:root{--panel-sidebar:#0f172a;--panel-sidebar-soft:#172033;--panel-bg:#f6f8fb;--panel-border:#e5e9f0;--panel-text:#172033;--panel-muted:#697386;--panel-brand:#6758ef;--panel-brand-soft:#efedff}
.panel-v5-body{background:var(--panel-bg);color:var(--panel-text)}.panel-shell-v5{min-height:100vh;display:grid;grid-template-columns:278px minmax(0,1fr)}.panel-sidebar-v5{position:sticky;top:0;height:100vh;background:linear-gradient(180deg,#0e1524,#101827 70%,#0d1422);color:#fff;padding:20px 16px;display:flex;flex-direction:column;z-index:100;border-right:1px solid rgba(255,255,255,.05)}.panel-brand-row{display:flex;align-items:center;justify-content:space-between;padding:0 8px 16px;border-bottom:1px solid rgba(255,255,255,.08)}.panel-brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:#fff}.panel-brand-mark{width:42px;height:42px;border-radius:13px;background:linear-gradient(145deg,#7668ff,#5648db);display:grid;place-items:center;font-weight:900;box-shadow:0 12px 28px rgba(103,88,239,.28)}.panel-brand strong,.panel-brand small{display:block}.panel-brand strong{font-size:1rem}.panel-brand small{font-size:.66rem;color:#8f9bad;margin-top:2px}.panel-sidebar-close{display:none;width:38px;height:38px;border:0;border-radius:10px;background:#1d2739;color:#fff;font-size:1.3rem}.panel-nav-v5{display:grid;gap:18px;margin-top:18px;overflow:auto;padding-right:3px}.panel-nav-v5 section{display:grid;gap:5px}.panel-nav-label{display:block;padding:0 11px 7px;color:#728099;font-size:.62rem;font-weight:850;text-transform:uppercase;letter-spacing:.14em}.panel-nav-v5 a{display:grid;grid-template-columns:34px minmax(0,1fr);align-items:center;gap:10px;min-height:44px;padding:6px 10px;border-radius:12px;text-decoration:none;color:#aeb8c8;font-weight:700;transition:.18s}.panel-nav-v5 a span{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:#192337;color:#c9d1df;font-size:.8rem}.panel-nav-v5 a b{font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.panel-nav-v5 a:hover,.panel-nav-v5 a.active{background:#182238;color:#fff}.panel-nav-v5 a.active span{background:var(--panel-brand);color:#fff}.panel-nav-v5 a.panel-nav-primary{background:linear-gradient(135deg,#6758ef,#7a6df4);color:#fff;margin-top:4px;box-shadow:0 14px 28px rgba(103,88,239,.22)}.panel-nav-v5 a.panel-nav-primary span{background:rgba(255,255,255,.14);color:#fff}.panel-account-v5{margin-top:auto;display:grid;grid-template-columns:42px minmax(0,1fr) 38px;gap:10px;align-items:center;padding:14px 8px 0;border-top:1px solid rgba(255,255,255,.08)}.panel-avatar{width:42px;height:42px;border-radius:13px;background:#263249;display:grid;place-items:center;font-weight:900}.panel-account-v5 strong,.panel-account-v5 small{display:block}.panel-account-v5 strong{font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.panel-account-v5 small{font-size:.64rem;color:#8390a4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.panel-account-v5 form button{width:38px;height:38px;border:0;border-radius:10px;background:#1c2638;color:#cbd4e1}.panel-main-v5{min-width:0}.panel-topbar-v5{height:76px;position:sticky;top:0;z-index:80;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 28px;background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid var(--panel-border)}.panel-topbar-title{display:flex;align-items:center;gap:12px}.panel-topbar-title span{display:block;color:var(--panel-muted);font-size:.68rem}.panel-topbar-title h1{margin:1px 0 0;font-size:1rem;letter-spacing:-.02em}.panel-menu-button{display:none;width:42px;height:42px;border:1px solid var(--panel-border);border-radius:11px;background:#fff}.panel-topbar-actions{display:flex;align-items:center;gap:10px}.panel-content-v5{padding:28px;max-width:1640px;width:100%;margin:0 auto}.panel-backdrop{display:none}.event-overview-v5{display:grid;gap:22px}.event-hero-v5{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:24px;padding:28px;border:1px solid var(--panel-border);border-radius:24px;background:linear-gradient(145deg,#fff,#f7f8fc);box-shadow:0 10px 34px rgba(15,23,42,.05)}.event-hero-v5 h1{margin:8px 0 10px;font-size:clamp(2.2rem,5vw,4.8rem);line-height:.96;letter-spacing:-.065em}.event-hero-v5 p{margin:0;color:var(--panel-muted)}.event-actions-v5{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:10px}.event-stats-v5{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.event-stat-v5{position:relative;overflow:hidden;padding:20px;border:1px solid var(--panel-border);border-radius:18px;background:#fff;box-shadow:0 4px 16px rgba(15,23,42,.04)}.event-stat-v5 