*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f4f6fb;--surface:#fff;--surface2:#f8faff;--surface3:#eef3ff;
  --border:#e5ebf6;--border2:#cfd8eb;--line:#edf1f8;
  --text:#162033;--text2:#4e5b78;--text3:#8792ab;
  --accent:#d4727a;--accent2:#b04a52;--accent-soft:#fdeef0;
  --green:#16a34a;--green-soft:#dcfce7;
  --amber:#d97706;--amber-soft:#fef3c7;
  --red:#dc2626;--red-soft:#fee2e2;
  --purple:#7c3aed;--purple-soft:#f1edff;
  --radius:16px;--radius-sm:10px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 12px 32px rgba(47,64,110,.08);
  --shadow-md:0 18px 44px rgba(47,64,110,.14);
  --font:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --mono:'SFMono-Regular',Menlo,Consolas,monospace;
  --transition:.18s cubic-bezier(.4,0,.2,1);
}
html{font-size:15px;scroll-behavior:smooth;background:var(--bg)}
body{font-family:var(--font);background:radial-gradient(circle at top left,rgba(212,114,122,.10),transparent 28rem),var(--bg);color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
code{font-family:var(--mono);font-size:.78rem;background:var(--surface2);padding:3px 7px;border-radius:6px;border:1px solid var(--border);color:var(--accent2);word-break:break-word}

.app-shell{display:flex;min-height:100vh}
.sidebar{width:240px;background:rgba(255,255,255,.96);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;position:sticky;top:0;height:100vh;overflow-y:auto;z-index:200;backdrop-filter:blur(16px);box-shadow:8px 0 28px rgba(47,64,110,.04);transition:transform var(--transition)}
.sidebar-logo{padding:22px 18px 14px;border-bottom:1px solid var(--line)}
.logo-mark{display:flex;align-items:center;gap:11px}
.logo-icon{width:38px;height:38px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:15px;flex-shrink:0;box-shadow:0 12px 22px rgba(212,114,122,.30)}
.logo-text{font-size:.92rem;font-weight:800;color:var(--text);line-height:1.15}
.logo-sub{font-size:.68rem;color:var(--text3);font-weight:600;margin-top:2px}
.version-pill{display:inline-flex;align-items:center;gap:5px;margin-top:12px;padding:5px 9px;border-radius:999px;background:var(--surface2);border:1px solid var(--border);color:var(--text3);font-size:.68rem;font-weight:700}
.sidebar-nav{padding:14px 12px;flex:1}
.nav-label{font-size:.64rem;font-weight:800;color:var(--text3);letter-spacing:.09em;text-transform:uppercase;padding:0 9px;margin:15px 0 7px}
.nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:12px;color:var(--text2);font-size:.84rem;font-weight:700;transition:all var(--transition);cursor:pointer;border:none;background:transparent;width:100%;text-align:left;margin-bottom:3px;min-height:40px}
.nav-item i{width:18px;text-align:center;font-size:.86rem}
.nav-item:hover{background:var(--surface2);color:var(--text);transform:translateX(2px)}
.nav-item.active{background:linear-gradient(135deg,var(--accent-soft),#fff7f8);color:var(--accent2);box-shadow:inset 3px 0 0 var(--accent)}
.nav-item.danger{color:var(--red)}
.main-content{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{background:rgba(255,255,255,.9);border-bottom:1px solid var(--border);padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;position:sticky;top:0;z-index:100;backdrop-filter:blur(14px)}
.topbar-left,.topbar-right{display:flex;align-items:center;gap:12px;min-width:0}
.menu-toggle{display:none;background:var(--surface2);border:1px solid var(--border);font-size:1rem;color:var(--text2);cursor:pointer;width:38px;height:38px;border-radius:10px;align-items:center;justify-content:center}
.topbar-title{font-size:1rem;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-chip{display:flex;align-items:center;gap:8px;padding:7px 11px;border-radius:999px;background:var(--surface2);border:1px solid var(--border);font-size:.78rem;font-weight:700;color:var(--text2);max-width:200px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-chip i{color:var(--accent)}
.content-area{padding:26px;flex:1;width:100%;max-width:1440px;margin:0 auto}
.page-header{display:flex;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:22px}
.page-header-title h1,h1{font-size:1.48rem;font-weight:800;line-height:1.2;color:var(--text)}
h2{font-size:1.1rem;font-weight:800;color:var(--text)}
h3{font-size:.98rem;font-weight:800;color:var(--text)}
.page-header-title p,.muted{font-size:.82rem;color:var(--text3);margin-top:5px;line-height:1.55}
.btn-group,.action-row{display:flex;gap:9px;flex-wrap:wrap;align-items:center}

