:root{--dark:#101114;--red:#e51f2a;--red2:#b40f18;--soft:#f5f6f8;--line:#e5e7eb;--text:#191b20;--muted:#69707d;--green:#159447}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--soft);color:var(--text)}a{text-decoration:none;color:inherit}.wrap{width:min(1180px,calc(100% - 32px));margin:auto}.topbar{background:#090a0c;color:#fff;position:sticky;top:0;z-index:50}.topbar .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 0}.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:.4px}.brand-badge{background:var(--red);padding:7px 10px;border-radius:8px}.nav{display:flex;gap:18px;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:11px;padding:13px 18px;font-weight:800;cursor:pointer}.btn-primary{background:linear-gradient(135deg,var(--red),var(--red2));color:#fff;box-shadow:0 10px 25px rgba(229,31,42,.22)}.btn-dark{background:#15171c;color:#fff}.btn-light{background:#fff;border:1px solid var(--line)}.hero{background:radial-gradient(circle at 75% 30%,#30333a 0,#15171c 38%,#090a0c 100%);color:#fff;padding:58px 0 30px;overflow:hidden}.hero-grid{display:grid;grid-template-columns:1fr 1.15fr;align-items:center;gap:34px}.eyebrow{display:inline-block;background:rgba(229,31,42,.15);border:1px solid rgba(255,70,80,.35);padding:8px 12px;border-radius:999px;color:#ff9ca2;font-weight:800}.hero h1{font-size:clamp(38px,5vw,68px);line-height:.98;margin:18px 0}.hero p{font-size:19px;color:#c8ccd4;line-height:1.6}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.hero-bike img{width:115%;max-width:none;margin-left:-8%;filter:drop-shadow(0 24px 28px rgba(0,0,0,.45))}.section{padding:68px 0}.section-title{text-align:center;max-width:700px;margin:0 auto 34px}.section-title h2{font-size:38px;margin:0 0 10px}.section-title p{color:var(--muted);line-height:1.6}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:26px}.card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 12px 35px rgba(10,15,25,.07)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label{font-weight:800;font-size:14px}.field input,.field select,.field textarea{width:100%;padding:13px;border:1px solid #cfd3da;border-radius:10px;font:inherit;background:#fff}.price-box{padding:15px;border-radius:12px;background:#fff4f5;border:1px solid #ffd1d5;font-size:20px;font-weight:900;color:var(--red2)}.preview-stage{position:relative;overflow:hidden;border-radius:18px;background:#fff}.preview-stage .bike{width:100%;display:block}.ad-overlay{position:absolute;left:9.7%;top:11.2%;width:22.4%;height:31.5%;overflow:hidden;border-radius:2px;background:#111}.ad-overlay img{width:100%;height:100%;object-fit:cover;display:none}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature{padding:22px;background:#fff;border:1px solid var(--line);border-radius:18px}.feature .icon{font-size:32px}.footer{background:#0b0c0f;color:#c7cbd2;padding:34px 0}.admin-shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}.sidebar{background:#0d0f13;color:#fff;padding:22px;position:sticky;top:0;height:100vh}.sidebar nav{display:grid;gap:7px;margin-top:25px}.sidebar nav a{padding:11px 12px;border-radius:9px;color:#cfd3dc}.sidebar nav a:hover,.sidebar nav a.active{background:#242832;color:#fff}.admin-main{padding:28px}.admin-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.stat{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.stat b{font-size:30px;display:block;margin-top:8px}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:13px;border-bottom:1px solid var(--line);vertical-align:middle}.badge{display:inline-block;padding:5px 9px;border-radius:999px;font-size:12px;font-weight:900}.badge-pendiente{background:#fff1c4;color:#6c5200}.badge-pagado,.badge-activo,.badge-aprobada{background:#dff7e8;color:#0f6a34}.badge-vencido,.badge-cancelada{background:#e9ebef;color:#555}.alert{padding:13px;border-radius:10px;margin-bottom:15px}.alert-error{background:#ffe7e9;color:#8c1720}.alert-ok{background:#e4f8eb;color:#116734}@media(max-width:900px){.hero-grid,.grid-2{grid-template-columns:1fr}.hero-bike img{width:105%;margin-left:-2%}.features{grid-template-columns:1fr}.admin-shell{display:block}.sidebar{height:auto;position:relative}.stats{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.nav a:not(.btn){display:none}}@media(max-width:520px){.wrap{width:min(100% - 20px,1180px)}.section{padding:46px 0}.card{padding:17px}.stats{grid-template-columns:1fr}.hero{padding-top:40px}.hero h1{font-size:42px}.admin-main{padding:16px}}

/* Navegación administrativa ampliada */
.sidebar nav .sidebar-section{display:block;margin:20px 14px 7px;color:#8f96a3;font-size:.68rem;font-weight:900;letter-spacing:.14em}
.sidebar nav a.active{background:rgba(229,21,32,.13);color:#fff;border-left:3px solid #e51520}
.admin-stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-bottom:24px}
.admin-stat{padding:22px;border:1px solid #e5e7eb;border-radius:18px;background:#fff;box-shadow:0 10px 30px rgba(17,19,24,.06)}
.admin-stat span{display:block;color:#687080;font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em}
.admin-stat strong{display:block;margin-top:9px;font-size:2rem;letter-spacing:-.04em}
.admin-actions{display:flex;flex-wrap:wrap;gap:10px}
.admin-badge{display:inline-flex;padding:5px 9px;border-radius:999px;background:#f0f2f5;font-size:.75rem;font-weight:800}
.admin-table{width:100%;border-collapse:collapse}.admin-table th,.admin-table td{padding:13px;border-bottom:1px solid #eceef2;text-align:left;vertical-align:top}
@media(max-width:900px){.admin-stat-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.admin-stat-grid{grid-template-columns:1fr}}