:root {
    --bg: #050507;
    --fg: #f0f0fa;
    --muted: rgba(240, 240, 250, 0.68);
    --dim: rgba(240, 240, 250, 0.42);
    --line: rgba(240, 240, 250, 0.22);
    --line-strong: rgba(240, 240, 250, 0.36);
    --surface: rgba(240, 240, 250, 0.08);
    --surface-strong: rgba(240, 240, 250, 0.12);
    --danger: #ff6b6b;
    --success: #76e4a6;
    --font-display: Arial, Verdana, system-ui, sans-serif;
    --font-body: Arial, Verdana, system-ui, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
}

body {
    min-height: 100%;
    margin: 0;
    color: var(--fg);
    font-family: var(--font-body);
    background:
        linear-gradient(rgba(0, 0, 0, 0.68), rgba(0, 0, 0, 0.86)),
        var(--bg);
}

button,
input,
select,
textarea {
    font: inherit;
}

a {
    color: var(--fg);
    text-decoration: none;
    border-bottom: 1px solid var(--line-strong);
}

.shell {
    width: min(1180px, 100%);
    margin: 0 auto;
    padding: 32px;
}

.topbar {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    min-height: 116px;
    padding: 14px 0 34px;
}

.kicker,
label span,
.api-badge,
.primary-button,
.notice strong {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 1.1px;
}

.kicker {
    display: block;
    margin-bottom: 12px;
    color: var(--dim);
    font-size: 11px;
    font-weight: 700;
}

h1,
h2 {
    margin: 0;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.96px;
    line-height: 1;
}

h1 {
    max-width: 740px;
    font-size: clamp(34px, 5.2vw, 68px);
}

h2 {
    font-size: clamp(24px, 3vw, 40px);
}

.api-badge {
    flex: 0 0 auto;
    border: 1px solid var(--line);
    border-radius: 32px;
    padding: 12px 16px;
    color: var(--muted);
    background: var(--surface);
    font-size: 11px;
}

.layout {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
    gap: 28px;
    align-items: start;
}

.panel {
    border: 1px solid var(--line);
    background: var(--surface);
    padding: 24px;
}

.auth-panel {
    display: grid;
    gap: 18px;
    margin-bottom: 28px;
}

.auth-form {
    display: grid;
    grid-template-columns: minmax(160px, 0.75fr) minmax(220px, 1fr) minmax(260px, 1.25fr) minmax(190px, 0.85fr) auto;
    gap: 16px;
    align-items: end;
}

.auth-heading {
    grid-column: 1 / -1;
}

.auth-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-top: 1px solid var(--line);
    padding-top: 16px;
    color: var(--muted);
    font-size: 14px;
}

.vkid-card {
    display: grid;
    grid-template-columns: minmax(240px, 1fr) auto;
    gap: 16px;
    align-items: center;
    border-top: 1px solid var(--line);
    padding-top: 18px;
}

.vkid-card p {
    max-width: 680px;
    margin: 0;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.5;
}

.vkid-mount {
    display: flex;
    justify-content: flex-end;
    min-width: 220px;
}

.vkid-status {
    grid-column: 1 / -1;
    min-height: 20px;
    color: var(--muted);
    font-size: 13px;
}

.vkid-status.is-error {
    color: var(--danger);
}

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

.field-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 180px;
    gap: 16px;
}

label {
    display: grid;
    gap: 8px;
}

label span {
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    min-width: 0;
    border: 1px solid var(--line);
    border-radius: 0;
    background: rgba(0, 0, 0, 0.28);
    color: var(--fg);
    outline: none;
}

input,
select {
    min-height: 48px;
    padding: 0 14px;
}

textarea {
    min-height: 220px;
    resize: vertical;
    padding: 14px;
    line-height: 1.5;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--fg);
    background: rgba(0, 0, 0, 0.38);
}

input::placeholder,
textarea::placeholder {
    color: var(--dim);
}

.file-input {
    padding: 12px;
}

.primary-button {
    min-height: 58px;
    border: 1px solid var(--line-strong);
    border-radius: 32px;
    padding: 0 24px;
    color: var(--fg);
    background: var(--surface-strong);
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
}

.primary-button:hover:not(:disabled) {
    background: rgba(240, 240, 250, 0.18);
}

.primary-button:disabled {
    cursor: not-allowed;
    color: var(--dim);
    border-color: var(--line);
    background: rgba(240, 240, 250, 0.05);
}

.secondary-button {
    min-height: 40px;
    border: 1px solid var(--line);
    border-radius: 32px;
    padding: 0 16px;
    color: var(--fg);
    background: transparent;
    cursor: pointer;
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.1px;
    text-transform: uppercase;
}

.secondary-button:hover {
    background: var(--surface-strong);
}

.facts-panel {
    position: sticky;
    top: 24px;
}

.facts-panel ul {
    display: grid;
    gap: 14px;
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
}

.facts-panel li {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.55;
}

.facts-panel strong,
code {
    color: var(--fg);
}

code {
    font-family: var(--font-mono);
    font-size: 0.92em;
}

.notice {
    display: grid;
    gap: 8px;
    border: 1px solid var(--line);
    padding: 16px;
    line-height: 1.45;
}

.notice strong {
    font-size: 11px;
}

.notice span,
.notice a {
    color: var(--muted);
}

.notice-success {
    border-color: color-mix(in srgb, var(--success), transparent 48%);
}

.notice-success strong {
    color: var(--success);
}

.notice-error {
    border-color: color-mix(in srgb, var(--danger), transparent 38%);
}

.notice-error strong {
    color: var(--danger);
}

@media (max-width: 860px) {
    .shell {
        padding: 20px;
    }

    .topbar,
    .layout {
        display: grid;
    }

    .layout {
        grid-template-columns: 1fr;
    }

    .auth-form {
        grid-template-columns: 1fr 1fr;
    }

    .vkid-card {
        grid-template-columns: 1fr;
    }

    .vkid-mount {
        justify-content: flex-start;
    }

    .facts-panel {
        position: static;
    }
}

@media (max-width: 560px) {
    .shell {
        padding: 16px;
    }

    .topbar {
        min-height: auto;
        padding-top: 8px;
    }

    .field-grid {
        grid-template-columns: 1fr;
    }

    .auth-form,
    .auth-status,
    .vkid-card {
        display: grid;
        grid-template-columns: 1fr;
    }

    .vkid-mount {
        min-width: 0;
    }

    .panel {
        padding: 18px;
    }
}