:root {
    color-scheme: light;
    --bg: #f3f6f8;
    --surface: #ffffff;
    --surface-subtle: #f8fafb;
    --text: #17202a;
    --muted: #61707f;
    --border: #d8e0e7;
    --brand: #075985;
    --brand-strong: #06476a;
    --accent: #0e7490;
    --success: #166534;
    --success-bg: #f0fdf4;
    --danger: #b42318;
    --danger-bg: #fff4f2;
    --focus: #f59e0b;
    --shadow: 0 12px 35px rgb(15 23 42 / 8%);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
        "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.55;
}

* {
    box-sizing: border-box;
}

html {
    min-width: 20rem;
    background: var(--bg);
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at 100% 0, rgb(14 116 144 / 9%), transparent 28rem),
        var(--bg);
}

a {
    color: var(--brand);
    font-weight: 650;
    text-underline-offset: 0.18em;
}

a:hover {
    color: var(--brand-strong);
}

code {
    display: inline-block;
    max-width: 100%;
    overflow-wrap: anywhere;
    padding: 0.25rem 0.45rem;
    border-radius: 0.35rem;
    background: var(--surface-subtle);
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

:where(a, button, input, select, textarea):focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

.skip-link {
    position: fixed;
    z-index: 100;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.65rem 0.9rem;
    border-radius: 0.5rem;
    color: #fff;
    background: var(--text);
    transform: translateY(-200%);
}

.skip-link:focus {
    transform: translateY(0);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

.app-header {
    display: grid;
    grid-template-columns: minmax(11rem, auto) minmax(0, 1fr) auto;
    gap: 1.25rem;
    align-items: center;
    padding: 0.9rem clamp(1rem, 4vw, 3rem);
    border-bottom: 1px solid rgb(255 255 255 / 18%);
    color: #fff;
    background: #0c344a;
    box-shadow: 0 4px 16px rgb(15 23 42 / 12%);
}

.brand {
    color: #fff;
    font-size: 1.08rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    text-decoration: none;
}

.brand:hover {
    color: #dff7ff;
}

.app-header nav {
    display: flex;
    gap: 0.3rem;
    align-items: center;
    overflow-x: auto;
    scrollbar-width: thin;
}

.app-header nav a {
    flex: 0 0 auto;
    padding: 0.48rem 0.68rem;
    border-radius: 0.45rem;
    color: #dcecf4;
    font-size: 0.9rem;
    text-decoration: none;
}

.app-header nav a:hover,
.app-header nav a[aria-current="page"] {
    color: #fff;
    background: rgb(255 255 255 / 13%);
}

.session {
    display: flex;
    gap: 0.7rem;
    align-items: center;
}

.session-user {
    max-width: 11rem;
    overflow: hidden;
    color: #dcecf4;
    font-size: 0.85rem;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.session form {
    margin: 0;
}

main {
    width: min(76rem, calc(100% - 2rem));
    margin: clamp(1.5rem, 4vw, 3rem) auto;
}

.focused-form-page {
    width: min(48rem, calc(100% - 2rem));
}

.focused-form-page > form {
    margin-right: auto;
    margin-left: auto;
}

main > h1 {
    margin: 0;
    font-size: clamp(1.75rem, 4vw, 2.45rem);
    line-height: 1.15;
    letter-spacing: -0.035em;
}

main > h1 + p:not([role]) {
    max-width: 45rem;
    margin-top: 0.65rem;
    color: var(--muted);
    font-size: 1.05rem;
}

section {
    margin-top: 1.25rem;
    padding: clamp(1rem, 2.5vw, 1.5rem);
    border: 1px solid var(--border);
    border-radius: 0.85rem;
    background: var(--surface);
    box-shadow: var(--shadow);
}

section h2 {
    margin: 0 0 1rem;
    font-size: 1.15rem;
    letter-spacing: -0.015em;
}

.purelymail-section-nav {
    position: sticky;
    z-index: 20;
    top: 0.5rem;
    margin: 1.25rem 0;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 0.8rem;
    background: var(--surface);
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    box-shadow: var(--shadow);
    backdrop-filter: blur(0.75rem);
}