.btn,button:not(.menu-toggle):not(.nav-item),input[type=submit],input[type=button]{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 15px;border-radius:10px;font-size:.82rem;font-weight:800;cursor:pointer;border:1px solid transparent;transition:all var(--transition);text-decoration:none;white-space:nowrap;font-family:var(--font);line-height:1;min-height:38px;background:var(--surface);color:var(--text2);border-color:var(--border2)}
.btn:hover,button:not(.menu-toggle):not(.nav-item):hover{transform:translateY(-1px);box-shadow:0 10px 22px rgba(47,64,110,.10)}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;border-color:transparent;box-shadow:0 12px 22px rgba(212,114,122,.22)}
.btn-outline{background:var(--surface);color:var(--text2);border-color:var(--border2)}
.btn-outline:hover{background:var(--surface2);color:var(--text)}
.btn-green{background:var(--green);color:#fff;border-color:transparent}
.btn-danger{background:var(--red);color:#fff;border-color:transparent}
.btn-sm{padding:7px 11px;font-size:.76rem;min-height:32px;border-radius:9px}
.btn-icon{width:36px;padding:0}

.card,.table-card{background:rgba(255,255,255,.96);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:20px;overflow:hidden}
.card{padding:20px}
.card-header,.table-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.card-header{margin-bottom:16px}
.table-toolbar{padding:16px 20px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff,var(--surface2))}
.card-title{font-size:.98rem;font-weight:800;color:var(--text);display:flex;align-items:center;gap:7px}
.card-sub{font-size:.78rem;color:var(--text3);margin-top:3px;line-height:1.5}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media(max-width:720px){.grid-2,.grid-3{grid-template-columns:1fr}}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:15px;margin-bottom:20px}
.stat-card{background:rgba(255,255,255,.97);border:1px solid var(--border);border-radius:var(--radius);padding:18px;display:flex;align-items:center;gap:14px;box-shadow:var(--shadow);transition:all var(--transition);min-height:100px}
.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.stat-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.08rem;flex-shrink:0}
.stat-icon.blue{background:#e0e7ff;color:#3730a3}
.stat-icon.green{background:var(--green-soft);color:var(--green)}
.stat-icon.amber{background:var(--amber-soft);color:var(--amber)}
.stat-icon.red{background:var(--red-soft);color:var(--red)}
.stat-icon.purple{background:var(--purple-soft);color:var(--purple)}
.stat-icon.pink{background:var(--accent-soft);color:var(--accent2)}
.stat-label{font-size:.7rem;font-weight:800;color:var(--text3);text-transform:uppercase;letter-spacing:.06em}
.stat-value{font-size:1.13rem;font-weight:800;margin-top:3px;color:var(--text)}
.stat-sub{font-size:.72rem;color:var(--text3);margin-top:4px}

input:not([type=hidden]):not([type=checkbox]):not([type=radio]):not([type=submit]):not([type=button]),select,textarea{padding:9px 12px;border:1px solid var(--border2);border-radius:10px;font-size:.83rem;font-family:var(--font);font-weight:600;color:var(--text);background:var(--surface);outline:none;transition:all var(--transition);width:100%;min-height:38px}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(212,114,122,.15);background:#fff}
textarea{min-height:84px;resize:vertical;line-height:1.5}
label{font-size:.76rem;font-weight:800;color:var(--text2);display:block;margin-bottom:6px}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-bottom:13px}

