*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #1e293b;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
}

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
    overflow: hidden;
}

.auth-card__header {
    padding: 2rem 2rem 1.5rem;
    text-align: center;
    background: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
}

.auth-card__logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin-bottom: 1rem;
    border-radius: 14px;
    background: #1e40af;
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 700;
}

.auth-card__title {
    margin: 0 0 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #0f172a;
}

.auth-card__subtitle {
    margin: 0;
    font-size: 0.9375rem;
    color: #64748b;
    line-height: 1.5;
}

.auth-card__body {
    padding: 2rem;
}

.auth-alert {
    margin-bottom: 1.25rem;
    padding: 0.875rem 1rem;
    border-radius: 10px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #b91c1c;
    font-size: 0.875rem;
    line-height: 1.5;
}

.auth-form__group {
    margin-bottom: 1.25rem;
}

.auth-form__label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #334155;
}

.auth-form__input {
    display: block;
    width: 100%;
    padding: 0.8125rem 1rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #0f172a;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.auth-form__input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.auth-form__submit {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    background: #1e40af;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.15s ease, transform 0.1s ease;
}

.auth-form__submit:hover {
    background: #1d4ed8;
}

.auth-form__submit:active {
    transform: scale(0.98);
}

.auth-card__footer {
    padding: 1rem 2rem 1.5rem;
    text-align: center;
    font-size: 0.8125rem;
    color: #94a3b8;
    border-top: 1px solid #f1f5f9;
}

@media (max-width: 480px) {
    .auth-page {
        padding: 1rem;
        align-items: flex-start;
        padding-top: 2rem;
    }

    .auth-card__header,
    .auth-card__body {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .auth-card__title {
        font-size: 1.25rem;
    }
}

@media (min-width: 768px) {
    .auth-card__header {
        padding-top: 2.5rem;
    }
}