:root {
  --primary:#F25C05; --primary-dark:#D94F04; --secondary:#4E555B; --bg:#F4F6F8; --surface:#fff;
  --text:#20252A; --muted:#6B7280; --border:#D9DEE3; --success:#1F8A4C; --danger:#C0392B;
}
*{box-sizing:border-box} body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
.layout{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{background:#222a30;color:#fff;padding:20px;display:flex;flex-direction:column;gap:24px}
.brand{display:flex;gap:12px;align-items:center}.brand img{width:58px;height:58px;object-fit:contain;background:#fff;border-radius:8px;padding:4px}.brand span,.userbox span{display:block;color:#c7cdd3;font-size:12px;margin-top:4px}
.sidebar nav{display:grid;gap:8px}.sidebar nav a{color:#fff;text-decoration:none;padding:12px 14px;border-radius:10px;background:rgba(255,255,255,.04)}.sidebar nav a:hover{background:rgba(242,92,5,.2)}
.content{padding:24px}.topbar,.card,.table-wrap,.form-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:0 8px 20px rgba(28,34,40,.06)}
.topbar{padding:18px 20px;margin-bottom:20px;display:flex;justify-content:space-between;align-items:center}.page-title{margin:0}.muted{color:var(--muted)}
.grid{display:grid;gap:16px}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}
.card{padding:20px}.card h3{margin-top:0}.metric{font-size:30px;font-weight:700}.btn{display:inline-block;border:none;background:var(--primary);color:#fff;padding:10px 16px;border-radius:10px;text-decoration:none;cursor:pointer}.btn.secondary{background:var(--secondary)}.btn.light{background:#eef2f5;color:var(--text)}
.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:12px 14px;border-bottom:1px solid var(--border);text-align:left}.table th{font-size:13px;color:var(--muted)}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-size:12px;background:#eef2f5}.badge.ganado{background:#e7f7ee;color:var(--success)}.badge.perdido{background:#fdecea;color:var(--danger)}
.form-card{padding:24px;max-width:980px}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:10px;background:#fff}textarea{min-height:120px}
.alert{padding:12px 14px;border-radius:12px;margin-bottom:16px}.alert.success{background:#e8f7ef;color:var(--success)}.alert.error{background:#fdecea;color:var(--danger)}
.login-page{display:grid;place-items:center;min-height:100vh;padding:20px}.login-card{width:min(460px,100%);background:#fff;border:1px solid var(--border);border-radius:18px;padding:30px;box-shadow:0 10px 30px rgba(28,34,40,.08)}
.login-logo{text-align:center;margin-bottom:20px}.login-logo img{width:110px;height:auto}.actions{display:flex;gap:10px;flex-wrap:wrap}.filters{display:grid;grid-template-columns:2fr 1fr 1fr 1fr auto;gap:12px;margin-bottom:16px}
@media (max-width: 1100px){.grid-4,.grid-2,.form-grid,.filters{grid-template-columns:1fr}.layout{grid-template-columns:1fr}.sidebar{display:none}.content{padding:16px}}