/* ============================================================
   Login page — new design (handoff bundle).
   Self-contained: does NOT harmonize with the existing
   design-system tokens on purpose. Only --isb-brand-primary
   is read from global/tokens.css to feed the accent color.
   ============================================================ */


/* ------------------------------------------------------------
   INTER (served locally)
   ------------------------------------------------------------ */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../../fonts/inter/Inter-Regular.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../../fonts/inter/Inter-Medium.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../../fonts/inter/Inter-SemiBold.woff2') format('woff2');
}
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../../fonts/inter/Inter-Bold.woff2') format('woff2');
}
@font-face {
    font-family: 'IBM Plex Serif';
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url('../../fonts/ibm-plex-serif/IBMPlexSerif-Medium.woff2') format('woff2');
}
@font-face {
    font-family: 'IBM Plex Serif';
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url('../../fonts/ibm-plex-serif/IBMPlexSerif-SemiBold.woff2') format('woff2');
}


/* ------------------------------------------------------------
   TOKENS
   Accent is bound to --isb-brand-primary (swapped in from
   global/tokens.css). Everything else is self-contained.
   ------------------------------------------------------------ */
:root,
html[data-theme="light"] {
    --login-font-ui: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --login-font-display: 'IBM Plex Serif', Georgia, 'Times New Roman', serif;
    --login-font-mono: ui-monospace, SFMono-Regular, 'JetBrains Mono', Menlo, monospace;

    --login-accent: var(--isb-brand-primary, #25476E);
    --login-accent-hover: color-mix(in oklch, var(--login-accent) 88%, black);
    --login-accent-ring: color-mix(in oklch, var(--login-accent) 22%, transparent);
    --login-accent-soft: color-mix(in srgb, var(--login-accent) 8%, transparent);

    --login-bg: oklch(0.985 0.003 255);
    --login-surface: oklch(1 0 0);
    --login-surface-2: oklch(0.985 0.003 255);
    --login-border: oklch(0.91 0.006 255);
    --login-border-strong: oklch(0.85 0.008 255);
    --login-text: oklch(0.22 0.01 255);
    --login-text-2: oklch(0.42 0.01 255);
    --login-text-3: oklch(0.58 0.008 255);

    --login-danger: oklch(0.52 0.18 28);
    --login-danger-soft: oklch(0.96 0.03 28);
    --login-danger-border: oklch(0.52 0.18 28 / 0.25);
    --login-danger-ring: oklch(0.52 0.18 28 / 0.12);

    --login-warning: oklch(0.62 0.16 55);
    --login-warning-soft: oklch(0.97 0.04 70);
    --login-warning-border: oklch(0.62 0.16 55 / 0.25);

    --login-info: oklch(0.52 0.12 255);
    --login-info-soft: oklch(0.96 0.02 255);
    --login-info-border: oklch(0.52 0.12 255 / 0.22);

    --login-shadow-lg:
        0 1px 0 oklch(0 0 0 / 0.03),
        0 10px 30px -12px oklch(0 0 0 / 0.12),
        0 4px 8px -4px oklch(0 0 0 / 0.04);
}

html[data-theme="dark"] {
    --login-accent-hover: color-mix(in oklch, var(--login-accent) 80%, white);
    --login-accent-ring: color-mix(in oklch, var(--login-accent) 32%, transparent);
    --login-accent-soft: color-mix(in srgb, var(--login-accent) 18%, transparent);

    --login-bg: oklch(0.16 0.006 255);
    --login-surface: oklch(0.205 0.007 255);
    --login-surface-2: oklch(0.235 0.008 255);
    --login-border: oklch(0.28 0.008 255);
    --login-border-strong: oklch(0.35 0.01 255);
    --login-text: oklch(0.97 0.003 255);
    --login-text-2: oklch(0.75 0.008 255);
    --login-text-3: oklch(0.58 0.008 255);

    --login-danger: oklch(0.72 0.16 28);
    --login-danger-soft: oklch(0.28 0.06 28);
    --login-danger-border: oklch(0.72 0.16 28 / 0.35);
    --login-danger-ring: oklch(0.72 0.16 28 / 0.18);

    --login-warning: oklch(0.78 0.14 65);
    --login-warning-soft: oklch(0.30 0.05 65);
    --login-warning-border: oklch(0.78 0.14 65 / 0.30);

    --login-info: oklch(0.72 0.10 255);
    --login-info-soft: oklch(0.26 0.03 255);
    --login-info-border: oklch(0.72 0.10 255 / 0.28);

    --login-shadow-lg:
        0 1px 0 oklch(1 0 0 / 0.02),
        0 10px 30px -12px oklch(0 0 0 / 0.5),
        0 4px 8px -4px oklch(0 0 0 / 0.3);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --login-accent-hover: color-mix(in oklch, var(--login-accent) 80%, white);
        --login-accent-ring: color-mix(in oklch, var(--login-accent) 32%, transparent);
        --login-accent-soft: color-mix(in srgb, var(--login-accent) 18%, transparent);

