/* ---------------------------------------------------
The sign-in page follows the SEDNode website: the same blue bars, Merriweather headings and Source Sans Pro text.
Like the website it is light only.
--------------------------------------------------- */

:root {
    color-scheme: light;
    --brand: #195EA3;
    --brand-deep: #124A83;
    --ink: #1B2733;
    --line: #D2DDE8;
    --field-line: #AFC0D2;
    --ground: #F3F6FA;
    --panel: #FFFFFF;
    --info-bg: #E1EEFA;
    --info-line: #A1D0FF;
    --info-ink: #124A83;
    --error-bg: #FCEBE9;
    --error-line: #F0B8B0;
    --error-ink: #A0251A;
    --warn-bg: #FFF3D6;
    --warn-line: #E8C878;
    --warn-ink: #6E4A00;
    --serif: 'Merriweather', Georgia, 'Times New Roman', serif;
    --sans: 'Source Sans Pro', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--ground);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 1.125rem;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.wrap {
    width: 100%;
    max-width: 1080px;
    margin-inline: auto;
    padding-inline: 24px;
}

/* ---------------------------------------------------
Header band
--------------------------------------------------- */

.band {
    position: relative;
    background-color: var(--brand);
    overflow: hidden;
}

/* A faint field of nodes, echoing the dotted mark in the SEDNode logo, fading in from the right */
.band::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(255, 255, 255, 0.16) 1.4px, transparent 1.6px);
    background-size: 20px 20px;
    -webkit-mask-image: linear-gradient(100deg, transparent 35%, #000 95%);
    mask-image: linear-gradient(100deg, transparent 35%, #000 95%);
    pointer-events: none;
}

.band .wrap {
    position: relative;
    z-index: 1;
    padding-block: 18px 96px;
}

.logo {
    display: block;
    height: 48px;
    width: auto;
}

/* ---------------------------------------------------
Main
--------------------------------------------------- */

main {
    flex: 1;
}

main .wrap {
    display: grid;
    grid-template-columns: minmax(0, 420px);
    padding-block: 0 72px;
}

/* ---------------------------------------------------
Sign-in panel, overlapping the bottom of the band
--------------------------------------------------- */

.panel {
    margin-top: -64px;
    position: relative;
    z-index: 2;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 6px;
    box-shadow: 0 1px 2px rgba(18, 74, 131, 0.06), 0 18px 40px -18px rgba(18, 74, 131, 0.28);
    padding: 32px 32px 28px;
}

.panel h1 {
    margin: 0;
    font-family: var(--serif);
    font-weight: 700;
    font-size: 1.625rem;
    line-height: 1.25;
}

.panel form {
    display: grid;
    gap: 18px;
    margin-top: 22px;
}

.notice {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    padding: 11px 14px;
    border: 1px solid;
    border-radius: 4px;
    font-size: 1rem;
    line-height: 1.45;
}

.notice svg {
    flex: none;
    width: 20px;
    height: 20px;
    margin-top: 1px;
}

.notice.info {
    background: var(--info-bg);
    border-color: var(--info-line);
    color: var(--info-ink);
}

.notice.error {
    background: var(--error-bg);
    border-color: var(--error-line);
    color: var(--error-ink);
}

.notice.warn {
    background: var(--warn-bg);
    border-color: var(--warn-line);
    color: var(--warn-ink);
}

.field {
    display: grid;
    gap: 6px;
}

.field label {
    font-weight: 600;
    font-size: 1rem;
}

.control {
    position: relative;
}

.field input {
    width: 100%;
    height: 50px;
    padding: 0 14px;
    font: inherit;
    font-size: 1.0625rem;
    color: var(--ink);
    background: var(--panel);
    border: 1px solid var(--field-line);
    border-radius: 4px;
    transition: border-color 120ms ease, box-shadow 120ms ease;
}

.field input:hover {
    border-color: #8EA5BC;
}

.field input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(25, 94, 163, 0.22);
}

.field input[aria-invalid="true"] {
    border-color: var(--error-ink);
}

.field input[aria-invalid="true"]:focus {
    box-shadow: 0 0 0 3px rgba(160, 37, 26, 0.18);
}

#password {
    padding-right: 76px;
}

.reveal {
    position: absolute;
    top: 50%;
    right: 6px;
    transform: translateY(-50%);
    font: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--brand);
    background: transparent;
    border: 0;
    border-radius: 4px;
    padding: 6px 10px;
    cursor: pointer;
}

.reveal:hover {
    background: var(--info-bg);
}

.reveal:focus-visible,
.submit:focus-visible {
    outline: 3px solid rgba(25, 94, 163, 0.45);
    outline-offset: 2px;
}

.submit {
    margin-top: 4px;
    height: 52px;
    font: inherit;
    font-weight: 600;
    font-size: 1.125rem;
    color: #FFFFFF;
    background: var(--brand);
    border: 0;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 120ms ease;
}

.submit:hover {
    background: var(--brand-deep);
}

.submit:disabled {
    background: #6E97C2;
    cursor: progress;
}

/* ---------------------------------------------------
Footer
--------------------------------------------------- */

.footer {
    background-color: var(--brand);
    color: #FFFFFF;
    font-size: 1rem;
}

.footer .wrap {
    padding-block: 15px;
}

/* ---------------------------------------------------
Narrow screens
--------------------------------------------------- */

@media (max-width: 860px) {
    .band .wrap {
        padding-block: 16px 72px;
    }

    main .wrap {
        padding-block: 0 48px;
    }

    .panel {
        margin-top: -52px;
    }
}

@media (max-width: 480px) {
    .wrap {
        padding-inline: 16px;
    }

    .logo {
        height: 40px;
    }

    .panel {
        padding: 24px 20px 22px;
    }
}

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