:root{--blue:#154c8f;--dark:#0f3565;--red:#d9272e;--bg:#f5f7fb;--border:#dfe5ef;--muted:#667085}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:#172033}
a{text-decoration:none;color:inherit}.shell{min-height:100vh;display:grid;grid-template-columns:250px 1fr}
.sidebar{background:#08162f;color:#dbe8ff;padding:24px 18px}.brand{display:flex;gap:10px;align-items:center;font-weight:900;margin-bottom:28px}
.mark{width:16px;height:16px;background:var(--red);clip-path:polygon(0 0,100% 50%,0 100%)}
.nav-title{font-size:11px;font-weight:800;opacity:.55;text-transform:uppercase;margin:22px 10px 8px}
.nav-link{display:block;padding:12px 14px;border-radius:12px;margin:4px 0}.nav-link:hover{background:#173760;color:#fff}
.main{min-width:0}.topbar{height:68px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 28px}
.content{padding:28px}.page-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:22px}.page-head h1{margin:0 0 6px}
.card{background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:0 12px 32px rgba(15,53,101,.05)}.card-body{padding:22px}
.grid{display:grid;gap:18px}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.stat strong{display:block;font-size:2rem;margin-top:8px}.muted{color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:12px 16px;font-weight:800;cursor:pointer}.btn-primary{background:var(--red);color:#fff}.btn-secondary{background:#eef3f9;color:var(--dark)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}label{display:block;font-size:.86rem;font-weight:800;margin-bottom:6px}
input,select,textarea{width:100%;padding:12px 13px;border:1px solid #cfd8e6;border-radius:12px;font:inherit;background:#fff}textarea{min-height:110px}.span-2{grid-column:span 2}
.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{padding:14px 16px;border-bottom:1px solid #edf0f5;text-align:left;white-space:nowrap}
th{font-size:.78rem;text-transform:uppercase;color:#475467}.badge{display:inline-flex;border-radius:999px;padding:6px 10px;font-size:.75rem;font-weight:800}.activo{background:#e9fbf0;color:#067647}.configuracion{background:#eef4ff;color:#175cd3}.suspendido,.cancelado{background:#fff0f0;color:#b42318}
.alert{margin-bottom:18px;border-radius:14px;padding:14px 16px;font-weight:700}.success{background:#ecfdf3;color:#027a48}.danger{background:#fef3f2;color:#b42318}
.login-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#08162f,#154c8f);padding:20px}.login-card{width:min(440px,100%);background:#fff;border-radius:24px;padding:30px}.login-card form{display:grid;gap:16px}
@media(max-width:800px){.shell{grid-template-columns:1fr}.sidebar{display:none}.content{padding:18px}.grid-4,.form-grid{grid-template-columns:1fr}.span-2{grid-column:auto}.page-head{align-items:flex-start;flex-direction:column}}