:6px;padding:8px;font-size:14px;font-weight:500}.sidebar .sidebar-logout button:hover{background:#fef2f2}.content{margin-left:var(--sidebar-width);flex:1;padding:24px}.page-title{margin-bottom:20px;font-size:20px;font-weight:700}.card{background:var(--white);border:1px solid var(--border);border-radius:8px;padding:20px}.stats-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px;margin-bottom:22px;display:grid}.stat-card{background:var(--white);border:1px solid var(--border);text-align:center;border-radius:8px;padding:18px}.stat-card .s-icon{margin-bottom:8px;font-size:26px}.stat-card .s-value{color:var(--blue);font-size:26px;font-weight:700}.stat-card .s-label{color:var(--gray);margin-top:3px;font-size:12px}.btn{cursor:pointer;border:none;border-radius:6px;align-items:center;gap:5px;padding:7px 14px;font-size:13px;font-weight:500;transition:opacity .15s;display:inline-flex}.btn:hover{opacity:.85}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--blue);color:var(--white)}.btn-success{background:var(--green);color:var(--white)}.btn-danger{background:var(--red);color:var(--white)}.btn-warning{background:var(--orange);color:var(--white)}.btn-outline{color:var(--blue);border:1px solid var(--blue);background:0 0}.btn-sm{padding:4px 9px;font-size:12px}.btn-block{justify-content:center;width:100%}.form-group{margin-bottom:14px}.form-group label{margin-bottom:5px;font-size:13px;font-weight:500;display:block}.form-group input,.form-group select,.form-group textarea{border:1px solid var(--border);width:100%;color:var(--text);background:var(--white);border-radius:6px;padding:8px 11px;font-family:inherit;font-size:13px}.form-group input:focus,.form-group select:focus{border-color:var(--blue);outline:none;box-shadow:0 0 0 2px #2563eb1a}.form-grid-2{grid-template-columns:1fr 1fr;gap:12px;display:grid}.alert{border-radius:6px;margin-bottom:14px;padding:10px 14px;font-size:13px}.alert-success{color:#166534;background:#dcfce7;border:1px solid #86efac}.alert-error{color:#991b1b;background:#fee2e2;border:1px solid #fca5a5}.alert-warning{color:#854d0e;background:#fef9c3}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:13px}th{background:var(--gray-light);text-align:left;color:var(--gray);border-bottom:1px solid var(--border);padding:9px 12px;font-weight:600}td{border-bottom:1px solid var(--border);vertical-align:middle;padding:9px 12px}tr:last-child td{border-bottom:none}tr:hover td{background:#f8fafc}.badge{border-radius:999px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-block}.badge-ok{color:#166534;background:#dcfce7}.badge-expired{color:#991b1b;background:#fee2e2}.badge-low{color:#854d0e;background:#fef9c3}.modal-bg{z-index:200;background:#0006;justify-content:center;align-items:center;display:none;position:fixed;inset:0}.modal-bg.open{display:flex}.modal-box{background:var(--white);border-radius:10px;width:90%;max-width:460px;padding:22px;box-shadow:0 8px 30px #00000026}.modal-head{justify-content:space-between;align-items:center;margin-bottom:18px;display:flex}.modal-head h3{font-size:16px;font-weight:600}.modal-close{cursor:pointer;color:var(--gray);background:0 0;border:none;font-size:18px}.search-row{gap:8px;margin-bottom:14px;display:flex}.search-row input{border:1px solid var(--border);border-radius:6px;flex:1;padding:7px 11px;font-size:13px}.search-row input:focus{border-color:var(--blue);outline:none}.chat-window{background:var(--white);border:1px solid var(--border);border-radius:8px;flex-direction:column;gap:10px;height:380px;margin-bottom:10px;padding:14px;display:flex;overflow-y:auto}.msg{white-space:pre-line;border-radius:8px;max-width:72%;padding:9px 13px;font-size:13px;line-height:1.5}.msg.user{background:var(--blue);color:var(--white);border-bottom-right-radius:2px;align-self:flex-end}.msg.bot{background:var(--gray-light);color:var(--text);border-bottom-left-radius:2px;align-self:flex-start}.chat-input-row{gap:8px;display:flex}.chat-input-row input{border:1px solid var(--border);border-radius:6px;flex:1;padding:9px 12px;font-size:13px}.chat-input-row input:focus{border-color:var(--blue);outline:none}.bill-item{grid-template-columns:1fr 70px 90px 36px;align-items:center;gap:8px;margin-bottom:8px;display:grid}.hero-section{color:var(--white);text-align:center;background:linear-gradient(135deg,#1d4ed8,#2563eb);padding:72px 24px}.hero-section h1{margin-bottom:14px;font-size:34px;font-weight:700}.hero-section p{opacity:.9;max-width:560px;margin:0 auto 28px;font-size:17px}.hero-btns{justify-content:center;gap:10px;display:flex}.btn-white{background:var(--white);color:var(--blue);font-weight:600}.features-section{text-align:center;max-width:880px;margin:0 auto;padding:56px 24px}.features-section h2{margin-bottom:6px;font-size:24px;font-weight:700}.features-section>p{color:var(--gray);margin-bottom:36px}.features-grid{text-align:left;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;display:grid}.feature-card{background:var(--white);border:1px solid var(--border);border-radius:8px;padding:18px}.feature-card .f-icon{margin-bottom:8px;font-size:26px;display:block}.feature-card h4{margin-bottom:5px;font-size:14px;font-weight:600}.feature-card p{color:var(--gray);font-size:12px}footer{color:#9ca3af;text-align:center;background:#111827;padding:18px;font-size:13px}.profile-avatar{background:var(--blue);width:72px;height:72px;color:var(--white);border-radius:50%;justify-content:center;align-items:center;margin:0 auto 12px;font-size:28px;font-weight:700;display:flex}.flex-between{justify-content:space-between;align-items:center;display:flex}.flex-end{justify-content:flex-end;display:flex}.gap-8{gap:8px}.gap-12{gap:12px}.mb-4{margin-bottom:4px}.mb-8{margin-bottom:8px}.mb-14{margin-bottom:14px}.mb-20{margin-bottom:20px}.mt-12{margin-top:12px}.text-center{text-align:center}.text-muted{color:var(--gray);font-size:13px}.text-right{text-align:right}.w-full{width:100%}.max-w-600{max-width:600px}