:root {
    color-scheme: dark;

    --background: #080d16;
    --card: #0f1724;
    --card-border: #202b3c;

    --text: #f5f7fb;
    --text-muted: #8995a8;

    --input: #0a111c;
    --input-border: #283448;

    --accent: #8b5cf6;
    --accent-hover: #9d74f7;

    --error-bg: rgba(220, 38, 38, 0.12);
    --error-border: rgba(248, 113, 113, 0.35);
    --error-text: #fca5a5;
}


* {
    box-sizing: border-box;
}


html,
body {
    margin: 0;
    min-height: 100%;
}


body {
    min-height: 100vh;

    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background:
        radial-gradient(
            circle at 50% 0%,
            #142033 0%,
            var(--background) 45%
        );

    color: var(--text);
}


button,
input {
    font: inherit;
}


.login-page {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 24px;
}


.login-card {
    width: 100%;
    max-width: 420px;

    padding: 34px;

    background: rgba(15, 23, 36, 0.94);

    border: 1px solid var(--card-border);
    border-radius: 20px;

    box-shadow:
        0 30px 80px rgba(0, 0, 0, 0.35);
}


.login-brand {
    display: flex;
    align-items: center;
    gap: 14px;

    margin-bottom: 30px;
}


.login-brand__mark {
    width: 46px;
    height: 46px;

    display: grid;
    place-items: center;

    flex: 0 0 auto;

    border-radius: 14px;

    background: var(--accent);

    color: white;
    font-weight: 800;
    letter-spacing: -0.03em;
}


.login-brand h1 {
    margin: 0;

    font-size: 22px;
    line-height: 1.2;
}


.login-brand p {
    margin: 4px 0 0;

    color: var(--text-muted);

    font-size: 14px;
}


.login-error {
    margin-bottom: 20px;
    padding: 12px 14px;

    border: 1px solid var(--error-border);
    border-radius: 10px;

    background: var(--error-bg);

    color: var(--error-text);

    font-size: 14px;
    line-height: 1.45;
}


.login-form {
    display: flex;
    flex-direction: column;
}


.login-form label {
    margin-bottom: 7px;

    color: #d7ddea;

    font-size: 13px;
    font-weight: 600;
}


.login-form input {
    width: 100%;
    height: 48px;

    margin-bottom: 18px;
    padding: 0 14px;

    border: 1px solid var(--input-border);
    border-radius: 10px;

    outline: none;

    background: var(--input);
    color: var(--text);

    transition:
        border-color 0.15s ease,
        box-shadow 0.15s ease;
}


.login-form input:focus {
    border-color: var(--accent);

    box-shadow:
        0 0 0 3px rgba(139, 92, 246, 0.13);
}


.login-form button {
    height: 48px;

    margin-top: 4px;

    border: 0;
    border-radius: 10px;

    cursor: pointer;

    background: var(--accent);
    color: white;

    font-weight: 700;

    transition:
        background 0.15s ease,
        transform 0.15s ease;
}


.login-form button:hover {
    background: var(--accent-hover);
}


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


.login-form button:disabled {
    cursor: wait;
    opacity: 0.7;
}


@media (max-width: 520px) {
    .login-page {
        padding: 16px;
    }

    .login-card {
        padding: 26px 22px;
        border-radius: 16px;
    }
}