span{display:block;color:var(--panel-muted);font-size:.72rem;font-weight:750}.event-stat-v5 strong{display:block;margin-top:10px;font-size:2rem;letter-spacing:-.04em}.event-stat-v5:after{content:"";position:absolute;width:64px;height:64px;border-radius:50%;right:-20px;top:-20px;background:var(--panel-brand-soft)}.event-grid-v5{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(330px,.75fr);gap:20px}.event-card-v5{padding:24px;border:1px solid var(--panel-border);border-radius:20px;background:#fff;box-shadow:0 4px 18px rgba(15,23,42,.04)}.event-card-head-v5{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:20px}.event-card-head-v5 h2{margin:0 0 5px;font-size:1rem}.event-card-head-v5 p{margin:0;color:var(--panel-muted);font-size:.78rem}.event-detail-v5{display:grid;grid-template-columns:150px minmax(0,1fr);gap:13px 20px;margin:0}.event-detail-v5 dt{color:var(--panel-muted);font-size:.76rem}.event-detail-v5 dd{margin:0;font-weight:700;overflow-wrap:anywhere}.event-upload-v5{position:relative;display:grid;place-items:center;text-align:center;min-height:170px;border:1px dashed #bcc5d2;border-radius:16px;background:#fafbfe;padding:22px;overflow:hidden}.event-upload-v5 input{position:absolute;inset:0;opacity:0;cursor:pointer}.event-upload-v5 .upload-icon{width:48px;height:48px;border-radius:14px;background:var(--panel-brand-soft);color:var(--panel-brand);display:grid;place-items:center;font-size:1.2rem;margin-bottom:10px}.event-upload-v5 strong,.event-upload-v5 small{display:block}.event-upload-v5 small{color:var(--panel-muted);margin-top:5px;font-size:.72rem}.event-upload-v5:hover{border-color:var(--panel-brand);background:#f8f7ff}.panel-card-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:20px}.panel-card{background:#fff;border:1px solid var(--panel-border);border-radius:20px;box-shadow:0 4px 18px rgba(15,23,42,.04);padding:22px}.panel-card h2{margin:0 0 6px;font-size:1rem}.panel-card p{margin:0;color:var(--panel-muted)}.flash-stack{top:92px}
@media(max-width:1180px){.panel-shell-v5{grid-template-columns:236px minmax(0,1fr)}.panel-content-v5{padding:24px}.event-grid-v5{grid-template-columns:1fr}.event-actions-v5{justify-content:flex-start}.event-hero-v5{grid-template-columns:1fr}.event-stats-v5{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:920px){.panel-shell-v5{display:block}.panel-sidebar-v5{position:fixed;left:-290px;width:278px;transition:left .22s ease;box-shadow:24px 0 70px rgba(0,0,0,.28)}body.sidebar-open .panel-sidebar-v5{left:0}.panel-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.42);z-index:90}body.sidebar-open .panel-backdrop{display:block}.panel-sidebar-close,.panel-menu-button{display:grid;place-items:center}.panel-topbar-v5{padding:0 18px}.panel-content-v5{padding:22px 18px 48px}}
@media(max-width:640px){.panel-topbar-v5{height:68px;padding:0 12px}.panel-topbar-actions .btn-secondary{display:none}.panel-topbar-actions .btn{min-height:38px;padding:0 12px}.panel-content-v5{padding:16px 12px 40px}.event-hero-v5{padding:20px;border-radius:18px}.event-hero-v5 h1{font-size:2.35rem}.event-actions-v5{display:grid;grid-template-columns:1fr 1fr}.event-actions-v5 .btn{width:100%}.event-stats-v5{grid-template-columns:1fr 1fr;gap:10px}.event-stat-v5{padding:16px}.event-stat-v5 strong{font-size:1.65rem}.event-card-v5{padding:18px;border-radius:16px}.event-detail-v5{grid-template-columns:1fr;gap:4px}.event-detail-v5 dd{margin-bottom:10px}.panel-topbar-title h1{max-width:38vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}
@media(max-width:430px){.event-actions-v5{grid-template-columns:1fr}.event-stats-v5{grid-template-columns:1fr}.panel-account-v5{grid-template-columns:42px minmax(0,1fr) 38px}}

/* v2.1 panel overflow hardening */
.panel-main-v5{overflow:clip}.panel-content-v5,.panel-content-v5>*{min-width:0}.panel-content-v5 h1,.panel-content-v5 h2,.panel-content-v5 h3{overflow-wrap:anywhere;text-wrap:balance}.event-hero-v5{overflow:hidden}.event-hero-v5 h1{max-width:18ch;overflow-wrap:anywhere}.panel-card,.event-card-v5{min-width:0;overflow:hidden}.panel-content-v5 table{max-width:100%}.panel-content-v5 input,.panel-content-v5 select,.panel-content-v5 textarea{max-width:100%}.panel-brand-logo{display:block;width:auto;max-width:150px;max-height:44px;object-fit:contain}.panel-topbar-title{min-width:0}.panel-topbar-title>div{min-width:0}.panel-topbar-title h1{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(58vw,760px)}@media(max-width:1180px){.panel-shell-v5{grid-template-columns:230px minmax(0,1fr)}}@media(max-width:640px){.panel-topbar-title h1{max-width:42vw}}