:root {
    color-scheme: light;
    --bg: #f4f6fb;
    --card: #ffffff;
    --text: #162033;
    --muted: #5a6579;
    --line: #d7deea;
    --brand: #1f5fbf;
    --brand-hover: #184e9e;
    --error: #b42318;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "DM Sans", sans-serif;
    color: var(--text);
    background: radial-gradient(circle at top right, #e8efff 0, transparent 36%), var(--bg);
}

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

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 24px 50px rgba(16, 27, 52, 0.12);
}

.login-header {
    margin-bottom: 22px;
}

.login-kicker {
    margin: 0 0 4px;
    color: var(--brand);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

h1 {
    margin: 0;
    font-family: "Instrument Sans", sans-serif;
    font-size: 30px;
    line-height: 1.15;
}

.login-subtitle {
    margin: 10px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.login-form {
    display: grid;
    gap: 14px;
}

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

label {
    font-size: 14px;
    font-weight: 600;
}

input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(31, 95, 191, 0.16);
}

.login-error {
    margin: 2px 0 0;
    color: var(--error);
    font-size: 13px;
}

.hidden {
    display: none;
}

.login-submit {
    border: 0;
    border-radius: 10px;
    padding: 11px 14px;
    margin-top: 2px;
    font-size: 15px;
    font-weight: 700;
    font-family: inherit;
    color: #fff;
    background: var(--brand);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.08s ease;
}

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

.login-submit:active {
    transform: translateY(1px);
}

.login-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}