/*
    Auth pages (sign in, forgotten password, reset password).

    This shell is worn by four different brands, so it deliberately has no strong
    opinion of its own: the brand is the only colour on the page and everything else
    is neutral. --brand / --brand-ink are injected server-side by _BrandingHead.cshtml.

    Loaded only by _AuthLayout.cshtml. Kept out of site.css on purpose — that file has
    a hand-maintained site.scss twin with no build step wired up, so anything added
    there has to be written twice and will drift.
*/

/* This layout does not load Bootstrap, so auth.css stands alone. */
.auth-page *,
.auth-page *::before,
.auth-page *::after {
    box-sizing: border-box;
}

.auth-page {
    --surface: #f4f5f7;
    --card: #ffffff;
    --border: #e2e5ea;
    --ink: #14171c;
    --ink-muted: #5b6472;
    --ink-faint: #8a929e;
    --danger: #b3261e;

    min-height: 100vh;
    margin: 0;
    background-color: var(--surface);
    /* Brand-tinted wash: each tenant's page reads differently at a glance even though
       the chrome is identical. Degrades to the flat surface colour if color-mix is
       unsupported. */
    background-image:
        radial-gradient(60rem 40rem at 50% -10%,
            color-mix(in srgb, var(--brand) 12%, transparent),
            transparent 70%);
    background-repeat: no-repeat;
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

.auth-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem 3rem;
}

.auth-card {
    position: relative;
    width: 100%;
    max-width: 25rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 1px 2px rgba(20, 23, 28, .04),
                0 12px 32px -12px rgba(20, 23, 28, .18);
    overflow: hidden;
}

/* The one piece of brand colour in the chrome. Brands that carry a full logo band
   below it (Tracco, CargoClick, UserChecks) render it in the same colour, so it reads
   as part of the band; brands without one (Riccom) get it as a lone brand accent. */
.auth-card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: var(--brand);
    z-index: 1;
}

.auth-card-body {
    padding: 1.5rem 2rem 2rem;
}

/* ---------- brand lockup ---------- */

.auth-brand {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.875rem 2rem 0;
}

/* Logo artwork with its own solid background sits on a matching band across the head
   of the card. Colour comes from LogoBackground in appsettings, inline per brand. */
.auth-brand--band {
    padding: 1.5rem 2rem;
}

/* Remote logo from branding.riccom.cloud. If it fails to load the alt text stands in,
   so no JS error handler is needed (and none would survive the CSP). */
.auth-brand img {
    max-width: 190px;
    max-height: 56px;
    width: auto;
    height: auto;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--ink);
}

/* Shown for brands with no artwork on branding.riccom.cloud yet. */
.auth-wordmark {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -.02em;
    color: var(--ink);
    padding-bottom: .375rem;
    border-bottom: 3px solid var(--brand);
}

/* On a coloured band the underline would be invisible and dark ink can fail contrast,
   so the wordmark switches to the brand's own text colour. */
.auth-brand--band .auth-wordmark {
    color: var(--brand-ink);
    padding-bottom: 0;
    border-bottom: none;
}

/* ---------- headings ---------- */

.auth-heading {
    font-size: 1.375rem;
    font-weight: 650;
    letter-spacing: -.015em;
    line-height: 1.25;
    margin: 0 0 .375rem;
}

.auth-sub {
    font-size: .875rem;
    color: var(--ink-muted);
    margin: 0 0 1.5rem;
}

/* ---------- form ---------- */

.auth-page .form-group,
.auth-page .mb-3 {
    margin-bottom: 1rem;
}

.auth-page label,
.auth-page .form-label {
    display: block;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: .375rem;
}

.auth-page .form-control {
    display: block;
    width: 100%;
    height: auto;
    padding: .625rem .75rem;
    font-size: .9375rem;
    line-height: 1.4;
    color: var(--ink);
    background-color: #fff;
    border: 1px solid var(--border);
    border-radius: 7px;
    transition: border-color .12s ease, box-shadow .12s ease;
}

