:root{
  --bg:#f2f6fb;
  --bg-soft:#eaf1fb;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#64748b;
  --accent:#4d8fe6;
  --accent-2:#5ac9ac;
  --border:#dbe3ee;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Arial,sans-serif;background:linear-gradient(180deg,#f8fbff 0%,var(--bg) 100%);color:var(--text)}
.layout{display:flex;min-height:100vh}
.layout-auth{display:block}
.sidebar{width:250px;background:rgba(234,241,251,.95);padding:20px;border-right:1px solid var(--border);backdrop-filter:blur(6px)}
.brand{display:flex;flex-direction:column;gap:8px}
.brand-sidebar{margin-bottom:16px}
.brand-logo{max-width:220px;width:100%;height:auto;object-fit:contain}
.sidebar h2{margin:0;font-size:1.2rem;color:#334155}
.sidebar nav{display:flex;flex-direction:column;gap:8px}
.sidebar a{color:#123;text-decoration:none;padding:10px 12px;border-radius:10px;transition:.2s}
.sidebar a:hover{background:#d9e8ff;transform:translateX(2px)}
.content{flex:1 1 auto;min-width:0;overflow-x:auto;padding:24px}
.content-auth{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px;background:radial-gradient(circle at 20% 10%,#e7f6ff 0%,#f7fbff 35%,#eff5fb 100%)}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;margin-bottom:16px;box-shadow:0 10px 35px rgba(31,41,55,.06)}
.narrow{max-width:520px;width:100%}
.login-card{padding:32px}
.login-card h1{margin:0;font-size:1.6rem}
.muted{margin:0;color:var(--muted)}
.brand-login{gap:12px;margin-bottom:10px}
.auth-form{margin-top:18px;display:flex;flex-direction:column;gap:14px}
.auth-form label{margin:0}
.auth-form .input-icon + label{margin-top:2px}
.auth-form button{margin-top:6px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
label{display:block;font-weight:600;margin:10px 0 6px}
input,select,button{width:100%;padding:10px;border:1px solid var(--border);border-radius:10px;font-size:14px}
.input-icon{display:flex;align-items:center;gap:8px;padding:0 10px;border:1px solid var(--border);border-radius:10px;background:#fff}
.input-icon input{border:none;padding:11px 2px;outline:none;background:transparent}
.input-icon:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(77,143,230,.16)}
button,.btn{display:inline-block;width:auto;background:linear-gradient(90deg,var(--accent) 0%,#6aa4ef 100%);color:#fff;border:none;text-decoration:none;padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:600}
.alert{padding:10px;border-radius:8px}.error{background:#fee2e2;color:#7f1d1d}.success{background:#dcfce7;color:#14532d}
.table-wrap{overflow:auto}
.table-scroll-top{overflow-x:auto;overflow-y:hidden;margin:0 0 10px 0}
.table-scroll-top-inner{height:1px}
table{width:100%;border-collapse:collapse;font-size:14px}th,td{border-bottom:1px solid var(--border);padding:8px;text-align:left;white-space:nowrap}
.filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:8px;align-items:end}
.bulk-actions{display:flex;gap:8px;align-items:center;margin-bottom:10px;flex-wrap:wrap}
.pagination a{padding:6px 10px;background:#fff;border:1px solid var(--border);border-radius:6px;margin-right:4px;text-decoration:none}.pagination .active{background:#dbeafe}
pre{white-space:pre-wrap;word-break:break-word;background:#f8fafc;padding:12px;border-radius:8px;border:1px solid var(--border)}
.home-hero{background:url('/assets/images/background.jpg') center/cover no-repeat;border-radius:20px;min-height:210px;margin-bottom:16px;position:relative;overflow:hidden}
.home-hero::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,23,42,.55),rgba(59,130,246,.35))}
.home-hero-overlay{position:relative;color:#fff;padding:28px;max-width:560px}
.home-hero h1{margin:0 0 8px 0;font-size:2rem}
.home-hero p{margin:0;line-height:1.5}
.reserved-upload-subtitle{margin-top:0}
.reserved-files-toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:10px;flex-wrap:wrap}
.reserved-check-label{display:inline-flex;align-items:center;gap:10px;font-weight:600;margin:0}
.reserved-check-label input{width:18px;height:18px;margin:0}
.reserved-files-count{font-size:13px;color:var(--muted)}
.reserved-files-list{max-height:280px;overflow:auto;border:1px solid var(--border);border-radius:10px;padding:4px 10px;background:#fbfdff}
.reserved-file-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;padding:10px 4px;border-bottom:1px solid #e8edf5;margin:0}
.reserved-file-item:last-child{border-bottom:none}
.reserved-file-checkbox{width:18px;height:18px;margin:0}
.reserved-file-name{font-weight:600;word-break:break-word}
.reserved-file-meta{color:var(--muted);display:flex;gap:8px;align-items:center;white-space:nowrap}
.reserved-file-meta span + span::before{content:'·';margin-right:8px}
.reserved-files-actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
@media (max-width: 900px){
  .layout{flex-direction:column}
  .sidebar{width:100%;padding:14px}
  .content{padding:16px}
  .home-hero{min-height:180px}
}
@media (max-width: 640px){
  .login-card{padding:22px}
  .brand-logo{max-width:170px}
  .home-hero h1{font-size:1.5rem}
  .reserved-file-item{grid-template-columns:auto minmax(0,1fr);grid-template-areas:'check name' '. meta';row-gap:6px}
  .reserved-file-checkbox{grid-area:check}
  .reserved-file-name{grid-area:name}
  .reserved-file-meta{grid-area:meta;white-space:normal;flex-wrap:wrap}
  .reserved-file-meta span + span::before{content:'';margin:0}
}

