* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
}

body {
    background: #0f1115;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #eaeaea;
}

/* Обёртка */
.login-wrapper {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

/* Карточка */
.login-card {
    background: #161a21;
    border-radius: 14px;
    padding: 30px 28px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(158, 255, 0, 0.15);
}

/* Заголовок */
.login-card h2 {
    text-align: center;
    font-size: 26px;
    margin-bottom: 6px;
    color: #9eff00;
}

.login-card .sub {
    display: block;
    text-align: center;
    font-size: 14px;
    color: #9aa0a6;
    margin-bottom: 25px;
}

/* Ошибка */
.error {
    background: rgba(255, 80, 80, 0.12);
    color: #ff7070;
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 14px;
    text-align: center;
    border: 1px solid rgba(255, 80, 80, 0.25);
}

/* Форма */
.login-card form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.login-card label {
    font-size: 14px;
    color: #cfcfcf;
    margin-top: 8px;
}

/* Поля */
.input-field {
    background: #0f1115;
    border: 1px solid #2a2f3a;
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 15px;
    color: #fff;
    outline: none;
    transition: border 0.2s, box-shadow 0.2s;
}

.input-field:focus {
    border-color: #9eff00;
    box-shadow: 0 0 0 2px rgba(158, 255, 0, 0.15);
}

/* Кнопка */
.btn {
    margin-top: 20px;
    padding: 14px;
    background: linear-gradient(135deg, #9eff00, #7ad900);
    border: none;
    border-radius: 12px;
    color: #101214;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 25px rgba(158, 255, 0, 0.35);
}

.btn:active {
    transform: translateY(0);
    box-shadow: none;
    opacity: 0.9;
}

/* Адаптив */
@media (max-width: 480px) {
    .login-card {
        padding: 24px 20px;
    }

    .login-card h2 {
        font-size: 24px;
    }
}