.auth-page .form-control::placeholder {
    color: var(--ink-faint);
}

.auth-page .form-control:hover {
    border-color: #cdd3db;
}

/* Focus must not rely on the brand hue — Tracco amber on white is ~1.8:1. A dark
   outline carries the visibility, the brand tint is only a halo. */
.auth-page .form-control:focus,
.auth-page .btn:focus-visible,
.auth-page a:focus-visible,
.auth-page .form-check-input:focus-visible {
    outline: 2px solid var(--ink);
    outline-offset: 1px;
    border-color: var(--ink);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--brand) 35%, transparent);
}

.auth-page .form-check {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: 0;
    margin-bottom: 1.25rem;
}

.auth-page .form-check-input {
    width: 1rem;
    height: 1rem;
    margin: 0;
    accent-color: var(--brand);
    flex: none;
}

.auth-page .form-check-label {
    font-size: .875rem;
    font-weight: 400;
    color: var(--ink-muted);
    margin: 0;
}

/* ---------- buttons ---------- */

.auth-page .btn {
    display: block;
    width: 100%;
    padding: .6875rem 1rem;
    font-size: .9375rem;
    font-weight: 600;
    line-height: 1.4;
    /* Several of these are anchors, not buttons. */
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: 7px;
    cursor: pointer;
    transition: filter .12s ease, background-color .12s ease;
}

.auth-page .btn + .btn {
    margin-top: .625rem;
}

.auth-page .btn-primary,
.auth-page .btn-primary:not(:disabled):not(.disabled):active {
    background-color: var(--brand);
    border-color: var(--brand);
    color: var(--brand-ink);
}

.auth-page .btn-primary:hover {
    background-color: var(--brand);
    border-color: var(--brand);
    color: var(--brand-ink);
    filter: brightness(.94);
}

.auth-page .btn-secondary,
.auth-page .btn-secondary:not(:disabled):not(.disabled):active {
    background-color: #fff;
    border-color: var(--border);
    color: var(--ink);
}

.auth-page .btn-secondary:hover {
    background-color: #f7f8fa;
    border-color: #cdd3db;
    color: var(--ink);
}

/* ---------- links ---------- */

.auth-links {
    margin-top: 1.125rem;
    text-align: center;
}

.auth-page .auth-links a {
    font-size: .875rem;
    color: var(--ink-muted);
    text-decoration: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1px;
}

.auth-page .auth-links a:hover {
    color: var(--ink);
    border-bottom-color: var(--ink-faint);
}

/* ---------- divider ---------- */

.auth-divider {
    display: flex;
    align-items: center;
    gap: .875rem;
    margin: 1.75rem 0 1.25rem;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--ink-faint);
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* ---------- external providers ---------- */

.auth-page .auth-providers {
    list-style: none;
    padding: 0;
    margin: 0;
}

.auth-page .auth-providers li {
    display: block;
}

.auth-page .auth-providers li + li {
    margin-top: .625rem;
}

/* ---------- alerts ---------- */

.auth-page .alert {
    padding: .75rem .875rem;
    margin-bottom: 1.25rem;
    font-size: .875rem;
    border: 1px solid transparent;
    border-radius: 7px;
}

.auth-page .alert strong {
    display: block;
    margin-bottom: .125rem;
}

.auth-page .alert p:last-child {
    margin-bottom: 0;
}

.auth-page .alert-danger {
    background-color: #fdf2f1;
    border-color: #f3d3d0;
    color: var(--danger);
}

.auth-page .alert-info {
    background-color: #f4f6f8;
    border-color: var(--border);
    color: var(--ink-muted);
}

.auth-page .alert-warning {
    background-color: #fdf8ec;
    border-color: #f0e2c2;
    color: #7a5a12;
}

/* asp-validation-summary renders a <ul> inside _ValidationSummary.cshtml. */
.auth-page .alert ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.auth-page .text-danger {
    display: block;
    margin-top: .375rem;
    font-size: .8125rem;
    color: var(--danger);
}

/* ---------- small screens ---------- */

@media (max-width: 420px) {
    .auth-shell {
        padding: 1.25rem .875rem 2rem;
    }

    .auth-card-body {
        padding: 1.25rem 1.25rem 1.5rem;
    }

    .auth-brand {
        padding: 1.5rem 1.25rem 0;
    }

    .auth-brand--band {
        padding: 1.25rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .auth-page * {
        transition: none !important;
    }
}