:root{
    --bg:#f4f7fb;
    --surface:#ffffff;
    --surface-soft:#f8fafc;
    --text:#172033;
    --muted:#667085;
    --line:#dfe5ee;
    --primary:#1d4ed8;
    --primary-dark:#173ea8;
    --danger:#b42318;
    --danger-bg:#fef3f2;
    --warning:#9a6700;
    --warning-bg:#fffaeb;
    --success:#067647;
    --success-bg:#ecfdf3;
    --shadow:0 14px 40px rgba(16,24,40,.08);
    --radius:16px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--text);background:var(--bg)}
button,input{font:inherit}
a{color:inherit}
.auth-body{min-height:100vh;background:linear-gradient(135deg,#eef4ff 0%,#f7f9fc 52%,#eef2f7 100%)}
.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{width:min(100%,460px);background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:32px;box-shadow:var(--shadow)}
.brand{display:flex;align-items:center;gap:12px}
.brand strong{display:block;font-size:17px}
.brand span{display:block;color:var(--muted);font-size:13px;margin-top:2px}
.brand-mark{width:48px;height:48px;display:grid;place-items:center;border-radius:13px;background:var(--primary);color:#fff;font-weight:800;font-size:14px;letter-spacing:.5px}
.brand-mark-small{width:38px;height:38px;border-radius:10px;font-size:12px}
.env-badge{display:inline-flex;margin-top:18px;padding:6px 9px;border-radius:999px;background:var(--warning-bg);color:var(--warning);font-size:11px;font-weight:800;letter-spacing:.6px}
.env-inline{margin:0}
.auth-heading{margin:28px 0 22px}
.auth-heading h1{font-size:28px;margin:0 0 8px;letter-spacing:-.4px}
.auth-heading p{margin:0;color:var(--muted);line-height:1.55}
.form-stack{display:grid;gap:16px}
.field label{display:block;font-size:13px;font-weight:750;margin-bottom:7px}
.field input{width:100%;min-height:48px;border:1px solid #cbd5e1;border-radius:11px;background:#fff;padding:10px 12px;color:var(--text);outline:none;transition:.15s}
.field input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(29,78,216,.10)}
.code-input{text-align:center;font-size:30px!important;font-weight:750;letter-spacing:9px}
.btn{border:0;border-radius:10px;min-height:44px;padding:10px 16px;font-weight:750;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-block{width:100%;min-height:50px}
.btn-ghost{background:#eef2f7;color:#344054;min-height:38px}
.alert{border-radius:10px;padding:11px 13px;margin:0 0 16px;font-size:14px;line-height:1.45}
.alert-danger{background:var(--danger-bg);color:var(--danger);border:1px solid #fecdca}
.alert-warning{background:var(--warning-bg);color:var(--warning);border:1px solid #fedf89}
.alert-success{background:var(--success-bg);color:var(--success);border:1px solid #abefc6}
.security-note{margin:20px 0 0;color:var(--muted);font-size:12px;text-align:center;line-height:1.45}
.link-back{display:block;margin-top:20px;text-align:center;color:var(--primary);font-size:14px;text-decoration:none}
.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar-inner{max-width:1440px;margin:auto;height:68px;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.topbar-brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.topbar-brand strong{display:block;font-size:15px}
.topbar-brand small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.topbar-actions{display:flex;align-items:center;gap:10px}
.user-chip{font-size:13px;color:#344054;max-width:220px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.page{max-width:1440px;margin:0 auto;padding:28px 22px 48px}
.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.page-heading h1{margin:0 0 6px;font-size:29px;letter-spacing:-.5px}
.page-heading p{margin:0;color:var(--muted)}
.session-note{font-size:12px;color:var(--muted);white-space:nowrap}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}
.stat-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px}
.stat-card span{display:block;color:var(--muted);font-size:13px;margin-bottom:8px}
.stat-card strong{font-size:30px;letter-spacing:-.5px}
.stat-danger{border-left:4px solid var(--danger)}
.stat-warning{border-left:4px solid var(--warning)}
.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.panel-head{padding:19px 20px;border-bottom:1px solid var(--line)}
.panel-head h2{font-size:18px;margin:0 0 4px}
.panel-head p{margin:0;color:var(--muted);font-size:13px}
.trip-list{display:grid}
.trip-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 20px;border-bottom:1px solid #edf0f4}
.trip-row:last-child{border-bottom:0}
.trip-main{min-width:0;display:grid;gap:3px}
.trip-main strong{font-size:14px}
.trip-main span,.trip-main small{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.trip-main span{font-size:13px}.trip-main small{font-size:11px}
.trip-meta{display:grid;justify-items:end;gap:6px;flex:0 0 auto}
.trip-meta small{color:var(--muted);font-size:11px}
.badge{display:inline-flex;padding:5px 8px;border-radius:999px;font-size:11px;font-weight:800}
.badge-danger{background:var(--danger-bg);color:var(--danger)}
.badge-warning{background:var(--warning-bg);color:var(--warning)}
.badge-success{background:var(--success-bg);color:var(--success)}
.empty-state{padding:32px 20px;color:var(--muted);text-align:center;font-size:14px}
@media(max-width:1000px){
    .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .dashboard-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
    .auth-shell{padding:14px}
    .auth-card{padding:24px 18px;border-radius:18px}
    .auth-heading h1{font-size:25px}
    .topbar-inner{padding:0 14px;height:62px}
    .topbar-brand small,.user-chip,.env-inline{display:none}
    .page{padding:20px 14px 36px}
    .page-heading{display:block}
    .page-heading h1{font-size:24px}
    .session-note{display:block;margin-top:8px}
    .stats-grid{grid-template-columns:1fr 1fr;gap:10px}
    .stat-card{padding:14px}
    .stat-card strong{font-size:25px}
    .trip-row{align-items:flex-start;padding:14px;gap:10px}
    .trip-meta{max-width:45%}
    .trip-meta small{text-align:right}
}
@media(max-width:390px){
    .stats-grid{grid-template-columns:1fr}
}