/* ------------------------------------------------------------------------
   Celvoa standalone auth surface (sign-in).
   Ported from the QCRM auth design system so both products share one look.
   Self-contained: the login page loads only this file plus theme-init.js, so
   nothing here depends on the authenticated app shell (site.css).
   ------------------------------------------------------------------------ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

:root,
[data-theme="dark"] {
    --auth-surface: #0b1220;
    --auth-panel: #111c2f;
    --auth-panel-strong: #17233a;
    --auth-text: #f8fafc;
    --auth-text-muted: #aab8d0;
    --auth-border: rgba(148, 163, 184, 0.18);
    --auth-accent: #60a5fa;
    --auth-accent-strong: #3b82f6;
    --auth-success: #34d399;
    --auth-danger: #ef4444;
    --auth-field: rgba(15, 23, 42, 0.78);
    --auth-radius: 8px;
    --auth-font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
    --auth-color-scheme: dark;
    --auth-page-glow: rgba(96, 165, 250, 0.08);
    --auth-card-shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
    --auth-mark-inset: rgba(255, 255, 255, 0.28);
    --auth-mark-detail: rgba(255, 255, 255, 0.82);
    --auth-mark-fill: rgba(255, 255, 255, 0.78);
    --auth-mark-shadow: 0 12px 24px rgba(96, 165, 250, 0.24);
    --auth-alert-bg: rgba(239, 68, 68, 0.13);
    --auth-alert-border: rgba(239, 68, 68, 0.42);
    --auth-alert-text: #fecaca;
    --auth-placeholder: rgba(170, 184, 208, 0.78);
    --auth-readonly-field: rgba(15, 23, 42, 0.5);
    --auth-focus-field: rgba(15, 23, 42, 0.92);
    --auth-focus-ring: rgba(96, 165, 250, 0.16);
    --auth-button-border: rgba(96, 165, 250, 0.42);
    --auth-button-shadow: 0 12px 24px rgba(59, 130, 246, 0.2);
    --auth-button-hover-shadow: 0 14px 28px rgba(59, 130, 246, 0.28);
    --auth-link: #93c5fd;
    --auth-danger-text: #fca5a5;
    --auth-button-text: #ffffff;
}

[data-theme="light"] {
    --auth-surface: #f3f6fb;
    --auth-panel: #ffffff;
    --auth-panel-strong: #f8fafc;
    --auth-text: #102033;
    --auth-text-muted: #5d6b82;
    --auth-border: rgba(15, 23, 42, 0.12);
    --auth-accent: #2563eb;
    --auth-accent-strong: #1d4ed8;
    --auth-success: #059669;
    --auth-danger: #dc2626;
    --auth-field: #ffffff;
    --auth-color-scheme: light;
    --auth-page-glow: rgba(37, 99, 235, 0.09);
    --auth-card-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
    --auth-mark-inset: rgba(255, 255, 255, 0.5);
    --auth-mark-detail: rgba(255, 255, 255, 0.88);
    --auth-mark-fill: rgba(255, 255, 255, 0.84);
    --auth-mark-shadow: 0 12px 24px rgba(37, 99, 235, 0.22);
    --auth-alert-bg: #fff1f2;
    --auth-alert-border: rgba(220, 38, 38, 0.32);
    --auth-alert-text: #991b1b;
    --auth-placeholder: rgba(93, 107, 130, 0.72);
    --auth-readonly-field: #f1f5f9;
    --auth-focus-field: #ffffff;
    --auth-focus-ring: rgba(37, 99, 235, 0.15);
    --auth-button-border: rgba(37, 99, 235, 0.42);
    --auth-button-shadow: 0 12px 24px rgba(37, 99, 235, 0.18);
    --auth-button-hover-shadow: 0 14px 28px rgba(37, 99, 235, 0.24);
    --auth-link: #1d4ed8;
    --auth-danger-text: #b91c1c;
    --auth-button-text: #ffffff;
}

html {
    min-height: 100%;
}

body.auth-page {
    margin: 0;
    min-height: 100vh;
    background:
        linear-gradient(180deg, var(--auth-page-glow), transparent 34%),
        var(--auth-surface);
    color: var(--auth-text);
    font-family: var(--auth-font);
    display: grid;
    place-items: center;
    padding: 32px 16px;
    color-scheme: var(--auth-color-scheme);
}

