:root {
  --ink-900: #1a2036; --ink-800: #232a42; --ink-700: #2c3450; --ink-600: #374057;
  --ink-500: #4a5470; --ink-400: #69748e; --ink-300: #9aa4b8; --ink-200: #c7cdd9;
  --ink-100: #e7e9ee; --ink-50: #f4f5f7;
  --gold-700: #8a6423; --gold-600: #a97d2c; --gold-500: #c99a3d; --gold-300: #e7c374; --gold-50: #fdf8ee;
  --moss-600: #2f6049; --moss-500: #3d7a5d;
  --rust-600: #963a30; --rust-500: #b4453a;
  --font-display: "Georgia", "Times New Roman", serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--ink-50); color: var(--ink-900); font-family: var(--font-body); font-size: 14px; }
a { color: inherit; text-decoration: none; }
.tabular { font-variant-numeric: tabular-nums; }

/* Layout */
.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: 250px; flex-shrink: 0; background: var(--ink-900); color: var(--ink-200); min-height: 100vh; position: sticky; top: 0; display: flex; flex-direction: column; }
.sidebar-brand { padding: 22px 20px; border-bottom: 1px solid rgba(255,255,255,.1); }
.sidebar-brand .name { font-family: var(--font-display); color: #fff; font-size: 20px; }
.sidebar-brand .tag { font-size: 11px; color: var(--ink-400); font-style: italic; margin-top: -2px; }
.sidebar-nav { flex: 1; overflow-y: auto; padding: 14px 10px; }
.sidebar-nav a { display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 8px; color: var(--ink-300); font-size: 14px; margin-bottom: 2px; }
.sidebar-nav a.active, .sidebar-nav a:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar-foot { border-top: 1px solid rgba(255,255,255,.1); padding: 14px 18px; font-size: 12px; }
.sidebar-foot .who { color: #fff; font-size: 13px; margin: 2px 0 8px; }
.sidebar-foot a { color: var(--ink-300); }
.sidebar-foot a:hover { color: var(--gold-500); }
.main { flex: 1; min-width: 0; }

.topbar { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between; background: rgba(244,245,247,.9); backdrop-filter: blur(6px); border-bottom: 1px solid var(--ink-100); padding: 16px 24px; }
.topbar h1 { font-family: var(--font-display); font-size: 21px; margin: 0; }
.topbar p { margin: 3px 0 0; color: var(--ink-500); font-size: 13px; }
.content { padding: 24px; }

/* Cards / panels */
.card { background: #fff; border: 1px solid var(--ink-100); border-radius: 12px; box-shadow: 0 1px 0 rgba(17,21,36,.06), 0 8px 24px -12px rgba(17,21,36,.18); }
.card-pad { padding: 20px; }
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }
.kpi { background: #fff; border: 1px solid var(--ink-100); border-radius: 12px; padding: 16px; box-shadow: 0 1px 0 rgba(17,21,36,.06), 0 8px 24px -12px rgba(17,21,36,.18); }
.kpi .label { font-size: 12px; color: var(--ink-400); font-weight: 500; }
.kpi .value { font-family: var(--font-display); font-size: 26px; margin-top: 6px; }
.kpi .value.warn { color: var(--rust-600); }
.kpi .value.good { color: var(--moss-600); }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead tr { background: rgba(244,245,247,.6); text-align: left; }
th { padding: 12px 20px; font-size: 12px; color: var(--ink-400); font-weight: 500; }
td { padding: 12px 20px; border-top: 1px solid var(--ink-100); color: var(--ink-700); }
tbody tr:hover { background: rgba(244,245,247,.5); }
.table-wrap { overflow: hidden; border-radius: 12px; }

/* Badges */
.badge { display: inline-flex; align-items: center; border-radius: 999px; padding: 3px 10px; font-size: 12px; font-weight: 500; text-transform: capitalize; }
.badge-good { background: rgba(61,122,93,.1); color: var(--moss-600); }
.badge-warn { background: rgba(201,154,61,.15); color: var(--gold-700); }
.badge-neutral { background: var(--ink-100); color: var(--ink-500); }
.badge-bad { background: rgba(180,69,58,.1); color: var(--rust-600); }

