:root {
    color-scheme: light;
    --bg: #f5f7fb;
    --panel: #ffffff;
    --text: #18202f;
    --muted: #667085;
    --border: #d9e0ea;
    --primary: #2166e8;
    --primary-dark: #174db3;
    --danger: #b42318;
    --success: #067647;
    --warning: #b54708;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
}

a {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
}

.auth-shell {
    width: min(960px, calc(100% - 32px));
    margin: 0 auto;
    padding: 24px 0 56px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 32px;
}

.brand {
    color: var(--text);
    font-size: 1.05rem;
}

.nav-actions {
    display: flex;
    gap: 16px;
}

.panel {
    width: min(520px, 100%);
    margin: 0 auto;
    padding: 32px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 18px 45px rgba(24, 32, 47, 0.08);
}

.dashboard-panel {
    width: min(680px, 100%);
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1 {
    margin: 0 0 20px;
    font-size: 2rem;
    line-height: 1.15;
}

.lead {
    margin: -8px 0 24px;
    color: var(--muted);
    font-size: 1.1rem;
}

.form-grid {
    display: grid;
    gap: 16px;
}

label {
    display: grid;
    gap: 7px;
    color: var(--text);
    font-weight: 700;
}

input {
    width: 100%;
    padding: 12px 13px;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font: inherit;
}

input:focus {
    border-color: var(--primary);
    outline: 3px solid rgba(33, 102, 232, 0.16);
}

button,
.button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 44px;
    padding: 12px 16px;
    border: 0;
    border-radius: 6px;
    background: var(--primary);
    color: #ffffff;
    cursor: pointer;
    font: inherit;
    font-weight: 800;
}

button:hover,
.button-link:hover {
    background: var(--primary-dark);
    color: #ffffff;
}

.switch-link {
    margin: 18px 0 0;
    color: var(--muted);
    text-align: center;
}

.flash-stack {
    display: grid;
    gap: 10px;
    margin-bottom: 18px;
}

.flash {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #ffffff;
    font-weight: 700;
}

.flash-danger {
    border-color: rgba(180, 35, 24, 0.28);
    color: var(--danger);
}

.flash-success {
    border-color: rgba(6, 118, 71, 0.28);
    color: var(--success);
}

.flash-warning {
    border-color: rgba(181, 71, 8, 0.28);
    color: var(--warning);
}

.account-list {
    display: grid;
    gap: 12px;
    margin: 0 0 24px;
}

.account-list div {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

dt {
    color: var(--muted);
    font-weight: 700;
}

dd {
    margin: 0;
}

@media (max-width: 560px) {
    .topbar,
    .account-list div {
        align-items: flex-start;
        grid-template-columns: 1fr;
    }

    .topbar {
        flex-direction: column;
    }

    .panel {
        padding: 24px;
    }
}