@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700&family=DM+Mono:wght@400;500&display=swap');

*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#F4F6FA;--surface:#FFFFFF;--surface2:#F0F2F7;
  --border:#E2E6EE;--border2:#CDD2DF;
  --text1:#1A1F2E;--text2:#5A6278;--text3:#8E96AC;
  --blue:#2563EB;--blue-bg:#EEF4FF;
  --green:#1A6B3A;--green-bg:#EAFAF0;
  --amber:#92420A;--amber-bg:#FFF5E6;
  --red:#B91C1C;--red-bg:#FEF2F2;
  --purple:#5B21B6;--purple-bg:#F3F0FF;
  --teal:#0F766E;--teal-bg:#E6FFFA;
  --radius:10px;--radius-sm:6px;
  --shadow:0 1px 3px rgba(0,0,0,0.08),0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:0 4px 12px rgba(0,0,0,0.10),0 2px 4px rgba(0,0,0,0.06);
}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--text1);font-size:14px;min-height:100vh;padding:20px;max-width:1400px;margin:0 auto}
h1{font-size:22px;font-weight:600;margin-bottom:4px;display:flex;align-items:center;gap:8px}
h2{font-size:16px;font-weight:600;margin-bottom:10px}
.subtitle{font-size:13px;color:var(--text2);margin-bottom:16px}
code{font-family:'DM Mono',monospace;background:var(--surface2);padding:1px 5px;border-radius:4px;font-size:12px}

/* Top nav */
.nav{display:flex;align-items:center;gap:14px;margin-bottom:16px;padding:8px 0;border-bottom:1px solid var(--border)}
.nav a{color:var(--text2);text-decoration:none;font-size:13px;font-weight:500;padding:6px 12px;border-radius:var(--radius-sm);transition:all .15s}
.nav a:hover{background:var(--surface2);color:var(--text1)}
.nav a.active{background:var(--blue-bg);color:var(--blue)}
.nav .spacer{flex:1}
.nav .status{font-size:11px;color:var(--text3)}

/* Cards */
.card{background:var(--surface);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);margin-bottom:14px}
.card-title{font-size:12px;font-weight:600;color:var(--text2);margin-bottom:10px;text-transform:uppercase;letter-spacing:.4px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.card-title small{font-size:10px;color:var(--text3);font-weight:400;text-transform:none;letter-spacing:0}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:6px;background:var(--blue);color:#fff;border:none;border-radius:var(--radius-sm);padding:9px 16px;font-family:inherit;font-size:13px;font-weight:500;cursor:pointer;transition:background .15s}
.btn:hover:not(:disabled){background:#1d4ed8}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.secondary{background:var(--surface);color:var(--text1);border:1px solid var(--border)}
.btn.secondary:hover:not(:disabled){background:var(--surface2)}
.btn.danger{background:var(--red)}
.btn.danger:hover:not(:disabled){background:#991b1b}

/* Inputs */
input[type=text],input[type=password],input[type=date],select{
  border:1px solid var(--border);background:var(--surface);color:var(--text1);
  font-family:inherit;font-size:13px;padding:8px 10px;border-radius:var(--radius-sm);outline:none;
  transition:border-color .15s;min-width:140px
}
input:focus,select:focus{border-color:var(--blue)}
label{font-size:11px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:.5px;display:block;margin-bottom:4px}

/* Upload zone */
.dropzone{background:var(--surface);border:1.5px dashed var(--border2);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;align-items:center;gap:10px;cursor:pointer;transition:all .15s}
.dropzone:hover,.dropzone.dragover{border-color:var(--blue);background:var(--blue-bg)}
.dropzone input{display:none}
.dropzone .hint{font-size:12px;color:var(--text3)}

/* Tables */
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th{text-align:left;font-size:11px;color:var(--text3);font-weight:600;text-transform:uppercase;letter-spacing:.4px;padding:8px 10px;border-bottom:1px solid var(--border)}
.table td{padding:8px 10px;border-bottom:.5px solid var(--border)}
.table tr:last-child td{border-bottom:none}
.table .num{font-family:'DM Mono',monospace;font-weight:600;text-align:right}