.purelymail-section-nav [role="tablist"] {
    display: flex;
    gap: 0.4rem;
    overflow-x: auto;
    scrollbar-width: thin;
}

.purelymail-section-nav a {
    flex: 0 0 auto;
    padding: 0.55rem 0.75rem;
    border-radius: 0.5rem;
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 750;
    text-decoration: none;
}

.purelymail-section-nav a:hover {
    color: var(--brand-strong);
    background: var(--surface-subtle);
}

.purelymail-section-nav a[aria-selected="true"] {
    color: #fff;
    background: var(--brand);
}

[data-purelymail-panel][hidden] {
    display: none;
}

form {
    display: grid;
    gap: 1rem;
    max-width: 42rem;
}

label {
    display: grid;
    gap: 0.4rem;
    color: #334155;
    font-weight: 700;
}

label:has(> input[type="checkbox"]) {
    display: flex;
    gap: 0.65rem;
    align-items: center;
}

input,
select,
textarea {
    width: 100%;
    min-height: 2.75rem;
    padding: 0.62rem 0.75rem;
    border: 1px solid #aebbc6;
    border-radius: 0.5rem;
    color: var(--text);
    background: #fff;
    font: inherit;
}

input:hover,
select:hover,
textarea:hover {
    border-color: #718291;
}

input[type="checkbox"] {
    width: 1.15rem;
    min-height: 1.15rem;
    margin: 0;
    accent-color: var(--brand);
}

button,
.button {
    width: fit-content;
    min-height: 2.65rem;
    padding: 0.58rem 0.95rem;
    border: 1px solid transparent;
    border-radius: 0.5rem;
    color: #fff;
    background: var(--brand);
    font: inherit;
    font-weight: 750;
    line-height: 1.2;
    cursor: pointer;
}

button:hover,
.button:hover {
    color: #fff;
    background: var(--brand-strong);
}

.app-header button {
    min-height: 2.25rem;
    padding: 0.4rem 0.7rem;
    border-color: rgb(255 255 255 / 35%);
    background: transparent;
    font-size: 0.85rem;
}

main > form {
    margin-top: 1.25rem;
    padding: clamp(1rem, 2.5vw, 1.5rem);
    border: 1px solid var(--border);
    border-radius: 0.85rem;
    background: var(--surface);
    box-shadow: var(--shadow);
}

main > form + form,
section > form + form {
    margin-top: 0.75rem;
    padding: 0;
    border: 0;
    box-shadow: none;
}

main > form + form button,
section > form + form button {
    border-color: #f4b4ae;
    color: var(--danger);
    background: #fff;
}

[role="status"],
[role="alert"] {
    margin: 1rem 0;
    padding: 0.85rem 1rem;
    border: 1px solid;
    border-radius: 0.6rem;
}

[role="status"] {
    border-color: #86d49d;
    color: var(--success);
    background: var(--success-bg);
}

[role="alert"] {
    border-color: #f4b4ae;
    color: var(--danger);
    background: var(--danger-bg);
}

.symbolic-address-warning {
    margin: -0.2rem 0 0;
    padding: 0.75rem 0.85rem;
    border: 1px solid #f4b4ae;
    border-radius: 0.6rem;
    color: var(--danger);
    background: var(--danger-bg);
}

.reconciliation-summary {
    margin: 1rem 0 1.5rem;
}

[data-purelymail-panel] h3 {
    margin: 1.4rem 0 0.45rem;
}

.dns-zone-warning {
    padding: 0.8rem 0.9rem;
    border-left: 0.3rem solid #d97706;
    border-radius: 0.35rem;
    color: #713f12;
    background: #fffbeb;
}

.dns-zone-preview + .dns-zone-preview {
    margin-top: 1.75rem;
    padding-top: 0.35rem;
    border-top: 1px solid var(--border);
}