/* Visual refresh: sidebar, page transitions and analytics dashboard */
.sidebar{
  position:sticky;
  top:0;
  height:100vh;
  width:280px;
  flex:0 0 280px;
  padding:22px 18px;
  color:#e5edff;
  background:
    radial-gradient(circle at 16% 12%,rgba(90,201,172,.42),transparent 28%),
    radial-gradient(circle at 100% 0%,rgba(77,143,230,.35),transparent 32%),
    linear-gradient(165deg,#0f172a 0%,#172554 52%,#0e7490 100%);
  border-right:none;
  box-shadow:16px 0 42px rgba(15,23,42,.18);
  overflow:hidden;
}
.sidebar::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.11),transparent 38%,rgba(255,255,255,.05));
  pointer-events:none;
}
.brand-sidebar{position:relative;align-items:flex-start;margin-bottom:28px;padding:12px;border-radius:20px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14)}
.sidebar h2{color:#fff;font-size:1.25rem;letter-spacing:.02em}
.sidebar nav{position:relative;gap:10px}
.sidebar a{
  display:flex;
  align-items:center;
  gap:12px;
  color:#dbeafe;
  padding:13px 14px;
  border:1px solid rgba(255,255,255,.09);
  border-radius:15px;
  background:rgba(255,255,255,.06);
  box-shadow:0 12px 24px rgba(15,23,42,.08);
  animation:navItemIn .42s ease both;
}
.sidebar a:nth-child(2){animation-delay:.04s}.sidebar a:nth-child(3){animation-delay:.08s}.sidebar a:nth-child(4){animation-delay:.12s}.sidebar a:nth-child(5){animation-delay:.16s}.sidebar a:nth-child(6){animation-delay:.2s}
.sidebar a span{display:grid;place-items:center;width:28px;height:28px;border-radius:10px;background:rgba(255,255,255,.13)}
.sidebar a:hover,.sidebar a.active{color:#fff;background:linear-gradient(90deg,rgba(77,143,230,.96),rgba(90,201,172,.9));transform:translateX(5px);border-color:rgba(255,255,255,.34);box-shadow:0 18px 30px rgba(14,116,144,.22)}
.content{animation:contentFadeIn .38s ease both}

.metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-bottom:16px}
.metric-card{display:flex;gap:14px;align-items:center;margin-bottom:0;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%)}
.metric-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,rgba(77,143,230,.16),rgba(90,201,172,.2));font-size:1.35rem}
.metric-label{margin:0;color:var(--muted);font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.metric-card strong{display:block;margin:3px 0;font-size:1.55rem;color:#0f172a}
.metric-card small{color:var(--muted)}
.dashboard-hero{box-shadow:0 24px 60px rgba(30,64,175,.18)}
.eyebrow{display:inline-block;color:#60a5fa;font-size:.75rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}
.analytics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:16px;margin-bottom:16px}
.chart-card{margin-bottom:0;overflow:hidden;position:relative}
.chart-card::after{content:'';position:absolute;right:-36px;top:-36px;width:120px;height:120px;border-radius:50%;background:rgba(77,143,230,.08)}
.section-title{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:14px}
.section-title h3{margin:0;color:#0f172a}.section-title strong{font-size:1.6rem;color:#1d4ed8}
.pie-layout{display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.pie-chart{width:164px;height:164px;border-radius:50%;position:relative;box-shadow:inset 0 0 0 1px rgba(15,23,42,.06),0 18px 38px rgba(15,23,42,.13)}
.pie-chart::after{content:'';position:absolute;inset:34px;border-radius:50%;background:#fff;box-shadow:inset 0 0 0 1px #e2e8f0}
.chart-legend{display:flex;flex:1;min-width:180px;flex-direction:column;gap:10px}
.chart-legend div{display:grid;grid-template-columns:auto 1fr;gap:8px 10px;align-items:center;color:#334155;font-weight:700}
.chart-legend span{width:12px;height:12px;border-radius:999px}.chart-legend strong{grid-column:2;color:#64748b;font-size:.88rem;font-weight:600}
.error-ranking{display:flex;flex-direction:column;gap:12px}.error-row{display:grid;grid-template-columns:minmax(160px,1.2fr) minmax(120px,2fr) auto;gap:12px;align-items:center}.error-row span{font-weight:700;color:#334155;overflow:hidden;text-overflow:ellipsis}.error-row div{height:12px;border-radius:999px;background:#e2e8f0;overflow:hidden}.error-row i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#4d8fe6,#5ac9ac)}.error-row strong{color:#0f172a}

@keyframes navItemIn{from{opacity:0;transform:translateX(-14px)}to{opacity:1;transform:translateX(0)}}
@keyframes contentFadeIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}

@media (max-width: 900px){
  .sidebar{position:relative;width:100%;flex-basis:auto;height:auto;border-radius:0 0 26px 26px}
  .sidebar nav{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
  .sidebar a:hover,.sidebar a.active{transform:translateY(-2px)}
}
@media (max-width: 640px){
  .pie-layout{justify-content:center}.pie-chart{width:138px;height:138px}.pie-chart::after{inset:29px}.error-row{grid-template-columns:1fr;gap:6px}
}