:root{--navy:#123b4a;--navy-2:#0d2d38;--teal:#1f6e78;--sand:#d7b77b;--bg:#f5f7f7;--card:#fff;--text:#17252d;--muted:#71808a;--line:#e5eaec;--success:#19734d;--danger:#a23a3a;--warning:#b77a1a;--blue:#2d5f8d;--radius:18px;--shadow:0 12px 32px rgba(18,59,74,.07)}*{box-sizing:border-box}html{font-family:Arial,Tahoma,sans-serif;background:var(--bg);color:var(--text)}body{margin:0;background:var(--bg)}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}.app-shell{min-height:100vh}.sidebar{position:fixed;right:0;top:0;bottom:0;width:255px;background:linear-gradient(180deg,var(--navy-2),var(--navy));padding:22px 16px;color:#fff;z-index:30;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;padding:4px 8px 24px}.brand-mark,.login-logo{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--sand),#f0d9aa);display:grid;place-items:center;color:var(--navy);font-weight:900;font-size:22px}.brand strong{display:block;font-size:16px}.brand span{font-size:12px;color:#c5d6da}.sidebar nav{display:flex;flex-direction:column;gap:6px}.nav-label{font-size:11px;color:#8fb0b8;padding:18px 12px 6px}.nav-link{display:flex;align-items:center;gap:11px;padding:12px 14px;border-radius:12px;color:#d9e5e8;font-size:14px}.nav-link:hover,.nav-link.active{background:rgba(255,255,255,.1);color:#fff}.nav-link.active{box-shadow:inset -3px 0 var(--sand)}.sidebar-user{margin-top:auto;border-top:1px solid rgba(255,255,255,.12);padding:18px 8px 0;display:flex;gap:10px;align-items:center}.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#fff1;color:#fff;font-weight:bold}.sidebar-user strong,.sidebar-user span{display:block}.sidebar-user span{font-size:11px;color:#a9c0c6;margin-top:3px}.main-area{margin-right:255px;min-height:100vh}.topbar{height:92px;background:#fff;border-bottom:1px solid 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span{font-size:34px;font-weight:800;color:var(--sand)}.visual-card small{color:#d6e2e4}.login-panel{padding:55px 48px;display:flex;flex-direction:column;justify-content:center}.login-panel h2{margin:20px 0 5px;font-size:28px}.login-panel>p{color:var(--muted);margin:0 0 28px}.demo-accounts{margin-top:22px;padding:14px;background:#f6f8f8;border-radius:12px;display:flex;flex-direction:column;gap:5px;font-size:10px;color:var(--muted)}.demo-accounts strong{color:var(--text)}@media(max-width:1200px){.metrics-grid{grid-template-columns:repeat(3,1fr)}.room-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:900px){.sidebar{transform:translateX(110%);transition:.25s}.sidebar.open{transform:none}.main-area{margin-right:0}.mobile-only{display:inline-flex}.topbar{padding:0 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