:root{--primary:#1f4e79;--sidebar:#17324d;--bg:#f4f7fb}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:Arial,Helvetica,sans-serif;color:#28323c;font-size:14px}.wrapper{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--sidebar);color:#fff;position:fixed;top:0;bottom:0;left:0;z-index:1030;overflow-y:auto}.sidebar>h4{padding:20px 18px;margin:0;border-bottom:1px solid rgba(255,255,255,.1);font-size:18px}.sidebar-nav{padding:10px}.nav-item{display:flex;align-items:center;gap:11px;color:#dbe8f3;text-decoration:none;padding:10px 12px;border-radius:7px;margin-bottom:3px}.nav-item:hover,.nav-item.active{background:#285b86;color:#fff;text-decoration:none}.nav-item i{width:20px;text-align:center}.nav-title{font-size:10px;letter-spacing:1px;color:#91a9bd;font-weight:bold;margin:18px 10px 7px}.content{margin-left:240px;width:calc(100% - 240px);min-height:100vh;padding:0}.topbar{height:65px;background:#fff;border-bottom:1px solid #e5e9ef;padding:0 24px;display:flex;align-items:center;justify-content:space-between}.page-body{padding:24px}.card{border:0;border-radius:10px;box-shadow:0 2px 12px rgba(25,45,70,.06)}.card-header{background:#fff;border-bottom:1px solid #edf0f4}.stat-card{padding:20px}.stat-number{font-size:28px;font-weight:700}.small-muted{font-size:12px;color:#778899}.table td,.table th{vertical-align:middle}.badge{font-size:11px}.modal-lg{max-width:900px}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#17324d,#2c6a9f)}.login-card{width:420px;background:#fff;border-radius:14px;padding:35px;box-shadow:0 15px 45px rgba(0,0,0,.18)}.login-icon{width:65px;height:65px;line-height:65px;text-align:center;background:#eaf2f9;color:#1f4e79;border-radius:50%;margin:0 auto 12px;font-size:27px}.room-available{border:1px solid #dfe8ef;border-radius:8px;padding:12px;margin-bottom:8px}.room-available:hover{background:#f7fbff}.availability-box{border-radius:8px;padding:12px;background:#f8fafc;border:1px solid #e7edf3}.dashboard-card{min-height:125px}.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;background:#28a745;margin-right:5px}.sticky-actions{position:sticky;bottom:0;background:#fff;padding:12px;border-top:1px solid #eee;z-index:5}@media(max-width:991px){.sidebar{transform:translateX(-100%);transition:.2s}.sidebar.open{transform:translateX(0)}.content{margin-left:0;width:100%}.page-body{padding:15px}}
/* Modern visual refresh */
.sidebar{background:linear-gradient(180deg,#102a43 0%,#173f60 55%,#0d263b 100%);box-shadow:8px 0 30px rgba(16,42,67,.12)}
.sidebar>h4{padding:22px 18px;background:rgba(255,255,255,.035);font-weight:800;letter-spacing:.3px}
.sidebar-nav{padding:12px 10px 20px}.nav-title{margin:20px 10px 8px;color:#8fb0c9;font-size:9px;letter-spacing:1.5px}.nav-item{position:relative;gap:10px;color:#dceaf5;padding:9px 11px;border-radius:10px;margin-bottom:4px;font-weight:500;transition:all .18s ease}.nav-item:hover{background:rgba(255,255,255,.09);transform:translateX(2px);color:#fff}.nav-item.active{background:linear-gradient(90deg,rgba(50,142,216,.28),rgba(255,255,255,.08));box-shadow:inset 3px 0 0 #55b5f5;color:#fff}.nav-icon{width:32px;height:32px;min-width:32px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;color:#fff;font-size:13px;box-shadow:0 5px 12px rgba(0,0,0,.12)}.icon-home{background:#2878b8}.icon-calendar{background:#7b61c9}.icon-inbox{background:#db8b35}.icon-door{background:#2d9a73}.icon-class{background:#3d78d2}.icon-bed{background:#a55bb6}.icon-users,.icon-people{background:#2b9bb3}.icon-check{background:#3a9b5f}.icon-sitemap{background:#6c63a8}.icon-tags{background:#d26b8c}.icon-layer{background:#5676a8}.icon-building{background:#4f8b9f}.icon-user{background:#7c6bc4}.icon-logout{background:#c95f67}
.topbar{box-shadow:0 2px 12px rgba(25,45,70,.04);position:sticky;top:0;z-index:100}.page-body{padding:26px}.card{border-radius:14px;box-shadow:0 5px 22px rgba(25,45,70,.06)}.card-header{font-weight:600}
.login-page{background:radial-gradient(circle at 15% 20%,rgba(84,181,245,.25),transparent 30%),linear-gradient(135deg,#0e2940,#1f5f8e 60%,#2b7eaa);padding:20px}.login-shell{width:min(930px,100%);display:grid;grid-template-columns:1fr 1fr;background:#fff;border-radius:24px;overflow:hidden;box-shadow:0 25px 70px rgba(0,0,0,.22)}.login-brand-panel{padding:55px 45px;background:linear-gradient(150deg,#12344f,#1f6a9a);color:#fff;display:flex;flex-direction:column;justify-content:center}.brand-mark{width:70px;height:70px;border-radius:20px;background:rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:22px;border:1px solid rgba(255,255,255,.18)}.brand-title{font-size:30px;font-weight:800;letter-spacing:1px}.brand-subtitle{font-size:14px;line-height:1.6;color:#d8ebf8;margin-top:8px}.brand-line{width:58px;height:4px;border-radius:10px;background:#69c2f5;margin:24px 0}.brand-agency{font-size:12px;line-height:1.7;color:#c4dceb}.login-card-modern{padding:55px 48px;background:#fff}.login-heading span{display:block;font-size:25px;font-weight:800;color:#193b56}.login-heading small{display:block;color:#8393a1;margin:7px 0 27px}.login-input-group{height:52px;border:1px solid #dce5ec;border-radius:12px;display:flex;align-items:center;padding:0 15px;margin-bottom:15px;transition:.18s;background:#fbfdff}.login-input-group:focus-within{border-color:#4d9fd2;box-shadow:0 0 0 4px rgba(77,159,210,.1);background:#fff}.login-input-group i{width:24px;color:#5c91b3}.login-input-group input{border:0;outline:0;background:transparent;width:100%;height:100%;font-size:14px}.btn-login-main{width:100%;border:0;border-radius:12px;height:52px;background:linear-gradient(135deg,#1f4e79,#2c82b8);color:#fff;font-weight:700;font-size:15px;box-shadow:0 8px 18px rgba(31,78,121,.22);transition:.18s}.btn-login-main:hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(31,78,121,.28)}.back-monitor{display:block;text-align:center;margin-top:20px;color:#5d7d94;font-size:12px}.back-monitor:hover{text-decoration:none;color:#1f6a9a}
@media(max-width:760px){.login-shell{grid-template-columns:1fr}.login-brand-panel{padding:30px}.login-card-modern{padding:35px 28px}.brand-title{font-size:25px}}