/* Toggles */
.tog-group{display:flex;gap:4px;flex-wrap:wrap}
.tog{padding:7px 13px;border-radius:var(--radius-sm);border:1px solid var(--border);font-size:12px;font-weight:500;cursor:pointer;background:var(--surface);color:var(--text2);transition:all .15s;font-family:inherit}
.tog:hover:not(:disabled){border-color:var(--border2);background:var(--surface2)}
.tog.on{background:var(--blue-bg);color:var(--blue);border-color:var(--blue)}
.tog:disabled{opacity:.45;cursor:not-allowed}

/* Metric cards */
.metrics{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-bottom:10px}
@media(max-width:900px){.metrics{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){.metrics{grid-template-columns:repeat(2,1fr)}}
.mc{background:var(--surface);border-radius:var(--radius);padding:12px 14px;box-shadow:var(--shadow)}
.mc-lbl{font-size:11px;color:var(--text3);margin-bottom:4px;font-weight:500;text-transform:uppercase;letter-spacing:.3px}
.mc-val{font-size:22px;font-weight:600;line-height:1;font-family:'DM Mono',monospace}
.mc-val.b-row{display:flex;align-items:baseline;gap:8px}
.mc-val.b-row .b{font-size:13px;color:var(--text3);font-weight:500}
.mc-sub{font-size:11px;color:var(--text3);margin-top:3px}
.mc-compare{font-size:11px;margin-top:4px;font-weight:500}
.mc-up{color:#15803d}.mc-dn{color:var(--red)}.mc-eq{color:var(--text3)}

/* Lists */
.list-row{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:.5px solid var(--border)}
.list-row:last-child{border:none}
.list-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.list-name{font-size:12px;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.list-bar-bg{flex:1.2;height:5px;background:var(--surface2);border-radius:3px;min-width:50px;position:relative;display:flex;align-items:center}
.list-bar-fill{height:5px;border-radius:3px;transition:width .4s}
.list-bar-fill.b{position:absolute;left:0;height:5px;border-radius:3px;opacity:.45}
.list-cnt{font-size:12px;font-weight:600;min-width:34px;text-align:right;font-family:'DM Mono',monospace}
.list-cnt.b{color:var(--purple);font-size:11px;min-width:28px}
.list-pct{font-size:11px;color:var(--text3);min-width:38px;text-align:right;font-family:'DM Mono',monospace}

/* Books */
.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:8px;margin-top:10px}
.book-item{background:var(--surface2);border-radius:var(--radius-sm);padding:10px 12px;display:flex;justify-content:space-between;align-items:center;gap:8px}
.book-name{font-size:12px;font-weight:500;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.book-cnt{font-size:16px;font-weight:700;color:var(--blue);font-family:'DM Mono',monospace}
.book-cnt.b{font-size:12px;color:var(--purple);margin-left:6px}

/* Charts */
.charts-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
@media(max-width:800px){.charts-row{grid-template-columns:1fr}}
.legend{display:flex;flex-wrap:wrap;gap:10px;font-size:11px;color:var(--text2);margin-bottom:8px}
.legend span{display:flex;align-items:center;gap:4px}
.dot{width:8px;height:8px;border-radius:2px;flex-shrink:0}

/* Profile */
.profile-bar{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--surface);border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow)}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--blue-bg);display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:var(--blue);flex-shrink:0}
.profile-name{font-size:15px;font-weight:600}
.profile-meta{font-size:12px;color:var(--text2);margin-top:2px}
.period-pill-wrap{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.period-pill{padding:4px 10px;border-radius:20px;font-size:11px;font-weight:600;background:var(--blue-bg);color:var(--blue)}
.period-pill.b{background:var(--purple-bg);color:var(--purple)}

.spinner{display:inline-block;width:14px;height:14px;border:2px solid var(--border);border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}

.empty-msg{font-size:13px;color:var(--text3);padding:18px 0;text-align:center}
.placeholder{text-align:center;padding:48px 0;color:var(--text3);font-size:14px}
.error{background:var(--red-bg);color:var(--red);padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:10px}
.success{background:var(--green-bg);color:var(--green);padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:10px}
.muted{color:var(--text3);font-size:12px}

footer{text-align:center;color:var(--text3);font-size:11px;padding:18px 0 8px}