        --login-bg: oklch(0.16 0.006 255);
        --login-surface: oklch(0.205 0.007 255);
        --login-surface-2: oklch(0.235 0.008 255);
        --login-border: oklch(0.28 0.008 255);
        --login-border-strong: oklch(0.35 0.01 255);
        --login-text: oklch(0.97 0.003 255);
        --login-text-2: oklch(0.75 0.008 255);
        --login-text-3: oklch(0.58 0.008 255);

        --login-danger: oklch(0.72 0.16 28);
        --login-danger-soft: oklch(0.28 0.06 28);
        --login-danger-border: oklch(0.72 0.16 28 / 0.35);
        --login-danger-ring: oklch(0.72 0.16 28 / 0.18);

        --login-warning: oklch(0.78 0.14 65);
        --login-warning-soft: oklch(0.30 0.05 65);
        --login-warning-border: oklch(0.78 0.14 65 / 0.30);

        --login-info: oklch(0.72 0.10 255);
        --login-info-soft: oklch(0.26 0.03 255);
        --login-info-border: oklch(0.72 0.10 255 / 0.28);

        --login-shadow-lg:
            0 1px 0 oklch(1 0 0 / 0.02),
            0 10px 30px -12px oklch(0 0 0 / 0.5),
            0 4px 8px -4px oklch(0 0 0 / 0.3);
    }
}


/* ------------------------------------------------------------
   RESET / PAGE CHROME
   The login page owns the whole viewport, so we override body
   margins rather than fighting with global admin layout rules.
   ------------------------------------------------------------ */
body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--login-font-ui);
    background: var(--login-bg);
    color: var(--login-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'ss01', 'cv11';
    transition: background-color 180ms ease, color 180ms ease;
    display: grid;
    place-items: center;
    padding: 48px 20px;
}

.login-container * {
    box-sizing: border-box;
}


/* ------------------------------------------------------------
   CENTERED LAYOUT
   ------------------------------------------------------------ */
.login-container {
    width: 100%;
    max-width: 440px;
}

.system-name-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    font-family: var(--login-font-display);
    font-weight: 600;
    font-size: 22px;
    letter-spacing: 0.02em;
    color: var(--login-text);
}

.system-name-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--login-accent);
    color: oklch(0.99 0 0);
    box-shadow:
        inset 0 -1px 0 oklch(0 0 0 / 0.12),
        0 1px 2px oklch(0 0 0 / 0.1);
    flex-shrink: 0;
}

.system-name-icon svg {
    width: 18px;
    height: 18px;
}

.system-name {
    font-family: var(--login-font-display);
    font-size: 22px;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin: 0;
}

.login-card {
    background: var(--login-surface);
    border: 1px solid var(--login-border);
    border-radius: 14px;
    padding: 32px 32px 28px;
    box-shadow: var(--login-shadow-lg);
    animation: login-fade-up 280ms ease;
}

.login-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.login-logo-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px 12px;
    background: oklch(0.985 0.003 255);
    border: 1px solid var(--login-border);
    border-radius: 8px;
    min-height: 48px;
}

.login-logo {
    height: 28px;
    width: auto;
    display: block;
}

.login-welcome {
    text-align: center;
    font-family: var(--login-font-display);
    font-size: 26px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--login-text);
    margin-bottom: 6px;
}

.login-subtitle {
    text-align: center;
    font-size: 13.5px;
    color: var(--login-text-2);
    margin-bottom: 20px;
}


/* ------------------------------------------------------------
   FORM
   ------------------------------------------------------------ */
#login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.005em;
    color: var(--login-text-2);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"] {
    width: 100%;
    padding: 12px 14px;
    font-size: 14.5px;
    font-family: var(--login-font-ui);
    color: var(--login-text);
    background: var(--login-surface);
    border: 1px solid var(--login-border-strong);
    border-radius: 8px;
    outline: none;
    transition:
        border-color 140ms ease,
        box-shadow 140ms ease,
        background-color 140ms ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="password"]:focus,
.form-group input[type="email"]:focus {
    border-color: var(--login-accent);
    box-shadow: 0 0 0 4px var(--login-accent-ring);
}

.form-group input[aria-invalid="true"],
.form-group.has-error input {
    border-color: var(--login-danger);
    box-shadow: 0 0 0 4px var(--login-danger-ring);
}


/* ------------------------------------------------------------
   SUBMIT / AUTH BUTTONS
   Use the new tokenset; the login page does not borrow .isb-btn
   from the global button component on purpose (it's going to be
   restyled later during harmonization).
   ------------------------------------------------------------ */
.login-submit,
a.login-submit,
button.login-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 13px 16px;
    font-family: var(--login-font-ui);
    font-size: 14.5px;
    font-weight: 600;
    letter-spacing: 0.005em;
    color: oklch(0.99 0 0);
    background: var(--login-accent);
    border: 1px solid var(--login-accent);
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition:
        background-color 140ms ease,
        border-color 140ms ease,
        transform 80ms ease,
        box-shadow 140ms ease;
}