.auth-shell {
    width: min(100%, 420px);
}

.auth-card {
    width: 100%;
    background: color-mix(in srgb, var(--auth-panel) 94%, transparent);
    border: 1px solid var(--auth-border);
    border-radius: var(--auth-radius);
    box-shadow: var(--auth-card-shadow);
    padding: clamp(24px, 5vw, 36px);
    display: grid;
    gap: 1rem;
}

.auth-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 0.5rem;
    color: var(--auth-text);
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1;
}

.auth-brand-mark {
    position: relative;
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    border-radius: var(--auth-radius);
    background: linear-gradient(135deg, var(--auth-accent), color-mix(in srgb, var(--auth-success) 70%, var(--auth-accent)));
    box-shadow: inset 0 0 0 1px var(--auth-mark-inset), var(--auth-mark-shadow);
}

.auth-brand-mark::before,
.auth-brand-mark::after {
    content: "";
    position: absolute;
    border-radius: 3px;
    border: 1px solid var(--auth-mark-detail);
}

.auth-brand-mark::before {
    inset: 9px 11px 11px 9px;
}

.auth-brand-mark::after {
    width: 8px;
    height: 8px;
    right: 8px;
    bottom: 8px;
    background: var(--auth-mark-fill);
}

.auth-brand-text {
    display: grid;
    gap: 0.15rem;
    line-height: 1.1;
}

.auth-brand-text strong {
    font-size: 1.1rem;
    font-weight: 800;
}

.auth-brand-text small {
    color: var(--auth-text-muted);
    font-size: 0.8rem;
    font-weight: 600;
}

.alert {
    background: var(--auth-alert-bg);
    border: 1px solid var(--auth-alert-border);
    color: var(--auth-alert-text);
    padding: 0.875rem 1rem;
    border-radius: var(--auth-radius);
    font-size: 0.9rem;
    line-height: 1.5;
}

.notice {
    background: color-mix(in srgb, var(--auth-success) 14%, var(--auth-panel));
    border: 1px solid color-mix(in srgb, var(--auth-success) 42%, transparent);
    border-radius: var(--auth-radius);
    color: color-mix(in srgb, var(--auth-success) 74%, var(--auth-text));
    font-size: 0.9rem;
    line-height: 1.5;
    padding: 0.875rem 1rem;
}

.toast-stack {
    display: grid;
    gap: 0.75rem;
    inline-size: min(24rem, calc(100vw - 2rem));
    inset-block-start: 1rem;
    inset-inline-end: 1rem;
    pointer-events: none;
    position: fixed;
    z-index: 120;
}

.toast-stack .notice,
.notice.toast-message {
    align-items: flex-start;
    box-shadow: var(--auth-card-shadow);
    display: flex;
    gap: 0.75rem;
    justify-content: space-between;
    margin: 0;
    pointer-events: auto;
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.toast-message.is-hiding {
    opacity: 0;
    transform: translateY(-0.4rem);
}

.toast-dismiss {
    background: transparent;
    border: 0;
    color: currentColor;
    cursor: pointer;
    min-height: 0;
    opacity: 0.7;
    padding: 0 0 0 0.5rem;
}

.toast-dismiss:hover,
.toast-dismiss:focus-visible {
    opacity: 1;
}

/* Server-side ModelOnly summaries render an empty container until something fails. */
.validation-summary:empty,
.validation-summary ul:empty {
    display: none;
}

.validation-summary ul {
    margin: 0;
    padding-inline-start: 1.1rem;
}

.form {
    display: grid;
    gap: 1rem;
}

.form-group {
    display: grid;
    gap: 0.45rem;
}

.form-group > label {
    display: block;
    color: var(--auth-text);
    font-weight: 650;
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    min-height: 44px;
    padding: 0.8rem 0.9rem;
    border: 1px solid var(--auth-border);
    border-radius: var(--auth-radius);
    font: inherit;
    background: var(--auth-field);
    color: var(--auth-text);
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

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

.form-control:hover {
    border-color: color-mix(in srgb, var(--auth-accent) 42%, var(--auth-border));
}

.form-control:focus {
    border-color: var(--auth-accent);
    box-shadow: 0 0 0 4px var(--auth-focus-ring);
    background: var(--auth-focus-field);
}

