/* ==========================================================================
   FuelNova Design System
   Grounded in the world of a petrol pump: fuel-brand green, gauge-amber,
   and a digital meter readout treatment for numbers.
   ========================================================================== */

:root {
    --pump-green: #0b3d2e;
    --pump-green-light: #145c46;
    --pump-green-pale: #e8f0ec;
    --gauge-amber: #f2a900;
    --gauge-amber-dark: #c98600;
    --ink: #1a2420;
    --concrete: #f6f5f2;
    --steel: #e2e5e3;
    --steel-dark: #c7ccc9;
    --white: #ffffff;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-card: 0 1px 2px rgba(26,36,32,.04), 0 4px 14px rgba(26,36,32,.06);
    --shadow-card-hover: 0 2px 4px rgba(26,36,32,.06), 0 10px 24px rgba(26,36,32,.10);
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-meter: 'JetBrains Mono', ui-monospace, monospace;
}

/* ---------- Base ---------- */
body {
    background: var(--concrete);
    color: var(--ink);
    font-family: var(--font-ui);
    font-size: .94rem;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-ui);
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.01em;
}

a { color: var(--pump-green); text-decoration: none; }
a:hover { color: var(--pump-green-light); }

/* Every number in the app reads like a meter/counter: tabular, monospace-adjacent */
.fs-3, .fs-4, .fs-5, td, th, .table td, .table th,
input[type="number"], .badge, .fw-bold {
    font-variant-numeric: tabular-nums;
}

/* ---------- Navbar ---------- */
.app-navbar {
    background: linear-gradient(135deg, var(--pump-green) 0%, #0e4536 100%);
    box-shadow: 0 2px 10px rgba(11,61,46,.18);
}
.app-navbar .navbar-brand {
    font-weight: 700;
    letter-spacing: .01em;
    font-size: 1.15rem;
}
.app-navbar .navbar-brand, .app-navbar .nav-link { color: var(--concrete) !important; }
.app-navbar .nav-link:hover { color: var(--gauge-amber) !important; }

.subnav {
    background: var(--white);
    border-bottom: 1px solid var(--steel);
    box-shadow: 0 1px 0 rgba(26,36,32,.02);
}
.subnav .nav-link {
    color: var(--ink);
    font-weight: 500;
    font-size: .87rem;
    padding: .5rem .1rem;
    position: relative;
    display: flex;
    align-items: center;
    gap: .4rem;
    opacity: .8;
    transition: opacity .15s ease, color .15s ease;
}
.subnav .nav-link:hover {
    opacity: 1;
    color: var(--pump-green);
}
.subnav .nav-link i { font-size: .95rem; }

.subnav .dropdown-toggle::after {
    margin-left: .3rem;
    vertical-align: .1em;
}
.subnav .dropdown-toggle:hover { color: var(--pump-green); }
.dropdown-menu {
    border: 1px solid var(--steel);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-card-hover);
    padding: .35rem;
    margin-top: .4rem;
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .87rem;
    font-weight: 500;
    border-radius: 6px;
    padding: .5rem .7rem;
    color: var(--ink);
}
.dropdown-item:hover, .dropdown-item:focus {
    background: var(--pump-green-pale);
    color: var(--pump-green);
}
.dropdown-item i { font-size: .95rem; width: 1.1rem; }

/* ---------- Cards ---------- */
.card {
    border: 1px solid var(--steel);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    transition: box-shadow .18s ease, transform .18s ease;
}
a.card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
    border-color: var(--steel-dark);
}
.card-header {
    background: var(--white);
    border-bottom: 1px solid var(--steel);
    font-weight: 600;
    font-size: .92rem;
    border-radius: var(--radius-md) var(--radius-md) 0 0 !important;
}

