:root {
  --bg: #0F1B3D;
  --card: #192A56;
  --card-border: #2D4682;
  --accent: #2962FF;
  --accent-hover: #1E50D9;
  --text: #C8D2E6;
  --text2: #8CB4DC;
  --text-muted: #5A7099;
  --success: #27AE60;
  --warning: #F39C12;
  --danger: #DC3545;
  --white: #FFFFFF;
  --nav-h: 64px;
  --top-h: 52px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; overflow-x: hidden; }
.hidden { display: none !important; }
.page { display: none; } .page.active { display: flex; }

/* ---- Login ---- */
#page-login { justify-content: center; align-items: center; min-height: 100vh; padding: 20px; }
.login-wrap { text-align: center; width: 100%; max-width: 340px; }
.login-icon { margin-bottom: 16px; }
.login-wrap h1 { font-size: 28px; color: var(--white); margin-bottom: 4px; }
.login-sub { color: var(--text2); margin-bottom: 28px; font-size: 14px; }
#login-code { width: 100%; padding: 14px 16px; border: 1px solid var(--card-border); border-radius: 10px; background: var(--card); color: var(--white); font-size: 16px; text-align: center; outline: none; margin-bottom: 12px; }
#login-code:focus { border-color: var(--accent); }
#login-code::placeholder { color: var(--text-muted); }
#login-btn { width: 100%; padding: 14px; border: none; border-radius: 10px; background: var(--accent); color: #fff; font-size: 16px; font-weight: 600; cursor: pointer; }
#login-btn:active { background: var(--accent-hover); }
#login-error { color: var(--danger); margin-top: 12px; font-size: 13px; min-height: 20px; }
.qr-section { margin-top: 24px; }
.qr-label { color: var(--text-muted); font-size: 12px; margin-bottom: 10px; }
#qr-code { display: inline-block; padding: 10px; background: #fff; border-radius: 10px; }
#qr-code img { display: block; }

/* ---- App Shell ---- */
#app-shell { display: flex; flex-direction: column; min-height: 100vh; }
#top-bar { display: flex; align-items: center; justify-content: space-between; padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--card-border); height: var(--top-h); position: sticky; top: 0; z-index: 10; }
#page-title { font-size: 18px; color: var(--white); }
#user-badge { font-size: 11px; padding: 4px 10px; background: var(--accent); color: #fff; border-radius: 12px; }

#content { flex: 1; overflow-y: auto; padding: 12px; padding-bottom: calc(var(--nav-h) + 16px); }
.pg { display: none; flex-direction: column; gap: 12px; } .pg.active { display: flex; }

/* ---- Bottom Nav ---- */
#bottom-nav { display: flex; position: fixed; bottom: 0; left: 0; right: 0; height: var(--nav-h); background: var(--card); border-top: 1px solid var(--card-border); z-index: 20; padding-bottom: env(safe-area-inset-bottom); }
.nav-item { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; text-decoration: none; color: var(--text-muted); font-size: 11px; transition: color .2s; }
.nav-item.active { color: var(--accent); }
.nav-item svg { width: 22px; height: 22px; }

/* ---- Filter Bar ---- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 8px 0; }
.filter-bar input[type="date"], .filter-bar select { padding: 8px 10px; border: 1px solid var(--card-border); border-radius: 8px; background: var(--card); color: var(--text); font-size: 13px; max-width: 140px; }
.filter-sep { color: var(--text-muted); font-size: 12px; }
.btn-sm { padding: 8px 16px; border: none; border-radius: 8px; background: var(--accent); color: #fff; font-size: 13px; font-weight: 600; cursor: pointer; white-space: nowrap; }
.btn-sm:active { background: var(--accent-hover); }
.btn-outline { background: transparent; border: 1px solid var(--accent); color: var(--accent); }

/* ---- Cards Grid ---- */
.cards-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.stat-card { background: var(--card); border: 1px solid var(--card-border); border-radius: 12px; padding: 14px; }
.stat-card .label { font-size: 11px; color: var(--text2); text-transform: uppercase; letter-spacing: .5px; }
.stat-card .value { font-size: 24px; font-weight: 700; color: var(--white); margin-top: 4px; }
.stat-card .value.green { color: var(--success); }
.stat-card .value.red { color: var(--danger); }
.stat-card .value.orange { color: var(--warning); }
.stat-card .value.blue { color: var(--accent); }

/* ---- Chart ---- */
.chart-wrap { background: var(--card); border: 1px solid var(--card-border); border-radius: 12px; padding: 12px; }
.chart-wrap canvas { width: 100% !important; max-height: 280px; }

/* ---- Tables ---- */
.section-title { font-size: 14px; color: var(--text2); margin-top: 4px; }
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--card-border); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; font-size: 12px; white-space: nowrap; }
th { background: rgba(0,0,0,.2); padding: 10px 12px; text-align: left; color: var(--text2); font-weight: 600; position: sticky; top: 0; }
td { padding: 8px 12px; border-top: 1px solid var(--card-border); }
tr:hover td { background: rgba(255,255,255,.03); }

/* ---- Stats Tabs ---- */
.stats-tabs, .report-tabs { display: flex; gap: 4px; overflow-x: auto; padding-bottom: 4px; }
.stab, .rtab { padding: 8px 16px; border: 1px solid var(--card-border); border-radius: 8px; background: transparent; color: var(--text2); font-size: 13px; cursor: pointer; white-space: nowrap; }
.stab.active, .rtab.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ---- Reports ---- */
.row-count { font-size: 12px; color: var(--text-muted); }

/* ---- Responsive ---- */
@media (min-width: 600px) {
  .cards-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 900px) {
  .cards-grid { grid-template-columns: repeat(5, 1fr); }
  .chart-wrap canvas { max-height: 350px; }
}

/* ---- Loading ---- */
.loading { text-align: center; padding: 40px; color: var(--text-muted); }
.spin { display: inline-block; width: 24px; height: 24px; border: 3px solid var(--card-border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }