:root {
    color-scheme: light;
    --ink: #151b23;
    --muted: #647084;
    --line: #d9e0ea;
    --paper: #ffffff;
    --page: #f5f7fa;
    --accent: #146c5f;
    --accent-dark: #0f4f47;
    --danger-bg: #fff1f0;
    --danger: #a7352a;
    --success-bg: #eef8f0;
    --success: #24713a;
}

* {
    box-sizing: border-box;
}

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

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-panel {
    width: min(100%, 390px);
    padding: 32px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--paper);
    box-shadow: 0 18px 45px rgba(21, 27, 35, 0.08);
}

.eyebrow {
    margin: 0 0 8px;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

h1 {
    margin: 0 0 24px;
    font-size: 1.85rem;
    line-height: 1.15;
}

.login-form {
    display: grid;
    gap: 10px;
}

label {
    margin-top: 8px;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

input {
    width: 100%;
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 0 12px;
    color: var(--ink);
    font: inherit;
    background: #fff;
}

input:focus {
    outline: 3px solid rgba(20, 108, 95, 0.18);
    border-color: var(--accent);
}

button {
    height: 44px;
    margin-top: 14px;
    border: 0;
    border-radius: 6px;
    color: #fff;
    font: inherit;
    font-weight: 700;
    background: var(--accent);
    cursor: pointer;
}

button:hover,
button:focus {
    background: var(--accent-dark);
}

.notice {
    margin-bottom: 14px;
    padding: 11px 12px;
    border-radius: 6px;
    font-size: 0.92rem;
    line-height: 1.4;
}

.notice p {
    margin: 0;
}

.notice p + p {
    margin-top: 4px;
}

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

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

@media (max-width: 480px) {
    .login-shell {
        align-items: stretch;
        padding: 16px;
    }

    .login-panel {
        align-self: center;
        padding: 24px;
    }
}