/* ---------- Signature: digital meter readout ---------- */
.meter-stat {
    background: linear-gradient(160deg, #142a22 0%, var(--pump-green) 100%);
    border-radius: var(--radius-md);
    padding: 1.15rem 1rem;
    box-shadow: inset 0 2px 8px rgba(0,0,0,.4), 0 1px 3px rgba(0,0,0,.12);
    border: 1px solid rgba(255,255,255,.06);
    height: 100%;
    text-align: center;
}
.meter-stat .meter-value {
    font-family: var(--font-meter);
    font-variant-numeric: tabular-nums;
    font-size: 1.85rem;
    font-weight: 600;
    letter-spacing: .01em;
    line-height: 1.15;
    color: var(--gauge-amber);
    text-shadow: 0 0 10px rgba(242,169,0,.35);
}
.meter-stat .meter-label {
    font-family: var(--font-ui);
    font-size: .68rem;
    text-transform: uppercase;
    letter-spacing: .09em;
    color: rgba(244,246,245,.68);
    margin-top: .3rem;
}

/* ---------- Buttons ---------- */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: .88rem;
    padding: .45rem 1rem;
    transition: all .15s ease;
}
.btn-primary {
    background: var(--pump-green);
    border-color: var(--pump-green);
}
.btn-primary:hover, .btn-primary:focus {
    background: var(--pump-green-light);
    border-color: var(--pump-green-light);
}
.btn-success {
    background: #1d7a4c;
    border-color: #1d7a4c;
}
.btn-success:hover { background: #166139; border-color: #166139; }
.btn-outline-primary {
    color: var(--pump-green);
    border-color: var(--pump-green);
}
.btn-outline-primary:hover {
    background: var(--pump-green);
    border-color: var(--pump-green);
}
.btn-outline-secondary {
    color: var(--ink);
    border-color: var(--steel-dark);
}
.btn-sm { font-size: .8rem; padding: .3rem .7rem; }

/* ---------- Tables ---------- */
.table {
    font-size: .89rem;
}
.table thead th {
    font-family: var(--font-ui);
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .06em;
    font-weight: 600;
    color: #5c6864;
    border-bottom: 2px solid var(--steel);
    background: var(--concrete);
}
.table td { vertical-align: middle; border-color: var(--steel); }
.table-hover tbody tr:hover { background: var(--pump-green-pale); }

/* ---------- Badges ---------- */
.badge {
    font-weight: 600;
    font-size: .72rem;
    letter-spacing: .02em;
    padding: .38em .65em;
    border-radius: 6px;
}
.badge.bg-success { background: #1d7a4c !important; }
.badge.bg-warning { background: var(--gauge-amber) !important; color: var(--ink) !important; }
.badge.bg-danger { background: #b3372c !important; }
.badge.bg-secondary { background: #6b7a75 !important; }
.badge.bg-info { background: #2f7f8f !important; }

/* ---------- Forms ---------- */
.form-control, .form-select {
    border-radius: var(--radius-sm);
    border-color: var(--steel-dark);
    font-size: .9rem;
}
.form-control:focus, .form-select:focus {
    border-color: var(--pump-green);
    box-shadow: 0 0 0 .2rem rgba(11,61,46,.12);
}
.form-control[readonly], .form-control:read-only {
    background-color: var(--steel);
    color: #5c6864;
    cursor: not-allowed;
}
.form-label {
    font-weight: 500;
    font-size: .85rem;
    color: #3a453f;
}

/* ---------- Alerts ---------- */
.alert {
    border-radius: var(--radius-sm);
    border: none;
    font-size: .89rem;
}
.alert-success { background: var(--pump-green-pale); color: var(--pump-green); }
.alert-danger { background: #fbe9e7; color: #8c2c22; }
.alert-warning { background: #fef3d9; color: #8a5c00; }
.alert-info { background: #e3f1f4; color: #205661; }

/* ---------- Dashboard quick-link tiles ---------- */
.quick-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .35rem;
    padding: 1.1rem .5rem;
    color: var(--ink) !important;
    text-align: center;
}
.quick-tile i {
    font-size: 1.35rem;
    color: var(--pump-green);
}
.quick-tile span {
    font-size: .78rem;
    font-weight: 500;
}

/* ---------- Print (unchanged behavior, relocated here) ---------- */
@media print {
    nav, footer, .no-print { display: none !important; }
    body { background: white !important; }
    .container { margin: 0 !important; padding: 0 !important; max-width: 100% !important; }
}