.dns-zone-preview .button {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

dl {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
    gap: 0.75rem;
    margin: 0;
}

dl > div {
    padding: 0.8rem;
    border-radius: 0.6rem;
    background: var(--surface-subtle);
}

dt {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 750;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

dd {
    margin: 0.1rem 0 0;
    font-size: 1.55rem;
    font-weight: 800;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

th,
td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

thead th {
    color: var(--muted);
    background: var(--surface-subtle);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.035em;
}

tbody tr:hover {
    background: #f8fbfc;
}

.alias-actions form {
    gap: 0;
}

.alias-actions form + form {
    margin-top: 0.5rem;
}

.alias-actions form + form button {
    border-color: #f4b4ae;
    color: var(--danger);
    background: #fff;
}

.purelymail-user-actions {
    min-width: 7rem;
}

.purelymail-user-action-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: flex-start;
}

.purelymail-user-action-group > form {
    gap: 0;
}

.destructive-action {
    width: fit-content;
    max-width: 100%;
    margin: 0;
    padding: 0.4rem 0.55rem;
    border: 1px solid #f4b4ae;
    border-radius: 0.65rem;
    background: var(--danger-bg);
}

.destructive-action[open] {
    flex-basis: 100%;
    width: min(22rem, 100%);
    padding: 0.65rem;
}

.destructive-action summary {
    color: var(--danger);
    font-weight: 750;
    cursor: pointer;
}

.destructive-action form {
    margin-top: 0.75rem;
}

.destructive-action [role="alert"] {
    margin: 0;
}

button.button-danger {
    border-color: #f4b4ae;
    color: #fff;
    background: var(--danger);
}

button.button-danger:hover {
    color: #fff;
    background: #8f1d14;
}

.login-page {
    display: grid;
    place-items: center;
    padding: 1rem;
}

.login-page main {
    width: min(29rem, 100%);
    margin: 0;
    padding: clamp(1.4rem, 5vw, 2.25rem);
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: var(--surface);
    box-shadow: 0 18px 55px rgb(15 23 42 / 14%);
}

.login-page main::before {
    display: block;
    width: 2.75rem;
    height: 0.32rem;
    margin-bottom: 1.3rem;
    border-radius: 999px;
    background: var(--accent);
    content: "";
}

.login-page form {
    margin-top: 1.4rem;
}

.login-page button {
    width: 100%;
    margin-top: 0.25rem;
}

@media (max-width: 56rem) {
    .app-header {
        grid-template-columns: 1fr auto;
    }

    .app-header nav {
        grid-column: 1 / -1;
        grid-row: 2;
        order: 3;
        margin-inline: -0.35rem;
    }

    .session-user {
        display: none;
    }

    section {
        overflow-x: auto;
    }
}

@media (max-width: 38rem) {
    .app-header {
        gap: 0.65rem;
        padding-inline: 0.8rem;
    }

    .app-header nav a {
        padding: 0.42rem 0.55rem;
        font-size: 0.83rem;
    }

    main {
        width: min(100% - 1rem, 76rem);
    }

    section,
    main > form {
        border-radius: 0.65rem;
    }

    th,
    td {
        min-width: 7rem;
        padding: 0.65rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition: none !important;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
        --bg: #0f1720;
        --surface: #17212b;
        --surface-subtle: #202c37;
        --text: #edf4f7;
        --muted: #a9b8c5;
        --border: #344451;
        --brand: #67d2f0;
        --brand-strong: #a5e8fa;
        --success: #8fe1a6;
        --success-bg: #12321f;
        --danger: #ff9d94;
        --danger-bg: #3b1b1b;
        --shadow: 0 12px 35px rgb(0 0 0 / 22%);
    }

    body {
        background:
            radial-gradient(circle at 100% 0, rgb(14 116 144 / 14%), transparent 28rem),
            var(--bg);
    }

    label {
        color: #d4dee5;
    }

    input,
    select,
    textarea {
        border-color: #536472;
        color: var(--text);
        background: #111a22;
    }

    tbody tr:hover {
        background: #1d2a35;
    }

    main > form + form button,
    section > form + form button {
        border-color: #844b47;
        color: var(--danger);
        background: transparent;
    }

    button.button-danger {
        border-color: #a85b54;
        color: #1a0c0b;
        background: var(--danger);
    }

    button.button-danger:hover {
        color: #fff;
        background: #b42318;
    }
}