* {
    box-sizing: border-box;
}

:root {
    --bg: #10170f;
    --panel: #243023;
    --field: #171f16;
    --field-border: #637052;
    --text: #f2ead7;
    --muted: #c7b993;
    --line: #4e5b42;
    --moss: #536b3e;
    --fern: #76935b;
    --brass: #c59a4a;
    --shadow: rgba(4, 8, 4, 0.46);
}

body {
    background:
        radial-gradient(circle at top left, rgba(118, 147, 91, 0.22), transparent 30rem),
        linear-gradient(135deg, #0d130d 0%, #1b2719 45%, #2d2118 100%);
    color: var(--text);
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    min-height: 100vh;
}

button,
input {
    font: inherit;
}

.login-page {
    align-items: center;
    display: flex;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    background: rgba(36, 48, 35, 0.96);
    border: 1px solid rgba(197, 154, 74, 0.28);
    border-radius: 8px;
    box-shadow: 0 16px 38px var(--shadow);
    margin: 0 auto;
    max-width: 420px;
    padding: 24px;
    width: 100%;
}

h1 {
    border-bottom: 1px solid var(--line);
    color: var(--brass);
    font-size: 34px;
    line-height: 1.15;
    margin: 0 0 22px;
    padding-bottom: 16px;
    text-align: center;
}

.form-group {
    margin-bottom: 15px;
}

label {
    color: var(--muted);
    display: block;
    font-weight: 700;
    margin-bottom: 5px;
}

input[type="text"],
input[type="password"] {
    background: var(--field);
    border: 1px solid var(--field-border);
    border-radius: 4px;
    color: var(--text);
    font-size: 16px;
    padding: 10px;
    width: 100%;
}

input:focus,
button:focus-visible {
    outline: 2px solid var(--brass);
    outline-offset: 2px;
}

button {
    background: linear-gradient(180deg, var(--fern), var(--moss));
    border: 1px solid rgba(242, 234, 215, 0.12);
    border-radius: 4px;
    color: #fff8e8;
    cursor: pointer;
    font-size: 16px;
    font-weight: 700;
    padding: 10px 14px;
    transition: filter 0.2s, transform 0.2s;
    width: 100%;
}

button:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}

.error-message {
    color: #f09a87;
    min-height: 24px;
}

@media (max-width: 480px) {
    .login-page {
        padding: 12px;
    }

    .login-card {
        padding: 16px;
    }

    h1 {
        font-size: 30px;
    }
}