.table-wrap{overflow-x:auto}
table.data{width:100%;border-collapse:separate;border-spacing:0;min-width:680px}
table.data thead th{padding:12px 14px;font-size:.7rem;font-weight:800;text-transform:uppercase;color:var(--text3);background:var(--surface2);border-bottom:1px solid var(--border);text-align:left}
table.data tbody td{padding:12px 14px;font-size:.82rem;border-bottom:1px solid var(--line)}
table.data tbody tr:hover{background:#fbfcff}
.badge{display:inline-flex;align-items:center;gap:5px;border-radius:999px;font-size:.68rem;font-weight:800;padding:4px 9px}
.badge-green{background:var(--green-soft);color:#15803d}
.badge-amber{background:var(--amber-soft);color:#92400e}
.badge-red{background:var(--red-soft);color:#991b1b}
.badge-blue{background:#e0e7ff;color:#3730a3}
.badge-gray{background:var(--surface2);color:var(--text2);border:1px solid var(--border)}

.flash,.err{padding:12px 15px;border-radius:12px;margin-bottom:18px;font-size:.84rem;font-weight:800;display:flex;align-items:center;gap:10px;box-shadow:var(--shadow)}
.flash{background:var(--green-soft);color:#15803d;border:1px solid #bbf7d0}
.err{background:var(--red-soft);color:#991b1b;border:1px solid #fecaca}

.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(15,23,42,.42);z-index:190;backdrop-filter:blur(3px)}
@media(max-width:1024px){
  .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .sidebar-overlay.open{display:block}
  .menu-toggle{display:flex}
  .content-area{padding:20px 16px}
}
@media(max-width:640px){
  html{font-size:14px}
  .topbar{height:58px;padding:0 12px}.content-area{padding:16px 10px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:10px}
}

.login-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(circle at top left,rgba(212,114,122,.25),transparent 24rem),linear-gradient(135deg,#fef0f2 0%,#fff7f5 48%,#fff 100%)}
.login-card{background:rgba(255,255,255,.96);border:1px solid var(--border);border-radius:22px;padding:32px;width:100%;max-width:410px;box-shadow:0 24px 70px rgba(47,64,110,.18)}
.login-brand{display:flex;align-items:center;gap:13px;margin-bottom:24px}
.login-brand .logo-icon{width:44px;height:44px;font-size:18px}
.login-brand h2{font-size:1.12rem;font-weight:800}.login-brand p{font-size:.76rem;color:var(--text3);font-weight:600;margin-top:2px}

@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.content-area>.card,.content-area>.table-card,.stat-card{animation:fadeUp .35s ease both}

/* Music card */
.music-item{display:flex;align-items:center;gap:12px;padding:14px;border:1px solid var(--border);border-radius:12px;background:var(--surface);margin-bottom:10px}
.music-item .mi-icon{width:44px;height:44px;border-radius:12px;background:var(--accent-soft);color:var(--accent2);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}
.music-item .mi-meta{flex:1;min-width:0}
.music-item .mi-meta b{display:block;font-size:.86rem;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.music-item .mi-meta small{font-size:.72rem;color:var(--text3)}
.music-item audio{height:32px;max-width:220px}
.thumb{width:80px;height:80px;object-fit:cover;border-radius:10px;border:1px solid var(--border)}
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
.gallery-item{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--border);aspect-ratio:1;background:var(--surface2)}
.gallery-item img{width:100%;height:100%;object-fit:cover}
.gallery-item .del{position:absolute;top:6px;right:6px;background:rgba(220,38,38,.92);color:#fff;border:none;width:28px;height:28px;border-radius:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;min-height:0;padding:0}