/* Buttons / forms */
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 8px; padding: 9px 16px; font-size: 14px; font-weight: 500; border: 1px solid transparent; cursor: pointer; }
.btn-primary { background: var(--ink-900); color: #fff; }
.btn-primary:hover { background: var(--ink-800); }
.btn-outline { background: #fff; border-color: var(--ink-200); color: var(--ink-700); }
.btn-outline:hover { border-color: var(--ink-400); }
.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-size: 13px; color: var(--ink-500); margin-bottom: 5px; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 9px 12px; border: 1px solid var(--ink-200); border-radius: 8px; font-size: 14px; font-family: inherit; background: #fff;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { outline: 2px solid var(--gold-300); border-color: var(--gold-500); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.alert { border-radius: 8px; padding: 10px 14px; font-size: 13px; margin-bottom: 16px; }
.alert-error { background: rgba(180,69,58,.08); color: var(--rust-600); border: 1px solid rgba(180,69,58,.25); }
.alert-success { background: rgba(61,122,93,.08); color: var(--moss-600); border: 1px solid rgba(61,122,93,.25); }

/* Login */
.login-shell { min-height: 100vh; display: grid; grid-template-columns: 420px 1fr; }
@media (max-width: 900px) { .login-shell { grid-template-columns: 1fr; } .login-hero { display: none; } }
.login-hero { background: var(--ink-900); color: #fff; padding: 44px; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; }
.login-hero .headline { font-family: var(--font-display); font-size: 30px; line-height: 1.3; }
.login-hero .sub { color: var(--ink-300); font-size: 13px; max-width: 320px; margin-top: 14px; }
.login-form-wrap { display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.login-form { width: 100%; max-width: 380px; }
.login-form h1 { font-family: var(--font-display); font-size: 22px; margin-bottom: 6px; }
.login-form p.sub { color: var(--ink-500); font-size: 13px; margin-bottom: 24px; }
.demo-creds { margin-top: 20px; font-size: 12px; color: var(--ink-400); background: var(--ink-50); border-radius: 8px; padding: 12px 14px; }
.demo-creds code { background: #fff; padding: 1px 5px; border-radius: 4px; border: 1px solid var(--ink-100); }

/* Field / mobile */
.field-shell { max-width: 480px; margin: 0 auto; background: var(--ink-50); min-height: 100vh; padding-bottom: 40px; }
.field-header { background: var(--ink-900); color: #fff; padding: 26px 20px 34px; border-radius: 0 0 28px 28px; }
.field-header .greet { font-size: 12px; color: var(--ink-300); }
.field-header .name { font-family: var(--font-display); font-size: 20px; margin-top: 2px; }
.field-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 18px; }
.field-stat { background: rgba(255,255,255,.1); border-radius: 12px; padding: 12px 14px; }
.field-stat .l { font-size: 11px; color: var(--ink-300); }
.field-stat .v { font-family: var(--font-display); font-size: 22px; margin-top: 3px; }
.route-list { padding: 0 18px; margin-top: 20px; }
.route-stop { background: #fff; border: 1px solid var(--ink-100); border-radius: 12px; padding: 14px; margin-bottom: 10px; box-shadow: 0 1px 0 rgba(17,21,36,.06), 0 8px 24px -12px rgba(17,21,36,.18); }
.route-stop .top { display: flex; justify-content: space-between; align-items: flex-start; }
.route-stop .outlet { font-weight: 600; }
.route-stop .dist { font-size: 12px; color: var(--ink-400); margin-top: 2px; }
.field-btn { width: 100%; margin-top: 12px; background: var(--ink-900); color: #fff; border: none; border-radius: 8px; padding: 11px; font-size: 14px; }

.empty-state { border: 1px dashed var(--ink-200); background: #fff; border-radius: 12px; padding: 50px 20px; text-align: center; color: var(--ink-500); font-size: 13px; }