/* Модальные окна аутентификации */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
    padding: 16px;
    box-sizing: border-box;
}

.modal-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px;
    width: 100%;
    max-width: 420px;
    position: relative;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    max-height: 90vh;
    overflow-y: auto;
    box-sizing: border-box;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 18px;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
}

.auth-tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 20px;
}

.auth-tab-btn {
    flex: 1;
    padding: 12px;
    background: none;
    border: none;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}

.auth-tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.form-group {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.92rem;
    font-weight: 600;
}

.form-input, .form-select {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    outline: none;
    font-size: 16px; /* Защита от зума Safari */
    box-sizing: border-box;
}

.form-input:focus, .form-select:focus {
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

@media (max-width: 576px) {
    .modal-card {
        padding: 20px 16px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
}