/* Password reveal keeps the login form compact while preserving keyboard and screen-reader access. */
.password-input-wrap {
    position: relative;
}

.password-input-wrap .form-control {
    padding-inline-end: 3.15rem;
}

.password-toggle {
    position: absolute;
    inset-block-start: 50%;
    inset-inline-end: 0.45rem;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 6px;
    background: transparent;
    color: var(--auth-text-muted);
    display: grid;
    place-items: center;
    cursor: pointer;
    transform: translateY(-50%);
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.password-toggle:hover,
.password-toggle:focus-visible {
    color: var(--auth-text);
    background: color-mix(in srgb, var(--auth-accent) 12%, transparent);
    border-color: color-mix(in srgb, var(--auth-accent) 28%, transparent);
}

.password-toggle:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px var(--auth-focus-ring);
}

.password-toggle-icon {
    width: 1.15rem;
    height: 1.15rem;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.8;
}

.auth-inline-link {
    text-align: end;
    margin-top: 0.25rem;
}

.auth-inline-link a {
    color: var(--auth-link);
    font-size: 0.9rem;
    font-weight: 700;
    text-decoration: none;
}

.auth-inline-link a:hover,
.auth-inline-link a:focus-visible {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.btn {
    width: 100%;
    min-height: 44px;
    padding: 0.85rem 1rem;
    border: 1px solid var(--auth-button-border);
    border-radius: var(--auth-radius);
    font: inherit;
    font-weight: 750;
    cursor: pointer;
    background: linear-gradient(180deg, var(--auth-accent), var(--auth-accent-strong));
    color: var(--auth-button-text);
    transition: filter 0.15s ease, box-shadow 0.15s ease;
    box-shadow: var(--auth-button-shadow);
}

.btn:hover,
.btn:focus-visible {
    filter: brightness(1.06);
    box-shadow: var(--auth-button-hover-shadow);
}

.btn:disabled,
.btn[aria-busy="true"] {
    cursor: wait;
    opacity: 0.72;
}

.secondary-link {
    color: var(--auth-link);
    background: transparent;
    border: 0;
    padding: 0;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 650;
    font-family: inherit;
    cursor: pointer;
}

.secondary-link:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.field-validation-error,
.text-danger {
    display: block;
    margin-top: 0.1rem;
    color: var(--auth-danger-text);
    font-size: 0.84rem;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (max-width: 480px) {
    body.auth-page {
        padding: 16px;
        place-items: start center;
    }

    .auth-card {
        padding: 22px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}

/* ------------------------------------------------------------------------
   Auth top bar — language switcher (reachable before sign-in)
   ------------------------------------------------------------------------ */
/* Pinned to the top corner of the viewport: top-right for LTR, top-left for RTL
   (inset-inline-end mirrors automatically), clear of the centered sign-in card. */
.auth-topbar {
    position: absolute;
    inset-block-start: max(12px, env(safe-area-inset-top));
    inset-inline-end: max(16px, env(safe-area-inset-right));
    inset-inline-start: auto;
    z-index: 20;
    display: flex;
    justify-content: flex-end;
}

.auth-language {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0 10px 0 12px;
    min-height: 44px;
    border: 1px solid var(--auth-border);
    border-radius: var(--auth-radius);
    background: var(--auth-field);
    color: var(--auth-text);
}

.auth-language-label {
    display: inline-flex;
    align-items: center;
    color: var(--auth-text-muted);
    pointer-events: none;
}

.auth-language-icon {
    width: 18px;
    height: 18px;
}

.auth-language-select {
    appearance: none;
    -webkit-appearance: none;
    border: 0;
    background: transparent;
    color: var(--auth-text);
    font-family: var(--auth-font);
    font-size: 16px; /* prevents iOS focus-zoom */
    font-weight: 600;
    min-height: 44px;
    padding: 0 18px 0 4px;
    cursor: pointer;
}

.auth-language-select:focus-visible {
    outline: 2px solid var(--auth-accent);
    outline-offset: 2px;
    border-radius: 4px;
}

.auth-language-select option {
    /* Native option lists ignore most styling, but set colors so dark-theme dropdowns are readable. */
    color: #0f172a;
    background: #ffffff;
}