*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%;font-family:Arial,Helvetica,sans-serif;color:#1f2937;background:#f4f7fb}body.menu-open{overflow:hidden}:root{--primary:#1f4f82;--primary-dark:#163b62;--sidebar:#173b63;--sidebar-hover:#245887;--background:#f4f7fb;--card:#fff;--text:#1f2937;--muted:#6b7280;--border:#dbe3ec;--danger:#b42318;--danger-bg:#fef3f2;--shadow:0 8px 30px rgba(20,45,70,.08)}
.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:linear-gradient(135deg,#eef5fc 0%,#f8fafc 50%,#eaf1f8 100%)}.login-container{width:100%;max-width:430px}.login-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:38px;box-shadow:var(--shadow)}.login-brand{text-align:center;margin-bottom:28px}.login-brand h1{margin:15px 0 5px;font-size:25px}.login-brand p{margin:0;color:var(--muted);font-size:14px}.brand-icon{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;background:#e5eff9;color:var(--primary);border-radius:10px;font-size:13px;font-weight:800}.brand-icon.large{width:62px;height:62px;border-radius:14px;font-size:18px}.form-group{margin-bottom:19px}.form-group label{display:block;margin-bottom:7px;font-size:14px;font-weight:600}.form-control{width:100%;height:46px;border:1px solid #cbd5e1;border-radius:8px;padding:0 13px;outline:none;background:#fff;color:var(--text);font-size:15px;transition:border-color .15s,box-shadow .15s}.form-control:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,79,130,.12)}.btn-primary{height:46px;border:0;border-radius:8px;padding:0 20px;background:var(--primary);color:#fff;font-size:15px;font-weight:700;cursor:pointer}.btn-primary:hover{background:var(--primary-dark)}.btn-full{width:100%}.alert{border-radius:8px;padding:12px 14px;margin-bottom:20px;font-size:14px}.alert-error{background:var(--danger-bg);color:var(--danger);border:1px solid #fecdca}.app-shell{min-height:100vh;display:flex}.sidebar{width:260px;min-width:260px;min-height:100vh;background:var(--sidebar);color:#fff;display:flex;flex-direction:column;position:fixed;left:0;top:0;bottom:0;z-index:1000}.sidebar-header{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid rgba(255,255,255,.1)}.brand{display:flex;align-items:center;gap:11px}.brand-title{font-size:14px;font-weight:700}.brand-subtitle{margin-top:3px;color:rgba(255,255,255,.65);font-size:11px}.sidebar .brand-icon{background:rgba(255,255,255,.12);color:#fff}.close-menu{display:none;border:0;background:transparent;color:#fff;font-size:29px;line-height:1;cursor:pointer}.side-nav{padding:18px 12px;flex:1;overflow-y:auto}.nav-item{display:flex;align-items:center;gap:12px;min-height:44px;padding:10px 13px;margin-bottom:4px;border-radius:7px;color:rgba(255,255,255,.82);text-decoration:none;font-size:14px;transition:background .15s,color .15s}.nav-item:hover{background:var(--sidebar-hover);color:#fff}.nav-icon{width:20px;text-align:center;font-size:16px}.sidebar-footer{padding:12px;border-top:1px solid rgba(255,255,255,.1)}.logout-item{color:#ffd8d5}.main-area{width:calc(100% - 260px);margin-left:260px;min-width:0}.topbar{height:76px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 28px;gap:15px;position:sticky;top:0;z-index:100}.topbar-title{flex:1}.topbar-title h1{margin:0;font-size:20px}.menu-button{display:none;width:42px;height:42px;padding:9px;border:1px solid var(--border);background:#fff;border-radius:7px;cursor:pointer}.menu-button span{display:block;height:2px;background:var(--text);margin:5px 0}.user-menu{display:flex;align-items:center;gap:15px}.user-name{font-size:14px;font-weight:600}.logout-small{color:var(--primary);text-decoration:none;font-size:13px}.page-content{padding:28px;max-width:1500px;margin:0 auto}.welcome-card,.content-card,.stat-card{background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 2px 8px rgba(20,45,70,.03)}.welcome-card{padding:25px;margin-bottom:22px}.eyebrow{margin:0 0 5px;color:var(--primary);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em}.welcome-card h2{margin:0 0 8px;font-size:24px}.welcome-card p:last-child{margin:0;color:var(--muted)}.dashboard-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-bottom:22px}.stat-card{padding:20px;display:flex;align-items:center;gap:15px}.stat-icon{width:44px;height:44px;border-radius:9px;background:#eaf2fa;color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px}.stat-label{color:var(--muted);font-size:13px;margin-bottom:5px}.stat-value{font-size:25px;font-weight:700}.content-card{padding:24px}.content-card h3{margin-top:0;margin-bottom:8px}.content-card p{color:var(--muted);margin-bottom:0}.mobile-overlay{display:none}@media(max-width:1100px){.dashboard-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:900px){.sidebar{width:280px;min-width:280px;transform:translateX(-100%);transition:transform .25s ease;box-shadow:12px 0 35px rgba(0,0,0,.15)}.sidebar.mobile-open{transform:translateX(0)}.close-menu{display:block}.mobile-overlay{display:block;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:900;opacity:0;visibility:hidden;transition:opacity .2s}.mobile-overlay.active{opacity:1;visibility:visible}.main-area{width:100%;margin-left:0}.topbar{height:64px;padding:0 15px}.menu-button{display:block}.topbar-title h1{font-size:17px}.user-name{display:none}.page-content{padding:18px 15px}}@media(max-width:600px){.login-page{padding:14px}.login-card{padding:27px 20px;border-radius:12px}.login-brand h1{font-size:22px}.dashboard-grid{grid-template-columns:1fr;gap:12px}.welcome-card{padding:20px}.welcome-card h2{font-size:20px}.content-card{padding:19px}.topbar{gap:9px}}