:root{--navy:#0b1f33;--blue:#0f6b91;--teal:#18a999;--bg:#f3f7f9;--card:#fff;--text:#11202d;--muted:#6b7c8d;--line:#dbe5ea;--green:#0b8f68;--amber:#b7791f;--red:#b42318}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text)}a{color:inherit}
.app-shell{display:flex;min-height:100vh}.sidebar{width:280px;background:var(--navy);color:white;padding:24px;display:flex;flex-direction:column;gap:24px}.brand{display:flex;gap:12px;align-items:center}.brand-mark{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--teal),var(--blue));display:grid;place-items:center;font-weight:900}.brand h1{font-size:22px;margin:0}.brand p{margin:2px 0 0;color:#a9bac7;font-size:13px}
nav{display:flex;flex-direction:column;gap:6px}nav a{padding:12px 14px;border-radius:12px;color:#d9e5ec;text-decoration:none}nav a:hover{background:#17344e;color:white}.side-card{margin-top:auto;background:#102b43;border:1px solid #24445d;border-radius:16px;padding:16px}.logout{color:#a9e8df}
.main{flex:1;padding:28px;overflow:auto}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.topbar h2{margin:4px 0 0;font-size:30px}.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:12px;color:var(--teal);font-weight:900}
.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 10px 30px rgba(14,35,54,.06);margin-bottom:18px}.hero{background:linear-gradient(135deg,#0b1f33,#0f6b91);color:white;border-radius:28px;padding:32px;margin-bottom:22px}.hero h3{font-size:34px;margin:8px 0}.hero p{color:#c7d8e2}
.grid{display:grid;gap:18px}.three{grid-template-columns:repeat(3,1fr)}.two{grid-template-columns:repeat(2,1fr)}.metric span{color:var(--muted);font-weight:700}.metric strong{display:block;font-size:42px;margin:8px 0}.muted{color:var(--muted)}
button,.button{border:none;border-radius:14px;padding:12px 16px;font-weight:900;cursor:pointer;text-decoration:none;display:inline-block}.primary{background:linear-gradient(135deg,var(--blue),var(--teal));color:white}.secondary{background:white;border:1px solid var(--line);color:var(--text)}.danger{background:#fee4e2;color:#912018}
input,select,textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:12px;margin:6px 0 12px;background:white}label{font-weight:800;color:#344054}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-size:13px}.actions{display:flex;gap:10px;flex-wrap:wrap}.flash{background:#e9faf6;color:var(--green);border:1px solid #9adccd;padding:12px 14px;border-radius:14px;margin-bottom:18px;font-weight:800}
.boat-diagram{display:grid;gap:8px;margin-top:14px}.seat-row{display:grid;grid-template-columns:72px 1fr 1fr;gap:8px;align-items:center}.row-label{color:var(--muted);font-weight:900}.seat{min-height:44px;background:#f8fbfc;border:1px solid var(--line);border-radius:14px;padding:10px;font-weight:900}.seat.empty{color:#9aa9b6;font-weight:600}.role-label{text-align:center;color:var(--muted);font-weight:900;margin:10px}.warning{background:#fff8e6;border:1px solid #f6d48b;color:#7a4f00;border-radius:14px;padding:12px;margin:10px 0}
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}.login-card{max-width:460px;width:100%}
@media(max-width:900px){.app-shell{display:block}.sidebar{width:auto;border-radius:0 0 24px 24px}nav{display:grid;grid-template-columns:repeat(3,1fr)}.main{padding:18px}.three,.two{grid-template-columns:1fr}.seat-row{grid-template-columns:56px 1fr 1fr}.topbar{align-items:flex-start;flex-direction:column}}
@media print{.sidebar,.topbar,.no-print{display:none!important}.main{padding:0}.card{box-shadow:none;border:none}body{background:white}}