.login-submit:hover,
a.login-submit:hover,
button.login-submit:hover {
    background: var(--login-accent-hover);
    border-color: var(--login-accent-hover);
}

.login-submit:focus-visible,
a.login-submit:focus-visible,
button.login-submit:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px var(--login-accent-ring);
}

.login-submit:active,
a.login-submit:active,
button.login-submit:active {
    transform: scale(0.995);
}

.login-submit--secondary,
a.login-submit--secondary,
button.login-submit--secondary {
    background: var(--login-surface-2);
    color: var(--login-text);
    border-color: var(--login-border-strong);
}

.login-submit--secondary:hover,
a.login-submit--secondary:hover,
button.login-submit--secondary:hover {
    background: var(--login-accent-soft);
    border-color: var(--login-border-strong);
}


/* ------------------------------------------------------------
   AUTH OPTIONS / DIVIDER
   ------------------------------------------------------------ */
.auth-options {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    color: var(--login-text-3);
    font-size: 11.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

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

.auth-divider span {
    display: inline-block;
    padding: 0;
    background: transparent;
    color: var(--login-text-3);
}


/* ------------------------------------------------------------
   MESSAGES
   ------------------------------------------------------------ */
.error-message,
.warning-message,
.info-message,
.azure-info-message {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13.5px;
    line-height: 1.45;
    animation: login-fade-in 180ms ease;
}

/* Messages shown above the form (e.g. Django `messages` framework)
   need their own bottom margin since they're not inside the flex
   form that otherwise spaces siblings via `gap`. */
.login-card > .error-message,
.login-card > .warning-message,
.login-card > .info-message,
.login-card > .azure-info-message {
    margin-bottom: 16px;
}

.error-message {
    background: var(--login-danger-soft);
    border: 1px solid var(--login-danger-border);
    color: var(--login-danger);
}

.warning-message {
    background: var(--login-warning-soft);
    border: 1px solid var(--login-warning-border);
    color: var(--login-warning);
}

.info-message,
.azure-info-message {
    background: var(--login-info-soft);
    border: 1px solid var(--login-info-border);
    color: var(--login-info);
}

.azure-info-message a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.errorlist {
    display: flex;
    flex-direction: column;
    gap: 4px;
    list-style: none;
    margin: 2px 0 0;
    padding: 0;
    color: var(--login-danger);
    font-size: 12.5px;
    animation: login-fade-in 180ms ease;
}

.errorlist li {
    display: flex;
    align-items: center;
    gap: 6px;
}

.errorlist li::before,
.error-message::before,
.warning-message::before,
.info-message::before,
.azure-info-message::before {
    content: "";
    display: inline-block;
    width: 16px;
    height: 16px;
    background-color: currentColor;
    flex-shrink: 0;
    -webkit-mask: var(--login-icon-alert) no-repeat center / contain;
            mask: var(--login-icon-alert) no-repeat center / contain;
}

:root,
html[data-theme="light"],
html[data-theme="dark"] {
    --login-icon-alert: url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='12' y1='8' x2='12' y2='12'/%3E%3Cline x1='12' y1='16' x2='12.01' y2='16'/%3E%3C/svg%3E");
}


/* ------------------------------------------------------------
   SSO INFO BOX (shown in SSO-only mode above the SSO button)
   ------------------------------------------------------------ */
.login-sso-info {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 14px;
    border: 1px solid var(--login-border);
    border-radius: 8px;
    background: var(--login-accent-soft);
    color: var(--login-text-2);
    font-size: 13px;
    line-height: 1.5;
    animation: login-fade-in 180ms ease;
}

.login-sso-info svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 1px;
    color: var(--login-accent);
}


/* ------------------------------------------------------------
   SECURITY / TRUST ROW
   ------------------------------------------------------------ */
.login-security {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 12.5px;
    color: var(--login-text-3);
}

.login-security svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}


/* ------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------ */
.login-version {
    margin: 20px 0 0;
    text-align: center;
    font-family: var(--login-font-mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--login-text-3);
    font-variant-numeric: tabular-nums;
}


/* ------------------------------------------------------------
   ANIMATIONS
   ------------------------------------------------------------ */
@keyframes login-fade-up {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: none; }
}

@keyframes login-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}


/* ------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------ */
@media (max-width: 480px) {
    body {
        padding: 24px 16px;
    }

    .login-card {
        padding: 24px 20px 22px;
        border-radius: 12px;
    }

    .login-welcome {
        font-size: 22px;
    }

    .login-logo {
        height: 24px;
    }
}